Title:
The shearing method between surface granule-ized heat, and a surface granule-ized heat shearing processing section article
Document Type and Number:
Japanese Patent JP6103047
Kind Code:
B2
Abstract:
Provided is a surface layer grain refining hot-shearing method including: heating and keeping a steel sheet in a temperature range of from Ac3 to 1400°C to austenitize the steel sheet; subsequently shearing the steel sheet in a state in which the steel sheet is placed on a die; and quenching by rapidly cooling the sheared steel sheet, wherein a start temperature of the shearing is set to be a temperature (°C) obtained by adding a temperature of from 30°C to 140°C to a previously measured Ar3 of the steel sheet.
Inventors:
Takashi Matsuno
Yoshihito Sekido
Suzuki Kazuki
River Saki Kaoru
Atsushi Seto
Yoshihito Sekido
Suzuki Kazuki
River Saki Kaoru
Atsushi Seto
Application Number:
JP2015515914A
Publication Date:
March 29, 2017
Filing Date:
May 09, 2014
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
B21D28/24; B21D22/20; B21D37/16; C21D1/18; C21D1/673; C21D9/00; C22C38/00; C22C38/32
Domestic Patent References:
| JP2013174004A | ||||
| JP4821939B2 |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office
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