连杆是柴油机的主要运动件之一,是柴油机的心脏,因此,用18CrNiWA优质合金钢经模锻而成毛坯。由于连杆大头和杆部截面积相差较大,机械加工要求小头增大高度和大头相同,如图1所示,这就给模锻锤上制坯增加了困难,就是采用自由锻和胎模联合制坯也是不容易的。我们经过反复试验,得到了一种比较好的胎模制坯工 The connecting rod is one of the main moving parts of the diesel engine and is the heart of the diesel engine. Therefore, roughing is made by using 18CrNiWA high-quality alloy steel forging. Due to the large difference between the connecting rod and the rod cross-sectional area, the machining requirements of the small head to increase the height and bulk of the same, as shown in Figure 1, which gives the die forging hammer on the increased difficulty, that is, using free forging and fetal Die joint billet is not easy. After repeated tests, we got a better tire mold billet