YAGレーザによる難削材料の加熱旋削加工に関する研究 : 第3報, ステライト自溶合金溶射皮膜の局所加熱旋削加工

概要

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To examine the effects of local hot turning on the machinability of Stellite self-fluxing alloy spray deposit, YAG laser beam of 1.2mm in diameter was irradiated at the position of 1mm ahead of the cutting region. The laser beam absorptance of the work material was as small as 0.074. Experiments were carried out for three kinds of tools. Polycrystal synthetic diamond tool was the only one able to cut the work material. The flank wear was classified into two types depending on the laser power Q ; one was the chipping of the major flank at Q=0W and Q=100W ; the other was the abrasive wear of the minor flank at Q=160W. At Q=160W, the work material could be cut at cutting speeds up to 200m/min ; the tool life was 7 times to 20 times longer than that without the irradiation ; the plane analyses of the flank with EDS demonstrated that the irradiation acts effectively to prevent the adhesion of the work material to the major flank, which increased the tool life.
一般社団法人日本機械学会の論文
2000-06-25