転がり疲れに及ぼす粗さ組合せとなじみの影響 : 軸方向研削された鋼ローラの場合

概要

論文の詳細を見る
Using axially ground steel rollers with a hardness of about 320 Hv or 440 Hv, the authors examined the effect of roughness combination of two mating surfaces on the occurrence of pitting in the case of almost the same hardness combination. As a result, it was shown clearly that pitting is apt to occur on the smoother surface but is restrained on the rougher mating surface when two rollers with a large difference in roughness are combined under pure rolling conditions. Consequently, the pitting life is generally short when the faster roller is rough and the slower roller is smooth, while the life is extremely long when the roughness combination is reversed in rolling with sliding conditions. On the other hand, when two surfaces are equally rough, the roughness has a tendency to diminish on both sides and the pitting life is prolonged in pure rolling conditions. In rolling with sliding conditions, however, pitting occurrs at an earlier stage of operation corresponding to the severity of asperity interactions. This is in contrast with the case of cylindrically ground rollers.
一般社団法人日本機械学会の論文
1993-05-25