GOST 4752-2012

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  ГОСТ 4752-2012

GOST 4752−2012 copper cylinder Wire. Specifications

GOST 4752−2012

INTERSTATE STANDARD

COPPER CYLINDER WIRE

Specifications

Cylinder copper wire. Specifications

ISS 77.150.30

Date of introduction 2014−01−01

Preface

Goals, basic principles and main procedure of works on interstate standardization have been established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−2009 «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. Rules of development, adoption, application, renewal and cancellation"

Data on standard

1 PREPARED by the Federal state unitary enterprise «all-Russian research center of standardization, information and certification of raw materials, materials and substances» (FSUE «UNICEPS»)

2 as AMENDED by the Federal Agency for technical regulation and Metrology (Rosstandart)

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol of 3 December 2012 N 54-P)

The adoption voted:

4 by Order of the Federal Agency for technical regulation and Metrology dated November 20, 2012 N 962-St inter-state standard GOST 4752−2012 introduced as a national standard of the Russian Federation from January 1, 2014

5 this standard has been prepared on the basis of application of GOST R 53405−2009*
________________
* By order of the Federal Agency for technical regulation and Metrology dated November 20, 2012 N 962-St GOST R 53405−2009 abolished from 1 January 2014.

6 REPLACE GOST 4752−79

Information about the changes to this standard is published in the annual reference index «National standards», and the text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the 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 (www.gost.ru)

1 Scope

This standard applies to copper wire for the manufacture of cylinder bars according to GOST 3779.

2 Normative references

This standard uses the regulatory references to the following international standards:

GOST 427−75 Rulers measuring metal. Specifications

GOST 859−2014 Copper. Brand

GOST 2789−73 surface Roughness. Parameters and characteristics

GOST 2991−85 wooden disposable Boxes for loads up to 500 kg. General specifications

The Wire GOST 3282−74 General purpose low carbon steel. Specifications

GOST 3560−73 package steel Strip. Specifications

GOST 3779−55 cylinder copper Pillars

GOST 4381−87 Micrometers lever. General specifications

GOST 5244−79 wood Chips. Specifications

GOST 5530−2004 Tissue packaging and technical use of bast fibres. General specifications

GOST 6507−90 Micrometers. Specifications

GOST 8828−89 base Paper and paper double-layer waterproof packaging. Specifications

GOST 9569−2006 waxed Paper. Specifications

GOST 9717.3−82 Copper. Method of spectral analysis of oxide standard specimens

GOST 10446−80 (ISO 6892−84) Wire. Test method tensile

GOST 13938.11−2014 Copper. Method for the determination of arsenic

GOST 13938.13−93 Copper. Methods for determination of oxygen

GOST 14192−96 Marking of cargo

GOST 15846−2002 Products that are sent to the far North regions and equated areas. Packing, marking, transportation and storage

GOST 21140−88 Tara. System sizes

GOST 24047−80 Semi-finished products from nonferrous metals and their alloys. Sampling for tensile test

GOST 24231−80 non-ferrous metals and alloys. General requirements to selection and preparation of samples for chemical analysis

GOST 31382−2009 Copper. Methods of analysis

ST SEV 543−77 Number. Record rules and rounding

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 in the annual information index «National standards» published as on January 1 of the current year, and the editions of the monthly information index «National standards» for 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 wire: Prefabricated with a cross section of constant size, manufactured by rolling, pressing or drawing.

3.2 ovality (deviation from circular shape): Difference between the largest and smallest values of the diameters measured at one cross section perpendicular to the axis of the wire.

3.3 dent: Local deepening of various sizes and shapes with sloping edges.

3.4 shell: a Defect in the form of recesses on the surface of the rolled point or having an elongated shape and chaotic arrangement.

3.5 crack: a Defect of a surface, representing a rupture of the metal.

3.6 stratification: the discontinuity of metal, oriented along the direction of deformation.

3.7 risk: a Longitudinal recess or protrusion on the surface of products of different length in the warp direction.

3.8 nick: Local deepen with sharp edges.

4 Assortment

4.1 wire Diameter and tolerances for the wire diameter shall be as specified in table 1.


Table 1

4.2 Theoretical weight of 1 m of wire is given in Appendix A.

4.3 out-of-Roundness of the wire must not exceed half of the maximum deviations in diameter.

4.4 Wire produced in segments of length from 1500 to 2000 mm inclusive. It is possible to manufacture wire with a length of less than 1500 mm, but not less than 800 mm in the amount not exceeding 10% of the batch weight.

The legend is placed according to the scheme:

Use the following abbreviations:

Example of symbols drawn wire, round, solid, diameter 4.0 mm, random length, made of copper brand M0b:

Wire DKRT 4,0 ND M0b GOST 4752−2012

5 Technical requirements

5.1 Wire produced in accordance with the requirements of this standard according to the technical documentation of the manufacturer, duly approved.

Wire made from copper grade M0b according to GOST 859 with the chemical composition shown in table 2.


Table 2 — Chemical composition of copper grade M0b

5.2 Wire manufactures cold-drawn (stretched) in the solid state.

5.3 the surface of the wire must be smooth, clean, no prisoners, dross and cracks, free from contamination, hindering its inspection.

On the surface of the wire allowed slight traces of the technological lubricant, and also shell, risks, dents, traces of pulling, nicks and other surface defects not present in the control wire Stripping for limit deviation for diameter.

The total length of defective areas must not exceed 30 mm per 1 m length. Each defective area should be painted with indelible paint.

5.4 the roughness Parameter of the wire surface Ra (arithmetic mean deviation of the profile) should be no more than 0,63 mm according to GOST 2789.

5.5 Mechanical properties the wire shall conform to the requirements specified in table 3.


Table 3 — Mechanical properties of the wire

5.6 the Wire must withstand a test of homogeneity, rigidity and surface strength when crimping.

6 acceptance Rules

6.1 Wire take parties. The party should consist of wire of the same diameter, made of a single ingot or a part thereof, shall be furnished a document about quality that contains:

is the trademark or name and trademark of manufacturer;

— the name of the country of manufacture;

— legal address of the manufacturer and/or seller;

— designation of wire;

— test results and the annealing modes of columns (at the request of the consumer);

— the batch number;

the weight of the party.

The weight of the batch of wire shall be as defined in table 4.


Table 4 — Weight of the batch of wire

Allowed to supply 10% of the batches of wire with the following reduced masses:

— 13 kg — for a wire diameter of 4.0 mm;

— 22 kg — for wire diameter 5.0 mm;

— 35 kg — a wire of diameter 6.0 mm;

— 45 kg — for wire diameter of 8.0 and 10.0 mm.

6.2 Control of dimensions and surface quality is performed on each segment of wire in the party.

6.3 Control of mechanical properties carried out on two lengths of wire from the party.

6.4 Control the uniformity, stiffness, and surface strength when compression is carried out not less than 27 lengths of wire from the party.

6.5 Monitoring of the chemical composition in compliance with the requirements of 5.1 is carried out on one segment of the party.

The manufacturer allowed the chemical composition to be monitored on samples from the molten metal. For the determination of chemical composition sampling of molten metal is carried out from each melt or each casting.

6.6 If unsatisfactory test results of at least one of the figures specified in 6.2 to 6.5, it is carried out a re-test of the doubled sample taken from the same batch. The results of repeated tests spread to the entire party.

7 Methods of inspection and testing

7.1 the Quality of the wire surface check inspection without the use of magnifying devices.

Control of roughness of the wire surface is carried out by visual comparison of the quality of the wire surface samples surface roughness (samples comparison), certified by metrological service of the manufacturer.

7.2 Measurement of wire diameter on compliance and ovality 4.1 — 4.3 is carried out in two mutually perpendicular directions in any field not less than 15 mm from the cut ends of the wire lever with a micrometer according to GOST 4381 or other devices that provide the necessary measurement accuracy. Measurement of the lengths of wire for compliance with requirements 4.4 conduct with a ruler according to GOST 427 or other devices that provide the necessary measurement accuracy.

If there is disagreement on the definition of the diameter and cut lengths of wire measured with a micrometer according to GOST 4381, GOST 6507 and a ruler according to GOST 427.

7.3 To control the mechanical properties of each segment of the wire selected for testing, select one sample.

7.4 Test wire tensile (tensile strength) is carried out according to GOST 10446 on samples with an estimated length of 100 mm. Sampling is carried out according to GOST 24047.

7.5 For the test wire to the uniformity, stiffness and surface strength in the compression cylinder produce 80−120 pieces of columns of varying lengths of wire selected for testing, but no more than three from one segment. The size of the columns should correspond to GOST 3779. Test bars annealed cylinder for uniformity, surface strength — according to GOST 3779. When testing for homogeneity for wire diameters 6,0; 8,0 and 10,0 mm the permissible deviations of the columns of the average height must be less than the established GOST 3779 0.01 mm.

7.6 For chemical composition analysis at 6.5 from the selected cut wire cut one sample. Sampling for chemical composition analysis is carried out according to GOST 24231.

Chemical composition analysis is carried out according to GOST 31382, 13938.11 GOST and GOST 9717.3.

The oxygen content is determined according to GOST 13938.13.

Allowed to the manufacturer of the sampling carried out by the molten metal.

Allowed to carry out chemical analysis by other methods of equal precision specified. If there is disagreement in the assessment of the chemical composition analysis is carried out according to GOST 31382, GOST and GOST 13938.11 13938.13.

7.7 the results of the measurements are rounded according to the rounding rules established ST SEV 543.

8 Packing, marking, transportation and storage

8.1 Segments of wire must be Packed in bundles with matching length in the range of 40 mm.

8.2 Bundles of wire should be wrapped in waterproof paper GOST GOST 8828или 9569 or packing the fabric according to GOST 5530, or other material on regulations and bound with a steel wire of diameter not less than 3.0 mm according to GOST 3282 or steel tape not less than 0,3x16 mm according to GOST 3560 (binding: wire — stranding at least five turns of tape — in lock) and Packed in wooden boxes of types I, II-1, II-2, III-1 and III-2 according to GOST 2991 with a dense pad of wood chips according to GOST 5244 or paper waste. Dimensions of boxes — GOST 21140.

Weight of cargo must not exceed 80 kg.

Bundles of wire must be protected against corrosion, contamination and mechanical damage.

8.3 permitted to use other types of packaging materials not inferior in strength of the above, and other types and methods of packaging, ensure quality safety wire.

8.4 In each box or container must be attached to the packing slip, containing:

is the trademark or name and trademark of manufacturer;

— the name of the country of manufacture;

— designation of wire;

— the batch number;

— the net weight;

— gross mass;

— the number of the packer.

8.5 Transport marking under GOST 14192 with the application of manipulation sign «Protect from moisture».

8.6 Packaging of wire that is sent to the far North regions and equated areas according to GOST 15846 in the group «Metals and metal products."

8.7 Wire transporterowych all types of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this species.

8.8 Wire should be stored in covered premises. When storing and transporting the wire should be protected from mechanical damage, moisture and active chemical substances.

The consumer wire should be kept in stock in the manufacturer’s packaging for at least two days to equalize the temperature of the wire to the room temperature. After this period, the wire needs to be unpacked.

9 manufacturer’s Warranty

9.1 the Manufacturer guarantees compliance wire requirements of this standard if the consumer of rules of transportation and storage.

9.2 the Warranty period of storage of wire — 6 months from date of manufacture.

9.3 after the warranty period of storage of wire before use must be checked for compliance with the requirements of this standard and compliance can be used by the user to the destination.

Annex a (informative). Diameters, cross-sectional area and theoretical weight of 1 m of wire

Appendix A
(reference)

Table A. 1

The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
M.: STANDARTINFORM, 2015