解放牌汽车方向机中的转向臂是一个上下不对称,且有较高耳部和深而狭的凹档,比较难锻制的件(图1)。此件大都因耳部充不满而造成废品。后经改革制坯工艺和模具,收到了明显效果,生产率也大有提高。现将我厂锻造转向臂轴的工艺和使用模具介绍如下: 1.下料坯料尺寸为φ80×165,采用圆盘锯下料。 2.制坯过去制坯是将φ80的棒料拍扁,拔摔杆部,制出对称形的坯件(图2)。用这种坯件进行预锻和终锻成形,造成废品, Jiefang card steering arm in the direction of the machine is a vertical asymmetry, and has a higher ear and deep and narrow concave file, more difficult forging pieces (Figure 1). This is mostly due to the ear filling dissatisfaction caused by waste. After the reform of the billet process and mold, has received significant results, productivity has also greatly improved. Now I plant forging steering arm shaft technology and the use of mold described below: 1. Blanking blank size φ80 × 165, the use of disc sawing. 2. Billet In the past, the billet was φ80 bar shot flat, pull the shank, made symmetrical blank (Figure 2). With this blank for pre-forging and final forging forming, resulting in waste,