The Effect of Surface Roughness on Scoring : Part 3, In the Case of Hardened Carbon Steel

概要

論文の詳細を見る
Following the previous paper the effect of surface roughness on scoring was investigated using a two-disc machine. Unlike in the previous investigation with an annealed carbon steel of high work-hardening ability, in the present investigation the disc material was a hardened carbon steel with high surface hardness and little ability of work-hardening. The anti-scoring performance of the discs with small roughness showed duality. Whereas scoring occurred when the surface temperature reached a critical value of about 180 ℃, it did not occur even when the surface temperature exceeded the critical one, and the anti-scoring performance represented by fPVs at scoring (f: coefficient of friction, P: applied load per unit contact width, Vs: sliding speed) increased proportionally with an increase in concentration of oxygen on the disc surfaces. The formation of oxide film on the surface of the high speed disc promoted the anti-scoring performance, that is, it is benefical for prevention of scoring to use a disc with smaller roughness than the mating disc as the high speed disc.
一般社団法人日本機械学会の論文