Title:
SINTERED HARD ALLOY DIE FOR HOT OR WARM FORGING
Document Type and Number:
Japanese Patent JPH06158114
Kind Code:
A
Abstract:
PURPOSE: To obtain a die which is not cracked in hot or warm forging and excellent in resistance to wear and surface roughening by using a WC-base sintered hard alloy having specified contents of Co and Cr.
CONSTITUTION: The binder phase forming compact is a hard metal contg. 5-25wt.% Co, 0.3-3.0% Cr and the balance WC as the dispersed phase forming component with inevitable impurities, and a sintered hard alloy for hot or warm forging is formed from the hard metal. The WC as the dispersed phase forming component is preferably dispersed as the fine particles having 1-5μm average diameter. Consequently, the service life of the die is prolonged when used in hot or warm forging.
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| JPS6021140 | HOT FORGING TOOL |
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Inventors:
YAMASHITA NAOSHI
KODERA NORIHIKO
TAJIMA ITSURO
SHINOHARA KOJI
KODERA NORIHIKO
TAJIMA ITSURO
SHINOHARA KOJI
Application Number:
JP34129692A
Publication Date:
June 07, 1994
Filing Date:
November 27, 1992
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B21J13/02; B22F5/00; C01B32/949; C22C29/08; (IPC1-7): B22F5/00; B21J13/02; C01B31/34; C22C29/08
Attorney, Agent or Firm:
Kazuo Tomita (1 person outside)