Distributing process of one-shot brazing superabrasive tools

Abstract

The invention discloses a material distribution technology of a one-time forming brazing super-hard material grinding tool. The material distribution technology includes the following steps that firstly, composite pellets are prepared for standby application, the peripheries of abrasive particles are coated with solder layers to form a composite body, and the periphery of the composite body is coated with a paraffin layer to form composite pellets; secondly, the surface of a base body is cleaned; thirdly, a material distribution area of the surface of the base body is brushed and coated with binding agents; fourthly, the composite pellets are spread in the material distribution area, obtained in the third step, of the surface of the base body, the composite pellets are tightly distributed and stuck to the material distribution area of the surface of the base body so that semi-finished products can be obtained; fifthly, the surfaces of the semi-finished products are cleaned, and the semi-finished products are prepared to be welded. According to the material distribution technology of the one-time forming brazing super-hard material grinding tool, due to the fact that the abrasive particles and solder are matched according to a certain relation and made into the composite body according to a particle preparing technology, a layer of paraffin coats the outer face of the composite body to form the composite pellets, and therefore the material distribution technology is greatly simplified; use of material distribution equipment is combined, stability of the quality of brazing is ensured, and industrial production operation is facilitated. According to the designed scheme, adaptability to workpieces is good, the brazing quality is stable, and the material distribution technology is suitable for industrial production.

Description

technical field [0001] The invention relates to a material distribution process for brazing superhard abrasive tools, in particular to a material distribution process for one-time forming brazing superhard abrasive tools. Widely used in the production of brazed diamond saw blades, brazed diamond drill bits, brazed diamond grinding wheels, brazed beaded wire saws, special-shaped diamond tools, brazed CBN tools, alloy chips, corundum or silicon carbide and other superhard tools. The superhard abrasive tool prepared by the method can be applied to the fields of stone, pottery, glass processing, metal or non-metal processing, mining and the like. Background technique [0002] The traditional superhard tools represented by diamond tools can be divided into two categories: electroplating tools and sintering tools, each of which has its own strengths. However, due to the high surface energy of the diamond surface, it is difficult to infiltrate with common metals, and there is no f...

AI Technical Summary

Problems solved by technology

[0008] There are certain defects in the above two methods

The first method is difficult to control the brushing thickness of solder, and it is easy to cause too little or too much solder

It is also difficult to paint evenly, and it has poor adaptability to workpieces with large curved surfaces (special-shaped grinding wheels) and sharp-edged workpieces (such as saw blades). In addition, the mixing of powdered solder and adhesive is also difficult to control. Generally, the binder will be partially volatilized, and the concentration of the prepared solder paste is constantly changing, which may easily cause uneven thickness when smearing the workpiece; and because the brazing solder is generally a metal with a high density, it is easy to precipitate from the binder and form a precipitate block, also affects the use of cream solder

The second method is easy to operate on flat workpieces, but it is more difficult for curved surfaces and rotating parts

Although this process is easy to operate, after the semi-finished product is brazed, the abrasive is difficult to expose, or even not exposed, and it is more difficult to mix the abrasive with large particle size evenly.

The tools prepared by this process actually lose the advantages of brazing superabrasive technology, and cannot play the revolutionary effect of high sharpness and large chip removal space brought by brazing technology.

[0010] To sum up, it can be seen that all the current mature brazing tool distribution processes are mostly focused on the distribution of abrasives and solder, and the separate distribution of solder and abrasives not only has high requirements for the accuracy of the distribution, but also affects production efficiency due to many processes. Therefore, in order to accurately control product quality, stabilize the production process, and improve production efficiency, a new type of brazing superabrasive cloth process is needed to solve the above problems

Images