Machining method for preparing structurized grinding wheel through two-time fusion covering process

Abstract

The invention belongs to the technical field of superhard abrasive and grinding machine manufacturing, and relates to a machining method for preparing a structurized grinding wheel through a two-timefusion covering process. According to the machining method for preparing the structurized grinding wheel through the two-time fusion covering process, a metal binding layer and a structurized grindingworking layer are sequentially formed on the surface of a grinding wheel base body through the two-time fusion melting process, a coaxial powder feeding laser near-net forming process is adopted foreach of the first fusion melting process and the second fusion melting process, metal binding agent powder and abrasive powder are sequentially fed, the scanning paths of the first fusion melting process and the second fusion melting process are identical, and the laser machining power of the second fusion covering process is 50-100 W smaller than that of the first fusion melting process. By meansof the method, the problems that abrasive particles in mixed powder are deeply buried in the bottom of the binding layer and cannot participate in grinding, the height consistency of the abrasive particles is difficult to control, and the quality of the grinding working layer is affected as the needed binding temperature between the base body and a binding agent and the needed binding temperaturebetween the abrasive particles and the binding agent are different are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing superhard abrasives, and relates to a processing method for preparing a structured grinding wheel using a secondary cladding process, in particular to a structured grinding wheel with metal bond superhard abrasive grains based on laser near-net shaping method of preparation. Background technique [0002] With the rapid development of today's scientific and technological level, the direction of modern machining technology also tends to be higher speed, higher efficiency and higher precision. As a precision processing method, grinding has become an irreplaceable part of the processing industry. In recent years, many hard, brittle and difficult-to-machine materials and plastic difficult-to-machine materials have been widely used in the fields of national defense, energy, and electronics, relying on their advantages of high strength, high hardness, and excellent wear resistance. For these diff...

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Problems solved by technology

This method effectively solves the problem that the abrasive grains in the mixed powder are deeply buried at the bottom of the bonding layer and cannot participate in grinding, the height consistency of the abrasive grains is difficult to control, and the required bonding temperature between the matrix and the bond and the gap between the abrasive grains and the bond The problem that the required bonding temperature is different and affects the quality of the grinding working layer

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