Title:
【発明の名称】少なくとも2周波数による誘導加熱による回転対称部品の表面焼入れ装置
Document Type and Number:
Japanese Patent JPH05507117
Kind Code:
A
Abstract:
The invention relates to the surface hardening of rotation symmetrical parts of a complex shape, e.g. of gears, by inductive heating by which a common coil (11) is supplied with two different frequencies from two converters (6, 8) having individually controllable power. A series resonant circuit is inserted for decoupling relative to the lower frequency. The converter (8) for the lower frequency is decoupled relative to the high frequency by the always present stray inductivity and by an inserted discrete inductance (9).
Inventors:
Marche goal, life
Schwenk, Wolfgang
Schwenk, Wolfgang
Application Number:
JP50703691A
Publication Date:
October 14, 1993
Filing Date:
April 05, 1991
Export Citation:
Assignee:
Elba Induction AS
International Classes:
C21D1/10; C21D9/32; H05B6/02; H05B6/10; H05B6/38; (IPC1-7): C21D1/10; C21D1/10; C21D9/32; H05B6/38
Attorney, Agent or Firm:
Yamato Tsutsui