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논문 기본 정보

자료유형
학술대회자료
저자정보
백승철 (부산대학교) 강충길 (부산대학교) 강석봉 (한국기계연구원)
저널정보
한국소성·가공학회 한국소성가공학회 학술대회 논문집 2010년도 한국소성가공학회 춘계학술대회 논문집
발행연도
2010.5
수록면
382 - 385 (4page)

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Magnesium, which is the lightest amongst metals, has excellent material properties, such as specific strength and stiffness, ability to be cast, ability to be machined, vibration and shock-absorption ability, and fatigue resistance. As the supply of portable electronic devices, such as laptop computers and mobile phones, has been increasing, the demand for new material that possesses the attributes of recyclability and durability as well as the ability to effectively shield electromagnetic waves, which are harmful to human beings, has increased. Thus, this study aims to predict the heating time by which the temperature of the material reaches the desired temperature given a range of 150-350℃ for the die temperature. Moreover, thus far, studies about the deep drawing of magnesium sheets have focused mostly on the forming limit, microstructural change, and anisotropy that arise from rectangular, circular deep-drawing and piercing process However, research has not been reported on the effect of the clearance between the die and punch on the change in the thickness of the material, when complex shapes, such as those of electronic and automobile components, are formed by three deep-drawing. Thus, this study predicts the change in the material thickness and the forming depth at the firs forming process that produces the rectangular cup by the deep drawing of the rectangular blank. To experiment of three step deep drawing, The used magnesium sheet is fabricated with twin roll strip casting and its rolling process. The other magnesium sheet to deep drawing is fabricated by extrusion process. After three step deep drawing with rectangular shape circular shape and piercing process, respectively, the formability and thickness variation has been investigated for variation of punch speed and forming temperature.

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Abstract
1. 서론
2. 실험 장치 및 방법
3. 실험결과
4. 결론
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