Abstract:Based on benchmark cylindrical cup deep drawing scheme, a cylinder deep drawing scheme was designed to study deep drawability of the high strength steel (HSS) sheet . HSS sheet SPCN440W-NS (1.2mm) was drawn respectively under 70kN and 10kN blank holder force (BHF) conditions, and drawing process was simulated by DYNAFORM software. The test and simulation results showed that HSS sheet SPCN440W-NS had better deep drawability. BHF had great influence on deep drawability of the HSS sheet. Workpiece had better surface quality under 70kN BHF condition, and was easily wrinkled in its flange region under 10kN BHF condition. The simulation accuracy of the DYNAFORM software under 70kN BHF condition was higher than 10kN BHF condition.