在空气锤上锻造,常常需要用圆口或方口铁钳夹持锻件进行操作。而该种铁钳比较笨重,不仅劳动强度大,而且钳口根部易折断,既不安全又不方便。为此,我们自制了如图所示的四爪铁钳,用于夹持φ100mm圆钢或方钢,进行热切下料或延伸操作,使用轻巧方便,效果较好。锻造工艺1.选用低碳钢材料计算下料;2.加热后锻出钳把部分;3.头部压 Forged on air hammer, often need to use a round mouth or square iron wrench holding forgings for operation. The kind of tong is bulky, not only labor-intensive, but also easy to break the root of the jaw, neither safe nor convenient. To this end, we made a self-made four-claw iron pliers as shown in the figure, which are used for holding φ100mm round steel or square steel, and are hot-cut or extended. The utility model is light and convenient and has good effect. Forging process 1. Selection of low carbon steel material cutting; 2. After heating forging part of the clamp; 3. Head pressure