Title:
【発明の名称】焼結されたままの圧印加工方法
Document Type and Number:
Japanese Patent JP2919073
Kind Code:
B2
Abstract:
PCT No. PCT/CA92/00555 Sec. 371 Date Aug. 25, 1994 Sec. 102(e) Date Aug. 25, 1994 PCT Filed Dec. 21, 1992 PCT Pub. No. WO94/14991 PCT Pub. Date Jul. 7, 1994.A process of coining sintered articles of powder metal comprising: blending carbon, ferro manganese, and lubricant with compressible elemental iron powder, pressing the blended mixture to form the articles, high temperature sintering of the articles in a reducing atmosphere and then coining the sintered articles to final shape so as to narrow the tolerance variability of coined articles and substantially eliminate secondary operations.
Inventors:
JOONZU PIITAA
ROOKOTSUKU ROJAA
ROOKOTSUKU ROJAA
Application Number:
JP51461994A
Publication Date:
July 12, 1999
Filing Date:
December 21, 1992
Export Citation:
Assignee:
SUTATSUKUHOORU LTD
International Classes:
B22F3/10; B22F5/00; C22C33/02; C22C38/00; C22C38/22; (IPC1-7): C22C33/02; B22F3/10
Domestic Patent References:
| JP58210147A | ||||
| JP55107756A | ||||
| JP61231129A |
Other References:
【文献】「第3版 鉄鋼便覧 第▲V▼巻 鋳造・鍛造・粉末治金」第485頁,19・2・1項(昭和57年10月1日、丸善(株)発行)
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)