差压计模锻成形工艺方案分析

Die forging process analysis of the differential gauge

根据差压计锻件形状特点,详细分析了锻件采用可分凹模多向闭塞精密模锻工艺方案的可行性.差压计锻件可以采用普通开式模锻成形和可分凹模多向闭塞精密模锻成形.开式模锻工艺简单,但是需要制坯,工艺流程长,材料利用率低.可分凹模多向闭塞精密模锻能一步顺利成形锻件,产品质量高,工艺稳定,材料利用率可提高20%～30%,但是若在普通模锻设备上生产,模具结构复杂;专用多向模锻设备通用性低;在大批量生产时,采用专用设备生产效益好.本文用塑性成形模拟软件Deform-3D对多向闭塞精密模锻进行了模拟分析,验证了该工艺方案的可行性.

In this paper, according to the shape character of differential gauge, a feasible scheme is analyzed in detail by which the forging is manufactured in a horizontal split precision closed die from three horizontal directions. The differential gauge forging can be made by general open die or horizontal split precision closed die. Though the technology of open die is simple, it has shortcomings such as, needing blank （s） making, longer technological line and lower rate of material usage ratio. The forging can be successfully shaped once by horizontal split precision closed die with such advantages as higher forging quality, stabile process, material usage ratio which is 20%-30% higher compared to that of the open die. However, the structure of the closed precision mould mounted on the general forging machine is complex; the simplicity of the die in the special forging machine is at the cost of lowering the universal property of the machine. When the batch is very big, the higher profit can be gained by using the special forging machine. The model is simulated on the Deform-3D software and the closed die forging process is confirmed rightly.