Patent ID: 6387151
Filing Date: 2002-05-14
Classification: B22F,B24D,C22C

Abstract:
In a method of manufacturing diamond tools comprising hot sintering a mixture of diamonds and a binder material, the improvement comprising using a pre-alloyed powder as a binder material, whereinthe powder has an average particle size of less than 8 &mgr;m as measured with the Fisher Sub Sieve Sizer and a loss of mass by reduction in hydrogen of less than 3% as measured according to the standard ISO 4491-2:1989, and the powder contains, in % by weight, 10-80% of iron, up to 40% of cobalt, up to 60% of nickel and up to 15% of M, wherein M is present, at least partially, in an oxidized state and represents one or more of the elements Mn, Cr, V, Al, Mo and Ti, the other components in the powder consisting of unavoidable impurities.