Title:
METHOD FOR HIGH-FREQUENCY INDUCTION HARDENING OF PART WITH END SURFACE TO BE HARDENED
Document Type and Number:
Japanese Patent JP2013209712
Kind Code:
A
Abstract:
To perform high-frequency induction hardening to the end surface of a machine part such as a clutch hub while preventing occurrence of stress by a method free from restrictions on practice.
Hardening of an end surface of a machine part, where the administration of the inside and outside diameters is required, is performed through a first step of heating one end surface of the machine part at a surface temperature of 400°C-700°C and cooling it, and a second step of high-frequency induction heating the other end surface being the side opposite to the end surface of the machine part heated in the first step.
Inventors:
SATO MAKOTO
Application Number:
JP2012080836A
Publication Date:
October 10, 2013
Filing Date:
March 30, 2012
Export Citation:
Assignee:
SUMITOMO ELECTRIC SINTERED ALY
International Classes:
C21D9/32; C21D1/10; C21D1/42; C22C38/00; C22C38/16
Domestic Patent References:
| JP2006291233A | 2006-10-26 | |||
| JP2007039725A | 2007-02-15 |
Attorney, Agent or Firm:
Bunji Kamada
Higashio Masahiro
Takayoshi Tagawa
Higashio Masahiro
Takayoshi Tagawa
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