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The Effect of Velocity Control Method on the Part Characteristic in Semi-Solid Die Casting

반용융 다이캐스팅 공정에 있어서 속도제어방법이 제품의 특성에 미치는 영향

  • 서판기 (부산대학교 대학원 정밀기계공학과) ;
  • 강충길 (부산대학교 기계공학부, 정밀정형 및 금형가공연구소) ;
  • 손영익 (부산대학교 대학원 정밀기계공학과)
  • Published : 2002.10.01

Abstract

The process design to produce a near net shape home-appliance compressor component using semi-solid die casting process is performed. In order to obtain a good component without defects such as liquid segregation and porosity, the relationship between pressure and time, and plunger tip displacement and injection velocity are proposed with repeated trial and error. The effect of the velocity variation in the process parameters on liquid segregation and extraction is investigated to produce the aluminum frame part(a kind of compressor part) with good mechanical properties. The mechanical characteristic of semi-solid die casting formed parts for AlSi7Mg0.65r(A357) and AlSi17Cu4Mg(A390) are investigated with a view to minimizing the occurrence of defects. To investigate of application possibility at industry field, A380 aluminum alloy with 8∼9% silicon contents used for the squeeze casting process. The obtained mechanical properties is compared with semi-solid die casting.

Keywords

Semi-Solid Die Casting;Velocity Control Method;Mechanical Property

References

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