Research on the precision bending of a workpiece with a complicated cross-section for manufacturing a large flange

The Research of Surface Residual Stress about Glass Ceramics

“…Microcrystalline glass which has super-low thermal expansion coefficient is an excellent structure materials, it has excellent mechanical characteristic and chemical stability at high temperature, it has wide application in many key equipments of aerospace, space object detection and other cutting-edge technology field [1,2].But the strength, long-term stability, image quality, coating quality and resistance to laser damage and other important performance indexes of microcrystalline glass are directly reduced by the existence of the residual stress after ultra-precision machining. Therefore the research and testing for surface residual stress of microcrystalline glass has important implication to improve optical processing quality.…”