GOST 1051-73
GOST 1051−73 rental calibrated. General specifications (with Amendments No. 1, 2, 3)
GOST 1051−73
Group В32
INTERSTATE STANDARD
ROLLED CALIBRATED
General specifications
Gauged bars. General specifications
ISS 77.140.60
GST 11 4100 0100
Date of introduction 1975−01−01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of ferrous metallurgy of the USSR
2. APPROVED AND promulgated by the Decree of the State Committee of standards of the Council of Ministers of the USSR dated
3. REPLACE GOST 1051−59 in part of sec. 1 (surface quality) and sec. 2 and 3
4. Standard uniform with OBD 11627−73
5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS
| The designation of the reference document referenced |
Item number |
||
| GOST 9.014−78 |
5.2 | ||
| GOST 1050−88 |
2.3 | ||
| GOST 1414−75 |
2.3 | ||
| GOST 1435−99 |
2.3 | ||
| GOST 2789−73 |
2.2, 4.3 | ||
| GOST 4543−71 |
2.3 | ||
| GOST 5949−75 |
2.3 | ||
| GOST 5950−2000 |
2.3 | ||
| GOST 7417−75 |
1.1; 1.2 | ||
| GOST 7566−94 |
3.1; 3.2; 3.4; 5.1; 5.1.2 | ||
| GOST 8559−75 |
1.1; 1.2 | ||
| GOST 8560−78 |
1.1; 1.2 | ||
| GOST 9012−59 |
4.5 | ||
| GOST 10243−75 |
4.6 | ||
| GOST 14959−79 |
2.3 | ||
| GOST 19265−73 |
2.3 | ||
| GOST 20072−74 |
2.3 | ||
| GOST 21650−76 |
5.1.2 | ||
| GOST 24597−81 |
5.1.2 |
6. Limitation of actions taken by Protocol No. 5−94 of the Interstate Council for standardization, Metrology and certification (ICS 11−12−94)
7. EDITION (August 2004) with Changes No. 1, 2, 3, approved in April 1977 and December 1985, December 1989 (IUS 5−77, 3 to 86, 2−90)
This standard applies to calibrated rolled round, square and hexagonal steel: carbon and alloy structural quality; spring; high and high machinability; carbon, alloy and high speed tool; heat resistant; corrosion-resistant, heatresistant and heat-proof.
(Changed edition, Rev. N 3).
1. ASSORTMENT
1.1. Assortment of the rental must comply with GOST 7417, GOST and GOST 8559 8560.
1.2. The ends of the rods need to be trimmed.
Burrs and bends, displaying bars for the nominal dimensions for the cross section are not permitted.
Cut end Squareness, mm must meet the requirements of GOST 7417, 8559 GOST, GOST 8560.
When cutting with shears allowed the collapse of one cut end while maintaining the size of the second dragged the end. Dragged at the end of the allowed bands. By agreement with the consumer allowed the collapse of both trimmed ends. The magnitude of the collapse of all should take the cross-sectional dimensions of bars for a nominal amount.
The length of the shear bar end should not exceed the limits specified in table.1.
Table 1
| The size of the rods, mm |
Length of crumpled ends, mm, not more | |||
| To | 25 | 20 | ||
| SV. | 25 | to | 50 |
25 |
| SV. | 50 | to | 70 |
30 |
For bars, cut with shears, and allowed the burrs, the value of which is established by agreement between manufacturer and consumer.
At customer’s request bars are manufactured with a chamfer on one end, by agreement between manufacturer and consumer is chamfered at both ends.
If necessary, the chamfer dimensions are established by agreement between manufacturer and consumer.
Examples of symbols
Rolled round with a diameter of 8 mm, class h12 according to GOST 7417, quality carbon structural steel, grade 45, with surface quality group B, full hard — N:
Rental square, with a side of a square 15 mm, tolerance h11 GOST 8559, alloy structural steel grade 20X, with surface quality group b, heat-treated — T:
Rental hexagon, inscribed circle diameter 8 mm, class h10 according to GOST 8560, structural steel of heightened and high machinability brand AS14, with surface quality group b, full hard — N:
1.1, 1.2. (Changed edition, Rev. N 3).
2. TECHNICAL REQUIREMENTS
2.1. Grooved Bicycle manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.
(Added, Rev. N 2, 3).
2.1. In accordance with the order steel manufactures cold-worked — N or in the heat-treated — T (annealed, vysokoopasnye normalized to a vacation, quenched with vacation, quenched).
(Changed edition, Rev. N 1).
2.2. The surface of the calibrated hire must be clean, smooth, light or frosted, without cracks, shells, sunsets and scale and, depending on the surface quality, divided into groups specified in the table.
Group surface quality and the quality stipulate in the order.
On the surface of the helical rentals allowed traces of the straightening and drawing, resulting in the production process and does not violate the integrity of the metal if the depth does not exceed the standards table.2 set for surface defects.
Table 2
| Group surface quality |
Kvalitet |
Permissible surface defects |
The greatest depth of defect |
| And |
h9 | Some minor risks are of mechanical origin |
Is established by agreement between manufacturer and consumer |
| h10 |
| ||
| B |
h10, h11, h12 |
Some minor risks are of mechanical origin, the remnants of dross, prints, rabiza, gentle sweeps, the traces from cleaning with an abrasive |
Limit deviations |
| In |
h10, h11 |
Some minor risks are of mechanical origin, the remnants of dross, prints, rabiza, gentle sweeps, the traces from cleaning with an abrasive individual small rolled and uninhibited bubbles and pollution (volosovichi) |
Limit deviations |
| h12 | Some minor risks are of mechanical origin, the remnants of dross, prints, rabiza, gentle sweeps, traces of Stripping abrasive. |
Limit deviations for quality h12 | |
| In addition, a separate small uninhibited and rolled out the bubbles and impurities (volosovichi) |
Limit deviations for quality h11 |
Notes:
1. The depth of the defects counting from the actual size.
2. On the surface of the heat treated steel allowed the oxide film.
3. Allowed the specification of surface characteristics on agreed standards, indicating the type and number of defects per unit area.
4. According to customer’s requirement steel produce:
a) group A and B with a normalized surface roughness for not more than 20 µm reference length of 2.5 mm by
2.5 mm with sampling length of 0.8 mm and
not more than 1.25 mm with sampling length of 0.8 mm according to GOST 2789;
b) group B and with the greatest depth of defect is not more than half of the limit deviations for h10 and h11.
5. Be performed removal of defects by grinding.
6. Calibrated rental kvalitet h9 are made by agreement between manufacturer and consumer.
2.1; 2.2. (Changed edition, Rev. N 1, 2, 3).
2.3. Chemical composition, macrostructure and hardness of hire you must sootvetstvovat 1050, GOST 1414, GOST 1435, GOST 4543, GOST 5949, 5950 GOST, GOST 14959, GOST 19265 and GOST 20072.
Note. Norms of hardness of heat treated (normalized, normalized with the release, tempered with the release, hardened) calibrated rolled, if they are not regulated by the standards established by agreement between manufacturer and consumer.
2.4. (Deleted, Rev. N 3).
3. ACCEPTANCE RULES
3.1. General rules of acceptance GOST 7566.
3.2. Calibrated rental take parties composed of steel of the same brand, same bottoms, same size, one group of surface quality and of the same kind of treatment. Each batch is accompanied by a quality document with GOST 7566.
Note. By agreement with the consumer, the party may enter bars or coils of one brand of several heats of steel.
(Changed edition, Rev. N 2, 3).
3.3. To check the quality of hire from the party of bars or coils selected sample in accordance with the standards of the appropriate grade of steel listed in clause 2.3, with the following addition:
to control the hardness and roughness of three bar or coil, if the standards listed in clause 2.3 not specified greater amount.
(Changed edition, Rev. N 3).
3.4. If unsatisfactory test results on at least one of indicators on it, repeat tests are carried out according to GOST 7566. The results of repeated tests apply to the entire party.
(Added, Rev. N 2).
4. TEST METHODS
4.1. Control methods must meet the standards for the relevant grade of steel listed in clause 2.3.
The chemical composition of the calibrated hire is allowed to determine and to carry it from the document about the quality of hot-rolled steel.
(Changed edition, Rev. N 2).
4.2. From each selected for control bar or coil select the number of samples in accordance with the standards of the appropriate grade of steel listed in clause 2.3.
(Added, Rev. N 2).
4.2. Check the surface quality of the rolled carried out by NDT methods or inspection without the use of magnifying devices. If necessary, apply the bleaching the surface with a file or abrasive wheel. Depth of surface defects is determined by the control sweep.
(Changed edition, Rev. N 3).
4.3. The parameters of surface roughness is determined according to GOST 2789.
(Changed edition, Rev. N 1).
4.4. The dimensions of the rolled section check: not less than 25 cm from the end — bars in random lengths or coils;
not less than the actual allowance for length — for bars exact or multiple lengths.
The shape and size of the rental check of the measuring instrument corresponding accuracy.
(Changed edition, Rev. N 3).
4.5. The hardness of the rental is determined according to GOST 9012.
4.6. Control of macrostructure is carried out according to GOST 10243.
Allowed to disseminate the results of the tests of rental, held control of the macrostructure of large hot rolled profiles, rolled on a calibrated Bicycle.
4.5, 4.6. (Changed edition, Rev. N 3).
5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE
5.1. Marking, packaging, transportation and storage — by GOST 7566 with additions.
(Changed edition, Rev. N 2).
5.1.1. Marking labels are firmly attached to the studs with hand, convenient for viewing, or placed in a special pocket. It is allowed to attach one label on the end of the rod by the end of the ligament.
5.1.2. Transportation of products is carried out by all kinds of transport in accordance with cargo carriage regulations applicable to transport of this species.
The uld (linkage stack) — according to GOST 7566.
When sending to a single address two or more parcels, the dimensions of which allow you to arrange transport package with dimensions according to GOST 24597, the package needs to be formed into transport packets according to GOST 21650.
5.1.1,
5.2. Steel products, except corrosion resistant, must be covered with grease, protecting it from corrosion.
By agreement of the parties allowed to establish the composition of used lubricants and coatings, as well as to supply products without lubrication.
At the request of the customer it can be preserved in accordance with the requirements of GOST 9.014.
