Manufacture method of diffuse combustion ti-al-cu-sn-ni microporous diamond grinding wheel

Abstract

The invention relates to a manufacturing method of an infiltration combustion Ti-Al-Cu-Sn-Ni micropore diamond grinding wheel. The manufacturing method comprises the following steps of uniformly mixing Al powder with Ti powder, adding diamond powder and mixed powder of Ti and Al to a mold, and guaranteeing diamond particles to be preferentially in contact with the mixed powder of Ti and Al; adding Cu powder, Sn powder and Ni powder, and performing uniform stirring; performing coldpress moulding according to 90-93% of forming density, and guaranteeing certain porosity, wherein after coldpress moulding, the peripheries of the diamond granules are wrapped with some mixed powder of Ti and Al, and an outer layer is wrapped with a leaching material namely Cu-Sn-Ni mixed powder; during vacuum hot pressing sintering, enabling surface carbon atoms of the diamond granules and metal Ti to be subjected to an infiltration combustion reaction to generate a TiC layer, and Ti and Al to be subjected to an infiltration combustion reaction to generate a TiAl alloy layer; and enabling redundant metal Al to melt, metal of Cu, Sn, Ni and a TiAl inter-metallic compound to be bonded together so as to form a Cu-Sn-Ni-Al base layer, wherein due to fluid tonicity, micro pores are formed among the diamond granules. Due to generation of TiC and TiAl, the transition of diamonds with Cu, Sn and Ni metal bases is realized, so that the controlling force of the diamond granules is greatly improved, and generation of the uniform micro pores is facilitated.

Description

technical field [0001] The invention belongs to the field of precision manufacturing, and in particular relates to a method for manufacturing a diffuse combustion Ti-Al-Cu-Sn-Ni microporous diamond grinding wheel. Background technique [0002] Monocrystalline silicon, aluminum oxide, carbide, nitride, sapphire, glass, etc., because of their high hardness, high brittleness, high wear resistance, high corrosion resistance, high oxidation resistance, high resistivity, high temperature resistance, non-conductive Many metal materials such as magnetism have excellent characteristics that are incomparable, and are widely used in semiconductors, aerospace, automobiles and other fields. In order for these hard and brittle material parts to have good performance, they must have very little surface roughness and surface and subsurface damage. However, due to the high hardness and brittleness of such materials, it is very difficult to process them. Diamond grinding wheels have the cha...

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Problems solved by technology

[0006] Purpose of the invention: The purpose of the invention is to meet the high requirements for grinding quality of difficult-to-machine hard and brittle materials such as single crystal silicon, alumina, carbide, nitride, sapphire, glass, etc., as well as high diamond holding force and uniform micropore distribution Due to the difficulty in manufacturing diamond grinding wheels and other problems, a manufacturing method for diffuse combustion Ti-Al-Cu-Sn-Ni microporous diamond grinding wheels was proposed

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