GOST 5267.0-90

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  ГОСТ 5267.0-90

GOST 5267.0−90 hot-rolled Profiles for car building. General specifications

GOST 5267.0−90
Group B22

INTERSTATE STANDARD

HOT ROLLED PROFILES FOR CAR BUILDING

General specifications

Hot-rolled sections for car building. General specifications

OKP 09 2500, 3000 09

Date of introduction 1991−07−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of metallurgy of the USSR

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee on management of quality and standards from 25.06.90 N 1762

3. INSTEAD, GOST 5267.0−78

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

5. Limitation of actions taken by Protocol No. 7−95 Interstate Council for standardization, Metrology and certification (ICS 11−95)

6. REISSUE


This standard applies to hot-rolled shaped profiles, designed for car building.

It is possible to use profiles in other industries.

1. BASIC PARAMETERS AND DIMENSIONS

1.1. Assortment, dimensions, sectional area, weight of one meter, reference values, tolerances for dimensions, mass of one meter and the geometrical form of the profile should correspond to GOST 5267.1 — GOST 5267.13.

Note. The cross-sectional area and reference values calculated based on nominal sizes. The density of steel is taken equal to 7,85х10kg/m.

1.1.1. The dimensions and radii of the profiles, which does not have limit deviations, are provided by the tool and on the finished release is not controlled.

1.1.2. Blunting of the corners of the contours of the profile are not indicated on the drawings standards gauge: 0.3 mm thickness in the thickness profile of up to 10 mm; 3 mm thickness profile over 10 mm.

1.2. Profiles are produced in length from 3 to 13 m. At the request of the consumer profiles are produced with a length of over 13 m.

1.3. Depending on the purpose, the profiles are made:

the measured length;

multiple of gauging length;

measuring length with cuts in the amount of not more than 10% of the batch weight;

multiple lengths with cuts in the amount of not more than 10% of the batch weight.

Segments are sections with length not less than 2,0 m.

1.4. The profiles must be cut off. Cut end Squareness, mm should take the length of the profiles for the nominal size and tolerances for length.

The length of the profiles is the maximum length of conditionally-cut rod with the ends perpendicular to the longitudinal axis.

1.4.1. The length of the profiles and the accuracy of the cutting point in the order.

1.5. Maximum deviations along the length of the profiles and multiple dimensional measuring length should not exceed given in table.1.

Table 1

Note. Maximum deviations along the length of the profile according to GOST 5267.3 conventional precision cutting with a length of more than 12 to 15 m should not exceed plus 100 mm over 15 m — plus 120 mm.


Examples of symbols:

The N-channel 30V-1 according to GOST 5267.1 of steel grade category 4 according to GOST 535:

Channel.

The N-channel 30V-2 according to GOST 5267.1 of steel grade , category 2 according to GOST 6713:

Channel.

The N-channel 30V-2 according to GOST 5267.1-strength 325 of steel grade , category 2 according to GOST 19281:

Channel.

Profile N 8 according to GOST 5267.2 of steel grade , category 2 according to GOST 535:

Profile.

A profile according to GOST 5267.3 strength class 295 of steel grade , category 12 19281 churchyard:

Profile.

A profile according to GOST 5267.4 strength class 295, category 12 to GOST 19281:

Profile

I-beam N 19 according to GOST 5267.5 conventional precision manufacturing (s) of strength class 295 steel grade , the category 12 to GOST 19281:

The I-beam .

A profile according to GOST 5267.6 strength class 375 of steel grade , the category of 14 the churchyard 19281:

Profile .

A profile according to GOST 5267.7 strength class 295 steel , category 12 to GOST 19281:

Profile

A profile according to GOST 5267.8 of steel grade , the category of quality according to GOST 4543:

Profile '

A profile according to GOST 5267.9 of steel grade , the category of quality according to GOST 4543:

Profile .

A profile according to GOST 5267.13 of steel grade , category 2 according to GOST 535:

Profile .

2. TECHNICAL REQUIREMENTS

2.1. Profiles are produced in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.

2.2. Features

2.2.1. Profiles are produced from steel grades given in table.2.

Table 2

By agreement with consumer it is allowed manufacture of steel profiles from other brands.

Steel grade and category indicated in the order.

The category if not specified, determined by the manufacturer.

Profiles of low-alloy steel grades according to GOST 19281 produce with specified chemical composition.

2.2.2. Can be manufactured in sections from steel with a purge of argon, nitrogen or other inert gas, and subjected to treatment with synthetic slag.

2.2.3. The mechanical properties of the profiles according to GOST 5267.3, 5267.6 GOST, GOST 5267.7 of steel must conform to the standards given in table.3.

Table 3

2.2.4. On the surface of the rolled profiles are not allowed cracks, slivers, and sunsets, and on the edges of the bundle.

Remove defects shallow cutting or Stripping to a depth of not displaying the profile for the minimum allowable size. The width of the cutting or Stripping shall be not less than five times the depth.

The area of cut or Stripping shall not exceed 1.5% of the total area of the surface profile.

Brewing or sealing of surface defects is not permitted.

2.2.5. On the surface of the profiles allowed without Stripping (cutting) of the individual bubbles and rolled out the crust, contamination, flaw, prints, risks, and Rabina, not deducing the dimensions of the profile outside the tolerance. The height of the prints on the outer surface of the flanges of sections according to GOST and GOST 5267.3 5267.6 should be no more than 0.5 mm; on the surface elements of the profile according to GOST 5267.1, 5267.5 GOST, GOST 5267.6,GOST 5267.13 that do not have plus tolerances up to 1.5 mm.

2.2.6. At the ends of the nicks are allowed within half the actual admittance in length.

2.2.7. The burrs on the ends of the profiles are removed by agreement between manufacturer and consumer.

2.3. Marking of profiles according to GOST 7566 with the addition of:

color marking — GOST 380, GOST 6713 GOST 4543 and.

By agreement between manufacturer and consumer marking paint do not produce.

2.4. Packaging — according to GOST 7566.

3. ACCEPTANCE

3.1. Profiles accepted by the parties. The party must consist of one profilemaster profiles made of steel, one melting ladle; the party of profiles of steel with machines continuous casting is the difference in the mass fraction of carbon in the steel shall not exceed 0.04 percent and the mass fraction of manganese — 0.15 percent by ladle analysis.

3.1.1. The party of profiles of category 1 and 2 according to GOST 535 there can be multiple heats, the party should consist of profiles with a single profilemaster and one brand of steel. The mass of the party — no more carload norms.

3.1.2. The weight of the batch profiles of steel, obtained on machines continuous casting, should be no more than 250 tons

3.1.3. The party must be accompanied by a document of quality according to GOST 7566 with the addition of:

the category profiles;

method of processing steel in the ladle (with the processing).

if the party several heats number of heats in the party.

3.2. To check the quality of profiles taken from the party:

chemical composition — one sample from melting ladle;

for testing the tensile, bending and impact strength — the two profiles;

to check the surface quality and size — 5% of profiles from the party, but at least five pieces.

3.3. From each selected profile cut:

for tensile tests and cold bend — one sample;

for testing the impact strength — two samples for each temperature.

3.4. If unsatisfactory test results of at least one of the indicators for him to repeat the test at twice the number of samples. The results of repeated tests apply to the entire party.

4. CONTROL METHODS

4.1. Sampling for chemical analysis is carried out according to GOST 7565.

4.2. The chemical composition of the steel determined by ladle analysis plavonia samples according to GOST 12344 — GOST 12348, 12350 GOST — GOST 12352, 12355 GOST — GOST 12359, 12361 GOST, GOST 17745, GOST 18895, GOST 22536.0 to GOST 22536.12, GOST 27809, GOST 28473 or other methods providing the required accuracy of the analysis.

4.3. Sampling for mechanical and technological tests carried out according to GOST 7564.

The profiles according to GOST 5267.3, GOST and GOST 5267.6 5267.7 sampling for mechanical and technological tests carried out from the shelves. In addition, for testing the impact strength of the profile z for sill sample taken from the shelves with a thickness of 13 mm.

The axis of the sample taken from the profile according to GOST 5267.6, is at a distance of 20 mm from the edge of the shelf.

4.4. The tensile test is carried out according to GOST 1497.

4.5. Impact strength testing is carried out according to GOST 9454 on samples of type 1 or 3.

In case of positive test results of impact strength at a temperature of minus 60 °C impact strength at minus 40 °C not determined.

May reduce impact toughness on a single sample by 30%. The average value of test results should be not below the established norms.

4.6. Determination of tendency to mechanical aging is carried out according to GOST 7268.

4.7. The bend test is carried out according to GOST 14019.

4.8. Form, the geometrical dimensions of the profiles and surface defects control by means of measuring instruments according to the GOST 162, 166 GOST, GOST 427, GOST 3749, 5378 GOST, GOST 6507, GOST 7502, THE 2−034−225−87 or instruments, certified according to GOST 8.326* and GOST 2216.
________________
* On the territory of the Russian Federation there are PR 50.2.009−94.


Allowed to use other means of measurements with metrological characteristics and equipment with technical characteristics as given in these standards.

4.9. Control the size and the shape deviations of the profiles according to GOST 5267.3, GOST 5267.6,5267.7 GOST, GOST and GOST 5267.12 5267.13 is carried out at a minimum distance of 200 mm from the ends, according to GOST 5267.1, 5267.2 GOST, GOST 5267.4, 5267.5 GOST, GOST 5267.8 — GOST 5267.11 — at a distance of not less than 500 mm from the ends.

4.10. The wall thickness of the profiles according to GOST 5267.1 — 5267.7 GOST, GOST 5267.11, GOST 5267.13 and flange thickness according to GOST 5267.2 measure the ends. Control of the thickness of the flanges of channels according to GOST 5267.1 and the I-beam GOST 5267.5 performed according to the calibers of the rolls when they are boring.

4.11. The height profiles according to GOST 5267.1 — 5267.3 GOST, GOST and GOST 5267.5 5267.11 measured in the plane of the wall.

4.12. The surface quality of the profiles and the ends checked by visual inspection without the use of magnifying devices.

4.13. Depth of surface defects is determined by the control sweep or nagrobki.

Allowed to use non-destructive methods of control.

Stratification is controlled by the inspection of the edges. If necessary, the quality of the metal on the edges of the check a removal of chips, wherein the chip splitting is a sign of a defect of the metal.

4.14. Control extreme deviations by the weight of 1 m of the profile is carried out by weighing the rolled weighing 20−60 tons of the amount of 400−500 tons or weighing segment profile length of at least 300 mm, selected using each of 100 bars.

4.15. Under the control of the mechanical properties of the profiles allowed to apply statistical methods of nondestructive control according to normative-technical documents on control methods of steel products, agreed with the consumer.

5. TRANSPORTATION AND STORAGE

5.1. Transportation and storage is carried out in accordance with GOST 7566.