In the past, the car modification industry adopted a relatively conservative attitude; in recent years, although the car modification industry did not form a norm, but the policy has relaxed the attitude of car modification, not only open the body color and the limitations of the front and rear shape, even the hub The style can also be changed (remaining original size). For some car owners who are pursuing individuality, this is undoubtedly good news.
Since the unsprung mass is related to the response speed of the wheel, in the currently allowed modifications, upgrading the hub will have a greater impact on the performance of the vehicle. Even with the same size of the wheel, the mechanical properties and weight will be different when using different materials and processing techniques. In terms of materials, aluminum alloys are naturally better than steel. So do you know about the various processing techniques of aluminum alloy wheels? The following ODM Flow Forming Wheels Manufacturer will come to tell you.
1. Gravity casting
Casting is the most basic process in the metalworking industry. As early as in prehistoric times, people knew how to use copper to make weapons and other utensils. It heats the metal to a molten state and pours it into a mold to cool it. The so-called "gravity casting" is to fill the entire mold with liquid aluminum under the action of gravity. Although this production process is cheap and simple, it is difficult to ensure the consistency inside the rim, and it is easy to generate bubbles, and its strength and yield are relatively low. This technology has been slowly eliminated.
2, low pressure casting
Low-pressure casting is a casting method in which liquid metal is pressed into a mold by gas pressure, and the casting is crystallized and solidified under a certain pressure. This method allows the liquid metal to quickly fill the mold, because the gas pressure is not too strong, so the metal density can be increased without entraining the air. Compared with gravity casting, the low-pressure cast Aluminum Alloy Wheels has a denser internal structure and higher strength. Low-pressure casting has high production efficiency, high product qualification rate, good mechanical properties of castings, high utilization rate of aluminum liquid, and is suitable for large-scale production. Most of the low-end casting wheels are currently used in this process.
Aluminum Alloy Wheels
3. Spinning casting
Spinning is a bit like a pull in a ceramic process. It is based on gravity casting or low-pressure casting, and the rim is gradually elongated and thinned by the rotation of the aluminum crucible itself and the extrusion stretching of the rotary cutter. The rim is hot-spinned and has obvious fiber flow lines on the structure, which greatly improves the overall strength and corrosion resistance of the wheel. Due to the high strength of the material, the light weight of the product, and the small molecular spacing of the material, it is a well-received process on the market.
4, one-piece forging
Forging is a processing method in which a forging press is used to apply pressure to a metal blank to cause plastic deformation to obtain a forging having a certain mechanical property, a certain shape and a size. The forged aluminum blank has a denser internal structure, and the forging process allows for better heat treatment of the metal for better thermal performance. Since the forging process can only process a single piece of metal embryo, it cannot form a special shape. Therefore, after the forging of the aluminum embryo, a complicated cutting and grinding process is required, and the cost is also much higher than the casting process.
5, extrusion casting
The forging process facilitates the machining of complex parts, the forging process gives the parts better mechanical properties, and the extrusion casting combines the advantages of both. This process involves pouring the liquid metal into an open vessel, and then the high pressure punch presses the liquid metal into the mold and fills, shapes and cools the crystal. This processing method effectively ensures the compactness inside the hub, and the mechanical properties are close to the integrated forged hub, and the remaining material to be cut is not too much. At present, a considerable number of wheels in Japan have adopted this processing method. Due to the high degree of intelligence, many companies have squeezed casting as one of the production directions of automobile wheels.
The above is about the processing technology of aluminum alloy wheels, I hope to help everyone, and if you have a need for the wheel, you can contact us, we can provide you with a variety of wheels including Customized Flow Forming Wheels, welcome everyone to buy.