The Study On The Spcciai-shapcd Rolling Process Of Molybdenum Plate

Molybdenum is one of important strategic resources, and many important parts such as high-power semiconductor devices radiator and support plates are made of molybdenum plat-es. Its performance directly influences the performance of molybdenum products. Took the problems of molybdenum plate rolling process as foothold and analyzed each factor in the pr-ocess from the aspect of quality analysis and control of rolling. On the basis of the existing rolling process, studied and simulated special-shaped rolling process of Mo plate. Then optim-ized process parameters, which provided reference for enterprises’ actual production.Firstly, briefly described the existing rolling process of molybdenum plate. From aspects of quality analysis and control of rolling and rolling method and blooming deformation, Ana-lyzed and improved existing hot rolling process of molybdenum plates, so as to study deeply special-shaped rolling process of Mo plate. In order to check plastic of molybdenum plates, made a handle hydraulic bending machine.Then, analyzed briefly some common rolls. Placed emphasis on research of scheme that corrugated profile roll rolling molybdenum plates. Deduced formula among deformation degree and roll section radius, friction coefficient, thickness of plate. Deduced deformation degree formula, speed relations formula. According to related formulas, deduced rolling pressure formula.After that, put forward the optimization design idea of roll shape. Shape symmetry for middle plane of roll and made the axial force of micro body along highly direction is zero and balanced stress on both sides of the molybdenum plate. Besides, the axial force on one side of molybdenum plate should be maximized as possible. Analyzed characteristics of roll shape, extracted the designed variables, established the target function of biggest unilateral axial force, limited these designed variables.Finally, briefly described special-shaped rolling process of molybdenum plate. Accordin-g to the existing literature and actual production in factory and simulation, made process rul-e, Analyzed principal stress, temperature, damage on Mo plates, speed, roll load, special-sha-pe roll wear in special-shaped rolling process simulation. From the aspect of quality analysis and control of rolling, established objective function of integrated circumstance about damage on Mo plates and special-shape roll wear, then designed orthogonal experiment schemes by L9(34), optimized special-shaped rolling process parameters.