GOST 3778-98

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  ГОСТ 3778-98

GOST 3778−98 Lead. Specifications

GOST 3778−98

Group W51

INTERSTATE STANDARD

LEAD

Specifications

Lead. Specifications

ISS 77.120.60
GST 17 2532

Date of introduction 2001−07−01

Preface

1 DEVELOPED by the Interstate technical Committee for standardization MTK 504 «Zinc, lead», Eastern research mining and metallurgical Institute of nonferrous metals (VNIItsvetmet) of the Republic of Kazakhstan

INTRODUCED by Committee on standardization, Metrology and certification of Ministry of energy, industry and trade of the Republic of Kazakhstan

2 ADOPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 14 dated November 12, 1998)

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 3778−98 introduced directly as state standard of the Russian Federation from July 1, 2001

4 REPLACE GOST 3778−77

5 REISSUE. August 2003

1 Scope

This standard applies to lead in pigs, blocks and ingots.

2 Normative references

The present standard features references to the following standards:

GOST 3.1120−83 unified system of technological documentation. General rules reflection and processing of safety requirements of work in process documentation

GOST 12.3.002−75 System safety standards. The process of production. General safety requirements

GOST 3560−73 package steel Strip. Specifications

GOST 8857−77 Lead. Method of spectral analysis

GOST 14192−96 Marking of cargo

GOST 15846−2002 Products that are sent to the far North regions and equated areas. Packing, marking, transportation and storage

GOST 18477−79 Containers are universal. The types, basic parameters and dimensions

GOST 20580.0−80 Lead. General requirements for methods of chemical analysis

GOST 20580.1−80 Lead. Methods for determination of silver

GOST 20580.2−80 Lead. Methods for determination of copper

GOST 20580.3−80 Lead. Method of determining zinc

GOST 20580.4−80 Lead. Methods for determination of bismuth

GOST 20580.5−80 Lead. Method for the determination of arsenic

GOST 20580.6−80 Lead. Methods for determination of tin

GOST 20580.7−80 Lead. Method for the determination of antimony

GOST 20580.8−80 Lead. Method for determination of iron

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

GOST 22477−77 fastening Means of transportation packages, in covered wagons. General technical requirements

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

GOST 26880.1−86 Lead. Atomic absorption method of analysis

GOST 26880.2−86 Lead. Methods for determination of sodium and potassium

3 General technical requirements

3.1 Lead manufactured in accordance with the requirements of this standard in accordance with technical documentation approved in the established order.

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

OKP codes are given in Appendix A.

3.2.1 In the lead used for the manufacture of alloys and articles in which specified impurities are components of the allowed mass fraction of impurities not to limit, and in agreement with the consumer to increase their rate to the level of the mass fraction in the respective alloy, and lead free stamp set for the rest of the impurities. Regulated in table 1 mass fraction of lead should be reduced by the amount of the alloy components.

3.3 Lead free made in the form of ingots with a flat base or vzaimoponimanii shapes, ingots, and blocks.

Produce ingots weighing 30 to 40 kg, blocks 1, 2 and 3 T. of Acceptable deviation mass units ±10%.

The shape and size of the blocks and ingots, and bars set in agreement with the consumer.

3.4 the Surface of ingots, blocks, and ingots of lead must be free of powdery oxides and impurities (slag, brick, etc.). Allowed color of a tint, white coating and shrinkage. Ingots, blocks, and ingots should not be layered.

3.5 Each pig, block and ingot of lead must be marked with the trademark of the manufacturer and batch number.

3.6 To indicate the brand of lead ingots, ingots, and blocks on the end face applied with indelible paint one stripe of the following colors:

red — for the grade S0;

green — for the brand S1S;

— white — brand S2S;

— yellow for brand S2;

blue — for brand C3;

brown — brand S3S.

Ingots, blocks, and ingots of lead of C1 grade paint is not marked.

Each package should be specified: the number of pigs in the package sequence number of package, net weight.

On each block, and the ingot of lead, for long-term storage, the top surface must be specified the sequence number of a block or ingot net weight.

By agreement with the consumer allowed when forming ingots in packages color-coded to cause only one pig of the top row of the package.

Transport marking under GOST 14192.

Lead, intended for export labeled in accordance with the order of foreign trade enterprises.

Allowed to put on the top surface of package water resistant digital marking by hand.

3.7 Lead ingots transporterowych in universal containers according to GOST 18477 or formed into packets.

Packs of pigs should meet the following requirements:

— number of rows in the package — from 5 to 7;

— the number of pigs in the series — 5 PCs.;

— the number of pigs in the package — from 25 to 35 PCs.;

— weight of package — not more than 1500 kg. To eliminate overloading of the car allowed a reduction in the number of rows of pigs in separate packages.

Packs flat ingots and pigs vzaimoponimanii forms must be bound with a steel packing tape, stretched and fastened in the lock-jaw machines.

The lock feature on the upper base of the package. The upper free end of the strip in the belt is cut at the castle at an angle of 90°. The length of the bottom of the folded end of the tape should not exceed 70 mm. Tape thickness 0.9−1 mm, width 30 mm, a rupture strength not less than 35 kgf/mmaccording to GOST 3560.

Laying schemes and bonds of the pigs of lead in the packages are given in appendices B and C.

Device for fastening packages, in covered wagons must comply with GOST 22477.

4 safety Requirements

Safety requirements when working with lead from the manufacturer and the consumer — technological documentation in accordance with GOST 12.3.002, GOST 3.1120.

5 acceptance Rules

5.1 taking the Lead parties. The party should consist of lead of the same brand and must be issued a document about quality that contains:

is the trademark or name and trademark of manufacturer;

— name of the product and its brand;

— the batch number;

— the weight of the batch and the number of packets, blocks or ingots;

— the results of the analysis;

— date of issue;

— the designation of this standard.

The weight of the batch shall not exceed 500 tons

5.2 To check the mass and chemical composition of lead from each batch selected 2% of pigs, not less than 5 PCs and 10% blocks and ingots, but not less than 3 pieces.

At the factory a sample of lead taken from the liquid metal uniformly in the filling process of the batch of metal in the beginning, middle and end.

Mass fraction of arsenic, tin, antimony, and amounts of magnesium, sodium and calcium in the lead of all brands the manufacturer determines periodically, at least once per month.

Mass fraction of chromium in the lead of stamps C0, intended for the manufacture of minium, the manufacturer determines periodically, at least once in 6 months.

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

5.4 If unsatisfactory test results of at least one of the indicators it is carried out re-testing at twice the sample taken from the same batch. The results of repeated tests spread to the entire party.

6 Methods to control

6.1 To monitor the chemical composition of the selected lead ingots drill drill diameter 10−20 mm. Designated entry and exit of the drill cleaned to a depth of 0.3−0.5 mm. Pig drilled at six points — three on the top and bottom surfaces, with one drilling is carried out in the middle and two on the distance of the diagonal from corner to a depth equal to half the height of a pig.

Allowed to acquire a sample by sawing or milling. Each pig is sawed or milled in three places — in the middle and at equal distances from the middle, approximately the length of the pig.

Surface pigs at the sampling sites cleaned of dirt and oxidation with a wire brush, grinding or scraping to obtain a clean metal surface.

Sampling is carried out dry, without the use of coolants and lubricants, with reasonable speed (to avoid overheating and oxidation).

A sample of blocks and ingots were taken by cutting two opposite diagonal corners for the entire height of a block or ingot.

Shavings and sawdust, taken from all pigs, ingots or blocks, is mixed. The resulting merged sample is ground by shear to the particles size of 3−5 mm, thoroughly mixed and treated with a magnet, then cut kvantovanie to obtain a laboratory sample weighing at least 2 kg Laboratory sample is divided into two equal parts, one of which is passed for analysis, the other stored as a duplicate.

6.2 Sampling from liquid metal is carried out by casting test bars. The shape and weight of the test bars is not regulated. On the manufacturer allowed the joint trial to prepare in the form of cylinders in an amount of not less than three.

Selected joint trial if necessary cut to obtain a sample weighing at least 3 kg.

The laboratory sample is divided into two parts, placed in plastic bags in which to put the labels with the date of sampling, batch number and the names of probatoria. One part of the sample transferred to the analysis, the other stored at the factory for 6 months.

6.3 Analysis of lead is carried out according to GOST 20580.0 — 20580.8 GOST, GOST 26880.1, GOST 26880.2 or GOST 8857.

On the manufacturer is allowed to conduct analyses by other methods, accuracy is not inferior to the standard.

If there is disagreement in assessing the quality of lead chemical composition is determined by GOST 20580.0 — 20580.8 GOST, GOST 26880.1, GOST 26880.2 or GOST 8857.

6.4 Mass fraction of lead is determined by the difference between 100% and the sum of the normalized mass fraction of impurities in%.

6.5 surface Quality of pigs, ingots and blocks of lead checked visually, without the use of magnifying devices.

7 Transportation and storage

7.1 Lead ingots transporterowych by all kinds of transport in covered vehicles in accordance with the rules of transportation of cargoes effective for this transport.

Allowed by agreement between manufacturer and consumer and transport organizations to transport ingots of lead in open vehicles.

7.2 Preparation of lead to marine transportation — according to GOST 26653.

7.3 the Lead in blocks, ingots and containers transporterowych by all kinds of transport.

7.4 Lead, designed for long-term storage, transporterowych only formed in packets, blocks or ingots.

7.5 Vehicle for lead, intended for long storage, must be clean.

7.6 In the far North regions and equated areas lead transporterowych in containers according to GOST 18477 or packages in accordance with the requirements of GOST 15846*.
_______________
* On the territory of the Russian Federation GOST 15846−2002. — Note the manufacturer’s database.

7.7 Transportation of packages — according to GOST 21399.

7.8 the Lead kept under a canopy.

Allowed lead in blocks and ingots to be stored on specially prepared platforms.

8 manufacturer’s Warranty

8.1 the Manufacturer guarantees that the quality of the lead requirements of this standard, under the conditions of transportation and storage prescribed by the standard.

8.2 the Warranty period of storage of lead in blocks and ingots on the open areas:

— with a sulfur dioxide content of 0.22−10 mg/m — 5 years;

— with a sulfur dioxide content of 0.02−0.21 mg/m — 10 years;

— with a sulfur dioxide content of less than 0.02 mg/m — 15.

Annex a (informative). OKP codes

APPENDIX A
(reference)

Table A. 1

ANNEX B (reference). The scheme of placing and fastening vzaimoponimanii pigs of lead in the packages

APPENDIX B
(reference)

_______________
* Dimensions for reference.

1 — packing tape; 2 — lock for fastening.

Figure B. 1

_______________
* Dimensions for reference.

1 — packing tape; 2 — lock for fastening.

Figure B. 2

_______________
* Dimensions for reference.

1 — packing tape; 2 — lock for fastening.

Figure B. 3

ANNEX b (informative). The scheme of installation and fastening of flat ingots of lead in the packages

THE APP
(reference)

________________

* Dimensions for reference.

1 — packing tape; 2 — lock for fastening.

Figure B. 1

_______________
* Dimensions for reference.

1 — packing tape; 2 — lock for fastening.

Figure B. 2

_______________
* Dimensions for reference.

1 — packing tape; 2 — lock for fastening.