ISO 17638:2016
Non-destructive testing of welds — Magnetic particle testing
ISO 17638:2016 specifies techniques for detection of surface imperfections in welds in ferromagnetic materials, including the heat affected zones, by means of magnetic particle testing. The techniques are suitable for most welding processes and joint configurations. Variations in the basic techniques that will provide a higher or lower test sensitivity are described in Annex A.
ISO 17638:2016 does not specify acceptance levels of the indications. Further information on acceptance levels for indications may be found in ISO 23278 or in product or application standards.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Safety precautions
5 General
5.1 Information required prior to testing
5.2 Additional pre-test information
5.3 Personnel qualification
5.4 Surface conditions and preparation
5.5 Magnetizing
5.5.1 Magnetizing equipment
5.5.2 Verification of magnetization
5.6 Application techniques
5.6.1 Field directions and testing area
5.6.2 Typical magnetic testing techniques
5.7 Detection media
5.7.1 General
5.7.2 Verification of detection media performance
5.8 Viewing conditions
5.9 Application of detection media
5.10 Overall performance test
5.11 False indications
5.12 Recording of indications
5.13 Demagnetization
5.14 Test report
Annex A (informative) Variables affecting the sensitivity of magnetic particle testing
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Safety precautions
5 General
5.1 Information required prior to testing
5.2 Additional pre-test information
5.3 Personnel qualification
5.4 Surface conditions and preparation
5.5 Magnetizing
5.5.1 Magnetizing equipment
5.5.2 Verification of magnetization
5.6 Application techniques
5.6.1 Field directions and testing area
5.6.2 Typical magnetic testing techniques
5.7 Detection media
5.7.1 General
5.7.2 Verification of detection media performance
5.8 Viewing conditions
5.9 Application of detection media
5.10 Overall performance test
5.11 False indications
5.12 Recording of indications
5.13 Demagnetization
5.14 Test report
Annex A (informative) Variables affecting the sensitivity of magnetic particle testing
Bibliography