Cemented carbide body used preferably for rock drilling and...

Details Cemented carbide body used preferably for rock drilling and... Cemented carbide body used preferably for rock drilling and...

C - Chemistry, Metallurgy

04

B

57/17, 261/5

C04B 35/56 (2006.01) C22C 29/08 (2006.01) C23C 8/20 (2006.01) C23C 30/00 (2006.01) E21B 10/56 (2006.01)

Patent

CA 1249606

ABSTRACT The present invention relates to cemented carbide bodies preferably for rock drilling and mineral cutting. By having the bodies comprising a core of cemented carbide containing eta-phase surrounded by a surface zone of cemented carbide free of eta-phase and having a low content of cobalt in the surface and a higher content of cobalt next to the eta-phase zone the bodies have obtained an increased strength and life in practical use.

494089

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