High abrasion-resistant hard alloy

Abstract

The invention relates to a high abrasion-resistant hard alloy. The high abrasion-resistant hard alloy is prepared by mixing, granulating and sintering of raw materials of, by weight, 83-90 parts of WCpowder with the fisher particle size being 1.2-2.0 [mu]m, 10-17 parts of Co powder with the fisher particle size being 0.6-1.0 [mu]m, 0.7-1.0 part of B powder and 0.2-1.0 part of C powder. Accordingto the prepared high abrasion-resistant hard alloy, B and C are added in the raw materials and se rve as crystal material inhibitors, crystal material refining of the alloy structure is guaranteed, and abrasion resistance of prepared bar materials is enhanced effectively.

Description

technical field [0001] The invention relates to the technical field of hard alloy material manufacture, in particular to a high wear-resistant hard alloy. Background technique [0002] Vias are one of the important components of PCB, and their functions are the electrical connection channels between layers and the fixing or positioning holes of devices. Mechanical drilling with PCB micro-drilling is the most commonly used processing method. The life of a conventional PCB drill bit is 2000-3000 holes, but as modern electrical appliances become more and more intelligent and miniaturized, the manufacturing technology of printed circuit boards with thin wires and narrow spacing is developing rapidly, and new materials for PCB boards are also getting faster and faster. It is getting harder and harder, because there are many strong materials in the material, the thermal conductivity of the material is low, and the processing speed is getting higher and higher. During the processin...

AI Technical Summary

Problems solved by technology

The life of a conventional PCB drill bit is 2000-3000 holes, but as modern electrical appliances are becoming more and more intelligent and miniaturized, the manufacturing technology of printed circuit boards with thin wires and narrow spacing is developing rapidly, and new materials for PCB boards are also getting faster and faster. It is getting harder and harder, because there are many strong materials in the material, the thermal conductivity of the material is low, and the processing speed is getting higher and higher. During the processing, more and more heat will be generated, which will accelerate the wear of the tool and make the PCB The life of the drill bit is greatly shortened. According to statistics, the main failure mode of the PCB drill bit is wear and fracture, which requires the material performance of the micro-drill bit for processing printed circuit board PCB holes to develop in the direction of higher strength, hardness, and wear resistance.