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3. Defectology wire or bars for springs
The sources of steel defects that can lead to spring rejects are related to :
steel selection ;
-
surface quality :
surface defects resulting from steelmaking (decarburization, local heterogeneity of solidification or inclusion),
rolling (faulty tooling, trimming, imperfect descaling),
drawing, where applicable (scale not removed, tooling, etc.).
The most common sources are described here.
3.1 Risks associated with spring steel grades
A quick overview of the nuances reflects the experience of the nationals (table
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Defectology wire or bars for springs
Bibliography
References
Standardization
- Calculation of helical compression springs. - EN 13906-1 -
- définit la décarburation et spécifie trois méthodes de mesurage de la profondeur de décarburation des aciers non alliés et faiblement alliés. - ISO 3887 - 2002
- Wrought steels – Macroscopic methods for determining the content of non-metallic inclusions. - ISO 3763 - 1976
- Steels – Determining the content of non-metallic inclusions – Micrographic...
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