GOST 3640-94

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  ГОСТ 3640-94

GOST 3640−94 Zinc. Specifications

GOST 3640−94

Group W51

INTERSTATE STANDARD

ZINC

Specifications

Zinc. Specifications

ISS 77.120.60
GST 2130 17

Date of introduction 1997−01−01

Preface

1 DEVELOPED by Eastern research mining and metallurgical Institute of nonferrous metals (VNIItsvetmet)

INTRODUCED by Gosstandart of the Republic of Kazakhstan

2 ADOPTED by the Interstate Council for standardization, Metrology and certification on October 21, 1994 (minutes No. 6 MGS)

The adoption voted:

3 Decree of the Russian Federation Committee on standardization, Metrology and certification of 27.06.96 N 433 interstate standard GOST 3640−94 introduced directly as state standard of the Russian Federation from January 1, 1997

4 REPLACE GOST 3640−79

5 REISSUE. June 2011

1 Scope

This standard applies to primary zinc ingots and blocks.

Mandatory requirements for product quality are presented in section 4.

2 NORMATIVE REFERENCES

The present standard features references to the following standards:

GOST 12.1.016−79 System of standards of occupational safety. The air of the working area. Requirements for measurement techniques of concentrations of harmful substances

GOST 12.2.009−99 System of standards of occupational safety. Metalworking. General safety requirements

GOST 12.3.009−76 System of standards of occupational safety. The work of loading and unloading. General safety requirements

GOST 12.4.010−75 System safety standards. Personal protective equipment. Mittens special. Specifications

GOST 12.4.013−85* the System of occupational safety standards. Glasses protective. General specifications
_______________
* On the territory of the Russian Federation GOST R 12.4.230.1−2007 (EN 166−2002).


GOST 12.4.023−84 System of standards of occupational safety. Protective face shields. General technical requirements and methods of control

GOST 12.4.028−76 System of standards of occupational safety. Respirators RC-1 «Lepestok». Specifications

GOST 12.4.032−77 leather Shoes for protection against high temperatures. Specifications

GOST 12.4.045−87 standards System of labor safety. Men suits for protection against high temperatures. Specifications

GOST 12.4.100−80 standards System of labor safety. Men’s overalls for protection against non-toxic dust, mechanical effects and General industrial contaminations. Specifications

GOST 12.4.131−83 Bathrobes for women. Specifications

GOST 892−89 Tracing paper. Specifications

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

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

GOST 14192−96 Marking of cargo

GOST 17261−77 Zinc. Method of spectral analysis.

GOST 19251.1−79 (ISO 714−75, ISO 1055−75) Zinc. Methods of iron determination

GOST 19251.2−79 (ISO 713−75, ISO 1054−75) Zinc. Method for the determination of lead and cadmium

19251.3 GOST-79. Zinc. Methods for determination of copper

19251.4 GOST-79. Zinc. Method for the determination of arsenic

19251.5 GOST-79. Zinc. Methods for determination of tin

19251.6 GOST-79. Zinc. Methods for determination of antimony

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

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

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

GOST 28507−90 leather Shoes for protection against mechanical influences. General specifications

3 GENERAL TECHNICAL REQUIREMENTS

3.1 Zinc must be manufactured in accordance with the requirements of this standard technological instruction, duly approved.

3.2 Designation of grades and their chemical composition shall conform to the requirements specified in table 1.


Table 1 — Brand and chemical composition

Percentage

3.2.1 In zinc brand CV00 mass fraction of bismuth, Nickel and antimony should be no more than 0,00001% of each.

3.2.2 In zinc grades C2 and C3 mass fraction of antimony should be not more than 0.02%.

Zinc grades CV, C0A, C0, used in the production of zinc powder for electrical industry, the mass fraction of antimony should not exceed 0,001%.

3.3 Permissible standards for levels of impurities can be changed by agreement between the manufacturer and the customer without changing the content of the basic substances and conditions for the supply of products.

3.4 Mass fraction of zinc determined by the difference between 100% and the sum of the content of impurities of lead, iron, cadmium, copper and tin in percent.

3.5 Zinc all brands, except brand CV00, made in the form of ingots weighing 19−25 kg and blocks, 500, 1,000 kg of Permissible weight deviation units of ±10%.

Zinc brand CV00 are made in the form of pigs weighing 4−5 kg and 8−10 kg.

The mass of ingots and blocks can be changed by agreement between the manufacturer and the consumer.

The pig should have a form suitable for packaging.

On ingots can be grooves for ease of separation.

3.6 On the surface of ingots and blocks should not be slag and other foreign inclusions.

3.7 Ingots of zinc in a fracture or cut, shall not contain non-metallic inclusions.

3.8 OKP Codes are given in Appendix A.

3.9 On each pig and a block of zinc, except for zinc brand CV00 should be marked trademark of the manufacturer and the melting number.

Each pig brand CV00 should be marked number smelting.

3.10 Ingots and blocks zinc that mark the end of one strip of paint:

brand CV0 — blue color;

brand grey yellow;

brand C0A

brand C0 white;

brand C1 green;

brand C2 — red color;

brand C3 brown.

The color marking is applied on one pig of the top row of the package or of the stack.

For pigs zinc brand CV00 color-coded double blue stripe is applied to the packaging or the label attached to the container.

3.11 Pig zinc brand CV00 Packed in paper according to GOST 8828 or tracing paper according to GOST 892 and placed in boxes of types I, II-1, III-1 according to GOST 2991. The gross weight of one box not more than 60 kg.

3.12 Transport marking under GOST 14192 with the application of package-handling the sign N 8.

3.13 the Formation of packages according to GOST 21399.

4 SAFETY REQUIREMENTS

4.1 the Metallic zinc is non-toxic and pozharovzryvobezopasnost.

In the process of getting zinc when sampling from liquid metal at the interaction of molten zinc with the oxygen in the air to produce an aerosol of zinc oxide. Zinc oxide is one of the substances 2-hazard class. The maximum permissible concentration of zinc oxide in workplace air is 0.5 mg/m.

4.2 General safety requirements when working on machine tools — according to GOST 12.2.009.

4.3 Work with zinc, you must perform the following personal protective equipment: respirator type «Petal» according to GOST 12.4.028; goggles according to GOST 12.4.013 GOST or 12.4.023; overalls for 12.4.045 GOST, GOST 12.4.100 or GOST 12.4.131; footwear by GOST or GOST 28507 12.4.032; the means of protection according to GOST 12.4.010.

4.4 safety Requirements during loading and unloading — according to GOST 12.3.009 and GOST 21399.

4.5 Control of air of working zone on the content of zinc oxide is carried out according to GOST 12.1.016.

5 ACCEPTANCE RULES

5.1 Zinc taking parties. The party should consist of zinc to one brand and feature a document about quality that contains:

name of enterprise-manufacturer and its trademark;

the name of the product and its brand;

part number (fusion);

the weight of the batch;

the results of chemical analysis;

the date of manufacture;

the designation of this standard.

5.2 Each batch of zinc is subjected to acceptance tests for compliance with the requirements of 3.2−3.7.

5.3 Checking the quality of the surface subjected to all pigs and blocks within the party.

5.4 To control the chemical composition of the zinc alloy can be selected as from molten metal and ingots and blocks.

5.5 To control the chemical composition of zinc ingots mark CV00 a sample taken from each pig party.

To control the chemical composition of the ingots zinc brands CV0, CV, C0A, C0, C1 are selected 1% of the ingots, zinc grades C2, C3 — 2% of pigs, not less than three pigs from each batch.

To control the chemical composition of a sample of units selected from each of the second unit.

5.6 Upon receipt of unsatisfactory results of analysis of the chemical composition of at least one of the indicators of repeat analysis on a double sample for zinc CV00 — at twice the sample taken from the same batch.

Results re-analysis apply to the entire party.

5.7 quality assurance fracture surface of zinc ingots manufacturer conducts periodic on demand of the consumer on five ingots of the party.

5.8 Mass fraction of impurities of aluminium, arsenic and antimony are guaranteed by the manufacturer within the limits of normalized parameters and are determined by the requirement of the user.

6 METHODS TO CONTROL

6.1 Selection and preparation of samples from molten metal is carried out by ensuring the representativeness of the sample received for analysis.

6.2 General requirements to selection and preparation of samples for chemical analysis from the ingots and blocks — GOST 24231.

For obtaining spot samples zinc brand of CV00 in the midline pig: vegetable cutter, after a preliminary cleaning of the surface to a depth of 0.3−0.5 mm, remove the chips.

Spot samples of other brands of zinc are taken by drilling, milling or sawing.

The sample blocks were taken by cutting two opposite diagonal corners for the entire height of blocks.

The mass of laboratory samples for zinc brand CV00 should be at least 0.1 kg of zinc to other brands — not less than 0.5 kg.

6.3 Chemical composition of zinc brand CV00 determined by regulations. Mass fraction of cadmium in zinc brand CV00 is determined according to GOST 17261, arsenic — GOST 19251.4.

Chemical composition of zinc other grades is determined according to GOST 17261, 19251.1 GOST-GOST 19251.6.

Allowed to use other normative documents on methods of analysis of samples, if their accuracy is not inferior to the indicators stipulated by the applicable standards.

6.4 In the case of disagreements in the evaluation of the chemical composition evaluation was carried out according to GOST 17261, 19251.1 GOST-GOST 19251.6.

6.5 Monitoring of the surface quality of ingots and blocks and kink pigs is carried out visually, without the use of magnifying devices.

7 TRANSPORTATION AND STORAGE

7.1 Transporterowych zinc by all kinds of transport in accordance with cargo carriage regulations applicable to transport of this form, and mail parcels.

Stowage and securing of cargoes transported by rail, must comply with the technical conditions of loading and fastening of cargoes, approved by the Ministry of Railways.

With marine transportation shall be performed in accordance GOST 26653.

7.2 Zinc brand CV00 stored in closed premises in the manufacturer’s packaging without contact with a metal corrosive substances and dust.

Zinc other brands keep indoors. Be stored zinc of these brands on specially prepared platforms (concrete, wood flooring, pallets, etc.) without metal pollution and contact with aggressive substances.

8 MANUFACTURER’S WARRANTY

8.1 the Manufacturer guarantees the conformity of zinc to the requirements of this standard if the conditions of transportation and storage.

8.2 the Warranty period of storage of zinc is 15 years from the date of manufacture.

Upon expiration of the warranty period prior to use, the products must be checked for compliance with the requirements of this standard.

Annex a (informative). OKP CODES

APPENDIX A
(reference)

Table A. 1 — OKP Codes