鋳鉄の摩耗現象と摩耗粉の関係について

概要

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The wear test of the pair of plain cast irons was performed in air atmosphere, and it was found that the formation of oxide film took place on their frictional surfaces and oxide mixed metallic particles always existed on frictional surface and gave a big effect on wear phenomena. Therefore, in this work, the composition change of wear particles produced under some frictional conditions was studied by using X-ray diffraction method. And then, the wear phenomena were investigated by employing grooved frictional surfaces by which particles could be removed easily. Results obtained were as follows ; 1) At lower frictional velocity when Fe_2O_3 film was formed, the oxide film were not good under heavy load. 2) The amount of Fe_2O_3 particles decreased with increasing frictional velocity and had a minimum value at 1 m/sec. And then considering these facts, the wear loss will increase rapidly on the condition that the equilibrium between repairing and tearing rates of oxide film is broken. 3) In general, wear loss decreased when grooves were made along the frictional surface, however it did not always decrease at relatively high frictional velocity. 4) It was found that hardened wear thin metallic flakes (Hv ; 800) were torn off from hardened surface layers (Hv ; 1000) and transformed to ledeburite structure by melting at too high temperature.
社団法人日本鉄鋼協会の論文
1970-08-01