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GMW17086
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GMW17086 1st Edition, June 1, 2014 Temper Etch Inspection for Grinder Burn
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Description / Abstract:
Introduction
Note: Nothing in this standard supercedes applicable laws and regulations.
Note: In the event of conflict between the English and domestic language, the English language shall take precedence.
Purpose. This standard establishes requirements and tests for performing temper etch inspection of post ground steel parts which are heat treated above a hardness of 40 Rockwell Hardness, Scale C (HRC) or equivalent.
Applicability. This test involves the use of corrosive material to etch the surface of finished machined part(s) to determine if heat has been introduced into the component by machining, grinding, or other means, which will adversely affect the required properties of the component. This method allows for detection of localized overheating and is more sensitive to changes than are surface hardness testing methods.
Remarks. This test method is to be used as a basis for the tempered etch inspection process. Individuals may need to slightly alter or modify the process to accurately obtain results. The most common practices are presented here as well as some visual standards. Visual standards specifically developed for individual products may be required by those testing the parts.
Note: Nothing in this standard supercedes applicable laws and regulations.
Note: In the event of conflict between the English and domestic language, the English language shall take precedence.
Purpose. This standard establishes requirements and tests for performing temper etch inspection of post ground steel parts which are heat treated above a hardness of 40 Rockwell Hardness, Scale C (HRC) or equivalent.
Applicability. This test involves the use of corrosive material to etch the surface of finished machined part(s) to determine if heat has been introduced into the component by machining, grinding, or other means, which will adversely affect the required properties of the component. This method allows for detection of localized overheating and is more sensitive to changes than are surface hardness testing methods.
Remarks. This test method is to be used as a basis for the tempered etch inspection process. Individuals may need to slightly alter or modify the process to accurately obtain results. The most common practices are presented here as well as some visual standards. Visual standards specifically developed for individual products may be required by those testing the parts.