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Simple Introduction of Diamond Brazing Technology

High hardness and excellent physical and mechanical properties of diamonds make diamond tools become the indispensable and effective tools for processing all kinds of hard materials.

From: www.iabrasive.comDate: 2015-10-24 09:17:35Views: 893

High hardness and excellent physical and mechanical properties of diamonds make diamond tools become the indispensable and effective tools for processing all kinds of hard materials. The cohesiveness of metal matrix for diamond is the one of main factors influencing the service life and performance of diamond tools.

There are very high interfacial energy between diamond and metal and alloy, which makes diamond grains not be infiltrated by general low melting point alloy, so it has poor bonding effect. In the traditional manufacturing technology, the diamond particles are only put in the metal matrix by using mechanical clamping force, and do not form strong chemical bonding or metallurgical bonding, which makes diamond particles easy separating from the metal matrix in work, and greatly reduces the service life and performance level of diamond tools. The utilization ratio of diamonds is low in most impregnated tools, and a lot of expensive diamonds lost in attle. Lin Zengdong is the first to use the diamond surface metallization technology to give a lot of new features, such as good thermal conductivity, good thermal stability, improving its original physical and chemical properties, improving the wettability of metal or alloy solution, etc.

At present, the brazing method that is used to produce diamonds or cubic boron nitride tools has started to become a hot technology, but it is only limited to the single tools, and has yet to see multilayer implementation. Foreign brazing technology research began in the late 1980s, and its application is still limited to single tools because the work is complex and still stays in the experimental stage; High temperature brazing technology research in China starts late, and the breadth and depth of research are not enough compared with the developed countries, but the pace of research has also been gradually accelerated.

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