Defectology wire or bars for springs
Automobile steel suspension springs

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Defectology wire or bars for springs


Automobile steel suspension springs

Author : Jeanne CHONÉ

Publication date: January 10, 2007 | Lire en français

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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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