A method for inlaying cemented carbide blocks

Abstract

The invention provides an inlaying method for a hard alloy block. The inlaying method for the hard alloy block comprises the following steps that the hard alloy block and a ring sleeve consistent withthe hard alloy block in shape are selected; the ring sleeve is arranged outside the hard alloy block in a sleeving mode, and a gap of 0.5-2 mm is reserved between the side walls of the ring sleeve and the hard alloy block; the ring sleeve and the hard alloy block are brazed together, wherein the inclination angle of the outer side face of the ring sleeve is 45-85 degrees; a groove in the shape ofan inverted circular truncated cone is machined in a workpiece with the size of the large bottom surface of the lower end of a combined structure as the size of the bottom surface of the workpiece, wherein the inclination angle of the inner side face of the groove is 90-120 degrees; the large bottom surface of the combined structure is downwards placed into the groove, and a welding groove is formed by the inner side face of the groove and the outer side face of the combined structure; and the welding groove is filled. According to the inlaying method for the hard alloy block, under the mechanical limiting effect of the ring sleeve on the hard alloy block, the hard alloy block is not prone to falling and has higher structural strength, and the service life is greatly prolonged; the workpiece is not heated when brazed, so that the heat influence on the workpiece is small; the inlaying method is not affected by equipment, so that limitations of the welding place and the size of the workpiece are smaller; and the inlaying method has great social benefits and economic benefits.

Description

technical field [0001] The invention relates to the field of welding, in particular to a method for embedding cemented carbide blocks. Background technique [0002] Cemented carbide is sintered with a hard phase and a binder phase. It contains a large amount of hard phases such as WC and TiC. It has high hardness, high bending strength and excellent wear resistance. It is widely used in cutting tools and drills. In many aspects such as tools, wear-resistant parts, molds, etc., the current mosaic connection method of cemented carbide parts is mainly brazed, but the tensile strength of the brazed weld rarely exceeds 400MPa, and the connection strength is relatively low, resulting in hard The high-quality alloy block is easy to fall off, and the service life is relatively short; and the brazing temperature is relatively high, and the heating method generally adopts flame, heating furnace, induction heating, etc., the heating area is large, and the thermal influence on the workp...

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to solve the defects of the prior art, the purpose of the present invention is to provide a method of inlaying cemented carbide blocks, which can effectively solve the problem of short service life caused by the low connection strength of the existing connection method and the large thermal impact on the workpiece. And problems such as inflexibility of the production site

Images