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汽车锻件占汽车重量的19～21％。在锻件生产过程中出现的缺陷主要是变形、毛刺、充不满、氧化坑、折纹、错差、厚度方向尺寸超差等,虽可采用加热返修法、砂轮磨削法或堆焊等方法进行一定量的修复,但大多数锻件缺陷,如转向节的方形法兰四角充不满、叉口耳部充不满、杆部与法兰连接处的根部折纹、前轴限位角处充不满、曲轴法兰处充不满等仍无法修复,会造成一定数量的废品率。1981年我厂转向节锻件废品率为3.75％。如将汽车用的全部锻件进行修复,可取得较大的经济效益。
Automotive forging accounts for 19 ~ 21% of the weight of the car. Defects in the production process of forgings are mainly deformation, burrs, dissatisfaction, oxidation pits, creases, misalignment, oversize in the direction of thickness, etc. Although the methods such as heating rework, wheel grinding or surfacing can be adopted A certain amount of repair, but most of the forgings defects, such as the steering wheel square flange corner filled with dissatisfaction, fork ear filling dissatisfaction, the rod and the flange connection at the root of the crease, the front axle limit filling at full satisfaction, Filling crankshaft flange, etc. are still unable to repair, will result in a certain amount of rejection rate. In 1981, our factory steering knuckle forgings rejection rate was 3.75%. If the car used for all the forging repair, can obtain greater economic benefits.