复杂阀体的闭式多向模锻工艺

介绍了一种较为复杂的两端不对称、侧壁有凸台的复杂阀体多向模锻工艺,包括从原材料快速加热、制坯、去氧化皮、模锻、冲孔以及锻件输送、模具冷却润滑等整套工艺流程。通过数值模拟,对阀体在多向模锻中的关键工序进行有限元分析,寻找最佳的成形方案,再通过实际生产验证,对数值模拟的结果做进一步验证及修正。实际产出的阀体锻件完全符合设计要求,且其金属流线连续完整,整体力学性能较以往工艺有较大提高。整套工艺可节省约80%的劳动及约70%的后续金属切削余量。

Closed multi-direction mold forging process of complex valve body

A complex mold forging process of a complicated valve with asymmetrical ends and side walls was introduced including the rap-id heating of raw materials, billets, removal of oxidation skin, mold forging, punching and forging conveying, mold cooling, lubrication and other complete process. Then, the key processes of the body in the multi-direction mold forging were analyzed by numerical simulation to search for the optimized forming method, and the results of numerical simulation were verified and corrected by the actual production verification. Therefore, the actual output of the body forgings fully met the design requirements, and the metal flow was continuous and complete. Thus, the overall mechanical properties were improved greatly comparing with the previous process, and the whole process could save labor about 80% and the subsequent metal cutting allowance about 70%.