Title:
流動層炉を用いた部分熱処理による硬さ勾配を持った金型の製造方法
Document Type and Number:
Japanese Patent JP4200486
Kind Code:
B2
Inventors:
Norio Kainuma
Akedagawa Shinya
Akedagawa Shinya
Application Number:
JP2003292084A
Publication Date:
December 24, 2008
Filing Date:
August 12, 2003
Export Citation:
Assignee:
Asia Engineering Co., Ltd.
International Classes:
B21D37/20; C21D1/53; C21D6/00; C21D9/00
Domestic Patent References:
| JP6285608A | ||||
| JP2003129131A | ||||
| JP61190015A |
Attorney, Agent or Firm:
Kunio Nakagawa