基于有限元模拟的四通阀体多向模锻工艺研究

针对阀体传统制造工艺效率低、锻件性能差、成本高等问题,本文提出采用先进的多向模锻工艺进行阀体制造,并以一种不等径四通阀体为典型对象,结合Deform-3D数值分析进行工艺研究.首先,根据不等径四通阀体的结构特征,确定了分模面,并依此设计了两种锻件图;其次,根据锻件图设计了 3种不同的多向模锻结构,并分别确定了模具的加载...

Multi-directional die forging process for four-way valve body based on finite element simulation

In view of the problems of low efficiency, poor forging performance, and high cost of traditional manufacturing process for valve body, an advanced multi-directional die forging process was proposed. A four-way valve body which has unequal diameter was taken as the typical object, and the process was studied combined with Deform-3D numerical analysis. Firstly, on the basis of the structural characteristics of the four-way valve body, the parting surface was determined and two forging drawings were designed accordingly. Secondly, three different multi-directional die forging structures were designed according to the forging drawings, and the loading forms of the dies were determined respectively. Finally, modeling analysis was carried out based on Deform-3D, and the forming process, equivalent strain, and forming load of the valve body under three die structures were compared. Results show that when the connecting skin of the valve body forging located in the middle, the upper punch structure was the combined punch structure, and the lower punch was the moving die, the simulated valve body forging was fully filled with good quality and no defects. The die was less loaded with short forming time, which was conducive to improving the production efficiency. Based on the analysis results, the trial production of four-way valve body was carried out. The obtained valve body has complete surface forming, good flange quality, and uniform and continuous internal streamline, which demonstrates that the multi-directional die forging process is feasible for manufacturing valve bodies.