TiC-Cr3C2系複合セラミックス工具の切削特性に関する研究-2-合金鋼の切削 (ミクロ複合材料・ナノ複合材料<特集>)

概要

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In recent years. many ceramics and cermet tools with various kinds of properties have appeared on the market. The purpose of this paper is to clarify the tool life of TiC-Cr3C2 compound ceramics and TiC-Al2O3 ceramics tool on the machining of alloy steel at high cutting speed. The tool life was studied and discussed upon both continuous and Intermittent cutting by turning. The cutting speed for examination was 200 m/min, 250 m/min and 300 m/min. The results obtained are as follows; (1) In continuous cutting, tool life of TiC-Cr3C2 compound and TiC-Al2O3 ceramics tool was larger than those of cermet and ceramics tools. (2) The wear mechanism of TiC-Cr3C2 compound ceramics tool was pile up micro chipping on the tool edge. (3) In intermittent cutting, TiC-Al2O3 ceramics tool was appeared the longest tool life. (4) Since TiC-Cr3C2 compound ceramic and TiC-Al2O3 ceramics tool shows good cutting performance to the alloy steel, it is considered the cermet tool will be replaced by these tools.