The Machinability of 2011 P/M Al Alloys Extruded Rapidly solidified by Rotating Disc Atomization

원심 분부법으로 제조된 P/M 2011 Al 합금 압출재의 절삭성

  • Jeon, Chang-Bae (Dept. of Met. Eng. of Yeunmudae Mech. Tech. High School) ;
  • Kim, Jong-Chan (Dept. of Met. Eng. of Yeunmudae Mech. Tech. High School)
  • 전창배 (연무대기계공업고등학교 금속과) ;
  • 김종찬 (연무대기계공업고등학교 금속과)
  • Published : 1998.07.01

Abstract

The machinability properties of P/M 2011 AI alloys extruded rapidly solidified by rotating disc atomization were investigated in this study. The Pb-Bi particles were very uniformly and finely dispersed in the P/M 2011 AI alloys extruded rapidly solidified. According to the increase of cutting speed, the short discontinuous chips were produceed and continuous chips were formed from the lower feed values of O.lmm/rev. The surface roughness is depend on the feed values, not cutting depth and cutting speed. The short discontinuous chips were formed due to dispersed $AI_20_3$ particles and Pb- Bi inclusion.

원심 분무법으로 제조된 P/M 2011 AI 합금 압출재의 절삭성을 조사하였다. 압출재 내에 분포된 Pb-Bi 입자들은 매우 균일하고 미세하게 분포된다. 절삭속도가 증가할수록 미세한 칩이 생성되며 이송량이 0.1mm/rev 이하에서부터는 연속칩이 생성된다. 표면의 상태는 이송량에 크게 의존하며 절삭깊이와 절삭속도에는 크게 의존하지 않는다. 불연속칩은 분산된 $AI_2O_3$입자와 공정 Pb-Bi 개재물의 존재로 인해서 생성된다.

Keywords

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