斯太尔（STEYR）重型载重汽车是我国引进的先进车型。该车使用的转向节几何形装复杂（锻件形状复杂系数为0．156，属复杂级），锻造成形难度高，质量要求严，以往主要依赖进口。国内只是在锻锤上小批量生产，且工艺落后，工序多，锻件加工余量大，劳动强度高，生产率较低。本项 Steyr (STEYR) heavy truck is the introduction of advanced models. The steering knuckle used by the car is complicated in shape (complex shape of forgings is 0.156, which is a complex level). Forging and forming are difficult and the quality requirements are strict. In the past, the steering mainly relied on imports. Domestic only in forging hammer on the small batch production, and the technology behind, more processes, forging large allowances, high labor intensity, low productivity. This item