境界損傷に及ぼす切削油剤の効果 : ニモニック 80 A の被削性(第2報)

概要

論文の詳細を見る
In dry cutting of nimonic 80 A, which is one of nickel-base alloys, the remarkable chipping or/and fracture occur in the boundary region of the side cutting edge. The life of various tool materials is mainly determined by this boundary failure. This tool failure is caused by large cutting forces due to the work hardening in the thin layer near the surface of the workpiece. In this paper, the influence of cutting fluids on the failure of various tool materials is experimentally investigated. With oil-base fluids the work hardening is suppressed and boundary fracture decreases in comparison with dry cutting and water-base fluids. This effect is remarkable, especially for TiC- or Al_2O_3-coated tools. The boundary wear also decreases for tungsten carbide K 10 if the amount of the extreme-pressure agents in oil-base fluids is increased. The effect of cutting fluids, however, can hardly be expected for the flank wear of the other parts except the boundary.
公益社団法人精密工学会の論文
1990-09-05