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BS ISO 14104:2017

Current
Current

The latest, up-to-date edition.

Gears. Surface temper etch inspection after grinding, chemical method
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

04-25-2017

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus
5 Reagents
6 Procedure
7 Inspection criteria
8 Temper etch discoloration removal
9 Rework of surface-tempered parts
10 Operator qualification
11 Maintenance and control
12 Safety and environmental precautions
13 Specifications and documentation
Bibliography

Defines procedures and requirements for the detection and classification of localized overheating on ground surfaces by chemical etch methods.

This document specifies procedures and requirements for the detection and classification of localized overheating on ground surfaces by chemical etch methods.

The process described in this document is typically used on ground surfaces; however, it is also useful for the detection of surface anomalies that result from post-heat treatment machining such as hard turning, milling and edge breaking (deburring) processes. Surface metallurgical anomalies caused by carburization or decarburization are also readily detectable with this process.

Some methods which have been used in the past are no longer recommended. Specifications are intended to be changed to use the methods in this document. These etching methods are more sensitive to changes in surface hardness than most hardness testing methods.

This document applies to steel parts such as gears, shafts, splines and bearings. It is not applicable to nitrided parts and stainless steels.

NOTE This process, although at times called “nital etch??, is not intended to be confused with other processes also known as “nital etch??.

The surface temper etch procedure is performed after grinding and before additional finishing operations such as superfinishing, shot peening and honing.

Committee
MCE/5
DevelopmentNote
Supersedes BS 7862(1996) & 13/30269192 DC. (06/2014) Supersedes 16/30335341 DC. (04/2017)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 14104:2017 Identical

ASNT SNT TC 1A : 2016 TOPICAL OUTLINES FOR QUALIFICATION OF NONDESTRUCTIVE TESTING PERSONNEL
ISO 9712:2012 Non-destructive testing Qualification and certification of NDT personnel
SAE AMS 2759/9 : 2009 HYDROGEN EMBRITTLEMENT RELIEF (BAKING) OF STEEL PARTS

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Hardcopy - English
PDF - English
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