Water-cooled quick-condensation control method for deep and shallow distribution of hard abrasives in magnetic abrasive metal matrix

Abstract

The invention proposes a water-cooled quick-setting control method for the depth distribution of hard abrasives in the magnetic abrasive metal matrix, which is characterized in that: the lower part of the atomization cooling chamber of the powder-mixed gas atomization quick-setting magnetic abrasive preparation equipment is filled with cooling water, The water level of the cooling water in the atomization cooling chamber is adjusted by controlling the amount of water inflow; by adjusting the water level of the cooling water in the atomization cooling chamber, the flight distance of the powder-mixed metal droplet is adjusted, and then the powder-mixed metal droplet is adjusted. The cooling speed makes the mixed powder metal droplet cool down to form a magnetic abrasive in which the hard abrasive is distributed in the superficial layer of the magnetic abrasive metal substrate; this method not only solves the problem of controlling the depth of the hard abrasive in the superficial layer of the magnetic abrasive metal substrate, Moreover, the flight distance of the powder-mixed metal droplets is greatly reduced, the overall height of the atomization condensation chamber and the equipment is reduced, and the manufacturing cost of the equipment is reduced. The bond strength of the metal substrate. The inventive method is simple, stable and reliable, and is suitable for large-scale production of high-performance magnetic abrasives.

Description

technical field [0001] The invention provides a water-cooled quick-setting control method for the depth distribution of hard abrasives in a magnetic abrasive metal matrix, and belongs to the technical field of preparation of magnetic abrasive materials. Background technique [0002] Due to the advantages of magnetic particle grinding and finishing technology: flexibility, self-adaptability, self-sharpening, controllability, small temperature rise, no tool wear compensation, no modification, high efficiency, etc., at the same time, magnetic particle grinding The finishing process also avoids the complex requirements for the grinding head structure, can realize the grinding and finishing process of complex curved surfaces and solve automation problems, and can reduce the cost of mold manufacturing, which has caused extensive research and product development in the world, and has been It has been applied in many occasions for grinding and finishing of plane, outer circular surf...

AI Technical Summary

Problems solved by technology

[0003] At present, the main problems of magnetic grinding and finishing are the low service life of magnetic abrasives, poor metal cutting ability, difficult preparation and high cost.

For this reason, the inventors invented the "preparation method of gas atomization fast setting magnetic abrasive" (ZL201010206408.6), "gas atomization fast setting magnetic abrasive preparation equipment" (ZL201110156753.8), "gas atomization fast setting method Structural and Morphological Control Method for the Preparation of Magnetic Abrasives" (ZL201110156741.5), and achieved good results in practice, but there are still some key technical problems that affect the quality of magnetic abrasive preparation, such as: due to the failure to solve the problem of molten magnetic abrasive liquid Condensation speed control of drops, the depth distribution of the hard abrasive in the metal matrix of the prepared magnetic abrasive has not been stable enough, the distribution is shallow, and the combination with the metal matrix is ​​not firm, resulting in low grinding performance and shortened service life, which directly affects the magnetic abrasive. Excellent grinding capacity, high scrap rate

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