GOST 1320-74

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  ГОСТ 1320-74

GOST 1320−74 (ISO 4383−91) Babbit tin and lead. Technical specifications (with Changes N 1−7)

GOST 1320−74
(ISO 4383−91)

Group W51

INTERSTATE STANDARD

BABBIT TIN AND LEAD

Specifications

Tin and lead babbits.
Specifications

GST 17 2400

Date of introduction 1975−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR

DEVELOPERS

Z. Y. Kamenetsky (head); A. I. Dautova, N. In. Jour, sci. tech. Sciences (head of subject); A. I. Elin

2. APPROVED AND promulgated by the Decree of the State Committee of standards of Ministerial Council of the USSR from 12.04.74 N 880

Change No. 7 adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 12, 21.11.97)

Was the Technical Secretariat of MGS N 2674

The adoption of the changes voted:

3. REPLACE GOST 1320−55

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

5. Limitation of actions taken by Protocol No. 4−93 of the Interstate Council for standardization, Metrology and certification (ICS 4−94)

6. EDITION (September 2001), with Changes N 1, 2, 3, 4, 5, 6, 7, approved in October 1977, September 1979, June 1984, October 1985, September 1987, June 1989, March 1998 (IUS 3−78, 10−79, 10−84, 1−86, 12−87, 11−89, 6−98)


This standard applies to tin and lead babbits in pigs used to fill the bearings and other parts.

Allowed manufacturing babbit ISO 4383 in terms of technical requirements for multilayer materials for thin-walled plain bearings, for tin and lead based, is given in Appendix 3.

(Changed edition, Rev. N 5, 6, 7).

1. BRAND

1.1. Depending on the chemical composition establishes the following brands of tin and lead babbits: B88, B83, B83S, B16, bn, and BS6.

2. TECHNICAL REQUIREMENTS

2.1. Tin and lead babbits in pigs must be manufactured in accordance with the requirements of this standard technological instruction, duly approved.

(Changed edition, Rev. N 6).

2.1. The chemical composition of tin and lead babbits should correspond specified in the table.

Continued

Notes:

1. At the request of the consumer in the brand babbit B88 permitted to replace components, cadmium free and Nickel on the tin and increase of lead impurities to 0.35%.

2. At the request of the consumer in the brand babbit B83 mass fraction of impurities of lead may be increased to 0.5%.

3. At the request of the consumer in the babbit brand B83S mass fraction of lead can be increased to 3.0%.


(Changed edition, Rev. N 1, 3, 5, 6).

2.2. Babbit needs to be made of primary and secondary metals in form of ingots, weighing not more than 22 kg.

2.3. Form ingots of babbit B88 brands, B83 and B83S is specified on the devil.1, brands B16, Б06 and bn — on features.2. Dimensions to hell.1 and 2 provided for the manufacture of molds. Permissible deviations on dimensions of the molds must comply with a 10-mu accuracy class according to GOST 26645.

Damn.1

Damn.2

By agreement with the consumer allowed the production of ingots of other shapes.

(Changed edition, Rev. N 2, 3, 5, 6).

2.4. The ingots of babbit surface should be clean, free of slag contamination. Allowed color of a tint.

(Changed edition, Rev. N 3).

2.5. The kink pigs babbit should be homogeneous, without any oxides, slag and other foreign inclusions.

2.6. The appointment of and the conditions of application given in Annex 1.

2.7. Physical and mechanical properties are given in Appendix 2.

2A. SAFETY REQUIREMENTS

2A.1. The use of babbit may be accompanied by release of toxic substances: antimony and lead. In accordance with GOST 12.1.007 lead refers to the substances of the I class of danger, the antimony — II class of danger.

2A.2. Effect of lead on the human body is the nervous system, blood vessels, Antimony irritates mucous membranes of the respiratory and digestive tract, of the skin.

2A.3. Maximum allowable concentration of lead in air of working zone according to GOST 12.1.005 — 0,01/0,005 mg/m, antimony — 0,5/0,2 mg/m.

2A.4. The concentration of harmful substances in the air of working zone is determined according to the method conforming to the requirements of GOST 12.1.016.

2A.5. Work with babbit, you must perform a respirator type «Petal» according to GOST 12.4.028, dry clothing: costumes according to GOST 12.4.044 or GOST 12.4.045, leather shoes by GOST 12.4.032 or felt boots in GOST 12.4.050 and individual protection equipment: gloves according to GOST 12.4.010, protective flaps according to GOST 12.4.023.

2A.3−2A.5. (Changed edition, Rev. N 6).

2A.6. Loading and unloading should be carried out according to GOST 12.3.009.

(Added, Rev. N 3).

3. ACCEPTANCE RULES

3.1. Babbit attended parties. The party should consist of babbit one brand and one bottoms and must be made a document about quality that contains:

trademark or the name and trademark of manufacturer;

the name of the product and its brand;

batch number;

the net weight in kilograms;

the results of the analysis;

the number of pigs;

the date of manufacture;

the designation of this standard.

3.2. External control surfaces subjected every ingot of the party.

3.1; 3.2. (Changed edition, Rev. N 3).

3.3. Sizes of pigs are not controlled.

(Changed edition, Rev. N 2).

3.4. To control the chemical composition of babbit select the three pig of the party.

Allowed sampling from liquid metal.

(Changed edition, Rev. N 3).

3.5. To control the homogeneity of the babbit in the break from each party select two pig.

3.6. If unsatisfactory validation results of the chemical composition and homogeneity of the Babbitt in the fracture of a second check for the doubled sample taken from the same batch.

The results of repeated tests apply to the entire party.

(Changed edition, Rev. N 3).

4. TEST METHODS

4.1. Control of the surface of ingots produced by the naked eye.

4.2. A sample for determining the chemical composition of babbit on the manufacturer taken from molten metal by casting three pigs: at the beginning, middle and end of melting.

4.3. The overall sample taken by sawing or milling, each selected for the analysis of pig in three places: in the middle and at a distance of 0.20 of the length of the pig from its ends.

The pig on the cross section milled or sawn perpendicular to the length to the middle.

The sample for spectral analysis are taken from the liquid metal in the form of molded rods diameter 8 mm, length 75 mm. a Sample for x-ray analysis taken from liquid metal in form of ingots having the shape of a truncated cone with diameters of 42 and 60 mm and height 15 mm.

(Changed edition, Rev. N 3).

4.4. Test to determine the uniformity of the distribution of copper and antimony babbits in all grades and cadmium free and Nickel babbit B88 brands and bn taken from the sawdust obtained from each pig sampled from the party, and cleaned the magnet from mechanical impurities of iron.

(Changed edition, Rev. N 3, 6).

4.5. A sample for control of the chemical composition a mass of about 200 g were taken by kvantovanie mixed from three pigs sawdust.

4.6. Determination of the chemical composition of should be carried out according to GOST 21877.0 — GOST 21877.11.

Allowed determination of the chemical composition by other methods, certified according to GOST 8.010*. The differences in the evaluation of the chemical composition analysis is carried out according to GOST 21877.0 — 21877.2 GOST; GOST 21877.3 in sect.2; 21877.4 GOST; GOST 21877.5; GOST 21877.6 in sect.3; 21877.7 GOST; GOST 21877.8 in sect.2; GOST 21877.9 in sect.2; GOST 21877.10 in sect.2; GOST 21877.11.
________________
* On the territory of the Russian Federation GOST R 8.563−96.

(Changed edition, Rev. N 7).

4.7. To check the homogeneity of the babbit in the kink pig madrobot or cut closer to the middle of the maximum height the pig and then break. Uniformity in the fracture is determined visually without the use of magnifying tools.

(Changed edition, Rev. N 3).

5. MARKING, TRANSPORTATION AND STORAGE

5.1. For each pig the babbit is applied to the melting room. On each lobe of Babbitt cast or emboss the brand of babbit and trademark of the manufacturer.

(Changed edition, Rev. N 3).

5.2. Pig of transporterowych in universal containers or formed into transport packets according to GOST 26663.

Packages from brands ingots of babbit B16, bn, BS6 form on wooden pallets size 500х1200 mm or pallets P2 size 800x1200 mm according to GOST 9078, or without pallet. Packages from ingots of babbit B88 brands, B83, B83S form the roll in to four ingots of babbit. Packages tied with steel tape of size not less than 0,3х30 mm according to GOST 3560, the bonding of the ribbon to the castle. Allowed to tie the packages of wire with a diameter of 6−8 mm according to GOST 3282 with the bond twist.

Overall dimensions of the packages from ingots of babbit B88 brands, B83, B83S — no more 800х420х750 mm, grades of babbit B16, bn, BS6 — no more 1200х500х700 mm. gross Weight of package must not exceed 1350 kg.

(Changed edition, Rev. N 4, 6, 7).

5.2. Transport marking under GOST 14192.

(Added, Rev. N 3).

5.3. Babbit transporterowych by all kinds of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this type, and conditions of loading and fastening of cargoes, approved by the Ministry of Railways of the USSR.

(Changed edition, Rev. N 3, 4).

5.4. Babbit should be stored in closed, ventilated rooms.

5.5. (Deleted, Rev. N 6).

6. MANUFACTURER’S WARRANTY

6.1. (Deleted, Rev. N 3).

6.2. The manufacturer guarantees the conformity of the babbit to the requirements of this standard, subject to consumer storage conditions.

(Changed edition, Rev. N 5).

6.3. Warranty period shall be one year from the time of manufacture of babbit.

ANNEX 1 (recommended). CONDITIONS OF USE OF AND ESTIMATE APPOINTMENT

ANNEX 1
Recommended

(Changed edition, Rev. N 6).

ANNEX 2 (informative). PHYSICAL AND MECHANICAL PROPERTIES OF TIN AND LEAD BABBITS

ANNEX 2
Reference

APPENDIX 3 (recommended). ISO 4383−91 BEARINGS. MULTILAYER MATERIALS FOR THIN-WALLED PLAIN BEARINGS

APPENDIX 3
Recommended

1. Scope

ISO 4383 specifies requirements for multilayer materials for thin-walled plain bearings.

The multilayered material consists of a steel bearing insert, bearing layer on tin and lead-based (cast, sintered, rolled). Possible the top layer, applied by electrolytic deposition.

2. Requirements

2.1. Chemical composition

2.1.1. Steel liner

Chemical composition of steel bearings is determined by agreement between the manufacturer and the consumer. Usually use low carbon steel.

2.1.2. The bearing layer

Chemical composition of bearing alloys shall be as given in table 1.


Table 1 — Chemical composition of bearing alloys

Percentage

2.1.3. The top layer

The top layer, the chemical composition of which is given in table 2, is applied to the bearing layer. The thickness of the upper layer or any additional layer between the bearing layer and the upper layer is determined by agreement between the manufacturer and the consumer.


Table 2 — Chemical composition of the upper layer

Percentage

2.2. Reference guide to the selection of materials and their properties

Guidance for the selection of the hardness of the bearing alloy and its use are shown in tables 3 and 4.


Table 3 — reference guide to choosing the hardness of the bearing material

Note — the Hardness can be increased by knurling the surface.


Table 4 — reference guide on the use of bearing materials and the choice of hardness coupled with the bearing parts (shaft)

APPENDIX 3. (Added, Rev. N 7).