TC4钛合金锥形辊斜轧穿孔曼内斯曼效应

To control the temperature rise of TC4 titanium alloy cone-type roller cross piercing process, reduce the piercing resistance and the energy consumption and obtain the ideal microstructure, the study on the Mannesmann effect of cone-type roller cross piercing was carried out.By comparing the rotary forging test of TC4 titanium alloy and 45 steel, it is confirmed that the two-way tensile stress exists in the core of both the two materials,and the spread tensile stress of TC4 titanium alloy is larger and the axial tensile stress is smaller than that of 45 steel. Using the Simufact Forming finite element simulation technology, the compression ratio and stress strain evolution law were analyzed. It is found that the Mannesmann effect is the most obvious when the deformation amount is about 4%-6%. The preparation of TC4 titanium alloy tube is successfully realized with 5% top reduction rate, and the temperature rise is effectively controlled, and the ideal duplex microstructure is obtained.