Arrangement and process for the inductive hardening of profiled camshafts
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United States of America Patent
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Jun 20, 2000
Grant Date -
N/A
app pub date -
Apr 20, 1998
filing date -
Apr 18, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a device for inductive hardening of profiled camshafts (especially those having valve cams and zero cams) during a hardening operation, the camshaft is surrounded by an inductor and is heated by means of a magnetic field emanating from the inductor. The inductor has several axial members and radial members through which the induction current flows during the hardening operation. Dynamo sheets provided on the axial branches focus the magnetic field in the radial direction. The position and the width of the dynamo sheets is adapted to the surface profile of the camshaft, so that the focusing is aimed at areas with a small diameter.
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