Supervision of heat-treated mass-produced parts using non-destructive test methods

A difficult problem for in process inspection of mass parts is supervision of heat treatment results. Verification of features like correct case depth and hardness are of prime importance for meeting the quality and safety of the final product. In view of defects which violate statistical distribution laws, a possible solution is the non-destructive 100% test by using eddy current. The German article was published 1996 in the magazine Härterei-Technische Mitteilungen (HTM) and to date has not lost its relevance.

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