The traditional manufacturing methods of aluminum alloy wheels include casting forming and spinning forming, among which casting can be divided into gravity casting and low pressure casting. According to different manufacturing processes, the wheel hub is divided into single piece, two pieces and three pieces according to the structure. Forming Extrusion is performed on a forging die to form the basic shape of the spoke and the rim together, forming the hub as a whole. The two-piece type refers to the sub-forging of the rim and spokes, and the three-piece type refers to the sub-forging of the rim and spokes. The rim is forged from two parts, and the three-piece flange is welded and sealed as one to prevent air leakage. The edge is fixed with screws. The traditional multi-piece aluminum alloy hub spokes and flanges are connected by laser welding or bolts. Laser welding has the advantages of fast welding speed and high welding precision, but has disadvantages such as expensive welding equipment, high energy consumption, and prone to welding defects.
The use of friction stir welding technology to weld the hub means that the spokes are placed on the rim and connected by high-frequency rotary welding joints, so that the parts are connected together due to thermal expansion and contraction under the action of high-temperature melting. The above-mentioned hope can give Everyone brings help. Tags: alloy wheels.