한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제32권9호
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  • Pages.793-798
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  • 2015
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
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마이크로 딥 드로잉 공정에서 박판소재의 크기효과 및 성형성에 관한 실험적 연구

Experimental Study on the Size Effect and Formability of Sheet Materials in Microscale Deep Drawing Process

  • 남정수 (성균관대학교 대학원 기계공학과) ;
  • 이상원 (성균관대학교 기계공학부) ;
  • 김홍석 (서울과학기술대학교 기계.자동차공학과)
  • Nam, Jung Soo (Department of Mechanical Engineering, Graduate School, Sungkyunkwan University) ;
  • Lee, Sang Won (School of Mechanical Engineering, Sungkyunkwan Universtiy) ;
  • Kim, Hong Seok (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
  • 투고 : 2015.02.04
  • 심사 : 2015.07.22
  • 발행 : 2015.09.01
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초록

This study investigates the effects of the size of copper sheets on the plastic deformation behavior in a microscale deep drawing process. Tensile tests are conducted on the copper sheets to study the flow stress of the materials with different grain sizes before carrying out the microscale deep drawing experiments. After the tensile tests, a novel desktop-sized microscale deep drawing system is used to perform the microscale deep drawing process. A series of microscale deep drawing experiments are subsequently performed, and the experimental results indicate that an increase in the grain size results in the reduction of the deformation load of the copper sheets due to the effects of the surface grain. The results also show that the blank holder gap improves both the formability of copper sheets and the material flow.

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참고문헌

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