Preparation method of novel multilayer brazing super-hard abrasive tool

Abstract

The invention discloses a preparation method of a novel multilayer brazing super-hard abrasive tool, and belongs to the field of super-hard abrasive tool manufacturing. The preparation method comprises the step 1) of proportionally mixing diluted materials with brazing solders to form composite agents; the step 2) of pelletizing and packing super-hard abrasives, and bonding and fixing the super-hard abrasives with water-soluble binders; the step 3) of uniformly mixing the packed super-hard abrasive compounds with filling materials, the brazing solders and the water-soluble binders; the step 4)of putting the mixtures in a mould for pressure forming; and the step 5) of heating and brazing formed blanks; according to the method, the brazing strength of single abrasives is controlled indirectly by control of the size of a brazing area of the brazing super-hard abrasives, and the multilayer sustainable processing performance of multilayer brazing is achieved through the structure collocation of the filling materials; the life of the brazing super-hard abrasive tool is prolonged; the preparation technology is simple, and the quality is stable and easy to control; and the working procedures can be standardized, and applicable for industrial mass production.

Description

technical field [0001] The invention belongs to the field of superhard abrasive tool manufacturing, and specifically refers to a preparation method of a novel multilayer brazing superhard abrasive tool. Background technique [0002] Traditional superabrasive tools represented by diamond tools can be divided into two categories: electroplated tools and sintered 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 firm metallurgical bonding layer at the interface between the abrasive grains and the matrix metal. The carcass has a small holding force on the abrasive grains, and the abrasive grains are easy to fall off due to the wear of the carcass, and the utilization rate is not high; on the other hand, because the diamond particles are mechanically embedded, the exposed height is small, and the cutting efficiency not tall. [0003] A new generation of br...

AI Technical Summary

Problems solved by technology

The abrasive particle size is small, and it is mostly used in grinding, and through the analysis of relevant data, it is believed that although this kind of tool has a certain chemical reaction on the surface of the abrasive, the combination of the abrasive and the matrix has a certain brazing effect, but the exposure of the abrasive , The holding strength of abrasive grains, multi-layer grinding performance and other aspects still have great difficulties. The abrasive grain size is large and easy to fall off, the abrasive exposure is low, the chip removal effect is poor, and the multi-layer grinding effect is not obvious or even unsustainable.

Therefore, it is considered that this method does not fundamentally design and optimize the structure of multi-layer brazing abrasives, and it is difficult to exceed the set pattern of traditional sintered diamond tools.

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