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    • 10. 发明专利
    • ALUMINA TYPE GRINDING WHEEL
    • JPH06190725A
    • 1994-07-12
    • JP34824792
    • 1992-12-28
    • AGENCY IND SCIENCE TECHNYOSHIDA KOGYO KK
    • SHIBAZAKI YASUONAGAI YOSHITAKA
    • B24D3/00B24D3/28
    • PURPOSE:To enhance the grinding efficiency, generate a finish surface of high quality, and provide easy manufacturability for an ultra-thin grinding wheel by forming a grinding layer in which plate-form alumina grains are uniformly dispersed and oriented in a binder resin. CONSTITUTION:Fine powder of plate-form alumina particles is generated in which the crystal form with similar particle sizes is hexagonal and a specific crystal surface is grown in the form of flat plate, and is used as abrasive grains, whereto a thermohardening resin as a binder is added so as to be equal amount, followed by mixing together. The inside of a nozzle is filled with this mixture, followed by heating till a temp. at which the binder resin is turned in semi- molten state. Right under the nozzle, the film substrate of polyethylene terephthalate is arranged, and thereover a grinding layer is formed to a thickness of approx. 200mum. The resultant is dried and press shaped to fabricate a grindstone. The grinding layer of the resultant grindstone is so formed that plate-form alumina particles as grindstone are uniformly dispersed and oriented in the binder resin.