Title:
QUENCHING METHOD AND RESTRAINT QUENCHING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/248549
Kind Code:
A1
Abstract:
The quenching method is for workpieces that include lace and are provided with a workpiece through-hole. The quenching method has a step that prepares a press quenching device capable of switching between a restraint state in which the workpiece is restrained and a non-restraint state in which the workpiece is not restrained, a step that places a plurality of heated workpieces in the press quenching device which is in a non-restraint state, a step that restrains a part of the workpieces to be restrained by the press quenching device by switching the press quenching device from a non-restraint state to a restraint state, and a step that cools the restrained workpieces.
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Inventors:
KEMMOCHI NAOTO (JP)
HAGIWARA NOBUYUKI (JP)
HAGIWARA NOBUYUKI (JP)
Application Number:
PCT/JP2023/008626
Publication Date:
December 28, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
C21D9/00; C21D1/18; C21D1/673; C21D9/40
Foreign References:
| CN106755818A | 2017-05-31 | |||
| JPS59129718A | 1984-07-26 | |||
| JP2006200019A | 2006-08-03 | |||
| CN101597672A | 2009-12-09 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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