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複合組織鋼의 母相粒徑이 乾式로링 磨耗特性에 미치는 影響
吳世旭,姜鎬珉,金時綜 동아대학교 공과대학 부설 한국자원개발연구소 1985 硏究報告 Vol.9 No.2
The wear specimens of M.E.F. steel were conducted by Amsler type abrasive test machine under sliding ratio 9 09%. The relationship between weight loss ratio of wear, rolling life and scanning electron microscope investigation of micro wear surface was investigated during the test. The results of the experiment are summarized as follows. The amount and the weight loss ratio of the rolling wear are decreased when tensile strength is high and the amount of rolling wear of M E F. steel is lower than that of raw materials. As the ferrite grain size of M E F. steel is small, the amount and the weight loss ratio of the rolling wear are decreased. The amount of rolling wear is increased with increasing rolling revolution and wear of dual phase steel under dry rolling condition is characterized by three modes, initial, stationary wear and abnormal wear. Abnormal wear is caused by pitting occurrence on the exfoliation of sub-surface layer because of compression, shear, sliding of this wear surface. The wear surface condition is getting better as the ferrite grain size is getting smaller, which is caused by the promotion of the second phase sketetal strength.
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