Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Establishment of Manufacturing Conditions for Magnesium Alloys by the Melt Drag Method using Equipment with a Forming Belt

성형벨트를 부착시킨 장비를 이용하여 용융드래그방법으로 제작한 마그네슘 합금의 제작조건 확립

  • Han, Chang-Suk (Dept. of ICT Automotive Engineering, Hoseo University) ;
  • Kwon, Yong-Jun (Dept. of ICT Automotive Engineering, Hoseo University)
  • 한창석 (호서대학교 자동차ICT공학과) ;
  • 권용준 (호서대학교 자동차ICT공학과)
  • Received : 2021.07.02
  • Accepted : 2021.10.05
  • Published : 2021.10.27
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Abstract

To improve the shortcomings and expand the advantages of the single-roll melt drag method, which is a type of continuous strip casting method, the melt drag method with a molding belt is applied to AZ31 magnesium alloy. By attaching the forming belt to the melt drag method, the cooling condition of the thin plate is improved, making it possible to manufacture thin plates even at high roll speed of 100 m/min or more. In addition, it is very effective for continuous production of thin plates to suppress oxidation of the molten metal on the roll contact surface by selecting the protective gas. As a result of investigating the relationship between the contact time between the molten metal and the roll and the thickness of the sheet, it is possible to estimate the thickness of the sheet from the experimental conditions. The relationship between the thin plate thickness and the grain size is one in which the thinner the thin plate is, the faster the cooling rate of the thin plate is, resulting in finer grain size. The contact state between the molten metal and the roll greatly affects the grain size, and the minimum average grain size is 72 ㎛. The thin plate produced using this experimental equipment can be rolled, and the rolled sample has no large cracks. The tensile test results show a tensile strength of 303 MPa.

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References

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