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자기펄스 압축성형법에 의한 다이아몬드 공구용 세그먼트 분말 성형 KCI 등재

Consolidation of Segment Powder for Diamond Tool by Magnetic Pulsed Compaction

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  • URLhttps://db.koreascholar.com/Article/Detail/2627
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한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

This article presents the successful consolidation of the mixed Co and Diamond powders for a drilling segment by the combined application of magnetic pulsed compaction (MPC) and subsequent sintering, and their properties were analyzed. Homogeneous hardness (Hv 220) and density (97%) of sintered bulks fabricated by MPC were obtained by the new technique, where higher pressure has been employed for short period of time than that of general process. A fine microstructure and homogeneous hardness in the consolidated bulk were observed without cracks. Relatively higher drilling speed of 9.61 cm/min and life time of 6.55 m were found to the MPCed specimens, whereas the value of the specimens fabricated by general process was 11.71 cm/min and 7.96 m, respectively. A substantial improvement of mechanical properties of segment was achieved through this study.

저자
  • 윤종수 | Yun J.S.
  • 이정구 | Lee J.G.
  • 이민구 | Lee M.K.
  • 이창규 | Rhee C.K.
  • 박문석 | Park M.S.
  • 홍순직 | Hong S.J.