Method for manufacturing metal bonding agent and super-hard abrasive structured arrangement end face grinding wheel through laser cladding process

Abstract

The invention discloses a method for manufacturing a metal bonding agent and super-hard abrasive structured arrangement end face grinding wheel through a laser cladding process. The method includes the following steps that metal powder and super-hard abrasives are mixed; ball-milling is performed; screening is performed; a mixture is poured into a laser cladding powder feeder; a metal matrix is polished, oil dirt and impurities on the metal matrix are removed, the surface of the metal matrix is cleaned, and the bright and clean to-be-machined metal matrix is obtained; according to certain laser processing parameters and a laser scanning strategy, the bright and clean to-be-machined metal matrix serves as a substrate for laser cladding processing, laser cladding processing of the super-hard abrasives is performed, and a metal substrate with a cladding layer in a special shape is obtained; and the metal substrate with the cladding layer in the special shape is cut into a disk-shaped metal substrate, and the disk-shaped metal substrate and a machined cutter handle are assembled to form the grinding wheel for end face grinding. The method is flexible and high in manufacturing efficiency, reduces the abnormal failure possibility of the super-hard abrasives, and improves the bonding force and the integrity of the super-hard abrasives in a metal bonding agent.

Description

technical field [0001] The invention relates to a method for manufacturing a superhard abrasive processing tool, in particular to a method for manufacturing a metal bond superhard abrasive structured and arranged end surface grinding wheel by a laser cladding process. Background technique [0002] As modern industrial technology and high-performance technology products have higher and higher requirements for parts processing precision, surface roughness and integrity, processing efficiency and batch quality stability, the role of abrasive processing is becoming increasingly important. At present, there are mainly two types of manufacturing methods for new superhard grinding tools, one is vacuum furnace high-temperature brazing method, and the other is high-frequency induction brazing method. Compared with the traditional grinding wheel preparation method, these two new superhard grinding tool manufacturing methods have higher protruding height of abrasive grains, stronger ho...

AI Technical Summary

Problems solved by technology

[0005] However, there are many unavoidable defects in the laser brazing superhard abrasive grain processing method. For the laser brazing superhard abrasive grain processing method of powder coating, it is difficult to ensure the uniformity of the powder coating thickness, and the thickness of the powder coating is too thick. As a result, the laser sintering powder layer cannot be tightly combined with the matrix, so that the superhard abrasive grains together with the metal bond fall off from the metal matrix during processing, and the existing process cannot guarantee the integrity of the metal powder laid in a thinner case, which is not conducive to ultra-hard grinding. Preparation of Hard Abrasive Grinding Tools

For the laser brazing superabrasive process of spraying abrasive grains, the combination of abrasive grains and brazing powder is not firm, and the processed grinding tools have abrasive grains falling off during the grinding process.

Also, the machined surface is too undulating to meet the standards of grinding tools

Under the processing methods of these two processes, the abnormal failure of superhard abrasive grains is also very serious

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