GOST R 54480-2011
FEDERAL AGENCY | ||
NATIONAL |
GOST R | |
COLD ROLLED
ELECTRICAL ISOTROPIC
STEEL
Specifications
DIN EN 10106:2007 «Kaltgewalztes nicht kornorientiertes Elektroblech und — band im
schlussgeglühten classic"
(NEQ)
DIN EN 10341:2006 «Kaltgewalztes Elektroblech und — band aus und unlegierten
legierten Stählen im nicht schlussgeglühten classic"
(NEQ)
60404−8-3 IEC:2005 «Matériaux magnétiques — Partie 8−3: Spécifications pour
matériaux particuliers — bandes et Tôles magnétiques en acier non allié et en acier
allié, laminées à froid, livrées à l'état semi-fini"
(NEQ)
60404−8-4 IEC:1998 «Matériaux magnétiques — Partie 8−4: Spécifications pour
matériaux particuliers — magnétigues Tôles en acier à grains non orientes,
laminées à froid et livrées à l'état fini"
(NEQ)
Moscow |
Preface
The objectives and principles of standardization in the Russian Federation established by the Federal law of 27 December 2002 № 184-FZ «On technical regulation», and rules for the application of national standards of the Russian Federation — GOST R 1.0−2004 «Standardization in the Russian Federation. The main provisions»
Data on standard
1. DEVELOPED by the Technical Committee for standardization TC 375 «steel Products from ferrous metals and alloys», Open joint stock company «Novolipetsk steel» (OJSC «NLMK»), a limited liability company «Charlestongirl Certification» (JSC «Charlestongirl Certification»)
2. SUBMITTED by the Technical Committee for standardization TC 375 «steel Products from ferrous metals and alloys»
3. APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated 21 October 2011 no 480-St
4. THIS STANDARD takes into account the basic regulatory provisions of the following international and European regional standards:
— DIN EN 10106:2007 «Sheets and strips cold-rolled electrical steel with undirected grain, supplied in the fully processed state» (DIN EN 10106:2007 «Kaltgewalztes nicht kornorientiertes Elektroblech und — band im schlussgeglühten classic», NEQ);
DIN EH 10341:2006 «Sheets and strips cold-rolled electrical alloyed and non-alloyed steel delivered in the semi-processed state» (DIN EN 10341:2006 «Kaltgewalztes Elektroblech und — band aus unlegierten legierten Stählen und im nicht schlussgeglühten classic», NEQ);
Mack 60404−8-3:2005 «magnetic Materials. Part 8−3: specifications for individual materials. Cold-rolled sheets and strip of electrical non-alloy and alloy steel supplied in the form of semi-finished products» (IEC 60404−8-3:2005 «Matériaux magnétiques — Partie 8−3: Spécifications pour matériaux particuliers — bandes et Tôles magnétiques en acier non allié et en acier allié, laminées à froid, livrées à l'état semi-fini», NEQ);
Mack 60404−8-4:1998 «Materials magnetic. Part 8−4: specifications for individual materials. Cold-rolled sheets and strips of electrical steel with undirected grain, supplied in the fully processed state» (IEC 60404−8-4:1998 «Matériaux magnétiques — Partie 8−4: Spécifications pour matériaux particuliers — Tôles magnétiques en acier à grains non orientes, laminées à froid et livrées à l'état fini», NEQ)
5. INTRODUCED FOR THE FIRST TIME
Information about the changes to this standard is published in the annually issued reference index «National standards», and the text changes and amendments — in monthly indexes published information «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in a monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet
The CONTENTS
1. Scope 2. Normative references 3. Terms and definitions 4. The conditions of the order 5. Classification and designation of 6. Assortment 7. Technical requirements 7.1. General requirements 7.2. Magnetic and technological properties 8. Acceptance rules 9. Test methods 9.1. Sample preparation 9.2. Methods of control and testing 10. Labeling and packaging 11. Certification 12. Transportation and storage 13. Complaints Annex a (informative) Specific magnetic losses of P1,0/50, P1,5/60 fully processed rental of P1,0/50 intermediate Annex B (informative) Typical mechanical properties of rolled electrotechnical steel of ordinary quality and intermediate Annex b (informative) Calculation of characteristics Annex G (informative) Compliance a vintage assortment of fully processed rolled ordinary quality as per GOST R 54480 and GOST 21427.2 Annex D (informative) Compliance a vintage assortment of fully processed steel with high magnetic induction at the 54480 GOST R and GOST 21427.2 Bibliography |
NATIONAL STANDARD OF THE RUSSIAN FEDERATION
COLD ROLLED SpecificationsNon-grain oriented electrical steel strip. Specifications |
Date of introduction — 2012−07−01
1. Scope
This standard applies to cold rolled sheet-alloy and alloy steel electrotechnical isotropic (EIS) to a fully processed state in the form of the intermediate product with guaranteed magnetic properties, intended for the manufacture of magnetic cores (cores) of various kinds of electrical devices.
2. Normative references
This standard uses the regulatory references to the following standards:
GOST R ISO 10002−2007 Management. Customer satisfaction. A guide to claims management in organizations
GOST 427−75 Rulers measuring metal. Specifications
GOST 2789−73 surface Roughness. Parameters and characteristics
GOST 2999−75 Metals and alloys. Method of measurement of hardness by Vickers
GOST 4381−87 Micrometers lever. General specifications
GOST 6507−90 Micrometers. Specifications
GOST 7566−94 metal Products. Acceptance, marking, packing, transportation and storage
GOST 11701−84 Metals. Methods tensile tests of thin sheets and strips
GOST 12119.0−98 electrotechnical Steel. Methods for determining magnetic and electrical properties. General requirements
GOST 12119.4−98 electrotechnical Steel. Methods for determining magnetic and electrical properties. Method of measurement of specific magnetic losses and actual value of magnetic field intensity
GOST 12119.5−98 electrotechnical Steel. Methods for determining magnetic and electrical properties. Method of measurement of magnetic induction amplitudes and magnetic field
GOST 12119.8−98 electrotechnical Steel. Methods for determining magnetic and electrical properties. Method of measurement of resistance ratio of insulating coating
GOST 13813−68 (ISO 7799−85) Metals. Test method for bending of sheets and strips thickness less then 4 mm
GOST 21014−88 ferrous metals. Terms and definitions of defects
GOST 21427.2−83 cold-rolled isotropic electrotechnical Steel sheet. Specifications
GOST 26877−91 metal Products. Methods of measuring form deviations of
Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or published annually by the information sign «National standards» published as on January 1 of the current year and related information published monthly indexes published in the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.
3. Terms and definitions
This standard applies the following terms with respective definitions:
3.1 magnetic induction In Tesla: the measure of the magnetization of the ferromagnetic sample placed in an external magnetic field strength H (A/m).
Magnetic induction and field strength are linked by the following relationship:
B = µ µ0H, (1)
where µ — magnetic permeability, O. E. (relative units);
µ0 is the magnetic constant equal to 4p 10-7 GN/m.
3.2 magnetic losses P, W: of the power of the magnetic field by the sample magnetic material and dissipated as heat when exposed to the material changing in time of the electromagnetic field.
3.3 specific magnetic losses PUD, W/kg Magnetic losses per unit mass of magnetic material.
Loss is determined at specified frequency electromagnetic fields and magnetic induction generated by the field in the magnetic core.
Rental certificate at frequency of 50 Hz and magnetic induction of 1.5 Tesla.
3.4 anisotropy of specific losses DPUD, %: relative difference of magnetic loss of magnetic material measured along and across the direction of rolling.
3.5 thickness variation: Deviation form, characterized by the unevenness of thickness of steel products or parts according to width or length, which represents the difference of maximum and minimum thicknesses of steel at a given distance from the edges (GOST 26877).
3.6 camber: the deviation of the shape in which the edges of the sheet or strip in a horizontal plane have the shape of an arc (GOST 26877).
3.7 warpage: the Deviation from flatness, in which the surface of metal products or individual parts have the form of alternating convexities or concavities, forming at least two peaks of individual waves, not provided for in the form of rental (GOST 26877).
3.8 plasticity: Repetitive bending at 90° in opposite directions flat sample, one end of which is secured in the fixture, consisting of jaws a specified size. Number of bends without breaking characterizes the ductility of the material.
3.9 internal (residual) stresses: The voltage arising at the box office, which may be partially preserved after heat treatment. The maximum clearance between the two parts of the steel strips at their connection on the cut line after cutting characterizes the internal stress.
3.10 curvature: Deviation from straightness, in which not all of the point lying on the geometrical axis of the steel, are equidistant from the horizontal or vertical plane in the longitudinal direction (GOST 26877).
3.11 the fill factor: the Ratio of the theoretical volume filled with metal, determined based on weight and density, to the actual volume received after compression at a given load set (package) of leaves.
3.12 coefficient of resistance of insulating coatings: Effective resistivity of a single layer insulation tested between the overlaid metal contacts and the base metal of the isolated test sample.
3.13
Burr: defect of a surface, representing sharp, a ridge, a ledge formed when cutting metal. [GOST 21014−88, article 47]. |
3.14 aging: an Indicator used in relation to electrical steel to assess the degree of deterioration of its magnetic properties over a specified (long) period of time or over a relatively short period of time with increase in temperature.
3.15 adhesion: strength of adhesion of the insulating coating to the surface of the metallic base rental.
3.16 electrically insulating coating NSH: Coating on an organic basis, does not withstand the temperature of annealing to relieve work hardening, improves stanoevski steel (p-3 [1]). To increase the coefficient of resistance may be added inorganic fillers (p-6 [1]).
3.17 electrically insulating coating TS: Coating on an organic basis, which added film-forming inorganic components in order to improve heat resistance and ceramic fillers to increase the coefficient of resistance, withstands temperatures of annealing to relieve work hardening, improves stanoevski steel (p-5 [1]).
3.18 nonstick coating AS: Thin film and nurture semi-organic coating TSH, anti-caking agent of the precursor during the annealing of finished products for consumers (class C-5-AS for [1]).
3.19 rolled fully processed: cold-rolled steel, produced by technology of a complete process with a final annealing to obtain the magnetic properties in the delivery condition.
3.20 half-finished material: cold-rolled steel, produced by technology of polyprocess without final annealing to obtain the magnetic properties as supplied with guaranteed magnetic properties after annealing of magnetic cores (cores) of electrical devices.
4. The conditions of the order
4.1. Basic data referred to when ordering:
— mark (symbol);
— the designation of this standard;
— type of steel (coil, sheet, strip);
— nominal dimensions;
— mass;
— the type (class) of the insulation coating;
— volume of required tests and appropriate test certificate.
4.2. Additional data specified when ordering:
— the validity of the welds and their labelling;
— requirements to the surface quality;
— suitability for forging and cutting;
— typical density values;
the transverse thickness variation for a narrow band and its measurement;
— the fill factor;
— requirements for residual curvature;
— the minimum resistance ratio of insulating coating;
— requirements for mechanical properties of rolled;
— temperature testing;
— marking of hire.
In the absence of additional requirements to rent must correspond to the main specifications of this standard.
5. Classification and designation of
5.1. Rentals are divided as follows:
— by product:
roll;
— list — a roll, cut into predetermined lengths;
feed — roll, spread on strips of certain width;
according to the method of production (rolling), structural state of steel:
— D — rolled steel cold-rolled electrical isotropic steel;
— according to the requirements of magnetic properties into classes:
— And — rolled fully processed in the normal quality;
— AR — rolled fully processed with high magnetic induction;
— To — intermediate;
— types of coating:
— permastone insulating organic coating that improves stanoevski, — NSH;
— nurture semi-organic insulating heat-resistant coating that improves stanoevski, — SH;
— with coating to prevent adhesion of the intermediate annealing, — AS.
5.2. Marking stamps
The designation marks consists of letters and numbers arranged in a sequence, for example D600−50A,
where:
— the letter D — rolled cold-rolled isotropic;
— three digits after the D — factor normalized maximum value of the specific magnetic loss for alternating magnetization;
— two numbers (separated by a hyphen) is one hundred times the nominal thickness of the rolling, mm;
— A, AR, — letter designation class of steel.
6. Assortment
6.1. Dimensions and limit deviations
Rentals are made in the form of coils, sheets and strips, cut from the rolls, with the thickness of 0,27; 0,35; 0,50; 0,65; 1.00 mm in the fully treated condition and a thickness of 0,50; 0,65 mm in the semi-product.
The inner diameter of the roll shall be (500 ± 10) mm. Outer roll diameter should be no more than 1500 mm.
Maximum deviations in thickness of the rolled nominal thickness must not exceed: (0,27 ± 0,02) mm (0,35 ± 0,03) mm (0,50 ± 0,04) mm (0,65 ± 0,04) mm (1,00 ± 0,05) mm.
The thickness variation across the width of the rental should not exceed 0.020 mm when the nominal plate thickness of 0,27; 0,35; 0,50 mm and not more than 0,030 mm with a nominal thickness of 0.65; 1.00 mm. For rental of a width of 150 mm and less between the supplier and customer can be aligned to different value of thickness variation.
The variable thickness along the length measured along the longitudinal axis of the rental should not exceed 0.02 mm for nominal thickness of 0.27 mm rentals; 0.03 mm — 0.35 mm; 0.04 mm — 0.50 mm and 0.65 mm; 0.05 mm — 1.00 mm.
6.2. Rental supply in rolls, sheets and tape with a nominal width not exceeding 1 250 mm. width of hire agreed when ordering.
6.3. Coils, sheets and strips are manufactured from obraznymi edges. Limit deviations must meet the requirements specified in table 1.
Table 1 — tolerances for width
In millimeters
| Nominal width, mm | Limit deviations, mm |
| To 150 incl. | 0 |
| +0,2 | |
| SV. 150 «300 « | 0 |
| +0,3 | |
| «300» 600 « | 0 |
| +0,5 | |
| «600» 1000 « | 0 |
| +1,0 | |
| «1000» 1250 « | 0 |
| +1,5 | |
| Note — By agreement with the client with the manufacturer, the rental can be made with the specified negative values of the limit deviations of nominal width. | |
6.4. Length of sheets and maximum deviations in length — by agreement with the client with the manufacturer. Maximum deviations along the length of the sheets should not exceed +0,5%/-0, but not more than +6 mm.
6.5. When winding the strip in the coil or strip should be sufficiently tight to avoid deformation of the rolls under its own weight when lifting the bracket and mount on the horizontal axis.
The coils can have seams, but welded. The validity, number of welds and their labeling agree to the request and when ordering.
Coils with welded joints shall consist of steel of the same brand, the same size and the same type of coverage.
Thickening from the weld relative to the measured thickness of the sheet, roll or tape must not exceed 0,050 mm.
6.6. Camber rolled should not exceed 0.5 mm and length 1.0 m.
6.7. Deviation from flatness shall not exceed 1.5%. The definition of flatness is carried out on the hire of a width exceeding 100 mm.
6.8. Basically a telescoping of rolls should not exceed 7 mm. One or two inner or outer coil can protrude above the surface of the end coil.
6.9. The amount of residual curvature (distance between the bottom edge of the test sample and the reference plate) to the thickness of 0,27; 0,35; 0,50; 0,65 mm should not exceed 35 mm. Requirements to the magnitude of the residual curvature of the rolled thickness of 1 mm to be agreed when ordering.
The definition of the curvature is carried out for a rolled width of 100 mm or more.
6.10. The height of the Burr on the edges of the rent should not exceed 0.020 mm.
Examples of symbols
Rolled sheet in coil thickness 0.50 mm, width 1000 mm of steel grade Д310−50A
Roll 0,501000 — Д310−50A GOST R 54480
Rolled sheet in sheets thickness 0.35 mm, width 400 mm of steel grade Д270−35A
Sheet 0,35400 — Д270−35A GOST R 54480
Tape with a thickness of 0.50 mm, a width of 300 mm of steel grade Д660−50K
Tape 0,50300 — Д660−50K GOST R 54480
7. Technical requirements
Rental supply in accordance with the requirements of this standard and of the order according to the technical documentation, duly approved.
7.1. General requirements
7.1.1. Method of smelting steel chemical composition and manufacturing technology of the rental is defined by the manufacturer in accordance with the approved engineering documentation.
If changes in the production of steel may lead to changing technical and (or) technological characteristics of the rental at the end user, the manufacturer of the rental, you should notify the buyer until delivery.
7.1.2. Rental is delivered in fully processed state or in the form of intermediate.
7.1.3. Cold rolled fully processed state supply two-way permastone organic insulating coating NSH or bilateral and nurture semi-organic insulating heat-resistant coating scheme that improves stanoevski.
Cold-rolled steel in the form of supply without intermediate coatings with specified surface finish or nonstick coating AS.
Surface condition agree when prompted and when ordering.
Note — by agreement between the consumer and manufacturer products can be supplied with other coatings or uncoated.
7.1.4. Rental in the state of delivery must have a surface without captured, bubbles, rust, holes and cracks. Allowed individual scratches, udivleny and other minor defects, provided they do not exceed the limit deviation on thickness.
7.2. Magnetic and technological properties
7.2.1. The magnetic properties and the fill factor of rent in the state of delivery must conform to the standards specified in tables 2, 3, 4.
7.2.2. Ductility is determined for fully processed the rental. The plasticity of the hire must ensure that the number of kinks corresponding to the requirements specified in tables 2, 3.
Table 2 technological and Magnetic properties of fully processed rental normal quality
| Steel grade | Nominal thickness, mm | Magnetic properties | A fill factor of not less than | The minimum number of bends | The typical density of2), kg/DM3 | ||
| Specific magnetic losses1)P1,5/50, W/kg, not more | Magnetic induction B2500, T, not less | Anisotropy of the specific magnetic losses DP1,5/50, %, not more | |||||
| D19,5−27A | 0,27 | P1,0/40019,5 | Of 1.47 | ± 18 | 0,92 | 2 | 7,60 |
| Д250−35A | 0,35 | 2,50 | 1,49 | ± 17 | 0,95 | 2 | 7,60 |
| Д270−35A | 2,70 | 1,49 | ± 17 | 0,95 | 2 | 7,65 | |
| Д300−35A | Of 3.00 | 1,49 | ± 17 | 0,95 | 3 | 7,65 | |
| Д330−35A | 3,30 | 1,49 | ± 17 | 0,95 | 3 | 7,65 | |
| Д250−50A | 0,50 | 2,50 | 1,49 | ± 17 | 0,97 | 2 | 7,60 |
| Д270−50A | 2,70 | 1,49 | ± 17 | 0,97 | 2 | 7,60 | |
| Д290−50A | 2,90 | 1,49 | ± 17 | 0,97 | 2 | 7,60 | |
| Д310−50A | 3,10 | 1,49 | ± 14 | 0,97 | 3 | 7,65 | |
| Д330−50A | 3,30 | 1,49 | ± 14 | 0,97 | 3 | 7,65 | |
| Д350−50A | 3,50 | 1,50 | ± 14 | 0,97 | 5 | 7,65 | |
| Д400−50A | Of 4.00 | 1,53 | ± 12 | 0,97 | 5 | 7,70 | |
| Д470−50A | 4,70 | 1,54 | ± 10 | 0,97 | 10 | 7,70 | |
| Д530−50A | 5,30 | 1,56 | ± 10 | 0,97 | 10 | 7,70 | |
| D600−50A | 6,00 | 1,57 | ± 10 | 0,97 | 10 | 7,75 | |
| D700−50A | 7,00 | 1,60 | ± 10 | 0,97 | 10 | 7,80 | |
| D800−50A | 8,00 | 1,60 | ± 10 | 0,97 | 10 | 7,80 | |
| Д940−50A | 9,40 | 1,62 | ± 8 | 0,97 | 10 | 7,85 | |
| Д310−65A | 0,65 | 3,10 | 1,49 | ± 15 | 0,97 | 2 | 7,60 |
| Д330−65A | 3,30 | 1,49 | ± 15 | 0,97 | 2 | 7,60 | |
| Д350−65A | 3,50 | 1,49 | ± 14 | 0,97 | 2 | 7,60 | |
| Д400−65A | Of 4.00 | 1.52 m | ± 14 | 0,97 | 2 | 7,65 | |
| Д470−65A | 4,70 | 1,53 | ± 12 | 0,97 | 5 | 7,65 | |
| Д530−65A | 5,30 | 1,54 | ± 12 | 0,97 | 5 | 7,70 | |
| D600−65A | 6,00 | 1,56 | ± 10 | 0,97 | 10 | 7,75 | |
| D700−65A | 7,00 | 1,57 | ± 10 | 0,97 | 10 | 7,75 | |
| D800−65A | 8,00 | 1,60 | ± 10 | 0,97 | 10 | 7,80 | |
| Д1000−65A | 10,00 | Of 1.61 | ± 10 | 0,97 | 10 | 7,80 | |
| D600−100A | Of 1.00 | 6,00 | 1,53 | ± 10 | 0,98 | 2 | 7,60 |
| D700−100A | 7,00 | 1,54 | ± 8 | 0,98 | 3 | 7,65 | |
| D800−100A | 8,00 | 1,56 | ± 8 | 0,98 | 5 | 7,70 | |
| Д1000−100A | 10,00 | 1,58 | ± 8 | 0,98 | 10 | 7,80 | |
| Д1300−100A | 13,00 | 1,60 | ± 8 | 0,98 | 10 | 7,80 | |
1) Given specific losses of products with thickness 0,35; 0,50; 0,65 mm for aged specimens with plate thickness of 0,27; 1.00 mm for samples without aging. 2) Other density values can be specified upon request and at checkout. | |||||||
Table 3. Magnetic and technological properties of fully processed steel with high magnetic induction
| Steel grade | Nominal thickness, mm | Magnetic properties | A fill factor of not less than | The minimum number of bends | The typical density of2), kg/DM3 | ||
| Specific magnetic losses1)P1,5/50, W/kg, not more | Magnetic induction B2500, T, not less | Anisotropy of the specific magnetic losses DP1,5/50, %, not more | |||||
| Д310−50AR | 0,50 | 3,10 | 1.55 V | ± 14 | 0,97 | 3 | 7,70 |
| Д330−50AR | 3,30 | 1.55 V | ± 14 | 0,97 | 3 | 7,70 | |
| Д350−50AR | 3,50 | 1,59 | ± 12 | 0,97 | 5 | 7,65 | |
| Д400−50AR | Of 4.00 | Of 1.61 | ± 12 | 0,97 | 5 | 7,70 | |
| Д450−50AR | 4,50 | 1,64 | ± 12 | 0,97 | 5 | 7,70 | |
| D500−50AR | 5,00 | 1,65 | ± 12 | 0,97 | 10 | 7,80 | |
| Д530−50AR | 5,30 | 1,62 | ± 10 | 0,97 | 10 | 7,80 | |
| D600−50AR | 6,00 | 1,64 | ± 10 | 0,97 | 10 | 7,80 | |
| D700−50AR | 7,00 | 1,66 | ± 10 | 0,97 | 10 | 7,85 | |
| D800−50AR | 8,00 | 1,66 | ± 10 | 0,97 | 10 | 7,85 | |
| Д350−65АР | 0,65 | 3,50 | 1,57 | ± 12 | 0,97 | 5 | 7,60 |
| D700−65АР | 7,00 | 1,64 | ± 10 | 0,97 | 10 | 7,80 | |
| D800−65АР | 8,00 | 1,66 | ± 10 | 0,97 | 10 | 7,80 | |
1) Given specific losses of rental with thickness of 0,50; 0,65 mm for aged samples. 2) Other density values can be specified when you request and order. | |||||||
Table 4 — Magnetic and technological properties of the intermediate
| Steel grade | Thickness, mm | The certification temperature of annealing, °C (± 10 °C) | Magnetic properties | The typical density of2), kg/DM3 | |
| Specific magnetic losses P1,5/50, W/kg, not more | Magnetic induction1) In2500, T, not less | ||||
| Д340−50K | 0,50 | 840 | 3,40 | 1,54 | 7,65 |
| D390−50K | 840 | 3,90 | 1,56 | 7,70 | |
| Д450−50K | 790 | 4,50 | 1,57 | 7,75 | |
| Д560−50K | 790 | 5,60 | 1,58 | 7,80 | |
| Д660−50K | 790 | 6,60 | 1,62 | 7,85 | |
| Д890−50K | 790 | 8,90 | 1,60 | 7,85 | |
| Д1050−50K | 790 | 10,50 | 1,57 | 7,85 | |
| D390−65K | 0,65 | 840 | 3,90 | 1,54 | 7,65 |
| Д450−65K | 840 | 4,50 | 1,56 | 7,70 | |
| Д520−65K | 790 | 5,20 | 1,57 | 7,75 | |
| Д630−65K | 790 | 6,30 | 1,58 | 7,80 | |
| D800−65K | 790 | 8,00 | 1,62 | 7,85 | |
| Д1000−65K | 790 | 10,00 | 1,60 | 7,85 | |
| Д1200−65K | 790 | 12,00 | 1,57 | 7,85 | |
1) Values apply only to the samples after the attestation of annealing, anisotropy of magnetic loss and magnetic induction can be specified when you request and order. 2) Other density values can be specified when you request and order. | |||||
7.2.3. The internal stresses determined for fully processed rolled, of a width exceeding 150 mm. the Maximum gap between the cut lines, which characterizes the magnitude of internal stresses should not exceed 2 mm.
7.2.4. The drag coefficient double-sided insulation coating SH and NSH must be at least 3.0 Ohm cm2. Another value of the minimum coefficient of drag of coverage or requirements for minimum resistance factor of the coating for each side of the rental, as well as requirements for resistance to coolants and oils, weldability, the customer agrees with the manufacturer when ordering.
7.2.5. Electrically insulating coating TSH must maintain the grip with a metal base and provide a minimum resistance of 1.0 Ohm cm2 when heated to 450 °C for 2 h in air or when heated to 750 °C for 2 h in a protective atmosphere.
If necessary, the authority may agree with the manufacturer and other requirements for the annealing conditions in the order.
NSH insulating coating must maintain adhesion to a metal basis and to provide a minimum coefficient of resistance, agreed upon between the purchaser and the manufacturer when ordering, when heated to 200 °C for 2 h in air.
7.2.6. To the nonstick coating AS preventing the adhesion of the precursor during the annealing, the requirements for the resistance coefficient and thickness do not show.
7.2.7. Coverage rental should not be peeling when bending the sample 90° and when cutting.
7.2.8. The ageing factor is completely processed the rental Desk at energy-losses should not exceed 6%.
In case of exceeding the norms in the coefficient aging rental otestovat mark corresponding to the level of specific magnetic losses, obtained on samples after aging.
7.2.9. The sheet and tape apply the results of the test roll, of which was cutting.
7.3. Specific magnetic losses P1,0/50, P1,5/60 fully processed rolled ordinary quality are given in table A. 1 (Appendix A).
7.4. Specific magnetic losses P1,0/50 of the intermediate product are shown in table A. 2 (Appendix A).
7.5. Typical mechanical properties of rolled electrotechnical steel of ordinary quality are given in table B. 1 (Appendix B).
7.6. Typical mechanical properties of the intermediate electrical steel is presented in table B. 2 (Appendix B).
7.7. The design characteristics are given in Appendix B.
7.8. Special requirements for mechanical properties and hardness to ensure the technological properties of hire to the cutting and cutting, if necessary, should be established by agreement between manufacturer and customer.
7.9. A line of fine gauge fully machined rolled ordinary quality GOST R 54480 and GOST 21427.2 are given in table G. 1 (Appendix G).
7.10. Compliance fine assortment of fully processed steel with high magnetic induction 54480 GOST R and GOST 21427.2 are given in table D. 1 (Annex D).
8. Acceptance rules
8.1. General rules of acceptance GOST 7566.
8.2. Rental take parties. For the party, take one coil of the same brand, same size.
8.3. Sampling for tests carried out from each unit of production (batch).
The first inner coil and the outermost coil of the roll of wrapping believe.
Sampling is carried out from the first external or internal revolution of the roll, except for wrapping the coils.
The tape and sheets obtained by cutting the roll to a predetermined width and length, such as one roll.
8.4. Attestation control the size, thickness variation, flatness, camber, surface condition and edges, the magnetic properties, the quality of the coating manufacturer spends on each party.
8.5. Certification control of mechanical properties and hardness, if necessary, is carried out according to the technical requirements agreed between manufacturer and customer.
8.6. Periodic monitoring of fill factor and sound insulating properties of the coating, internal stress, plasticity, mechanical properties, hardness and aging manufacturer holds not less than ten parties per quarter.
If unsatisfactory test results are transferred to qualification tests to get a positive result for three parties in a row.
8.7. If you change the basic formulations or methods of applying insulating coatings carried out routine tests on a single roll.
8.8. If unsatisfactory test results of at least one of the indicators of re-examination it is carried out according to GOST 7566.
8.9. After re-testing the manufacturer has the right to present again to the acceptance testing unit rental, which revealed a failure to meet the conditions of delivery.
9. Test methods
9.1. Sample preparation
9.1.1. Dimensions and limit deviations
To determine the thickness, width, length, longitudinal and transverse thickness variation, deviation from flatness, camber of a roll (batch) is taken from the beginning of one segment length from 1000 to 2000 mm along the direction of rolling.
The sample for measurement of the curvature consists of one cut strip roll length 500+to 2.5/0 mm, a width corresponding to the width of the strip.
9.1.2. Magnetic properties
Samples for the determination of magnetic properties are made from strips of a length of from 280 to 305 mm, width (30,0 ± 0,2) mm. Strips should not differ from each other in length by more than ± 0.5 mm. the Number of stripes in the sample must be a multiple of four, the minimum number of strips is equal to eight.
Half of the strips cut along the rolling direction, and the other half across the direction of rolling, providing a uniform distribution across the width of the strip. The angle between the set direction and the cutting direction of the stripes shall be ± 5°.
The edge strips of the sheets rolled in sample not included.
When the bandwidth is insufficient for the selection of strips to test across the direction of rolling, the strips are taken only in the direction of rolling.
9.1.2.1. Samples for measurement of specific magnetic losses fully processed products with thickness 0,35; 0,50; 0,65 mm shall be subjected to thermal aging. Samples of the rolled thickness of 0.27; 1.00 mm not subjected to aging.
The annealing conditions on the aging
Heating to a temperature of (225 ± 5) °C, holding for 24 h, cooled with an arbitrary velocity to the ambient temperature.
The annealing is subjected to strips, stacked.
9.1.2.2. Samples of the precursor before determining the magnetic properties should be subjected to certification annealing on magnetic properties.
The temperature of annealing
Heating up to the temperature set out in table 4 at a speed of not more than 200 °C/h, holding for 2 h, cooling from the annealing temperature to a temperature of 550 °C at a rate of not more than 120 °C/h.
Gas annealing mode
Decarburization nitrogen-hydrogen atmosphere with a volume fraction of hydrogen from 5% to 20%, with humidity on the dew point from + 18 °C to 22 °C. the Flow rate and pressure of the gas mixture must provide a uniform decarburization stripes.
For a uniform decarburization intermediate strips are placed in a stack, the strips should not have contact with each other (for example, by stitching between the strips of fine wire).
Note — In the case of very low mass fraction of carbon in the steel, the manufacturer may use a non-standard gas annealing mode in neobespecheniya (neutral or reducing) atmosphere and recommend this mode to the consumer.
9.1.3. Technological properties
9.1.3.1. The fill factor is determined on a sample composed of 100 selected to determine the magnetic properties of the strips (cut along and (or) across the direction of rolling), which before the test, remove the burrs.
9.1.3.2. Test bend is carried out on four samples having a width of 20 — 40 mm cut with no visible burrs. The samples cut along and across the direction of rolling. Two samples cut at a distance of 30 — 90 mm from the edge, two samples from the middle of the segment or sheet.
9.1.3.3. For testing the mechanical tensile properties of cut 4 samples for hardness testing 2 sample size (20 ± 0,1)(210 ± 0,5) mm. the samples cut at a distance of 30 — 90 mm from the edge along the direction of rolling.
9.1.3.4. For determination of internal stresses for party rental experience one sample.
A sample length of 1,000 mm and a width equal to the width of the roll, cut into two parts in the direction of rolling around the middle of the strip width.
9.1.3.5. To determine the coefficient of resistance of insulation coating from each roll (of the party) take and test one sample.
9.1.3.6. For evaluation of adhesion (the adhesive strength of the insulating coating to the metal) of each roll (of the party) take and test one sample cut along the rolling direction length of from 280 to 305 mm and width 30 mm.
9.1.3.7. Regulated to control the surface roughness of hire, provided as intermediate product, from each roll (of the party) take and test one sample size (50 ± 0,2)(50 ± 0,2) mm.
9.2. Methods of control and testing
The conditions for testing the technical characteristics of the car — in accordance with GOST 12119.0 if the following additional conditions.
All the measuring instruments used to determine the quality of the finished product must be included in the State registry of measuring and have calibration certificates issued by the organizations accredited in the established order.
9.2.1. The control of dimensions, limit deviations and shape of the rolled
9.2.1.1. The size of the rental check of the measuring tool: the thickness with a micrometer according to GOST GOST 6507или 4381, the width of the metal ruler according to GOST 427 or other means of measuring the respective accuracy.
Note — For accurate measurement of thickness of hire, it is possible to use a radioisotope and x-ray thickness gauges.
9.2.1.2. The average actual thickness of the hire is determined by the measurement results of the sample length from 1000 to 1500 mm at four points located on each side of the middle of the sample at a distance of not less than 20 mm from the edges.
9.2.1.3. Lateral thickness variation is determined on the rental of a width exceeding 150 mm in the four points located at the two edges across the direction of rolling at a minimum distance of 15 mm from the edge of the rental.
9.2.1.4. The longitudinal thickness variation is determined in the direction of rolling at six points located on each side of the middle of the sample at a distance of not less than 15 mm from the edge of the rental.
9.2.1.5. Width measured across the longitudinal axis of the rental.
Maximum deviation in width is the maximum deviation of width from nominal.
9.2.1.6. Control of the deviation from flatness, camber, curvature is carried out according to GOST 26877.
9.2.1.7. Determination of deviation from flatness is performed on the rolled width more than 100 mm in the direction of rolling.
9.2.1.8. Determination of residual curvature is carried out on a sample length of 500 mm and a width equal to the width of the rolled, cut in direction of rolling. The definition of the curvature are for the rental of a width exceeding 100 mm.
9.2.1.9. The height of the Burr on the edge of the rental is determined with a micrometer as the difference between the measurements of the sample on edge and at a distance of 10 mm from the edge.
9.2.2. Control surfaces are completely processed rental and intermediate with nonstick coating is carried out visually.
The control regulated the surface roughness of hire, provided as intermediate product, is carried out according to GOST 2789.
9.2.3. Magnetic properties
9.2.3.1. Measuring the magnetic induction and the specific magnetic losses is carried out in accordance with the requirements of GOST 12119.4, GOST 12119.5.
The measurements of magnetic properties taking the density of steel specified in tables 2, 3, 4.
For measurements with increased accuracy take a calculated density depending on the mass fraction of silicon and aluminum in steel (In the app).
At the request of customers allowed to conduct measurements with the use of foreign standards-analogues for these types of tests.
Note — allowed measurement of the magnetic properties of other methods, including using plants for continuous control type EVA, to ensure the necessary accuracy, entered into the State register of measuring instruments and provided with valid verification certificates issued by the organizations accredited in the established order.
9.2.3.2. To determine the anisotropy of the specific magnetic losses is carried out measurement of specific magnetic losses PW/kg, separately on the samples of Epstein strips taken along and across the direction of rolling. The anisotropy of losses DP, %, is calculated by the formula
(2)
where P1 and P2 — specific magnetic losses across and along the direction of rolling, respectively.
9.2.3.3. For the determination of the aging sample Epstein after determining the magnetic properties is subjected to annealing (thermal aging) according to the mode shown
(3)
where P1 and P2 — specific magnetic losses before and after aging, respectively.
Test EIS on aging is carried out selectively on the ten parties in the quarter.
9.2.4. Technological properties
9.2.4.1. The fill factor
The sample is pressed evenly across the surface under pressure 0,35 N/mm2. The height of the compressed sample is measured with an error of less than 0.1 mm in four opposite places. For the height take the arithmetic mean of results of four measurements.
The fill factor K is calculated by the formula
(4)
where t is the mass of sample, kg, determined with an accuracy of 0.005 kg;
V — volume of sample after pressovaniya determined according to the measurement results of the bundle, m3;
g — the density of steel, kg/m3.
Test hire selectively conduct ten parties in the quarter.
9.2.4.2. The number of kinks
The tests are carried out according to GOST 13813 using the device for the test strip at the bend with a radius of curvature of the jaws 5 mm at a temperature of from 15 °C to 35 °C.
During the test shall be provided with a permanent adhesion of the sample to the surface of the sponges.
Single bend from the starting position at 90° and back to original position consider number of inflection 1.
Test is interrupted at the first appearance of cracks, visible to the naked eye, on the base material. The obtained values of the number of bends are rounded to the nearest whole number.
As the evaluation result using the arithmetic average of the four samples.
9.2.4.3. Mechanical properties tensile
The tests are carried out according to GOST 11701. Allowed to use non-destructive methods of control.
9.2.4.4. Hardness
The tests are carried out according to GOST 2999 at a load of 5 kg.
9.2.4.5. Internal voltage
A sample length of 1,000 mm and a width equal to the width of the roll, cut into two parts in the direction of rolling around the middle of the strip width. The two parts join along the line of the cut flat plate and carry a maximum clearance dimension between the cutting lines characterizing the magnitude of internal stresses.
9.2.4.6. The resistance ratio of insulating coating
Measurement of current and resistance coefficient of the coating is carried out in accordance with GOST 12119.8.
Current measurements carried out on the same sample at two sites on each side of the samples, i.e. four times.
According to the measurement results calculate the following parameters:
— average amperage on the bottom of the strip;
— average amperage to the top of the strip;
— average amperage on both sides.
Coefficient of resistance R, Ohm cm2, on both sides of the sample is calculated by the formula
R = 6,45 (1/ICP — 1), (5)
where ICP is the average value of the current on both sides, A.
Coefficient of resistance R, Ohm cm2 on one side of the sample is calculated by the formula
R = 6,45 (0,5/ISR — 0.5), and (6)
where ICP is the average value of the current on one side, A.
9.2.4.7. The adhesion of the insulation surface
For testing the adhesive strength of the coating with the metal base sample pressed against the rod with 5 mm diameter and smoothly bent 90° around the web.
Visual inspection should be free of cracks and peeling on the outside of the sample in the testing device.
10. Labeling and packaging
10.1. Labeling and packaging — according to GOST 7566 with the following additions.
10.2. Each roll must have a manufacturer’s label of the established sample.
10.3. Label that contains information about the coil should be placed:
— on the inner side of the roll;
on the outside of the roll;
— the external protective packaging (if using).
10.4. On the labels of a roll or stack of sheets indicate the trademark of the manufacturer, the melting number, batch number, size of rental, mass.
On the label of the protective outer package additionally represent the brand of rental.
10.5. Bulk rolls or packs of sheets must be agreed upon ordering between the purchaser and the manufacturer. The maximum deviation of the net weight of coils shall be not more than ± 10 kg.
Bulk rolls or packs of sheets in the package and their sizes must meet the conditions for supply.
10.6. The packaging should be done in accordance with the approved schemes and to protect the rental from mechanical damage and environmental influences during loading, transportation and storage.
11. Certification
11.1. The manufacturer must provide the customer with the goods delivery a quality certificate including information about the test results of each batch of rolled, confirming compliance with the specification on delivery.
11.2. At the request of the customer, the manufacturer must provide a safety certificate for rental in accordance with applicable law.
12. Transportation and storage
12.1. General requirements for transportation and storage — by GOST 7566 with the following additions.
12.2. Rental transporterowych by all kinds of transport in accordance with cargo carriage regulations applicable to transport of this species.
Transport rental rail transport is carried out in covered wagons, platforms or open wagons in accordance with the rules of cargo transportation by rail.
12.3. Rental in unopened manufacturer’s packaging must be stored in covered warehouses excluding ingress of moisture.
Maximum warranty period of storage without deterioration of consumer properties at the surface to six months from the date of delivery.
13. Complaints
The manufacturer guarantees the rental of this standard, in compliance with the requirements for transportation and storage.
The customer must give the manufacturer the opportunity to verify the validity of claims, namely through the provision of products which the identified claim, and documents on products.
The complaint filed in accordance with GOST R ISO 10002.
Annex a (informative)
Specific magnetic losses P1,0/50, P1,5/60 fully processed rental
usual quality and P1,0/50 intermediate
Table A. 1 — Specific magnetic losses P1,0/50, P1,5/60 fully processed rental normal quality
| Steel grade | Nominal thickness, mm | Specific magnetic loss W/kg, not more | |
| P1,0/50 | P1,5/60 | ||
| D19,5−27A | 0,27 | P0,75/40010,7 | - |
| Д250−35A | 0,35 | Of 1.00 | 3,14 |
| Д270−35A | 1,10 | 3,36 | |
| Д300−35A | 1,20 | 3,74 | |
| Д330−35A | 1,30 | 4,12 | |
| Д250−50A | 0,50 | 1,05 | 3,21 |
| Д270−50A | 1,10 | 3,47 | |
| Д290−50A | 1,15 | 3,71 | |
| Д310−50A | Of 1.23 | 3,95 | |
| Д330−50A | 1,35 | 4,20 | |
| Д350−50A | 1,50 | 4,45 | |
| Д400−50A | 1,70 | 5,10 | |
| Д470−50A | Of 2.00 | 5,90 | |
| Д530−50A | 2,30 | Of 6.65 | |
| D600−50A | 2,60 | Of 7.53 | |
| D700−50A | Of 3.00 | 8,79 | |
| D800−50A | 3,60 | 10,06 | |
| Д940−50A | 4,20 | Of 11.84 | |
| Д310−65A | 0,65 | 1,25 | 4,08 |
| Д330−65A | 1,35 | 4,30 | |
| Д350−65A | 1,50 | 4,57 | |
| Д400−65A | 1,70 | 5,20 | |
| Д470−65A | Of 2.00 | Of 6.13 | |
| Д530−65A | 2,30 | 6,84 | |
| D600−65A | 2,60 | Of 7.71 | |
| D700−65A | Of 3.00 | Of 8.96 | |
| D800−65A | 3,60 | Of 10.26 | |
| Д1000−65A | 4,40 | 12,77 | |
| D600−100A | Of 1.00 | 2,60 | 8,14 |
| D700−100A | Of 3.00 | Of 9.38 | |
| D800−100A | 3,60 | 10,70 | |
| Д1000−100A | 4,40 | 13,39 | |
| Д1300−100A | 5,60 | Of 17.34 | |
Table A. 2 — Specific magnetic losses P1,0/50 intermediate
| Steel grade | Thickness, mm | Specific magnetic losses1)P1,0/50, W/kg, not more |
| Д340−50K | 0,50 | 1,42 |
| D390−50K | 1,62 | |
| Д450−50K | 1,92 | |
| Д560−50K | 2,42 | |
| Д660−50K | 2,80 | |
| Д890−50K | 3,70 | |
| Д1050−50K | 4,30 | |
| D390−65K | 0,65 | 1,62 |
| Д450−65K | 1,92 | |
| Д520−65K | 2,22 | |
| Д630−65K | Of 2.72 | |
| D800−65K | 3,30 | |
| Д1000−65K | 4,20 | |
| Д1200−65K | 5,00 | |
| 1) Values apply only to the samples after the annealing and certification. | ||
Appendix B
(reference)
Typical mechanical properties of rolled electrotechnical steel of ordinary quality and intermediate
Table B. 1 — Typical mechanical properties of rolled electrotechnical steel of ordinary quality
| Steel grade | Mechanical properties | |||||
| Excesses. | HV5, ed. | st, N/mm2 | sin, N/mm2 | st/ sin | δ50, % | |
| Д300−35A | > 3 | 182 | 359 | 482 | 0,75 | 19 |
| Д330−35A | (171 — 202) | (330 — 420) | (450 — 540) | (0,72 — 0,78) | (13 — 25) | |
| Д290−50A | > 3 | 191 | 366 | 496 | 0,74 | 20 |
| (188 — 195) | (355 — 380) | (480 — 515) | (0,73 — 0,75) | (19 — 24) | ||
| Д310−50A | 9 | 195 | 392 | 510 | 0,77 | 21 |
| (6 — 12) | (191 — 205) | (355 — 125) | (470 — 545) | (0,76 — 0,78) | (19 — 23) | |
| Д330−50A | 11 | 197 | 392 | 511 | 0,77 | 20 |
| (6 — 15) | (186 — 210) | (365 — 430) | (485 — 555) | (0,74 — 0,79) | (16 — 24) | |
| Д350−50A | 14 | 195 | 395 | 515 | 0,77 | 18 |
| Д400−50A | 15 | 168 | 336 | 488 | 0,69 | 27 |
| (154 — 193) | (240 — 370) | (390 — 525) | (0,59 — 0,88) | (21 — 33) | ||
| Д470−50A | 15 | 126 | 234 | 403 | 0,58 | 30 |
| (117 — 141) | (205 — 300) | (380 — 455) | (0,53 — 0,66) | (23 — 34) | ||
| Д530−50A | 15 | 128 | 248 | 411 | 0,60 | 29 |
| (122 — 137) | (215 — 290) | (380 — 445) | (0,55 — 0,66) | (27 — 33) | ||
| D600−50A | 15 | 130 | 259 | 411 | 0,63 | 28 |
| (121 — 141) | (235 — 300) | (395 — 455) | (0,59 — 0,69) | (24 — 30) | ||
| D700−50A | 15 | 125,5 | 235 | 382,5 | 0,61 | 27,5 |
| (125 — 126) | (230 — 240) | (380 — 385) | (0,61 — 0,62) | (27 — 28) | ||
| D800−50A | > 10 | 123 | 243 | 404 | 0,62 | 30,5 |
| (110 — 140) | (185 — 290) | (350 — 425) | (0,53 — 0,71) | (26 — 34) | ||
| Д940−50A | > 10 | 118 | 228 | 383 | 0,60 | 32 |
| (108 — 131) | (200 — 260) | (365 — 425) | (0,54 — 0,65) | (29 — 36) | ||
| Д400−65A | 11 | 202 | 400 | 528 | 0,76 | 21 |
| (7 — 13) | (191 — 215) | (380 — 420) | (510 — 555) | (0,73 — 0,79) | (14 — 26) | |
| Д470−65A | > 5 | 168 | 325 | 470 | 0,69 | 28 |
| (157 — 178) | (305 — 345) | (450 — 490) | (0,67 — 0,72) | (24 — 32) | ||
| Д530−65A | > 5 | 149 | 276 | 440 | 0,63 | 30 |
| (143 — 165) | (340 — 360) | (425 — 500) | (0,60 — 0,68) | (27 — 32) | ||
| D600−65A | 15 | 131 | 245 | 408 | 0,60 | 30 |
| (124 — 144) | (220 — 270) | (390 — 430) | (0,56 — 0,64) | (25 — 33) | ||
| D700−65A | > 10 | 138 | 302 | 400 | 0,65 | 31 |
| (116 — 161) | (225 — 360) | (380 — 475) | (0,61 — 0,68) | (27 — 34) | ||
| D800−65A | > 10 | 126 | 231 | 383 | 0,60 | 32 |
| (112 — 153) | (190 — 373) | (295 — 445) | (0,53 — 0,71) | (28 — 35) | ||
| Д1000−65A | > 10 | - | - | - | - | - |
| Д1000−100A | 15 | 131 | 231 | 400 | 0,58 | 32,6 |
| Д1300−100A | (130 — 132) | (225 — 240) | (395 — 405) | (0,56 — 0,59) | (32 — 33) | |
| Note — the Average value of the measurements (minimum — maximum value of the measurements). | ||||||
Table B. 2 — Typical mechanical properties of the intermediate electrical steel
| Steel grade | Mechanical properties | ||||
| HV5, ed. | st, N/mm2 | sin, N/mm2 | st/sin | δ50, % | |
| Д660−50K | 155 | 410 | 490 | 0,84 | 28 |
| (145 — 170) | (370 — 460) | (460 — 520) | (0,80 — 0,88) | (24 — 23) | |
| D800−65K | 152 | 400 | 480 | 0,835 | 28 |
| (140 — 175) | (370 — 450) | (450 — 530) | (0,79 — 0,88) | (24 — 33) | |
| Д660−50K | 161 | 405 | 495 | 0,825 | 28 |
| (148 — 173) | (370 — 440) | (460 — 520) | (0,78 — 0,87) | (24 — 33) | |
| D800−65K | 160 | 410 | 497 | 0,825 | 28 |
| (148 — 172) | (385 — 440) | (460 — 525) | (0,79 — 0,86) | (23 — 33) | |
| Д450−50K | (158 — 160) | (445 — 450) | (530 — 560) | (0,84 — 0,85) | (26 — 27) |
| Д520−65K | (164 — 192) | (410 — 450) | (485 — 530) | (0,81 — 0,86) | (24 — 29) |
| Note — the Average value of the measurements (minimum — maximum value of the measurements). | |||||
Annex b (informative)
The design characteristics
1. When you request and order, by agreement between the manufacturer and the customer to determine density, you can use the following equation (DIN EN 10341, Annex b):
ρ = [7,865 — 0,065 (CSi + 1,7WithAl)], (B. 1)
where ρ is the numeric density, kg/DM2;
CSi numerical value of the mass fraction of silicon, %;
WithAl — numeric value of the mass fraction of aluminum, %.
2. The assumed density of steel to test magnetic properties are used depending on the mass fraction of silicon and aluminium in steel, as shown in table B. 1.
Table B. 1
| % Si + 1,7% Al | The estimated density, g/cm3 |
| 0,00 — 0,65 | 7,85 |
| 0,60 — 1,40 | 7,80 |
| 1,41 — of 2.15 | 7,75 |
| Of 2.16 to 2.95 | 7,70 |
| 2,90 — 3,70 | 7,65 |
| 3,71 — 4,50 | 7,60 |
3. The value of the specific magnetic loss P1,5/60, W/kg or W/lb, determined by calculation according to the formulas:
P1,5/60 (W/kg) = 1,31 P1,5/50 (W/kg), (V. 2)
P1,5/60 (W/lb) = 0,595 P1,5/50 (W/kg). (V. 3)
By agreement between manufacturer and the customer value of specific magnetic losses Pof 1.5/60 is allowed to determine by direct measurements.
4. Private (internal, true) magnetization of the ferromagnetic sample, the magnetic polarization J,T, can be calculated according to the formula
J = B — µ0H, (B. 4)
where B — magnetic induction, T;
µ0 is the magnetic constant equal to 4p 10-7, H/m;
H — magnetic field strength, A/m.
Annex G (informative)
A line of fine gauge fully machined rolled ordinary quality as per GOST R 54480 and GOST 21427.2
Table G. 1
| Steel grade according to GOST Р54480 | Nominal thickness, mm | Magnetic properties | Brand (symbol) became the graveyard 21427.2 | Nominal thickness, mm | Magnetic properties | ||||
| Specific magnetic losses P1,5/50, W/kg, not more | Magnetic induction B2500, T, not less |
Anisotropy of the specific magnetic потерьDP1,5/50, %, not more | Specific magnetic lossesP1,5/50, W/kg, not more | Magnetic inductionB2500, T, not less | Anisotropy of the specific magnetic потерьDP1,5/50, %, not more | ||||
| D19,5−27A | 0,27 | P1,0/400 | Of 1.47 | ± 18 | 2421 | 0,27 | R1,0/400 | Of 1.47 | ± 18 |
| 19,5 | 19,5 | ||||||||
| Д250−35A | 0,35 | 2,50 | 1,49 | ± 17 | 2413 | 0,35 | 2,50 | 1,50 | ± 18 |
| Д270−35A | 2,70 | 1,49 | ± 17 | 2412 | 2,70 | 1,50 | ± 18 | ||
| Д300−35A | Of 3.00 | 1,49 | ± 17 | 2411 | Of 3.00 | 1,50 | ± 18 | ||
| Д330−35A | 3,30 | 1,49 | ± 17 | - | - | - | - | ||
| Д250−50A | 0,50 | 2,50 | 1,49 | ± 17 | - | 0,50 | - | - | - |
| Д270−50A | 2,70 | 1,49 | ± 17 | 2414 | 2,70 | 1,49 | ± 18 | ||
| Д290−50A | 2,90 | 1,49 | ± 17 | 2413 | 2,90 | 1,50 | ± 18 | ||
| Д310−50A | 3,10 | 1,49 | ± 14 | 2412 | 3,10 | 1,50 | ± 18 | ||
| Д330−50A | 3,30 | 1,49 | ± 14 | - | - | - | - | ||
| Д350−50A | 3,50 | 1,50 | ± 12 | - | - | - | - | ||
| - | - | - | - | 2411 | 3,60 | 1,49 | ± 18 | ||
| Д400−50A | Of 4.00 | 1,53 | ± 12 | 2216 | Of 4.00 | 1,60 | ± 12 | ||
| Д470−50A | 4,70 | 1,54 | ± 10 | - | - | - | - | ||
| - | - | - | - | 2214 | 4,80 | 1,62 | ± 12 | ||
| - | - | - | - | 2212 | 5,00 | 1,60 | ± 12 | ||
| Д530−50A | 5,30 | 1,56 | ± 10 | - | - | - | - | ||
| - | - | - | - | 2211 | 5,50 | 1,56 | ± 12 | ||
| D600−50A | 6,00 | 1,57 | ± 10 | 2112 | 6,00 | 1,62 | ± 12 | ||
| D700−50A | 7,00 | 1,60 | ± 10 | 2111 | 7,00 | 1,60 | ± 10 | ||
| - | - | - | - | 2012 | 7,00 | 1,62 | ± 10 | ||
| D800−50A | 8,00 | 1,60 | ± 10 | 2011 | 8,00 | 1,60 | ± 10 | ||
| Д940−50A | 9,40 | 1,62 | ± 8 | - | - | - | - | ||
| Д310−65A | 0,65 | 3,10 | 1,49 | ± 15 | - | - | - | - | - |
| Д330−65A | 3,30 | 1,49 | ± 15 | - | - | - | - | ||
| Д350−65A | 3,50 | 1,49 | ± 10 | - | - | - | - | ||
| Д400−65A | Of 4.00 | 1.52 m | ± 14 | - | - | - | - | ||
| Д470−65A | 4,70 | 1,53 | ± 12 | - | - | - | - | ||
| Д530−65A | 5,30 | 1,54 | ± 12 | - | - | - | - | ||
| D600−65A | 6,00 | 1,58 | ± 10 | - | - | - | - | ||
| D700−65A | 7,00 | 1,57 | ± 10 | - | - | - | - | ||
| D800−65A | 8,00 | 1,60 | ± 10 | - | - | - | - | ||
| Д1000−65A | 10,00 | Of 1.61 | ± 10 | - | - | - | - | ||
| D600−100A | Of 1.00 | 6,00 | 1,53 | ± 10 | - | - | - | - | - |
| D700−100A | 7,00 | 1,54 | ± 8 | - | - | - | - | ||
| D800−100A | 8,00 | 1,56 | ± 8 | - | - | - | - | ||
| Д1000−100A | 10,00 | 1,58 | ± 8 | - | - | - | - | ||
| Д1300−100A | 13,00 | 1,60 | ± 8 | - | - | - | - | ||
Appendix E
(reference)
Compliance fine assortment of fully processed steel with high magnetic induction at the 54480 GOST R and GOST 21427.2
Table D. 1
| Steel grade according to GOST Р54480 | Nominal thickness, mm | Magnetic properties | Brand (symbol) became the graveyard 21427.2 | Nominal thickness, mm | Magnetic properties | ||||
| Specific magnetic losses P1,5/50, W/kg, not more | Magnetic inductionB2500, T, not less | Anisotropy of the specific magnetic потерьDP1,5/50, %, not more | Specific magnetic lossesP1,5/50, W/kg, not more | Magnetic inductionB2500, T, not less | Anisotropy of the specific magnetic потерьDP1,5/50, %, not more | ||||
| Д310−50AR | 0,50 | 3,10 | 1.55 V | ± 14 | - | 0,50 | - | - | - |
| Д330−50AR | 3,30 | 1.55 V | ± 14 | - | - | - | - | ||
| Д350−50AR | 3,50 | 1,59 | ± 12 | - | - | - | - | ||
| - | - | - | - | 2312 | 3,60 | 1,58 | ± 14 | ||
| Д400−50AR | Of 4.00 | Of 1.61 | ± 12 | - | - | - | - | ||
| Д450−50AR | 4,50 | 1,64 | ± 12 | 2215 | 4,50 | 1,64 | ± 12 | ||
| D500−50AR | 5,00 | 1,65 | ± 12 | 2213 | 5,00 | 1,65 | ± 12 | ||
| Д530−50AR | 5,30 | 1,62 | ± 10 | - | - | - | - | ||
| D600−50AR | 6,00 | 1,64 | ± 10 | - | - | - | - | ||
| - | - | - | 2013 | 6,50 | 1,65 | - | |||
| D700−50AR | 7,00 | 1,66 | ± 10 | - | - | - | - | ||
| D800−50AR | 8,00 | 1,66 | ± 10 | - | - | - | - | ||
| Д350−65АР | 0,65 | 3,50 | 1,57 | ± 12 | - | 0,65 | - | - | - |
| D700−65АР | 7,00 | 1,64 | ± 10 | - | - | - | - | ||
| D800−65АР | 8,00 | 1,66 | ± 10 | - | - | - | - | ||
