Title:
【発明の名称】耐欠損性のすぐれた炭窒化チタン基サーメット製切削工具の製造法
Document Type and Number:
Japanese Patent JP2560344
Kind Code:
B2
Abstract:
PURPOSE:To suppress the decomposition of TiCN at the time of sintering and to produce a TiCN-base cermet as a cutting tool material having excellent chipping resistance by subjecting a green compact essentially consisting of TiCN to high-temp. sintering in a specific high-pressure gaseous Ar atmosphere at the time of producing the TiCN-base cermet. CONSTITUTION:TiCN powder having 0.8-2.5mum average grain size is used as an essential component and powder of Co, Ni, etc., as a binder at the time of sintering is mixed with hard powder of TaC, NbC, WC, Mo2C, etc., having the same grain size. The green compact is produced by subjecting the mixture formed in such a manner to press molding. This green compact is sintered at 1,350-1,500 deg.C in the gaseous Ar atmosphere of 2-200atm. The TiCN-base cermet for cutting tools is produced which obviates the decomposition of the TiCN during sintering and the consequent remaining of the pores by the gaseous N2 formed during decomposition and accordingly is free from the deterioration in chipping resistance.
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Inventors:
YOSHIMURA HIRONORI
KOTANI JIRO
KOTANI JIRO
Application Number:
JP23704287A
Publication Date:
December 04, 1996
Filing Date:
September 21, 1987
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B22F3/10; C22C1/05; (IPC1-7): C22C1/05; B22F3/10
Domestic Patent References:
| JP61147823A |
Attorney, Agent or Firm:
Kazuo Tomita (1 person outside)