Title:
TOOL STEEL USED AFTER SURFACE MODIFICATION
Document Type and Number:
Japanese Patent JPH09194992
Kind Code:
A
Abstract:
To increase the adhesion of a film and to improve wear resistance, with respect to a tool having a hard film of ceramics, by applying surface modification by means of PVD or CVD and to improve tool life.
A tool steel, which has an alloy composition consisting of 0.5-2.3% C, 0.4-4.0% Si, ≤1.0% Mn, 3.5-5.5% Cr, 0.5-6.0% V, ≤20% W, ≤15% Mo, and the balance essentially Fe and satisfying W+2Mo=5 to 28% or further containing ≤15% Co, is formed into tool and used after being subjected to surface modification.
Inventors:
NAKAHAMA SHUNSUKE
OZAKI KOZO
MATSUDA YUKINORI
OZAKI KOZO
MATSUDA YUKINORI
Application Number:
JP356996A
Publication Date:
July 29, 1997
Filing Date:
January 12, 1996
Export Citation:
Assignee:
DAIDO STEEL CO LTD
International Classes:
B23B27/14; C22C38/00; C22C38/24; C23C14/06; C23C16/00; (IPC1-7): C22C38/00; C22C38/00; C22C38/24
Attorney, Agent or Firm:
Sou Suga