Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Effects of Viscosity Control by Induction Heating on Micro Cell in Forming Process of Foamed Aluminum

알루미늄 발포재의 성형공정에서 유도가열 법에 의한 점도 제어가 미세 기공에 미치는 영향

  • 전용필 (부산대학교 대학원 기계공학부) ;
  • 강충길 (부산대학교 기계공학부)
  • Published : 2002.06.01
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Abstract

Melting method has long been considered difficult to realize because of problems such as the low foamability of molten metal, the varying size of cellular structures and solidification shrinkage. The parameters to solve the problem in electric furnace were stirring temperature, stirring velocity, heating velocity and foaming temperature It is important to consider the effects of induction heating, because it brings about the inner flow by the temperature gradient. Aspect ratio also depends on the induction heating. Mechanical properties are dependent on cell sizes and aspect rations. Therefore, this paper presents the effects of these parameters on the cell sizes. For the sake of this, combined stirring process was used to fabricate aluminum foam materials by the above mentioned parameters. Image analysis was performed to calculate the cell sizes, distributions, and aspect ratioes at the cross section of feared aluminum in the direction of height.

Keywords

References

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