• 제목/요약/키워드: Spiral Stirring Equipment

검색결과 4건 처리시간 0.017초

나선형 기계 교반 장치를 이용한 Al 합금 레오로지 소재의 제조 (Manufacture of Aluminum Alloy Rheology Materials Using Spiral Stirring Equipment)

  • 배정운;한수훈;강충길
    • 소성∙가공
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    • 제17권1호
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    • pp.9-12
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    • 2008
  • Recently, industries and academic institutes have been interested in the rheology forming technology for light weight materials. However, this rheocasting process has advantages such as the high initial investment cost and the lower mechanical properties than thixocasting. In this study, the continuous fabrication of rheological material with a spiral stirring equipment(mechanical stirring system) was newly devised to overcome the disadvantages of rheocasting process. The experimental parameters were stirring time($0{\sim}1200sec$), stirring velocity ($0{\sim}100rpm$) and stirring temperature($650{\sim}680^{\circ}C$). The optimal conditions for fabricated rheological material of A6061 alloy were stirring time at 300sec, stirring velocity at 60rpm and stirring temperature at $650^{\circ}C$. At these results, the equivalent diameter was $45{\sim}65{\mu}m$, mean roundness was $1.4{\sim}1.6$ and Vickers hardness was 60Hv.

나선형 기계 교반 장비로 제조된 레오로지 소재의 Thixoforging 공정 (Thixoforging Process of Rheology Materials Fabricated by Spiral Mechanical Stirring Equipment)

  • 정일갑;한수훈;배정운;강충길
    • 소성∙가공
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    • 제17권1호
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    • pp.5-8
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    • 2008
  • As the semi-solid forming technology has a lot of advantages compared to the die casting, squeeze casting and hot/cold forging, it has been studied actively. This paper focuses on the thixoforging of the rheological materials fabricated by the spiral mechanical stirring equipment with A356 casting aluminum alloy and A6061 wrought aluminum alloy. Formability tests of rheological materials fabricated by spiral mechanical stirring were carried out and the microstructures of forged sample were observed. After thixoforging experiment, the heat-treated conditions of forged samples are investigated to improve the mechanical properties. These results are able to suggest the possibility of commercialization for rheological materials fabricated by spiral mechanical stirring.

나선형 기계 교반 장치를 이용한 Al 합금 레오로지 소재의 제조 (The Manufacture of Aluminum Rheology Materials by Spiral Stirring Equipment)

  • 한수훈;배정운;강충길
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2007년도 춘계학술대회 논문집
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    • pp.397-400
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    • 2007
  • Recently, rheology forming technology has been interested in industrial and academic for light weight materials and to solve environmental issues. In this study, the rheology material production equipments were used to be made spiral shape by special design. And the experiment variables established stirring time 0 $\sim$ 1200 sec, stirring velocity 0 $\sim$ 100 rpm and several material temperature of semi - solid states. The rheology materials were made for established experiment conditions then measured mechanical properties. Sequence-production equipments were appended to fabrication system of rheology material for make rheology materials continually. Therefore, the development of sequence-production equipments were demanded for fine grains and for uniform globule shape rheology materials by a specially designed spiral stirrer machine.

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나선형 기계 교반 레오로지 소재의 이용한 Thixoforging 공정 (Thixoforging Process of Rheology Materials fabricated by Spiral Mechanical Stirring)

  • 한수훈;정일갑;배정운;강충길
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2007년도 춘계학술대회 논문집
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    • pp.131-134
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    • 2007
  • A semi-solid forming technology has a lot of advantages compared to the die casting, squeeze casting and hot/cold forging, so semi-solid forming has been studied actively. Semi-solid forming has two methods. One is thixoforming with reheating of prepared billet, the other is rheoforming with cooled melt until semi-solid state. Thixoforging technology can produce non-dendritic alloys for semi-solid forming complex shaped parts in metal alloys. In this study, the thixoforging was experimented with made rheology materials by the spiral stirrer equipment. Rheology materials for forging were made by A356 casting aluminum alloy and A6061 wrought aluminum alloy. After experiment, forged samples were measured microstructure and were heat treated for high mechanical properties.

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