Investigation on multi-pass rolling process of micro-feature with complex shape

¹ School of Mechanical and Electrical Engineering, Robotics and Microsystems Center, Soochow University, Suzhou 215131, China
² School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

^* Corresponding author: cjwang@suda.edu.cn

Abstract

The complex shape microchannels is useful for the functional surface with capillary performance. The investigation of multi-pass micro-rolling was carried out using FE simulation and experiments. The effects of parameters, such as reduction of thickness, clearance between two rollers and downward displace of upper-roller, were studied by measure thickness of sheet and the depth of microchannels. It was found that the depth of microchannels increased with decreasing of clearance between two rollers. And, the shape of microchannels was changed from rectangle to complex shape in the second pass “without mould”. After process optimization of process, the multi-pass rolling can be used to fabricate microfeature with complex shape of sharp corner from the viewpoint of capillary performance.