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GB/T 32256-2015Steel forgings for rings for reduction gears—General specification (English PDF)

钢质减速齿环锻件通用技术条件

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 10, 2015

Implementation date

July 1, 2016

Scope

GB/T 32256-2015 is the English-translated version of 钢质减速齿环锻件通用技术条件.

GB/T 32256-2015 is the Chinese standard "Steel forgings for rings for reduction gears—General specification".

Its scope clause reads: This standard specifies the reduction gear ring Carbon and Alloy Steel Forgings (hereinafter referred to as "forging") ordering information and general requirements, materials and Manufacturing, chemical composition, mechanical properties, quality certification, product identification, rejection, etc. This standard applies to normalized and tempered by quenching and tempering process of deceleration gear ring with, welding carbon steel and alloy steel forgings.

Its clauses include terms and definitions; ordering information and general requirements; materials and manufacturing.

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Document preview — GB/T 32256-2015

National Standard of the People's Republic of China

ICS: 77.140.85
Classification: J 32

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and definitions
5 materials and manufacturing
6 chemical composition
7 3 Mechanical Properties
8 quality certificate
10 declined
Appendix A (normative) Additional requirements

1 Scope

This standard specifies the reduction gear ring Carbon and Alloy Steel Forgings (hereinafter referred to as "forging") ordering information and general requirements, materials and

Manufacturing, chemical composition, mechanical properties, quality certification, product identification, rejection, etc.

This standard applies to normalized and tempered by quenching and tempering process of deceleration gear ring with, welding carbon steel and alloy steel forgings.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 8541 Forging term (Terminologyofforgingandstamping)

ASTMA275/Standard Practice (A275M magnetic particle inspection of steel forgings Testmethodformagneticparticleex- aminationofsteelforgings)

Standard Test Methods and Definitions for Mechanical Testing of Steel Products ASTMA370 (Testmethodsanddefinitionsformechan- icaltestingofsteelproducts)

ASTMA388/A388M steel forgings Standard Practice for Ultrasonic Inspection (Practiceforultrasonicexaminationof heavysteelforgings)

ASTMA788 Steel Forgings Standard Specification for General Requirements (Specificationforsteelforgings, generalrequire- ments)

3 Terms and Definitions

Terms and definitions GB/T 8541 defined apply to this document.

4 ordering information and general requirements

4.1

Ordering information should be required ASTMA788 implementation. In addition, the acquirer shall be specified in the order required by the contract and sub-grade material

Class and the necessary additional requirements, see Appendix A.

4.2

standard material used shall comply with the provisions of ASTMA788.

5 materials and manufacturing

5.1 Melting

Smelting process should be consistent with the provisions of ASTMA788, wherein the vacuum degassing process shall comply with the provisions of Appendix A of A.7.

5.2 raffinate

Should be fully clean up residue, in order to ensure the smooth flow of ingot casting process and avoid segregation.

5.3 Forging

Thermodynamic properties of forgings shall comply with the requirements of ASTMA788.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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