高マンガン転てつ器の摩耗試験 : 加工硬化層について

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タイトル別名
  • On the Abrasion Test of High Manganese Point : To Layer of Work Hardening
  • コウマンガン テンテツキ ノ マモウ シケン

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Following the abrasion test of high manganese steel under the dry condition which was reported by the author, the present test has been carried out, using an abrasion testing machine of Amsler type, at various speeds ranging from 0 to 15 cm/sec and under various contact pressures ranging from 50 to 90kg/mm2. This test piece of tyre is of standard structure steel, containing about 0.7% C, and the other materials are deposited weld austenitic Mn-Cr steel, austenitic Mn-Ni steel, and austenitic Mn-Mo steel. The ideal combination of these austenitic manganese steel and tyre was resarched under the influence of lubrication in which same number of drops of Motor-oil (# 40) was supplied every day. The result of this resarch is as follows : 1)"Pitting" of the austenitic manganese steel is less than that of carbon steel, therefore the wearing amount of specimen is very little and the effect of lubrication is very remarkable. 2)The fact that the effect of wear prevention on the austenitic manganese steel is satisfactory under the influence of lubrication is supposed to be layer of work hardening.

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