HARD METAL BODY WITH HARDNESS GRADIENT, SUCH AS PUNCHING TOOLS

摘要

The present invention relates to for manufacturing main body made of hard alloy, by hard compound A and binder B, wherein powdery A and B, or optionally quasi- tight product is for example containing A and B, it is introduced into container and is compacted with containing A and B, to increase the theoretical maximum density (TMD) that relative density (RD) is higher than 70% to value. The invention further relates to include a collection of hard alloy hard compounds A and binder B, mass ratio: the main body on cross section that B is gradually changed, so as to the region or a T Za (hardness) and an area Zb to the body difference mechanical performance or to the other end (in H. The present invention also relates to use strong tamping technology to produce this body.