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一、勾形搬手鍛造勾形搬手是裝卸圆形螺帽的工具,規格很多,用途很广,形狀如图1那样。过去采用图2所表示的鍛造工艺。由于这种方法需要切掉一块料头(图中Ⅲ),很費材料;同时胎模又是死的,鍛件边角填充不滿;鍛件从胎模中取出也很困难。周玉岑同志改进的鍛造方法如图3所示,在150公斤夾板錘上每天可以鍛造100多个鍛件(过去每天只能鍛20个左右),并且还可以节省很多材料。
First, the hook shape Hand-forged hook shape Hand is the tool for loading and unloading round nut, a lot of specifications, use a wide range of shapes as shown in Figure 1. Used in the past shown in Figure 2 forging process. Because this method requires cutting a piece of material (Figure Ⅲ), it is expensive materials; the same time die is die, forging corner fillet dissatisfaction; forgings removed from the tire mold is also very difficult. An improved method of forging by Comrade Zhou Yu Cen is shown in Figure 3, which can forge more than 100 forgings per day on a 150-kg splint hammer (in the past only about 20 per day) and can save a lot of material.