Durable, wear-resistant punches and dies

Details Durable, wear-resistant punches and dies Durable, wear-resistant punches and dies

B - Operations, Transporting

21

D

B21D 37/01 (2006.01) B21D 28/14 (2006.01) B22F 5/00 (2006.01) C22C 1/04 (2006.01) C22C 38/22 (2006.01) C22C 38/36 (2006.01)

Patent

CA 2509066

Tough, wear-resistant dies derived from cold work steel formed by powder metallurgy processing and containing not greater than about 4% of tungsten. The dies desirably contain not greater than about 4% molybdenum by weight and at least about 5% chromium by weight. Disclosed also is a punch and die combination, the die being derived from cold work steel formed by powder metallurgy processing and containing not greater than about 4% of tungsten. The punch, which may also be derived from cold work steel formed by powder metallurgy processing and containing less than about 4% by weight of tungsten, may have a formula different from that of the die. A punching method is also disclosed.

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