GOST 546-2001

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  ГОСТ 546-2001

GOST 546−2001 copper Cathodes. Specifications (with Change No. 1)

GOST 546−2001
Group W51

INTERSTATE STANDARD
COPPER CATHODES
Specifications
Copper cathodes. Specifications

ISS 77.150.30
GST 17 3323

Date of introduction 2002−03−01

Preface

1 DEVELOPED by the Interstate technical Committee for standardization MTK 503 «Copper"

SUBMITTED by the Technical Secretariat of the Interstate Council for standardization, Metrology and certification

2 ADOPTED by the Interstate Council for standardization, Metrology and certification (minutes N 19 dated 24 may 2001)

The adoption voted:

3 Resolution of the State Committee of the Russian Federation for standardization and Metrology, dated 28 August 2001 No. 358-St inter-state standard GOST 546−2001 introduced directly as state standard of the Russian Federation from March 1, 2002

4 REPLACE GOST 546−88 (ISO 431−81)

5 EDITION (March 2007), adjusted (I & C 7−2002)


The Change N 1, approved and promulgated by the Order of Rosstandart dated 10.09.2014 N 1067-St c 01.03.2015

Change No. 1 made by the manufacturer of the database in the text IUS N 1, 2015

1 Scope

This standard applies to copper cathodes obtained by electrolysis of aqueous solutions and is suitable for the production of cast and deformed products of copper and its alloys.

Standard suitable for certification purposes.

2 Normative references

The present standard features references to the following standards:

GOST 859−2001 Copper. Brand

GOST 7229−76 Cables, wires and cords. Method of determination of electrical resistance of conductors and conductors

GOST 9717.2−82 Copper spectral analysis on a metal standard samples with photographic registration of spectrum

GOST 9717.3−82 Copper. Method of spectral analysis of oxide standard specimens

GOST 13938.11−78 Copper. Methods for determination of arsenic

GOST 13938.13−93 Copper. Methods of determining the mass fraction of oxygen

GOST 14192−96 Marking of cargo

GOST 16504−81 System of state testing products. Testing and quality control. Key terms and definitions

GOST 18242−72* Statistical acceptance inspection by alternative feature. Plans control
________________
* On the territory of the Russian Federation GOST R ISO 2859−1-2007.


GOST 18321−73 Statistical quality control. Methods of random selection of piece products

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

GOST 22235−2010 freight Wagons main Railways of 1520 mm. General requirements for ensuring safety during loading-unloading and shunting works

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

GOST 27981.1−88 Copper of high purity. Methods of atomic-spectral analysis

GOST 27981.2−88 Copper of high purity. Method of chemical-atomic-emission analysis

GOST 27981.5−88 Copper of high purity. Photometric methods of analysis

GOST 27981.6−88 Copper of high purity. Polarographic methods of analysis

GOST 28106−89 copper Cathodes. The selection and preparation of samples and specimens for determining the electrical resistivity

GOST 28515−97 Copper. Test method samples for the elongation of the spiral

GOST 31382−2009 Copper. Methods of analysis

Note — When using this standard appropriate to test the effect of reference standards in the state at the corresponding index of standards, made as of January 1 of the current year and related information signs, published in the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.

(Changed edition, Rev. N 1).

3 Definitions

In this standard use the following terms with respective definitions:

3.1 representative sample: a Certain number of cathodes taken from the lot, which sufficiently represent the properties of the party as a whole and are used for taking spot samples.

3.2 sample point: the Sample of the metal taken at a time from the installed portion of the cathode included in the sample.

3.3 the composite sample: a Sample consisting of all point samples that characterize the average chemical composition of the party.

3.4 laboratory sample: All or part of the joint samples, prepared properly and are sufficient for chemical analysis.

3.5 pin pendant: a Loop of copper plates with thickness up to 1 mm and a width up to 100 mm that is welded or riveted to the cathode base and serving to supply current to the cathode and hanging it to the cathode rod (ear).

3.6 growths: Protrusions of different size, shape and structure. Distinguish dendritic growths and the growths of a rounded shape.

(Changed edition, Rev. N 1).

3.7 color tint: Oxidized areas in the form of spots and stripes of different colors, due to the thermal conditions of cooling of the cathode after washing.

3.8 patina of oxidized copper: the Areas of dark color, consisting of copper oxide, formed during the storage of the cathodes in a humid atmosphere.

3.9 RAID sulfates: Local education in green or blue-green color arising due to separation of sulfuric acid from the micropores when it absorbs moisture from the atmosphere.

3.10 traces of hardness salts: Insoluble in hot water deposits is gray (salt of calcium, magnesium and other light metals).

3.11 plaque salts in the attachment of the hangers to the fabric of the cathode: a Mixture of complex composition of sulfate, carbonate and hydroxide of copper is formed on the perimeter of the suspension from the interaction of atmospheric air with traces of acid protruding from the gap between the suspension and blade during the transportation and storage of the cathodes. During transportation by sea to the composition of the plaque also includes the chlorides.

3.12 dendrite outgrowth: Crystal formation, having a treelike branching form.

(Added, Rev. N 1).

4 Technical requirements

4.1 Copper cathodes according to the chemical composition must conform to copper, grades M00k, M0k, M1K according to the GOST 859.

OKP codes are given in Appendix A.

Example of symbolic designation of copper cathodes brands M00k:

M00k GOST 546−2001

(Changed edition, Rev. N 1).

4.2 On the surface and edges of the cathodes should not be dendritic growths. Allowed rounded outgrowths, buried in the body of the cathode, and the tabs rounded shape on the edges of the cathodes and spots (indentations) from remote tumors.

(Changed edition, Rev. N 1).

4.3 the cathode Surface should be clean, well washed from electrolyte and sludge and must not have deposits of plaque and sulfates of copper and Nickel and mechanical impurities (except wood residues after transportation).

Allowed on the surface of the cathodes of the color tint and patina of oxidized copper.

The presence of hardness salts and deposits the salts on pin suspensions in the attachment of the suspension to the fabric of the cathode rejection sign is not.

Determination of surface defects in accordance with section 3.

(Changed edition, Rev. N 1)

4.4 the Cathodes supply the whole of the cathode pin with pendants or without them, either in the form of cut cathodes.

The shape, size and mass of the cathode when required is set in the contract.

4.5 In the agreement (contract) parties are not stipulated in this standard requirements for physical properties of the cathode (electrical resistivity, spiral elongation, density, plasticity, sediment composition, etc.)

4.6 Packaging

The cathodes must be formed into bundles weighing not more than 1500 kg and maximum height of 500 mm.

Package requirements should correspond to GOST 21399.

By agreement with consumer it is permitted to supply packages that are bound with copper wire, catalkoy or tape, to be melted without dissolution, and delivery of packages increased mass. The procedure for the formation of such packages with an indication of its size and weight, type and cross section the wrapping material and number of zones is established by the normative documents agreed upon with the transport organizations and approved in the established procedure.

Packages copper cathodes designed for the transport involving several modes of transport and for long-term storage, should be formed with a crimping force of at least 98 kN (10000 kgf).

4.7 Marking

Cathodes formed in the packages should be marked according to GOST 21399. Each cathode marking not be.

The transport label must comply with GOST 14192.

5 acceptance Rules

5.1 the parties accept Cathodes, cathodes consisting of one brand of copper. The weight of the batch is not limited.

5.2 For each batch of cathodes draw up a quality document which must contain:

— name and (or) the trademark of the manufacturer;

— name of the product;

— the number of seats in the party;

— the batch number;

— brand copper;

mass parties — net and gross;

— test results or confirmation of conformity of products with requirements of this standard;

— date of manufacture;

— the designation of this standard.

5.3 Control is subjected to each batch.

To check the chemical composition of the cathodes when the content of impurities guaranteed by the technology and composition of raw materials, allowed the application of statistical acceptance control in accordance with the requirements of GOST 18242.

5.4 Copper cathodes in the party subjected to continuous and selective quality control.

Type of control — according to GOST 16504, minimum representative sample sampling inspection depending on a controlled characteristic must comply with table 1.

Table 1

Rules for the selection of cathodes in the sample — according to GOST 18321.

5.5 Upon receipt of unsatisfactory results of testing according to claim 4.1 repeat tests are carried out at twice the sample taken from the same batch. The results of repeated tests are final and apply to the entire party.

5.6 By agreement (contract) with the customer-delivery of the copper cathodes from all brands without verifying the chemical composition with the confirmation of the manufacturer on compliance with the requirements of this standard or a quality assessment from the consumer.

6 Methods to control

6.1 Selection and preparation of samples

6.1.1 To monitor the chemical composition of each cathode sample selected spot samples.

6.1.2 sampling should be used methods and tools, eliminating the contamination and oxidation of samples. The cathode surface before sampling should be cleaned of dust and other mechanical contaminants with a stiff brush (non-metallic).

Discard the surface layer of metal when sampling is not allowed.

6.1.3 Spot samples from the entire cathode were taken by cutting (pressing) discs with a diameter of from 10 to 40 mm or drilling through at four points on the corners, a distance of 50 to 100 mm from the edges of the cathode and at one point in the center of the cathode.

Allowed sampling of shavings by planing or milling of faces, obtained from the cutting of the cathode according to GOST 24231.

6.1.4 Spot samples from the cut cathodes taken at three points on the diagonal cut of the cathode from the corner to the center equally spaced from each other or milling (planing) of faces obtained from the cutting of the cathode for part.

6.1.5 Spot samples in the form of discs or the combined sample chips weighing at least 500 grams pre-treated with a magnet, is melted in a graphite crucible with a cover in an induction furnace or resistance furnace. The molten metal in the crucible is kept under a lid for 5−10 min and poured into a graphite mould two test ingot with a diameter of 35 mm and a height of 20−30 mm. Bullion is kept in the forms of air not more than 1 min, then removed from forms and cool in cold water. Graphite crucible before use is pre-washed by melting of copper of the same party.

(Changed edition, Rev. N 1)

6.1.6 Test bars are subjected to mechanical processing to remove the oxidized layer and the casting defects and, if necessary, cut vertically into equal parts.

A test ingot or part completely pulverized by grinding, milling, planing or drilling tool with a carbide cutter or use directly in a compact form for determination of chemical composition by spectral methods.

6.1.7 a Sample chip, if necessary, pulverized, and treated with a magnet and cut way kvantovaniya to the mass of not less than 150 g.

Be used for the chemical analysis of the combined sample chips, obtained from the cathodes, without its melting.

6.1.8 For determining the mass fraction of oxygen from the two cathodes from the party cut out or cut out on two samples from each cathode in the locations of the point samples (in one of the corners and the center) the entire thickness of the cathode.

Use spot samples disks to their melting, and a combined sample of shavings from the cathodes. The degreasing or etching of chips is not carried out.

Mass and preparation of samples for analysis — according to GOST 13938.13.

6.1.9 By agreement (contract) with the consumer is allowed to install other sample sizes, circuits and methods of sampling and preparation of samples, not reducing their representativeness.

6.2 quality Control the surface of the cathodes at the 4.2 and 4.3 is carried out visually without the use of magnifying devices.

6.3 Chemical composition of the cathode is determined according to GOST 31382, 13938.11 GOST, GOST 13938.13, 9717.2 GOST, GOST 9717.3, 27981.1 GOST, GOST 27981.2, 27981.5 GOST, GOST 27981.6 depending on brand of brass. Mass fraction of copper in cathodes copper grades M0k, M1K is determined by the difference between 100% and sum of impurities, normalized to GOST 859.

Allowed to determine the chemical composition of the other methods, accuracy is not inferior to those specified.

The differences in the evaluation of the chemical composition of copper cathode analysis is carried out according to GOST 31382, 13938.11 GOST, GOST 13938.13, 9717.2 GOST, GOST 9717.3, 27981.1 GOST, GOST 27981.2, 27981.5 GOST, GOST 27981.6.

(Changed edition, Rev. N 1).

6.4 Control of physical properties is carried out on the agreed with the customer techniques. Recommended methods of determining the elongation of a spiral — according to GOST 28515, specific electric resistance — according to GOST and GOST 28106 7229.

6.5 Quality linking packages formed without crimping force not less than 98 kN (10000 kgf), control static load equal to the weight of the two packages. This should not be a significant weakening of packing tape or wire.

7 Transportation and storage

7.1 Transportation of packages copper cathodes — according to GOST 21399 in accordance with cargo carriage regulations applicable to each mode of transport.

By rail copper cathodes transporterowych in covered wagons carload or containerized shipments. Placement and mounting of the cathodes in vehicles — according to the technical conditions of loading and fastening of cargoes and GOST 22235.

7.2 the Cathodes should be kept stacked in a clean enclosed space in which there are no pairs of active chemicals. Allowed storage of copper cathodes at the sites with a hard surface under the canopy or without canopy stacks, protected from contamination and moisture, for a period not exceeding one year. Placement of stacks in the warehouse and packages in the stack according to GOST 21399.

(Amendment).

Annex a (informative). OKP codes on copper cathodes

APPENDIX A
(reference)

Table A. 1

(Changed edition, Rev. N 1)

The electronic text of the document
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Revision of the document including
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