Cemented carbide with binder phase enriched surface zone

Details Cemented carbide with binder phase enriched surface zone Cemented carbide with binder phase enriched surface zone

1996-03-14

1998-03-17

Mai, Ngoclan

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428697, 428698, 428699, 75236, 75238, 75242, 419 11, 419 15, 419 26, 419 32, 419 38, 419 57, 51307, 51309, 51295, B22F 300

Patent

active

057298238

ABSTRACT:
The present invention relates to a cemented carbide insert, comprising a cemented carbide substrate and a coating. The substrate contains WC and cubic carbonitride phase in a binder phase based of Co and/or Ni and has a binder phase enriched surface zone essentially free of cubic phase. The binder phase enriched surface zone prevails over the edge. As a result, an insert according to the invention has improved edge toughness and resistance against plastic deformation and is particularly useful for machining of sticky work piece materials such as stainless steel.

REFERENCES:
patent: 4277283 (1981-07-01), Tobioka et al.
patent: 4497874 (1985-02-01), Hale
patent: 4548786 (1985-10-01), Yohe
patent: 4610931 (1986-09-01), Nemeth et al.
patent: 4830930 (1989-05-01), Taniguchi et al.
patent: 5266388 (1993-11-01), Anakkavur et al.
patent: 5451469 (1995-09-01), Gustafson et al.
patent: 5484468 (1996-01-01), Ostlund et al.
Patent Abstracts of Japan, vol. 18, No. 666 (M-1724), 15 Dec. 1994 & JP 06 262307 A (Mitsubishi Materials Corp.), 20 Sep. 1994.

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