Method for separating grinding material layer and basal body of electroplated diamond grinding head

Abstract

The invention discloses a method for separating a grinding material layer and a basal body of an electroplated diamond grinding head, which is characterized by comprising the following steps: generating a tiny clearance between the grinding material layer and the basal body of the diamond grinding head by an induction heating method and then thoroughly separating the grinding material layer and the basal body by torsion and pull. The invention has the advantages that because the grinding material layer is heated by the induction heating method, the grinding material layer is heated and expanded and generates the tiny clearance with the basal body; then the end part of the grinding material layer is clamped by a second jig to keep the grinding material layer fixed, the basal body is alternately twisted by a first jig in the clockwise and anticlockwise directions, and the grinding material layer and the basal body are loosened so as to further promote the separation of the grinding material layer and the basal body; the whole heating and separating process has high speed and efficiency and less surface oxidation of the basal body and the grinding material layer and saves energy resources, and the induction heating method has precise heating depth and temperature and is easy to control the whole heating process.

Description

technical field [0001] The invention relates to an electroplated diamond grinding head, in particular to a method for separating an abrasive layer of an electroplated diamond grinding head from a substrate. Background technique [0002] The electroplated diamond grinding head is a kind of diamond tool made by consolidating diamond abrasive grains on the substrate by electroplating. The diamond grinding head is mainly used for internal grinding of hard and brittle materials such as cemented carbide, glass, ceramics, etc. It is mainly composed of a metal substrate and an abrasive layer, and the abrasive layer is the main working part of the electroplated diamond grinding head , which consists of two parts: diamond abrasive grains and bond coating. Generally, nickel coating or nickel-cobalt coating is used as a bond to consolidate diamond abrasive grains. When the diamond grinding head is used for many times, the diamond abrasive grains are worn away and the abrasive layer bec...

AI Technical Summary

Problems solved by technology

When the diamond grinding head is used for many times, the diamond abrasive grains are worn away and the abrasive layer becomes thinner, and the grinding head with remaining diamond abrasive grains loses its cutting ability and is scrapped. Also consumes material and costs, so end-of-life diamond grinding points are often recycled

[0003] At present, the acid etching method is widely used to recover diamond grinding heads. This method uses acid to dissolve the coating metal of the abrasive layer to recover diamond abrasive grains. However, the acid etching method has strong corrosion and low recovery efficiency. At the same time, the substrate of the grinding head is also corroded, so that the substrate cannot be reused, and a large amount of harmful gas is generated during the recycling process, which pollutes the environment and endangers the health of the operator, which does not conform to the principle of green remanufacturing; there are also recycling diamond grinding wheels by electrolysis. In the recovery process, the abrasive layer and the matrix are physically separated by multiple heating and water cooling methods, and then the separated abrasive layer is electrolytically recovered. Although this method can make the matrix and diamond abrasive grains all be recovered and reused , but the abrasive layer and the substrate are separated by electric furnace heating and water cooling, the heating and separation are slow, the time is long, the efficiency is low, and the surface of the abrasive layer and the substrate is highly oxidized

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