汽车半轴是汽车上的易损件,平均寿命约四年.以全国拥有200万辆汽车、每年更换25%的汽车半轴计算,半轴需要量为50万件. 在大批量生产的汽车厂里,半轴锻件采用平锻工艺制造;在一般的汽车配件厂及锻造厂里,大多采用落后的锤上胎模锻工艺制造.在平锻机上锻造半轴,工艺先进,生产率高,适用于大批量生产.但由于一次性投资多,生产批量不大的中小型工厂则难于购置贵重的平锻 Automobile axle is wearing parts on the car, the average life expectancy of about four years to the country has 2000000 cars, 25% of the annual replacement of the car axle calculation, the semi-axle needs to 500000. In mass-produced cars In the factory, the semi-shaft forgings are made by the forging process, and in the general auto parts factories and forging factories, most of them are manufactured by the backward hammer forging process. Forging the semi-shafts on the forging machine with advanced technology and high productivity. However, due to the one-time investment, small and medium-sized factories with small production volume are hard to purchase expensive flat forging