Prealloyed powder high pressure atomization method is according to the designed ratio of the tire body, the metal of various components is smelted into alloy in advance before sintering, and then atomized powder is sprayed to obtain the required particle size of the tire body powder. Water atomization or gas atomization can be used in atomization. The gas can be atomized by air, nitrogen or argon gas. The cooling rate is fast. Metal powder of certain size and shape (spherical or irregular shape) can be obtained by adjusting nozzle geometry and controlling atomizing medium and other process parameters.

The prealloyed powder used in ceramic saw blade mainly includes fe-cu-ni-sn, fe-cu-co-sn, fe-cu-co and cu-sn series. This kind of pre-mixed gold powder is characterized by low sintering temperature, fine sintering structure, moderate hardness of the tire body, moderate bending strength and low abrasion of the tire body.

The hardness of the body of the ceramic scraper is high, generally greater than HRB95. Coarse knife requires good sharpness and long service life. It is widely used as the basic alloy fe-cu series, which is characterized by good compaction degree of sintering tissue, high hardness and long service life. Fe-cu-ni-sn series alloy powder is widely used in fine knives with both sharpness and service life. It is characterized by low sintering temperature, high hardness, high densification degree and good abrasion resistance. At the same time, the wear compatibility between the tire body and the diamond is good, and the diamond can keep the proper blade height in the working process.

Cobalt has many superior properties. Such as holding force to diamond, good sintering property, products with high density and good compatibility with other metal powder and diamond tools for the alloy powder has been widely applied, but because of its expensive price, supply channel is not stable, and in the aerospace, defense industry, carbide and the strategic resource status in the battery industry, so in recent years, the development and production of diamond tools pre alloy powder is mainly focused on the generation of cobalt alloy powders, it has the following features:

(1) the prealloyed powder develops towards low cobalt and cobalt free tyres in terms of chemical composition, so as to further reduce cost and improve cost performance.

(2) the usage performance of prealloyed powder is further improved and improved. For example, various methods are adopted to improve the density, impact strength and hardness of pre-mixed gold powder, reduce its sintering temperature, reduce the production of brittle phase, and improve the uniformity of its components.

(3) the product is developed to complete prealloying of the fetal body. Unlike pre-mixed gold powder, which is mainly produced on the basis of pre-mixed gold powder in the early stage of its development, the newly developed pre-mixed gold powder is for specific purposes and does not need to add other powder to fully pre-mixed gold powder body.

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