철계 소결체의 피삭성 향상에 관한 연구

A Study on the Improvement of Machinability of Sintered Ferrous Parts

철계 소결체에 피삭성을 향상시키는 원소(C, Mn, p) 및 화합물(MnO, CaF₂, SiO₂)을 Fe+0.7%C 소결체에 첨가하여 실험한 결과, 0.15%SiO₂+0.15%MgO을 첨가하여 소결한 후 증기처리를 실시한 소결체가 가장 우수한 피삭성을 나타내었다.

Various elements which can improve the machinability of sintered ferrous materials were added into the sintered Fe +0.7%C. From the results of the machinability felt, it was found that the sintered part containing 0.15%$SiO_2$+0.15%MgO, which was sintered followed by a steam treatment, exhibited the superior machinability.