Abstract：The causes of cracking during the process of stamping DC06 steel into automotive parts were analyzed by meansofopticalmicroscopy，X-raydiffractmeterandtensiletestingmachine.Theresultsshowedtheplasticstrainratio r of the stamping part in 45° direction was lower than the standard lower limit and the deep drawing advantage texture {111}〈110〉and{111}〈112〉wasless，leadingtothenon-uniformdeformationofthesheetandbaddeepdrawingperfor-mance.As a result，cracking first occured in the stress concentration region in the 45°direction. On this basis，the im-provementmeasureswereputforwardtostudythegenerationandvariationofthetextureinthehot-rolling，cool-rolling and recrystallization annealing process，optimize the production process，and test the improved DC06 steel sheet. The results showed that the DC06 deep drawing plate had a strong γ fiber texture，higher r-value，lower Δr，so the deep drawingperformancewasimproved.
2019, Vol. 37 
