Efficient grinding method of hard alloy powder

Abstract

The invention discloses an efficient grinding method of hard alloy powder. The efficient grinding method of the hard alloy powder comprises the following steps of sufficiently mixing the hard alloy powder and then feeding the hard alloy powder into a hard alloy stirring ball mill to be milled; the hard alloy stirring ball mill comprises a stirring cylinder, a rotating shaft and a stirring arm, wherein the stirring cylinder is mounted on a frame body; a power transmission device and a power machine are connected to the rotating shaft; multiple integrally circular bushing rings are mounted on the internal wall of the stirring cylinder; the bushing rings, the rotating shaft and the stirring arm are all made of a hard alloy material; and multiple vertical arc grooves are formed in the internalsides of the bushing rings. The efficient grinding method of the hard alloy powder has the advantages that the method is efficient and reliable, and the technical property of the hard alloy powder can be very well guaranteed.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a high-efficiency grinding method of cemented carbide powder. Background technique [0002] At present, the existing domestic method for grinding cemented carbide powder materials is still grinding with a ball mill, and the grinding barrel of the ball mill used is still made of stainless steel, which has low hardness and poor wear resistance. When using high-quality alloy powder materials, the inner barrel wall of the ball mill is very easy to wear, which affects the service life of the ball mill; at the same time, the stainless steel powder that falls when the inner barrel wall is worn is mixed into the cemented carbide powder, reducing the wear of the cemented carbide powder. The purity of the powder greatly affects the process performance of the powder. [0003] In addition, the structure of the existing cemented carbide stirring ball mill generally adopts the v...

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Problems solved by technology

[0002] At present, the existing domestic method for grinding cemented carbide powder materials is still grinding with a ball mill, and the grinding barrel of the ball mill used is still made of stainless steel, which has low hardness and poor wear resistance. When using high-quality alloy powder materials, the inner barrel wall of the ball mill is very easy to wear, which affects the service life of the ball mill; at the same time, the stainless steel powder that falls when the inner barrel wall is worn is mixed into the cemented carbide powder, reducing the wear of the cemented carbide powder. The purity of the powder greatly affects the process performance of the powder

[0003] In addition, the structure of the existing cemented carbide stirring ball mill generally adopts the vertical rotation stirring method, that is, in the mixing drum containing the cemented carbide powder, the rotating shaft rotating vertically in the middle of the stainless steel mixing drum and the rotating shaft along the rotating shaft are used. There are multiple stirring arms scattered around. When grinding, this structure will cause the cemented carbide powder to directly rub against the stainless steel mixing drum. Due to the lack of hardness, strength and wear resistance of the stainless steel mixing drum, it is easy to wear, and The grinding effect is poor and the service life is short

[0004] Moreover, the inner wall of the grinding barrel of the existing stirring ball mill is a cylindrical surface structure. When rotating and grinding, because the inner wall of the mixing drum is a smooth cylindrical surface, the ball milling powder is mostly concentrated in the stirring arm for stirring due to the centrifugal force. The inner wall of the cylinder rolls and falls, making it difficult to form convective collisions. This structure will lead to low grinding efficiency of alloy powder, and the grinding effect is poor. Generally, long-time grinding is used to achieve a good grinding effect, which indirectly reduces the The service life of the ball mill

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