Abstract��The sheet forming test machine and the grid strain automatic measurement and analysis system were used to carry out the forming limit test and performance analysis of the hot-dip galvanized steel sheet. The results showed that the zinc layer had a worsening effect on the hot deformation of hot-dip galvanized steel sheet�� and the FLC of the galvanized steel sheet after dissolving the zinc coating should be reduced to 25%�� so as to ensure the enough safety margin. The strain hardening exponent[n]value in uniaxial tensile properties had a strong correlation with the forming properties. The higher the[n]value�� the higher the FLC�� the better the stamping forming performance of the sheet. Combined with the forming limit diagram��the strain area�� deformation mode and safety margin of galvanized steel in the actual stamping process were analyzed. It provided a reference for the research of the formability of hot-dip galvanized steel sheet.
2018, Vol. 36 
