GOST 14637-89
(ISO 4995-78)

Interstate standard

Tolstolic rolling
From carbon steel
Ordinary quality

Technical conditions

Date of administration 01.01.91

This standard applies to a thick-rolled rolled rolled carbon steel of ordinary quality, made with a width of 500 mm and more, thick from 4 to 160 mm inclusive.

1. Main parameters

4 - 160 mm - sheets;

4 - 12 mm - rolls.

In terms of other requirements for the sorting of the rental of GOST 19903.

1.4. Examples of conventional designations are shown in the application.

2. Technical requirements

2.1. Characteristics

2.1.2. For rental up to 10 mm thick inclusive of steel stamps ST3CP, ST3PS, ST3SP is allowed to reduce the lower limit of the mass fraction of one of the elements - carbon by 0.04% abs., Manganese by 0.1% ABS. - When providing mechanical properties installed for these steel grades.

At the request of the consumer, the mass fraction of acid-soluble aluminum in the category 2 of category 2 with a thickness of up to 5 mm made of steel stamp stamp, stretched aluminum, should be at least 0.02%.

The mass fraction of silicon in the holder of categories 2 - 6 with a thickness of up to 8 mm inclusive, made of steel stamps ST2PS and ST3PS, spoken by silicon deoxidizers, is allowed less than 0.05% subject to the rest of the norms and requirements for the rental.

(Modified edition, change No. 1).

2.1.3. At the request of the consumer, the mass fraction of sulfur in the holder of categories 1 - 5 of steel of all grades, except for ST0, should not exceed 0.040%, phosphorus - 0.030%; In a category 6, the mass fraction of each of these elements should not exceed 0.025%.

2.1.4. In the box office intended for welded structures, the mass fraction of carbon should not exceed 0.22% (SV).

To ensure the required rental properties of all categories, heat treatment may be used.

It is allowed to manufacture a rental of categories 1 - 5 in a strengthened with a rolling heat heating or after controlled rolling.

Table 1

table 2

2.1.7.3. A decrease in relative elongation per 1% ABS is allowed. For rolled out a thickness of more than 8 mm and for each millimeter reduction of thickness for rolling with a thickness of 8 mm and less.

2.1.8. KCU shock viscosity norms Hot rolled rolled products 3 - 5 must correspond to the table. .

Table 3.

2.1.9. The mechanical properties of hardened rolled products during tensile tests, bending to parallelism of the parties and the rate of shock viscosity KCU should correspond to the table below. .

Table 4.

2.1.5 – 2.1.9 (Modified edition, change No. 1).

2.1.10. KCV shock viscosity norms Rental categories 5 and 6 must correspond to the table below. .

Table 5.

Rolled sample size

hot-rolled and hardened (except heat-treated)

heat-treated

Sheet

Two sheets

One sheet (from the middle cage)

Roll

One roll

Note . For sheets obtained by a sharp roll, one sheet is selected.

GOST 14637-89
(ISO 4995-78)

Interstate standard

Tolstolic rolling
From carbon steel
Ordinary quality

Technical conditions

Date of administration 01.01.91

This standard applies to a thick-rolled rolled rolled carbon steel of ordinary quality, made with a width of 500 mm and more, thick from 4 to 160 mm inclusive.

1. Main parameters

4 - 160 mm - sheets;

4 - 12 mm - rolls.

In terms of other requirements for the sorting of the rental of GOST 19903.

1.4. Examples of conventional designations are shown in the application.

2. Technical requirements

2.1. Characteristics

2.1.2. For rental up to 10 mm thick inclusive of steel stamps ST3CP, ST3PS, ST3SP is allowed to reduce the lower limit of the mass fraction of one of the elements - carbon by 0.04% abs., Manganese by 0.1% ABS. - When providing mechanical properties installed for these steel grades.

At the request of the consumer, the mass fraction of acid-soluble aluminum in the category 2 of category 2 with a thickness of up to 5 mm made of steel stamp stamp, stretched aluminum, should be at least 0.02%.

The mass fraction of silicon in the holder of categories 2 - 6 with a thickness of up to 8 mm inclusive, made of steel stamps ST2PS and ST3PS, spoken by silicon deoxidizers, is allowed less than 0.05% subject to the rest of the norms and requirements for the rental.

(Modified edition, change No. 1).

2.1.3. At the request of the consumer, the mass fraction of sulfur in the holder of categories 1 - 5 of steel of all grades, except for ST0, should not exceed 0.040%, phosphorus - 0.030%; In a category 6, the mass fraction of each of these elements should not exceed 0.025%.

2.1.4. In the box office intended for welded structures, the mass fraction of carbon should not exceed 0.22% (SV).

To ensure the required rental properties of all categories, heat treatment may be used.

It is allowed to manufacture a rental of categories 1 - 5 in a strengthened with a rolling heat heating or after controlled rolling.

Table 1

table 2

2.1.7.3. A decrease in relative elongation per 1% ABS is allowed. For rolled out a thickness of more than 8 mm and for each millimeter reduction of thickness for rolling with a thickness of 8 mm and less.

2.1.8. KCU shock viscosity norms Hot rolled rolled products 3 - 5 must correspond to the table. .

Table 3.

2.1.9. The mechanical properties of hardened rolled products during tensile tests, bending to parallelism of the parties and the rate of shock viscosity KCU should correspond to the table below. .

Table 4.

2.1.5 – 2.1.9 (Modified edition, change No. 1).

2.1.10. KCV shock viscosity norms Rental categories 5 and 6 must correspond to the table below. .

Table 5.

Rolled sample size

hot-rolled and hardened (except heat-treated)

heat-treated

Sheet

Two sheets

One sheet (from the middle cage)

Roll

One roll

Note . For sheets obtained by a sharp roll, one sheet is selected.

GOST 14637-89 (ISO 4995-78)

Interstate standard

Tolstolic rolling

From carbon steel ordinary quality

Technical conditions

Official edition

Standinform

Interstate standard

Tolstolic carbon steel rolled steel

Technical conditions

ROLLED PLATE FROM CARBON STEEL OF GENERAL QUALITY. Specifications.

(ISO 4995-78)

MKC 77.140.50 OKP 09 7100

Date of introduction 01.01.91

This standard applies to thick-rolled hot-rolled carbon steel rolled steel, made with a width of 500 mm and more, with a thickness of 4 to 160 mm.

1. Main parameters

1.1. The rental is made in the form of sheets and rolls made of steel stamps ST2CP, ST2PS, STSP, STZKP, STZPS, STZSP, STZGPS, STZGSP, ST4PS, ST4PS, ST5PS, ST5SP, ST5GPS according to GOST 380.

1.2. Depending on the normalized characteristics, the rental is divided into categories: 1, 2, 3, 4, 5, 6. To designate the category, the category number is added to the designation of the brand, for example:

STZPS 1, ST4PZ.

1.3. Rental manufactured with thickness:

4-160 mm - sheets;

4-12 mm - rolls.

In terms of other requirements for the sorting of the rental of GOST 19903.

1.4. Examples of conventional designations are shown in the application.

2. Technical requirements

2.1. Characteristics

2.1.1. Rental is made of steel with chemical composition, corresponding to GOST 380. Limit deviations for chemical composition in the finished rental from the smelting analysis

the bucket sample should not exceed the allowable GOST 380.

2.1.2. For rental thick up to 10 mm included. From steel grades STIs, STZPS, STZSP is allowed to reduce the lower limit of the mass fraction of one of the elements - carbon by 0.04% abs., manganese is 0.1% abs. When providing mechanical properties installed for these steel grades.

At the request of the consumer, the mass fraction of acid-soluble aluminum in the standard of category 2 with a thickness of up to 5 mm made of steel grades, stretched aluminum, should be at least 0.02%.

Mass fraction of silicon in the holder of categories 2-6 with a thickness of up to 8 mm included. Made from steel stamps ST2PS and STZPS, deoxidized silicon-containing deoxidizers, is allowed less than 0.05% subject to other standards and rental requirements.

2.1.3. At the request of the consumer, the mass fraction of sulfur in the holder of categories 1-5 of steel of all brands, except a hundred, should not exceed 0.040%, phosphorus - 0.030%; In a category 6, the mass fraction of each of these elements should not exceed 0.025%.

2.1.4. In the box office intended for welded structures, the mass fraction of carbon should not exceed 0.22% (SV).

(Amendment).

Reprint is prohibited

© Standards Publishing House, 1990 © Standinform, 2009

Edition Official ★

Table 1

Notes:

1. The sign "+" means that the characteristic is normal, the sign "-" - do not normal.

2. For rolled from steel brands, the yield strength and shock viscosity are not normalized.

3. Hire of categories 2 and 3 made of steel brands of STZPS and STZSP thick 5 mm thick and more, in addition to rolled products, designed to redo pipes, manufactured by the manufacturer's coordination with the consumer.

4. For the rental category 5, intended for redo pipes, KCU is normalized at a temperature of minus 20 ° C and one of the other two shock viscosity indicators: KCU after mechanical aging or KCV at a temperature plus 20 ° C.

To ensure the required rental properties of all categories, heat treatment may be used.

It is allowed to produce the rental of categories 1-5 in a strengthened steel or after controlled rolling.

2.1.7. The mechanical properties of hot rolled rolled products when tensile testing and bend must comply with the standards shown in Table. 2.

Table 2

2.1.7l. It is allowed to exceed the upper limit of the time resistance by no more than 50 N / mm 2 (5 kgf / mm 2) compared to those shown in Table. 2, subject to the rest of the norms, and in coordination of the manufacturer with the consumer - without limiting the upper limit.

2.1.7.2. In coordination of the manufacturer with the consumer, the value of the flow rate of the thickness of more than 20 mm is allowed by 10 N / mm 2 (1 kgf / mm 2) below compared to those shown in Table. 2.

2.1.7.3. A decrease in relative elongation per 1% ABS is allowed. For rolled out a thickness of more than 8 mm and for each millimeter reduction of thickness for rolling with a thickness of 8 mm and less.

2.1.8. The drum velocity of the KCU of the hot rolled rolled product categories 3-5 must correspond to the table below. 3.

Table 3.

P romething. According to the consumer coordination with the manufacturer of the drum rate, set for a thickness of 4-9 mm corresponding to the values \u200b\u200bfor a thickness of 5-9 mm.

2.1.9. The mechanical properties of hardened rolled products during tensile tests, bending to parallelism of the parties and the rate of shock viscosity KCU should correspond to the table below. four.

Table 4.

Note. For rental categories 1 and 2, the shock viscosity is not normalized.

2.1.5-2.1.9. (Modified edition, change No. 1).

2.1.10. KCV KCV Rental Rental Rental Norms 5 and 6 must match

shown in table. five.

2.1.11. Rental of steel brands Category 3 Category 3 are manufactured by coordinating the manufacturer with the consumer, while the rate of shock viscosity with plus 20 ° C is taken according to Table. 3 for steel brands STZPS and STZSP.

2.1.12. There should be no ribbon on the surface of the rental, end-to-end gaps, rolled prigar and crusts, as well as bubbles-swirling, harmonica, cracks, captivity, pollution and rolled scale. Defects (risks, risks and other local defects) are allowed, which are not withdrawn for limiting dimensions.

Table 5.

Note. The standards of the shock viscosity of rolling with a thickness of more than 20 mm are set from 01.01.94. Defining values \u200b\u200bThe manufacturer conducts on each 20th batch for a set of statistical data.

2.1.13. Eliminating surface defects for rolling of all thickness produced on thick-walled mills are cleaned. Strivered plots of rolled steel with a thickness of more than 10 mm brewed.

Cleansing produce abrasive tools or methods that do not cause changes in the properties of rolling.

At the request of the consumer, welding of defects is not allowed.

2.1.14. When removing the defects of the surface of the rental surface, the thickness is allowed to reduce the thickness of no more than 5% nominal in excess of minus limit deviation, but not more than 3 mm, while the area of \u200b\u200ba separate stripped area of \u200b\u200bthe rolled surface should not be more than 100 cm 2, the total area of \u200b\u200ball strongest areas on one sheet - No more than 2% of its area.

2.1.15. While coincides on both sides of the rolled, the allowable stripping depth is determined as the sum of the depth of stripping on each side of the rolled, which does not exceed the limit deviation in thickness.

2.1.16. The surface of the stripped area, not intended for the welding, should not have sharp edges.

2.1.17. At the request of the consumer, stripping defects to a depth, withdrawn the thickness of rolling for the limit dimensions, is not allowed.

2.1.18. The depth of stripping under the welding of rolling thickness up to 120 mm should not exceed 25% of the actual thickness, the rolled large thickness is not more than 30 mm.

2.1.19. The deposited zone must overlap the expanded area at least 5 mm along the contour and after stripping, do not remove the thickness of the rolling for the limit dimensions.

The area of \u200b\u200ba separate brewed area of \u200b\u200bthe rolled surface should not be more than 25 cm 2, the total area on one sheet is not more than 1% of its area.

2.1.20. On the cropped edges of the rolled, there should be no bundles, cracks and Rvannin, as well as displays for limit sizes in width and length:

Volosovine and voltage cracks of a depth of more than 2 mm and more than 25 mm long;

Zzbinin depth of more than 2 mm for rolling thickness up to 20 mm and 3 mm - rolled large thicknesses.

On the edges of the rolled, there should be no burrs a height of more than 2 mm.

2.1.21. Crumpled and bending edges after trimming should not remove the rental for limit deviations from flatness according to GOST 19903.

2.1.22. On the compressed edges there should be no bundles, ribs, cracks, bubbles-swirling, captivity, pollution, rolled scale, hairovine and risks, withdrawing rental for limit sizes in width.

2.1.23. The depth of defects on the uncircumcised edge of the sheet or roll should not exceed half the limit deviation in width and not output the width of rolling for the nominal size.

2.1.24. The slot rate norms are in accordance with classes 01, 2 and 3 according to GOST 22727.

The control of the cloth zone is carried out at the request of the consumer.

2.1.25. At the request of the consumer, the surface of the rolled should be cleaned from scale and lubricated neutral oil or other neutral preservative material.

2.1.26. Rental in rolls should not have:

Lowered by more than 90 ° side edges;

Twisted and crumpled ends;

The ends of the incomplete width in length exceeding the width.

At the request of the consumer, the ends of the incomplete width must be cropped.

2.1.27. The manufacture of composite rolls intended for the manufacture of pipes, including welding parts, is not allowed.

2.2. Rent marking - according to GOST 7566 with the following addition.

When marking, the conditional number of the steel brand is applied (without the letters ST).

Rolled marking color, with the exception of category 6, - in accordance with GOST 380, category 6 - red with yellow.

2.2.1. Transport markings - according to GOST 14192.

2.3. Packaging of rolled - according to GOST 7566.

2.3.1. Packaging for rental for the regions of the Far North and equivalent locality - according to GOST 15846.

3. Acceptance

3.1. Rental acceptance - according to GOST 7566 with the following additions.

Rental accepted by parties. The rental party made of slabs obtained on machines of continuous casting of blanks should consist of a rolled one brand of steel, one thickness, one thermal or hardening mode; The rolled batch from the ingots, in addition, is from one smelting-bucket.

The size of the rolled batch from the slabs obtained on the machines of continuous casting of the blanks by the "smelting on melting" method should not exceed 350 tons, and from slabs obtained by individual melts - melting mass.

The rental party, in addition to the rental of steel brands, should consist of one melting sheets and rolls.

For the rental of steel brands, the number of melting in the party is not limited.

(Modified edition, change. No. 1, amendment).

3.2. Each batch is accompanied by a document on GOST 7566 with an additional indication:

Type and mode of processing - thermal or hardening (when conducting);

Accuracy of rolling - in thickness, flatness, sickle;

The nature of the edge;

Surface quality, including the presence of correction of surface defects with welding;

Results of non-destructive continuity control;

Results of testing tests on samples with a concentrator of V. type

3.3. To check the chemical composition of the finished rental size of the sample - according to GOST 7565.

3.4. Control of the chemical composition of finished rental at the manufacturer is allowed not to be carried out when providing established norms on the results of the analysis of the bucket sample.

3.5. The size of the sample to check the quality by PI. 2.1.7-2.1.11 must be suitable. 6.

3.6. It is allowed in coordinating the manufacturer with the consumer to the manufacturer, determination of the shock viscosity on samples with a concentrator of the V form V conduit periodically on each 20th batch.

3.7. Quality control of the surface is carried out on all sheets and ruls of the party.

To control the sizes, 10% is selected from the party, but not less than 5 pcs. Sheets, rolls - not less than 2 pcs.

3.8. In coordination of the manufacturer with the consumer, control of rolled steel continuity. The control is carried out on all sheets of the party or selectively. In selective control, the size of the sample - 10% of the sheets, but not less than 5 pcs.

The continuity of rolling in rolls, as well as sheets obtained by a sharp roll, do not control.

3.9. Upon receipt of unsatisfactory test results, at least one indicator, the re-test is carried out on the sample, selected in accordance with GOST 7566.

Upon receipt of unsatisfactory results, during periodic tests, they are transferred to acceptance to receiving positive results on three parties in a row.

Results of repeated tests are distributed to the entire batch.

Table 6.

Note. For sheets obtained by a sharp roll, one sheet is selected.

Upon receipt of unsatisfactory test results in selective ultrasound control, the manufacturer tests on each party sheet.

4. Test methods

4.1. To verify the chemical composition of the sample, select GOST 7565.

Chemical analysis is carried out according to GOST 22536.0-GOST 22536.11, GOST 27809, GOST 17745 or other methods that ensure the necessary analysis accuracy.

If disagreements occur, the methods established by this Standard are used.

4.2. For mechanical and technological tests from a rolled unit (PP. 3.5 and 3.6), samples are taken according to GOST 7564:

One sample - for tensile tests;

Three samples - for testing for impact bending with a concentrator of the type U;

Three samples - for testing for impact bending with a concentrator of the type V;

One sample - for bending test.

Samples for testing sheets and rolls, in addition to samples for testing for impact bending types 11 and 13, cut across the direction of rolling, samples for testing tests of types 11 and 13 - along the rolling direction.

In the manufacture of samples for testing for impact bending, one of the sample faces corresponding to the surface of the rolling is left untreated.

4.3. Testing tests are carried out according to GOST 1497.

4.4. Impact bending tests are carried out according to GOST 9454.

For rolled 4-9 mm thick - on samples of type 3 or 13, a thickness of 10 mm and more - type I or II. For rolled 4-10 mm thick, made with deviation for minus tolerance, shock viscosity is determined on samples with a thickness equal to the thickness of the rolled.

4.5. Impact bending tests after mechanical aging are carried out according to GOST 7268.

4.6. Bending test is carried out according to GOST 14019.

4.7. When testing the hire on the impact bending, it is not allowed to reduce the values \u200b\u200bof the shock viscosity on one sample by more than 30%, while the average value should be not lower than the established norms.

4.8. It is allowed to use non-destructive, including statistical methods for controlling the rental when ensuring accuracy and reliability not lower than those achieved by the methods provided for by this standard.

In case of disagreements in assessing the quality of rolled and at periodic tests, control methods provided for in this standard are used.

(Modified edition, change No. 1).

4.9. Control of solidness of sheets - according to GOST 22727.

Scan type (solid or discrete linear) sets the manufacturer.

The depth of the caplaid zone during the control of the maximum permissible length of unbleased should be at least 50 mm.

4.10. The quality of the rolled surface is monitored visually without the use of magnifying devices. The bundle control the inspection of the edges.

4.11. Universal or special measuring instruments and tools are used to monitor linear size of rolled products and tools.

Special measurement tools - calibers and patterns - must be certified in the prescribed manner.

The accuracy of the measurement tools used should provide reproduction of the size and limit deviations of the rolled products established by GOST 19903, and in terms of measurement of defects - this standard.

Deviations of the shape of rolling are controlled according to GOST 26877.

5. Transportation and storage

5.1. Transportation and storage must comply with the requirements of GOST 7566 with the following addition.

When shipping more than two cargo places to one consumer, cargo places should be enlarged in accordance with the requirements of GOST 26663.

ATTACHMENT

Mandatory

Examples of conditional designations of rolled conventional design scheme

X- X - X GOST 19903-74

Rental view Precision Thickness accuracy by flatness The character of the edge of the size of the rolled

X X GOST 14637-89

steel grade

Note. The parameters and characteristics of the rolled in the diagram, if they are not specified in the order, are installed by the manufacturer and are not given in the designation.

Examples of symbols:

A leaf of increased accuracy (a), highly high flatness (software), with a cropped edge (o), sizes 8x1500x12000 mm according to GOST 19903-74, made of steel grade of STZSP, category 3 according to GOST 14637-89:

^ A-P0-0-08 x 1500 x 12000 GOST 19903- 74

STZSPZ GOST 14637-89

The same, for rolled products intended for welded structures (SV):

A-P0-0-0-08 x 1500 x 12000 GOST 19903- 74 UCM STZSPZ-SV GOST 14637-89

A sheet of normal accuracy (b), improved flatness (PU), with a compressed edge (K), with dimensions of 26x1000x8000 mm according to GOST 19903-74, from steel grade STZSP, category 4 according to GOST 14637-89:

B-PU-K-26 x 1000 x 8000 GOST 19903-74 LHT STZSP4 GOST 14637-89

Roll of increased accuracy (s), with uncircumcised edge (but), with dimensions of 10x1500 mm according to GOST 19903-74, made of steel brand STZPS, category 3 according to GOST 14637-89:

A-YUY 1500 GOST 19903-74 STZPSS GOST 14637

ATTACHMENT. (Modified edition, change. No. 1, amendment).

Information details

1. Designed and introduced by the Ministry of Metallurgia of the USSR

2. APPROVED AND INTRODUCED RESOLUTION of the USSR State Committee for Product Quality Management and Standards of 22.12.89 No. 4023

3. Instead of GOST 14637-79, GOST 380-71 in terms of requirements for tolstolic rolling

4. The standard complies with the international ISO 4995 standard in terms of rolled up to 6 mm thick.

5. Reference regulatory and technical documents

6. Restriction of the validity of the Discontinued Protocol No. 5-94 of the Interstate Council on Standardization, Metrology and Certification (IUS 11-12-94)

7. Edition (September 2009) with a change No. 1 approved in December 1990 (IUS 5-91), amendment (IUS 12-2004)

List hot-rolled GOST 19903-74, 14637-89

Steel hot rolled sheet

Steel hot-rolled sheet thick GOST 14637-89 is produced with a thickness of 4-16 0 mm of various widths and lengths. Maximum width 600-1800 mm, length 2-8 meters. Tonalist Steel GOST 16523-97 has a thickness of 0.5 -3.9 mm, a width of 200-2300 mm. The sorting corresponds to GOST 19903-74. Supplied in the form of sheets or rolls. There are two types of this product: with edged and unedged edges.

Hot-rolled sheet from low-alloyed or carbon steel, the chemical composition of which must correspond to GOST 380-94. Steel hot-rolled sheet is produced by treating the pressure of the heated metal in the calibrated or smooth rolls.

In some cases, the surface of the sheet rolled is subjected to additional processing to give it the corresponding properties. Production of steel hot rolled sheet is carried out by the most modern technologies. It is manufactured on the most modern equipment, which is the newest achievement of scientific and technological progress. Due to this, a durable, which has durability during operation, product.

The main technological operations of rolling production are as follows: Preparation of the source material, heating, rolling and finishing. In preparing the starting material to rolling, various surface defects are removed from it, which increases the output of the finished rolled steel. This operation is especially necessary when rolling high-quality carbon and alloy steel. Compliance with the installed metal heating regimes before rolling, individual for each brand or steel stamps group, right choice The temperatures of the beginning and end of rolling, as well as the compression mode affect not only the quality of the steel hot-rolled sheet, but also on the performance of the mill. Violation of this metal heating can lead to the receipt of unsatisfactory mechanical properties of finished rental to marriage.

When rolling, the initial and final temperature is controlled, the specified compression mode. During the process itself, it is carefully checking the settings of the valve by observing the size and shape of the rolled; caliber condition; Installation and condition of surface valve fittings. In the rolling process, the effort is measured, which makes it possible to fully use the power of the mill. To monitor the condition of the surface of the steel hot-rolled sheet, samples are regularly taken. Sometimes they are subjected to etching and after that further inspect. The main surface control is carried out before cleaning the rolling.

sheet steel g / k:

• 1.5x1250x2500 ST3,
• 2.0x1250х2500 ST3,
• 2.5x1250х2500 ST3,
• 3.0x1250x2500 ST3,
• 4.0x1250x2500 ST3,
• 5.0-10x1500x6000 ST3,
• 12.0-14.0х1500х6000 ST3,
• 16.0-30.0x1500x6000 ST3,
• 30.0-50.0x2000x6000 ST3,
• 60.0-120.0x1500x6000 st3.

The size of the sheet of steel mass of 1 square meter (from the calculation of the specific gravity of 7.85 g / cm 2) must correspond to Table 1

Table 1

p. 1.

p. 2.

p. 3.

p. 4.

p. 5.

p. 6.

p. 7.

p. 8.

page 9.

p. 10.

1.2. Depending on the normalized characteristics, the rental is divided into categories: 1, 2, 3, 4, 5, 6.

1.3. Rental manufactured with thickness:

4 - 160 mm - sheets;

4 - 12 mm - rolls.

In terms of other requirements for the sorting of the rental of GOST 19903.

1.4. Examples of conventional designations are shown in the application.

2. Technical requirements

2.1. Characteristics

2.1.1. Rental is made of steel with a chemical composition corresponding to GOST 380.

Limit deviations for the chemical composition in the finished carpeting of the bucket analysis of the bucket test should not exceed the allowable GOST 380.

2.1.2. For rental up to 10 mm thick inclusive of steel stamps ST3CP, ST3PS, ST3SP is allowed to reduce the lower limit of the mass fraction of one of the elements - carbon by 0.04% abs., Manganese by 0.1% ABS. - When providing mechanical properties installed for these steel grades.

At the request of the consumer, the mass fraction of acid-soluble aluminum in the category 2 of category 2 with a thickness of up to 5 mm made of steel stamp stamp, stretched aluminum, should be at least 0.02%.

The mass fraction of silicon in the holder of categories 2 - 6 with a thickness of up to 8 mm inclusive, made of steel stamps ST2PS and ST3PS, spoken by silicon deoxidizers, is allowed less than 0.05% subject to the rest of the norms and requirements for the rental.

2.1.3. At the request of the consumer, the mass fraction of sulfur in the holder of categories 1 - 5 of steel of all grades, except for ST0, should not exceed 0.040%, phosphorus - 0.030%; In a category 6, the mass fraction of each of these elements should not exceed 0.025%.

2.1.4. In the box office intended for welded structures, the mass fraction of carbon should not exceed 0.22% (SV).

To ensure the required rental properties of all categories, heat treatment may be used.

It is allowed to manufacture a rental of categories 1 - 5 in a strengthened with a rolling heat heating or after controlled rolling.

2.1.7. The mechanical properties of hot rolled rolled products when tensile testing and bend must comply with the standards shown in Table. 2.

2.1.7.1. It is allowed to exceed the upper limit of the time resistance by no more than 50 N / mm 2 (5 kgf / mm 2) compared to those shown in Table. 2, subject to the rest of the norms, and in coordination of the manufacturer with the consumer - without limiting the upper limit.

2.1.7.2. In coordination of the manufacturer with the consumer, the value of the flow rate of the thickness of more than 20 mm is allowed by 10 N / mm 2 (1 kgf / mm 2) below compared to those shown in Table. 2.

Table 1

table 2

2.1.7.3. A decrease in relative elongation per 1% ABS is allowed. For rolled out a thickness of more than 8 mm and for each millimeter reduction of thickness for rolling with a thickness of 8 mm and less.

2.1.8. KCU KCU hot-rolled rolled rolled products 3 - 5 categories should correspond to the table. 3.

Table 3.

2.1.9. The mechanical properties of hardened rolled products during tensile tests, bending to parallelism of the parties and the rate of shock viscosity KCU should correspond to the table below. four.

Table 4.

2.1.5 – 2.1.9 (Modified edition, change No. 1).

2.1.10. KCV percussion velocity rates of categories 5 and 6 must comply with the table below. five.

Table 5.

2.1.11. FROM STAME Category 3 brand is manufactured by the manufacturer with the consumer, while the rate of shock viscosity with plus 20 ° C is taken according to Table. 3 for steel brands ST3PS and ST3SP.

2.1.12. There should be no ribbon on the surface of the rental, end-to-end gaps, rolled prigar and crusts, as well as bubbles-swirling, harmonica, cracks, captivity, pollution and rolled scale. Defects (risks, risks and other local defects) are allowed, which are not withdrawn for limiting dimensions.

2.1.13. The elimination of surface defects for rolling of all thickness produced on thick-walled mills is carried out by stripping. Strivered plots of rolled steel with a thickness of more than 10 mm brewed.

The stripping is carried out by an abrasive tool or methods that do not cause changes in the properties of rolling.

At the request of the consumer, welding of defects is not allowed.

2.1.14. When removing the defects of the surface of the rental surface, the thickness is allowed to reduce the thickness of no more than 5% nominal in excess of minus limit deviation, but not more than 3 mm, while the area of \u200b\u200ba separate stripped area of \u200b\u200bthe rolled surface should not be more than 100 cm 2, the total area of \u200b\u200ball strongest areas on one sheet - No more than 2% of its area.

2.1.15. With coincidence of stripping places on both sides of the rolled, the allowable stripping depth is defined as the sum of the depth of stripping on each side of the rolled, which does not exceed the limit deviation over the thickness.

2.1.16. The surface of the stripped area, not intended for the welding, should not have sharp edges.

2.1.17. At the request of the consumer, stripping defects to a depth, withdrawn the thickness of rolling for the limit dimensions, is not allowed.

2.1.18. The depth of stripping under the welding of rolling thickness up to 120 mm should not exceed 25% of the actual thickness, the rolled large thickness is not more than 30 mm.

2.1.19. The deposited zone must overlap the expanded area at least 5 mm along the contour and after stripping, do not remove the thickness of the rolling for the limit dimensions.

The area of \u200b\u200ba separate brewed area of \u200b\u200bthe rolled surface should not be more than 25 cm 2, the total area on one sheet is not more than 1% of its area.

2.1.20. On the cropped edges of the rolled, there should be no bundles, cracks and Rvannin, as well as displays for limit sizes in width and length:

volosovine and voltage cracks of a depth of more than 2 mm and more than 25 mm long;

zzbinin depth of more than 2 mm for rolling thickness up to 20 mm and 3 mm - rolled large thicknesses.

On the edges of the rolled, there should be no burrs a height of more than 2 mm.

2.1.21. Crumpled and bending edges after trimming should not remove the rental for limit deviations from flatness according to GOST 19903.

2.1.22. On the compressed edges there should be no bundles, ribs, cracks, bubbles-swirling, captivity, pollution, rolled scale, hairovine and risks, withdrawing rental for limit sizes in width.

2.1.23. The depth of defects on the uncircumcised edge of the clean or roll should not exceed half the limit deviation in width and not output the width of the rolling for the nominal size.

2.1.24. The slot rate norms are in accordance with classes 01, 2 and 3 according to GOST 22727.

The control of the cloth zone is carried out at the request of the consumer.

2.1.25. At the request of the consumer, the surface of the rolled should be cleaned from the scale and is lubricated with neutral oil or other neutral preservative material.

2.1.26. Rental in rolls should not have:

lowered by more than 90 ° side edges;

twisted and crumpled ends;

the ends of the incomplete width in length exceeding the width.

At the request of the consumer, the ends of the incomplete width must be cropped.

2.1.27. The manufacture of composite rolls intended for the manufacture of pipes, including welding parts, is not allowed.

2.3.1. Packaging of rolled products for the regions of the Far North and equated to them areas - according to GOST 15846.

3. Acceptance

3.2. Each batch is accompanied by a document on GOST 7566 with an additional indication:

View and processing mode - thermal or hardening (when conducting):

Accuracy of rolling - in thickness, flatness, sickle;

The nature of the edge;

Surface quality, including the presence of correction of surface defects with welding;

Results of non-destructive continuity control;

Results of testing tests on samples with a concentrator of V. type

3.3. To check the chemical composition of finished rental, the size of the sample according to GOST 7565.

3.4. Control of the chemical composition of finished rental at the manufacturer is allowed not to be carried out when providing established norms on the results of the analysis of the bucket sample.

3.5. Sampling volume to check the quality according to PP. 2.1.7 - 2.1.11 must match Table. 6.

Table 6.

3.6. It is allowed in coordinating the manufacturer with the consumer to the manufacturer, the determination of the shock viscosity on samples with a concentrator of the type V is carried out periodically at each twentieth batch.

3.7. Quality control of the surface is carried out on all sheets and ruls of the party.

To control the sizes, 10% is selected from the party, but not less than 5 pcs. Sheets, rolls - not less than 2 pcs.

3.8. In coordination of the manufacturer with the consumer, control of rolled steel continuity. The control is carried out on all sheets of the party or selectively. In selective control, the size of the sample - 10% of the sheets, but not less than 5 pcs.

The continuity of rolling in rolls, as well as sheets obtained by a sharp roll, do not control.

3.9. Upon receipt of unsatisfactory test results, at least one indicator, the re-check is carried out on the sample, selected in accordance with GOST 7566.

Upon receipt of unsatisfactory results at periodic tests, they are translated into receiving and finished to obtain positive results on three parties in a row.

Results of repeated tests apply to the entire batch.

Upon receipt of unsatisfactory test results in selective ultrasound control, the manufacturer tests on each sheet of batch.

4. Test methods

4.1. To verify the chemical composition of the sample, select GOST 7565.

Chemical analysis is carried out according to GOST 22536.0 - GOST 22536.11, GOST 27809, GOST 17745 or other methods that ensure the necessary analysis accuracy.

If disagreements occur, the methods established by this Standard are used.

4.2. For mechanical and technological tests from a rolled unit (PP. 3.5 and 3.6), samples are taken according to GOST 7564:

One sample - for tensile tests;

Three samples - for testing for impact bending with a concentrator of the type U;

Three samples - for testing for impact bending with a concentrator of the type V;

One sample - for bending test.

Samples for testing sheets and rolls, except for samples for testing for impact bending types 11 and 13, cut across the rolling direction. Samples for testing for impact bending types 11 and 13 - along the rolling direction.

In the manufacture of samples for testing for impact bending, one of the sample faces corresponding to the surface of the rolling is left untreated.

4.3. Testing tests are carried out according to GOST 1497.

4.4. Impact bending tests are carried out according to GOST 9454.

For rolled thickness 4 - 9 mm - on samples of type 3 or 13;

a thickness of 10 mm and more - type 1 or 11. For rolled out a thickness of 4 - 10 mm, made with a deviation to minus tolerance, the shock viscosity is determined on samples of thickness equal to the thickness of the rolled.

4.5. Impact bending tests after mechanical aging are carried out according to GOST 7268.

4.6. Bending test is carried out according to GOST 14019.

4.7. When testing the hire on the impact bending, it is not allowed to reduce the values \u200b\u200bof the shock viscosity on one sample by more than 30%, while the average value should be not lower than the established norms.

4.8. It is allowed to use non-destructive, including statistical methods for controlling the rental when ensuring accuracy and reliability not lower than those achieved by the methods provided for by this standard.

In case of disagreement in assessing the quality of rolled and during periodic tests, control methods provided for in this standard are used.

4.9. Control of solidness of sheets - according to GOST 22727.

Scan type (solid or discrete linear) sets the manufacturer.

The depth of the bonding zone when controlling the maximum permissible length of unbleasies should be at least 50 mm.