Title:
高周波焼入装置
Document Type and Number:
Japanese Patent JP4396966
Kind Code:
B2
Abstract:
To provide induction hardening equipment which performs quenching of a groove wall on a cylindrical member such as a hub outer ring with a groove formed on its inner periphery, according to a plan without causing quenching crack.
A copper shield member 94 is removably fixed inside a cup-shaped upper center 90 with a bolt 95 etc. The copper shield member 94 has a disk shape and has a thickness almost equal to the distance between the bottom of the cup-shaped upper center 90 to the top of a thin-walled part 38. A rim 94a of the shield member 94 projects downward, faces the inner periphery of about one-third of the upper portion of the thin-walled part 38 and contacts the thin-walled part 38.
COPYRIGHT: (C)2005,JPO&NCIPI
Inventors:
Daiji Ito
Takashi Kono
Atsushi Maki
Takashi Kono
Atsushi Maki
Application Number:
JP2003295351A
Publication Date:
January 13, 2010
Filing Date:
August 19, 2003
Export Citation:
Assignee:
Neturen Co., Ltd.
International Classes:
C21D1/10; H05B6/10; C21D9/40; H05B6/36
Domestic Patent References:
| JP8176651A | ||||
| JP11111436A | ||||
| JP6179920A |
Attorney, Agent or Firm:
Kazuhiko Ichitoku