REVIEW THE CURRENT QUESTIONS AND STRATEGIES ABOUT MULTILAYER SINTERING SUPERABRASIVE TOOLS AND CONCEIVE THE DEVELOPMENT OF FUTURE TOOLS

Su Honghua

(College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016)

Xu Hongjun  Fu Yucan  Xiao Bing

(College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016)

Abstract: The main questions of current multi-layer sintering superabrasive tools are that their grains easily fall off from the matrix, the cuts of them difficultly outcrop in machining process, and grains load and grinding is not in proportion because of the stochastic grain distribution. The improving strategies and proceedings about these are reviewed. A new generation mono-layer brazing superabrasive tools and its encouragements are described. The advanced project is put forward to fabricate the renewal product of multi-layer superabrasive tools with brazing instead of sintering, exploiting new technology of the three-dimensional optimum distribution of grains and holes through using the experience of porous metal fabrication technology.

Key words: Superabrasive  Turing and dressing  Wheel topography  Brazing

CLC No: TG7

国家自然科学基金(50475040)和航空基金(03H52066)资助项目. Received 20040612, received in revised form 20041115