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将Ф25 mm 的 TC11 钛合金棒材在四机架 Y 型轧机上连轧至Ф17 mm,孔型系统选为平三角-圆-平三角-圆。试验测试了轧件入口温度为 950 ℃时在四机架连轧过程中的温降,以及轧件温度为 750, 850, 950, 1050 ℃时不同压下量对应的轧制力、轧制力矩值;分析了轧件在不同孔型中轧制时的变形区几何形状;修正了轧制力数学模型;计算值与试验值偏差较小。因此,该数学模型计算的轧制力可以为 Y 型三辊轧制钛合金棒材提供理论研究和工程实践基础。
The Ф25 mm TC11 titanium bar was continuously rolled to Ф17 mm on a four-stand Y-rolling mill. The hole system was selected as a flat triangle-circle-flat triangle-circle. The temperature drop in the process of four-stand continuous rolling with the inlet temperature of 950 ° C was tested and the rolling force, rolling moment and rolling moment corresponding to different reduction amounts of rolling materials at 750, 850, 950 and 1050 ° C were tested. The geometrical shape of the deformation zone during the rolling of different rolling patterns was analyzed. The mathematical model of the rolling force was revised. The deviation of the calculated value from the experimental value was small. Therefore, the rolling force calculated by the mathematical model can provide theoretical research and engineering practice basis for the Y-type three-roll rolled titanium alloy bar.