快削性セラミックスの切削性能に関する研究(第4報) : 湿式切削

概要

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Glass ceramics consisting of fluor-phlogopite can be machined with tight tolerance with conventional metal working equipments and tools. The purpose of this paper is to study flow rate of cutting fluids and to find the mechanism of wear of tools with high efficiency.<BR>The tests of cutting mica-ceramics were performed with K10 of sintered carbide tool by turning. It was observed that there were specific phenomena in worn surface of tool in wet cutting test. The main results obtained are as follow: (1) Wet cutting test might bring about high cutting speed of about 200 m/min. (2) The large width of worn surface increased roughness of machining surface. (3) When the value of cutting speed corresponded to that of the velocity of cutting fluid, there existed an area without fluid on the tool. (4) In this cutting test, tool life and surface roughness were better than in dry cutting test.
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