Title:
焼入方法
Document Type and Number:
Japanese Patent JP6630577
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a quenching method and a quenching device capable of easily forming quench hardened layers mutually separated to thickness direction on both the sides of a thin part.SOLUTION: Provided is a quenching method and a quenching device 20 for heating a thin part as a quenching object whose whole is heated-up by performing short time heating in such a manner that heating coils are confronted with either the inside face or the outside face, including: an inner circumferential coil 21 confronted with the inner circumferential face 11; and an outer circumferential coil 22 connected to the inner circumferential coil 21 and confronted with the outer circumferential face 12, and by performing a heating step where heating is simultaneously performed to both the sides via a region less than a quenching temperature to heat both the sides to a quenching temperature or higher and a rapid cooling step where rapid cooling is performed, quench hardened layers 14 are formed on both the sides.SELECTED DRAWING: Figure 3
Inventors:
Hideyuki Sasakawa
Tomoichi Inaba
Keiichi Takeda
Tomoichi Inaba
Keiichi Takeda
Application Number:
JP2016010053A
Publication Date:
January 15, 2020
Filing Date:
January 21, 2016
Export Citation:
Assignee:
Neturen Co., Ltd.
International Classes:
C21D1/10; C21D1/62; C21D9/32; C21D9/40; H05B6/10
Domestic Patent References:
| JP2008179870A | ||||
| JP6179920A |
Attorney, Agent or Firm:
Patent Business Corporation Koei Patent Office