GOST 1020-77

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  ГОСТ 1020-77

GOST 1020−97 casting of Brass ingots. Specifications

GOST 1020−97

Group В57

INTERSTATE STANDARD

BRASS FOUNDRY INGOTS

Specifications

Casting brass in pigs. Specifications.

ISS 77.120.30
77.120.60
GST 17 8110

Date of introduction 2001−07−01

Preface

1 DEVELOPED by the Interstate technical Committee for standardization MTK 107, Donetsk state Institute of non-ferrous metals (Danism)

SUBMITTED to the State Committee of Ukraine for standardization, Metrology and certification

2 ADOPTED by the Interstate Council for standardization, Metrology and certification (minutes N 11 dated April 23, 1997)

The adoption voted:

3 Resolution of the State Committee of the Russian Federation for standardization and Metrology dated December 19, 2000 N 384 St interstate standard GOST 1020−97 introduced directly as state standard of the Russian Federation from July 1, 2001

4 REPLACE GOST 1020−77

1 Scope

This standard applies to brass foundry ingots, made from scrap and waste of nonferrous metals and alloys and designed for the needs of the economy and exports, as well as charge material for the manufacture of brass according to GOST 17711.

The purpose of the brass is given in Appendix A.

2 Normative references

The present standard features references to the following standards:

GOST 12.1.005−88 standards System of labor safety. General hygiene requirements for working zone air

GOST 12.1.007−76 System of standards of occupational safety. Harmful substances. Classification and General safety requirements

GOST 12.4.013−85* the System of occupational safety standards. Glasses protective. General specifications
________________
* On the territory of the Russian Federation GOST R 12.4.013−97.

GOST 12.4.021−75 System safety standards. System ventilation. General requirements

GOST 1652.1−77 (ISO 1554−76) Alloys copper-zinc. Methods for determination of copper

GOST 1652.2−77 (ISO 4749−84) Alloys copper-zinc. Methods for determination of lead

GOST 1652.3−77 (ISO 1812−76, ISO 4748−84) Alloys copper-zinc. Methods of iron determination

GOST 1652.4−77 Alloys copper-zinc. Methods for determination of manganese

GOST 1652.5−77 (ISO 4751−84) Alloys copper-zinc. Methods for determination of tin

GOST 1652.6−77 Alloys copper-zinc. Methods for determination of antimony

GOST 1652.7−77 Alloys copper-zinc. Methods for determination of bismuth

GOST 1652.8−77 Alloys copper-zinc. Methods for determination of arsenic

GOST 1652.9−77 (ISO 7266−84) Alloys copper-zinc. Method for the determination of sulfur

GOST 1652.10−77 Alloys copper-zinc. Methods for determination of aluminium

GOST 1652.11−77 (ISO 4742−84) Alloys copper-zinc. Methods for determination of Nickel

GOST 1652.12−77 Alloys copper-zinc. Methods for determination of silicon

GOST 1652.13−77 Alloys copper-zinc. Methods for determination of phosphorus

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

GOST 3560−73 package steel Strip. Specifications

GOST 14192−96 Marking of cargo

GOST 17711−93 Alloys copper-zinc (brass) foundries. Brand

GOST 21399−75 Packages transport of pigs, cathodes and ingots of non-ferrous metals. General requirements

GOST 21650−76 means of fastening of package cargoes in transport packages. General requirements

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

GOST 25086−87 non-ferrous metals and their alloys. General requirements for methods of analysis

GOST 26653−90 Preparation of General cargoes for transportation. General requirements

3 Definitions

In this standard use the following terms with respective definitions:

3.1 slag inclusion: a Defect in the form of a cavity, filled with slag.

3.2 contaminants: a Defect in the form of a metallic or non-metallic inclusions having a boundary surface with the base metal.

3.3 captivity: a defect in the form of a metal or oxide layer on the casting surface that occurs when not enough calm pouring of the metal.

3.4 the influx Defect in the form of leakage of metal to the surface of the base metal.

3.5 Bay: a Defect in the form of a metal protrusion on the pig, caused by ingress of liquid metal into the gaps on the connectors of the mold (shape).

3.6 inflation: The defect in the form of blistering of the metal surface that occurs in pigs because of the presence of gas bubbles or non-metallic inclusions.

4 Stamps and technical requirements

4.1 Casting of brass ingots manufactured in accordance with the requirements of this standard technological instruction, duly approved.

4.2 Brand and chemical composition of brass shall conform to the requirements of table 1.


Table 1 — Chemical composition of brass

End of table 1

4.3 the Mass of each pig shall not exceed 42 kg For silicon brass ingots weight allowed to 45 lbs. Shape and size of pigs established by the manufacturer.

4.4 On the surface of ingots shall not be sagging, bays, vaduthala, slag and foreign inclusions.

The total surface area occupied by the oxide films and plenary, shall not exceed 15% of the surface pigs.

4.5 breaking pig needs to be tight and without foreign inclusions.

4.6 Additional technical requirements may be established in contractual agreement between the consumer and the manufacturer.

4.7 each pig must be applied:

— trademark or a trademark and the name of the manufacturer;

— number of melt;

— color coded alloy.

4.8 Color coding is applied to the ends of the ingots has a dye in the form of vertical stripes and crosses for brass stamps:

— LS — white;

— Lsch — white and white cross;

— LSD — two white;

— Lsdch — two white and white cross;

— L. white, black and white;

— LK — red and white;

— LK1 — white, red, and white;

— LK2 — white and two red;

— LKS — black, red and black;

— Lmcs — white and blue;

— Lmczh — white and green;

LA white and yellow;

— Lmcka — three red;

— Lazhmc — white and brown;

— Lmcsk red;

— Lmcska — two red.

5 acceptance Rules

5.1 Alloys present to the acceptance of the parties. The party must contain ingots of an alloy of one brand, of one or more heats and be accompanied by a document about quality that contains:

— trademark or a trademark and the name of the manufacturer;

— brand alloy;

— the batch number;

— the weight of the batch;

— number of (a) melting (melting);

— the result (s) for chemical analysis of smelting (melting);

— date of manufacture;

— the designation of this standard.

5.2 Batch should not contain more than 1% broken pigs. In the party intended for export, broken ingots are not allowed.

5.3 Checking the quality of the surface subjected to at least 20 pigs.

5.4 quality Control of the fracture is carried out at the request of the consumer. For quality control of the fracture taken at least two pigs.

5.5 To control the chemical composition of each heat are taken from at least two pigs. On the manufacturer is allowed to take samples from molten metal according to the method approved in the prescribed manner.

5.6 If unsatisfactory test results of at least one of the indicators it is carried out re-tests on twice the number of samples selected from the same heat. The results of repeated testing are spreading to the entire party.

6 test Methods

6.1 To check the quality of the jog selected pig half nadpilivayut and break.

6.2 Checking the quality of the surface and of the fracture is carried out visually.

6.3 Selection and preparation of samples for chemical analysis is carried out according to GOST 24231, for spectral analysis according to the method approved in the prescribed manner.

In the selection and preparation of samples for chemical analysis must comply with the requirements for safe operation in accordance with GOST 12.1.005, GOST 12.1.007, GOST 12.4.013 GOST 12.4.021 and regulations approved in the established order.

6.4 Determination of chemical composition is carried out according to GOST 25086, 1652.1 GOST-GOST 1652.13.

Allowed to determine the chemical composition by other methods of equal accuracy standardized.

If there is disagreement in the assessment of the chemical composition of its definition is carried out according to GOST 1652.1-GOST 1652.13.

The phosphorus content and Nickel is determined by the requirement of the user.

7 Transportation and storage

7.1 Pig transporterowych in packs of 21399 GOST, GOST 26653. The packages shall consist of ingots of one brand.

Packs fasten with packing tape according to GOST 3560 or steel wire of diameter not less than 10 mm according to GOST 3282.

Allowed to use other means of fasteners according to GOST 21650, ensuring the safety of the package.

Transport marking of packages — according to GOST 14192. On the side of the package is attached a metal or wooden label materials to ensure its safety.

7.2 Packages transporterowych all kinds of transport in accordance with goods transportation regulations applied to this type of transport.

Packets destined for export, transporterowych in covered vehicles.

7.3 Pig kept in conditions that ensure preservation of their quality.

Annex a (informative). The purpose of the brass

APPENDIX A
(reference)

Table A. 1

ANNEX B (reference). Mechanical properties Sventevith brass

APPENDIX B
(reference)

Table B. 1