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박강판 제조공정에서의 소재 굽힘변형과 잔류만곡 발생 해석

Analysis of Deformation and Residual Curvature of Steel Sheets in Strip Process Lines


In order to analyze the deformation and residual curvature of steel sheets in the strip processing lines, a program for calculating curvature and work hardening of sheet was developed. Strip deformation caused by repeated bending under tension in the process lines was analyzed on the basis of the incremental-plasticity theory with the mixed hardenting model for the purpose of predicting the strip shape and the yield stress change. The developed calculation program was applied to predict curl and gutter of sheets within a 10% difference. The yield stress increment was also predicted with the similar accuracy. Application of the model to tension legvelling process showed that gutter could be controlled by intermesh and elongation. The yield stress increment in the electro-galvanizing line calculated by the developed program was found to be dependent on the yield strength, the applied tension and the diameter of the smallest roll.

참고문헌 (10)

  1. T.Masui;Y.Misaka , Report published at 24rd Japan Associated Conference on Plastic Technology / v.,pp.81, 1973
  2. On the Mechanics of the Tension-Leveling Process , J.M.Roberts;T.Sheppard , Journal of the Institute of Metals / v.99,pp.293-301, 1971
  3. Recent Developments in Tension Levelling , M.G.Kinnavy , Iron and Steel Engineers Year Book / v.,pp.605-610, 1972
  4. Warp control in strip processing plant , T. Masui;Y. Kaseda;K. Ando , ISIJ International / v.31,pp.262-267, 1991
  5. Thickness Reduction of Metal Strip Subjected to Bending-Unbending of Metal Strips Subjaected to Bending-Unbending under Tension and the Uniaxial Tensile Characteristics of These Prestrainned Sheet Metals , T.Kuwabawa;K. Watanabe , Journa of the JSTP / v.34,pp.171-178, 1993
  6. The Tension-Roller-Levelling Process-Elongation and Power Loss , E.J.Patula , Journal of Engineering for Industry / v.101,pp.269-277, 1979
  7. Constitution for Engineering Materials , W.F.Chen , Plasticity and Modelling / v.2,pp., 1994
  8. Strip stiffness as the deciding factor in the choice between different tensiometer principles , Egil Angeid , Iron and Steel Engineer Year Book / v.,pp.281-291, 1964
  9. Shape correction of Steel strip tension leveller , Y. Misaka;T. Masui , Transaction ISIJ / v.18,pp.475-484, 1978
  10. Y.Misaka;T.Masui , Report published at 23rd Japan Associated Conference on Plastic Technology / v.,pp.559, 1972

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