A kind of pre-alloyed powder for diamond sawing tool

Abstract

The invention discloses prealloyed powder for diamond sawing tools. The prealloyed powder, disclosed by the invention, comprises the following components in percentage by weight: 20-25% of Cu, 5-10% of Co, 1-3% of Ni, 3-6% of Cr, and the rest amount of Fe. As raw materials of carcasses for the diamond sawing tools, the prealloyed powder has the advantages of low oxygen content, fine granularity, uniform and segregation-free components, irregular particle morphology, difficult secondary oxidation, difficult agglomeration and full alloying; and the obtained carcasses are uniform in structure, high in hardness and impact strength, and are good in mechanical control of diamond.

Description

technical field

[0001] The invention relates to the field of powder metallurgy, in particular to a pre-alloyed powder for diamond sawing tools. Background technique

[0002] In the diamond tool industry, the matrix material is generally obtained by mechanically mixing various single-element metal powders (such as iron powder, copper powder, cobalt powder, etc.). Poor, high sintering temperature is required, the composition of the diamond tool matrix obtained by this method is not uniform, and complete alloying cannot be achieved. In order to overcome the above shortcomings and improve the performance of the diamond tool matrix, raw material powder manufacturers began to study pre-alloyed powders The powder is evenly distributed than the mechanically mixed powder, which fundamentally avoids component segregation, makes the matrix structure uniform, and the performance tends to be consistent. At the same time, pre-alloying greatly reduces the activation energy required for the...

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