Diamond grinding wheel induction brazing device and brazing method

Abstract

The invention discloses a diamond grinding wheel sensing brazing device and a brazing method. The brazing device comprises a sensing power source and a sensing coil which is electrically connected with the sensing power source. The brazing device further comprises a grinding turning wheel which fixes a diamond grinding wheel base body, the sensing coil is arranged on the outer periphery of the diamond grinding wheel base body and distributed in point shape, and a gas protective cover is arranged outside the sensing coil. The gas protective cover is connected with an inert gas source. The diamond grinding wheel sensing brazing solves the problems that brazing technology in an existing vacuum furnace is long in brazing period, thermal deformation of the grinding wheel base body is large and the like. A heating area is concentrated on the surface layer of the grinding wheel base body, so that the diamond grinding wheel sensing brazing device can effectively eliminate thermal deformation of the grinding wheel base body, and is beneficial to being applied to high-efficiency precise grinding machining of a single-layer brazing diamond grinding wheel. Secondly, temperature of the surface of the base body can quickly rise to brazing temperature. Finally, manufacturing period of a diamond grinding wheel is shortened greatly, and brazing efficiency is improved.

Description

technical field [0001] The invention relates to the field of superhard abrasive tools, in particular to a diamond grinding wheel induction brazing device and method. Background technique [0002] In the early 1990s, foreign countries began to study the use of brazing instead of electroplating to develop a new generation of single-layer brazing superabrasive tools. With the help of high-temperature brazing, the brazing material can be dissolved, diffused, and combined on the interface between the abrasive particles and the metal matrix. The interaction between the abrasives, the bonding agent (solder alloy), and the matrix fundamentally improves the bonding strength among the three. Compared with traditional single-layer electroplated tools, brazed tools have obvious advantages in terms of abrasive particle exposure height, grinding force, and tool life. In addition, the abrasive grains on the surface of the brazed tool can be properly sparse and arranged in an orderly manne...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low brazing efficiency and thermal deformation of the substrate due to the large heat-affected zone in the brazing process, further exert the advantages of the induction brazing process of superhard abrasive tools, and make up for the shortage of brazing in the current vacuum furnace, the present invention The purpose is to provide a method for ultra-high frequency continuous induction brazing of single-layer brazed diamond grinding wheels, using an ultra-high frequency induction heating power supply with fast heating speed and concentrated heating as its heat source to eliminate the friction of the substrate during the brazing process. Thermal deformation; at the same time, it also greatly shortens the production cycle of diamond grinding wheel and improves the brazing efficiency

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