冷库自动控制阀门上的法兰盘重十几公斤(图1),材料为25钢。这样的锻件如用常规的胎模锻造方案需要在750公斤的锻锤上进行,但我厂最大的锻造设备只有250公斤空气锤。为了能利用现有设备解决生产实际问题,于是我们设计锻模时综合了开式套模重量轻、闭武套模锻件精度高的优点,采用逐步局部变形的方法,使其两火顺利锻成。锻模分预锻、终锻两套横具,现把锻造过程介绍如下。 Cold storage valve flange on the weight of a dozen kilograms (Figure 1), the material is 25 steel. Such forgings such as the conventional die forging program needs to be carried out on a 750 kg forging hammer, but our largest forging equipment has only 250 kg of air hammer. In order to use the existing equipment to solve the actual production problems, so when we design the forging mold integrated open mold light weight, the advantages of closed mold forging precision, with the gradual partial deformation of the method, the two fire smooth forging . Forging die sub-forging, finally forging two sets of horizontal, now the forging process are described below.