GB/T 17879-1999
Gears--Surface temper etch inspection after grinding (English Version)
- Standard No.
- GB/T 17879-1999
- Language
- Chinese, Available in English version
- Release Date
- 1999
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2023-08
- Replace By
- GB/T 17879-2023
- Latest
- GB/T 17879-2023
- Scope
- This standard specifies standard operating procedures and requirements for the inspection and classification of localized overheating of grinding surfaces by chemical etching. This standard applies to steel parts such as gears, shafts, splines and bearings. This standard does not apply to nitrided parts and stainless steel parts. The chemical etch method is more sensitive to changes in surface hardness than most hardness testing methods. Surface temper etch inspection shall be performed after surface grinding and before further finishing operations.
GB/T 17879-1999 history
- 2023 GB/T 17879-2023 Chemical Etching Examination of Surface Tempering of Gears after Grinding
- 1999 GB/T 17879-1999 Gears--Surface temper etch inspection after grinding
