Effect of Shear Clearance on Shear Section Quality and Microscopic State of Deformation Zone of Non-oriented Electrical Steel Sheet
In this paper,the non-oriented electrical steel with thickness of 0.50mm is subjected to oblique cutting test under the opposite lateral clearance of 2%-12%of the thickness of the plate.The cross section of the shear fracture was examined by SEM and statistical analysis and by metallographic and microhardness distribution.The experimental results show that the maximum value of the three-way shear force increases with the lateral clearance increases,and the ratio of the lateral force to the tangential force increases,but the increase of the shear force in the relative clearance is less than 10%; the area of plastic deformation zone increases and the microstructure flow becomes violentsourced by the shear clearance increases,leading the height of the rollover increases,the shear zone decreases,the fracture zone increases,the fracture angle becomes larger and the burr becomes larger.In addition,the shear clearance increases,the depth of the hardened layer increases,the maximum hardness increases first and then decreases,and the maximum hardness value appears near the starting point of the fracture.When the lateral direction is 3%-5%,the shear section with smooth section,shear plastic deformation zone and less degree of work hardening can be obtained.When the lateral direction is 5%,the shear section with smooth section,shear plastic deformation zone and less degree of work hardening can be obtained.
electrical steel shear clearance surface morphology work hardening shear force
Zhu Yiwei YAN Qiusheng LU Jiabin OUYANG Bing
Guangdong Universtiy of Technology,Guangzhou 510006 China
国际会议
第十七届国际制造会议(The 17th International Manufacturing Conference in China)(IMCC 2017))
深圳
英文
1-6
2017-11-23（万方平台首次上网日期，不代表论文的发表时间）