Aluminum alloy has begun to be used more and more in the electric vehicle industry. At the same time, aluminum alloy material is also the most widely used metal in all walks of life. The output of aluminum alloy is second only to steel. Aluminum alloys generally have processes such as casting, forging and die casting in the industry.
Different processes meet different application requirements. Among them, aluminum alloy forging has a series of excellent characteristics. After forging, the metal structure of the aluminum alloy can be changed, and the performance of the aluminum alloy can be effectively improved.
Characteristics of aluminum alloy forging
First of all, the internal organization is fine, uniform and defect-free, and its reliability is far away. It can be processed into high-precision forging with complex shapes, and the machining allowance is small, only about 20% of the machining allowance of the aluminum alloy drawing thick plate, which greatly saves man-hours and costs. Second, the thermal conductivity is good.
The forging temperature range is narrow, and the requirements for the forging temperature are always strict. The performance characteristics of heating die forging are that the aluminum alloy does not produce allotropic transformation. It mainly depends on the correct control of the forging mechanical parameters to improve the metal structure, so that the metal streamline is uniformly and continuously distributed along the forging shape. to improve mechanical properties.
Forged aluminum wheels have high density, no porosity, pinholes, and no pores on the surface, and have good surface treatment performance. The coating is uniform and consistent, with high bonding force, and the color is harmonious and beautiful. Forged aluminum wheels have good machinability. It can be seen that forged aluminum wheels have light weight, high specific strength, good toughness, fatigue resistance and corrosion resistance, good thermal conductivity, and easy machining.
Based on the above characteristics of aluminum alloy forging, if the electric vehicle needs to reduce the weight of the whole vehicle, then the steering wheel connecting plate can be made of aluminum alloy forging process, and the rear shock absorber can also be made of aluminum alloy material. Can greatly reduce the weight of the vehicle. The whole front fork of the following products is only 2.85kg, and the rear fork is only 1.35kg.
Aluminum alloy forging process
Forging production occupies a very important position in the industrial industry. Aluminum alloy is also a commonly used material in forging. All kinds of forging that can be forged with low carbon steel can be forged with aluminum alloy. Most of the alloy forged parts are safety parts, and they are mass-produced, so the inherent quality requirements of aluminum alloy materials are very high.
Forged aluminum alloy parts generally go through the following main manufacturing processes: alloy smelting – casting – extrusion – forging – heat treatment – machining. Alloy smelting composition distribution ratio, degassing, filtration, casting reverse segregation, extrusion process quality, forging (aluminum alloy forging) metal streamline, heat treatment temperature, time, grain size control, dimensional accuracy, etc., require a very systematic process control to achieve stability.