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논문 기본 정보

자료유형
학술저널
저자정보
김진호 (Samsung Advanced Technology) 홍석무 (Samsung Global Production Technology Center) 이종찬 (Kumoh National Institute of Technology)
저널정보
한국기계가공학회 한국기계가공학회지 한국기계가공학회지 제12권 제3호
발행연도
2013.6
수록면
7 - 12 (6page)

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초록· 키워드

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In Die casting process, the problem of die degradation is often issued. In oder to increase of die life the material degradation of die steel was investigated using test core pins. Three test core pins were positioned in front of the gate entry and observed washout and soldering resistance during Mg die casting process. The test parameters are set as different commercial die materials, coatings condition and hardness of die surface. Usign 220t magnesium die casting machine was employed to cast AZ91 magnesium alloys. After 150 shots, macroscopic observation of die surface was carried out. Additional 50 cycles later, test pins were chemically cleaned with 5% HCl aqueous solution to find out the existence of washout and soldering layers. Microstructural characterization of die surface and the die roughness measurement were performed together. Computational simulation using AnyCasting program was also beneficial to correlate the extent of die damage with the position of test pin inside die cavity. As results, the optimal combination of die steel with productive coating as well as its hardness was drawn out. it will be helpful to decide the material and condition considering increasing of tool life.

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ABSTRACT
1. 서론
2. 다이캐스팅 금형
3. 가속 실험 방법 및 장비
4. 실험 결과 및 고찰
5. 결론
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UCI(KEPA) : I410-ECN-0101-2014-580-002948370