针对电站锅炉用大型截止阀阀体的制造 ,提出了“剪切挤压”新工艺 ,并利用模拟实验和工艺实验的方法对剪挤工艺进行研究 ,通过 DN1 0 0大型 1 2 Cr Mo V合金钢截止阀阀体在较低吨位压力机上成功地锻造 ,进一步验证此工艺的可行性和优越性。另外 ,此工艺还可用于大型闸阀阀体、三通管等枝杈类零件的制造。 Aiming at the manufacture of the large-scale valve body for boiler in power station, a new technology of “shear extrusion” was put forward. The shear extrusion process was studied by the simulation experiment and the process experiment. Through DN1 0 0 large scale 1 2 Cr Mo V alloy The steel stop valve body was successfully forged on a lower tonnage press to further verify the feasibility and superiority of this process. In addition, this process can also be used for large gate valve body, tee and other branches of the manufacture of parts.