Cutting insert of sintered hard alloy

Details Cutting insert of sintered hard alloy Cutting insert of sintered hard alloy

1990-11-14

1992-05-05

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75232, 75234, 75235, 75236, 75237, 75238, 75239, 75240, 75241, 75242, 75244, 419 13, 419 14, 419 15, 419 16, 419 17, 419 18, 419 19, 419 32, 419 38, 419 39, C22C 2912, C22C 2916, B22F 312

Patent

active

051103494

ABSTRACT:
A cutting insert of a sintered carbonitride alloy and with a complicated geometry, the insert having improved efficiency. This is obtained by giving the powder non-uniform compaction during pressing of the powder into a press-body so that the ultimate working edges will have a higher relative density than the surrounding, more "supporting" material in the press-body. By these means are often obtained surface defects in the form of cracks because of dissolved strains during the sintering.

REFERENCES:
patent: 4935057 (1990-06-01), Yoshimura et al.
patent: 4956012 (1990-09-01), Jacobs et al.

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