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Abstract: To solve the difficult problem of cutting engineering
ceramics, the plasma arc cutting method with additional positive pole is
offered. The rationale, forms and characteristic of the method are
introduced. By means of cutting Al2O3 plates, the affect of each
re-confined condition on plasma arc and kerf quality is studied. When
the diameter of the nozzle is 4 mm, the kerf width is less than 5 mm and
the cutting speed reaches to 0.8~1.0m/min. The method is expected to
become an useful technology for cutting engineering ceramics.
Key words: Plasma arc cutting Engineering ceramics
CLC No: TG483
国家自然科学基金资助项目(59805002，50175035).
Received 20020830, received in revised form 20021030
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