Comparative Analysis and Research on Stamping Formability of SPCC Cold-Rolled Steel Plates for Automobiles
In order to assess the superiority of the stamping formability of SPCC cold-rolled steel plates,the formability of SPCC steel was comprehensively compared with six types of steel plates,namely ZK60 plate,08 Al plate,Q235 F plate,IF plate,and TRIP600 plate,through uni-axial tensile test,lug test,and cone cup test.The research results indicate that the yield point of SPCC was relatively low,the yield strength ratio was relatively small(about 0.618),and the elongation after fracture and hardening index were the highest,41.46%and 0.265 respectively.This indicates that the required forming force for plastic forming of SPCC thin plates is low,and the forming performance is also relatively good.The protrusion rate of SPCC was about 6.40%higher than that of TRIP600 high-strength steel and IF steel,and the planar anisotropy of the plate can be reduce by cooling.The cone cup value of SPCC was similar to that of magnesium al-loy,about 45.3 mm,reflecting that SPCC has good comprehensive properties of deep drawing and bulging.
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