The integral automobile drive axle housing is a new axle housing with new material, new technology and new structure. 1. The material is made of special seamless steel tube. The tensile strength of the axle housing reaches 680, the bending strength is 550, and the elongation is over 15%. 2, the technology uses cold expansion molding, special treatment of axle tube shrinkage. 3. The structure of the pipa hole and the two ends of the axle tube are wholly molded and are of different wall thickness. 4. Because of the special material, advanced technology and reasonable structure, the bridge shell greatly improves its mechanical properties. The rigidity is better than the flushing bridge shell, the plasticity is better than the cast bridge shell, and there is no weld between the body and the shaft tube, and the unequal thickness is reached. It has the advantages of the blanking bridge shell, and it has the advantages of the casting process. It fully embodies the safety and reliability of the bridge shell and the lightweight of the bridge shell (about 15% lighter than the flush welding bridge shell). It is more suitable for buses, highways and some engineering vehicles. The bridge shell has been identified by national scientific and technological achievements. The conclusion is: fill the gap in the country and reach the leading level in China. There are 5 invention patents and 10 utility model patents. The products are mainly FAW, Han De, North Ben, An Kai, Hualing, Fang Sheng, Yutong, Sany and South Korea.
