Patent ID: RE40785

Claim:
A method of manufacturing a cemented-carbide powder, comprising the steps of: (i) coating a hard constituent powder comprising WC with a coating selected from the group consisting of Cr and Cr+Co to form a coated hard constituent powder; (ii) wet-mixing, without milling, the coated WC-powder with binder metal and pressing agent, to form a wet-mixed powder; and (iii) drying said wet-mixed powder to form a dried cemented carbide powder ; ( iv ) pressing the dried cemented carbide powder to form a shaped body; and ( v ) sintering the shaped body, wherein the dried cemented carbide powder has a CW - ratio of 0 . 8 to 1 . 0 , where the CW - ratio is defined as CW - ratio=M s /( wt. % Co* 0 . 0161 ) where M s is the saturation magnetization of the sintered cemented carbide body in hAm 2 /kg and wt % Co is the weight percentage of Co in the cemented carbide .