소성∙가공 (Transactions of Materials Processing)

  • 제1권1호
  • /
  • Pages.75-86
  • /
  • 1992
  • /
  • 1225-696X(pISSN)
  • /
  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

각종 도금강판의 신장성형시 마찰계수측정

Measurement of Friction Coefficient in Stretching of Coated Steel Sheets

  • 권재욱 (서울대학교 공과대학 금속공학과) ;
  • 김인수 (금오공과대학 재료공학과) ;
  • 이동녕 (서울대학교 공과대학 금속공학과)
  • Kwon, Jae-Wook (Dept. of Metallurgical Engineering, Seoul National University) ;
  • Kim, In-Soo (Dept. of Materials Science and Engineering, Kum-Oh National Institute of Technology) ;
  • Lee, Dong-Nyung (Dept. of Metallurgical Engineering, Seoul National University)
  • 발행 : 1992.09.07
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초록

Coated sheet steels have been increasingly used in automotive industry for improving corrosion resistance. One of the arised concerns is frictional behavior of coated sheet steel in stamping process. But analyses of the frictional behavior are complex and difficult. A tensile strip test has been developed for evaluating friction under the condition which simulate the stretching of sheet. Tests are conducted under different die radius and lubrication conditions. Electro-galvanized steel sheets show a lower coefficient of friction than bare steel sheets whose coated layers have been chemically removed. The coefficients of friction are independent of die radius.

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