The casting technology of automobile aluminum alloy wheel hub has been widely used in recent years. The application principle, type, casting process and application advantages of this technology are described in detail in order to better understand this technology and lay a foundation for promoting the development of technology.
1. Technical application principle
The composition of automobile wheel hub is mainly related to two points, one is the need to connect with the vehicle body, and the other is the need to connect with the tire. When the car body connects some axles and wheels, the problem of spokes and offset should be considered. The tyre connection part is designed with slot bottom, bead seat and valve hole to support the tyre. In the specific casting process, it is necessary to fully consider the casting demand and the current actual casting conditions, and reasonably select the appropriate casting process, such as gravity casting, low pressure casting, forging, etc., especially considering the impact of the wheel hub on the stability of the tire, especially emphasizing that in the case of many technology choices, special attention should be paid to strengthening the application of squeeze casting and forging.
In addition, in the technical application process, attention should be paid to the casting materials, parameter settings and heating treatment, which are the key factors affecting the casting quality during the wheel hub casting process and need to be effectively guaranteed.
2. Features of automobile aluminum alloy wheel hub
The characteristics of automobile aluminum alloy wheel hub can be described in detail from two aspects. One is the advantages: the aluminum alloy wheel hub is light in weight, which can reduce the energy consumption of automobile and reduce environmental pollution during driving; The thermal conductivity of aluminum alloy wheel hub is weak, and it will not cause tire burst due to heat generation and heat conduction of automobile brake, reducing the possibility of safety accidents; The aluminum alloy wheel hub can further reduce the impact of vehicle vibration and cushioning, and improve the overall comfort of the vehicle in the case of matching with the radial tire; The wheel hub made of this material technology has good fluidity and tension characteristics. After polishing, its appearance is more beautiful, especially its surface is supported by anti-corrosion treatment technology, and its appearance is maintained for a long time. The second is the disadvantages: the hardness of aluminum alloy wheel hub is lower than that of steel wheel hub, and sand holes and cracks are easy to occur during production and use, which affects its safety performance; The price of aluminum alloy wheel hub is high, and if it is used in the manufacture of tubeless vehicles, it is easy to cause the problem of insufficient internal air. On the whole, the applicability of aluminum alloy wheels is strengthened, which is also the reason why they are widely used in the current market environment.
3. Casting process
The manufacturing process of aluminum alloy wheel hub is mainly completed by the following steps: the first step is to analyze the casting process. The specific analysis process should be carried out in combination with the casting requirements and existing conditions, draw drawings, design abrasives, etc., and reasonably set the construction parameters on the basis of determining the casting process; The second step is to complete the pouring, heating treatment and other work according to the design drawings. After the pouring is completed, check the casting, trial processing, correction of abrasive tools, trial production, etc., so as to form the process documents through comprehensive review; Finally, summarize the whole casting process and archive the documents involved.
4. Application advantages
Compared with the wheel casting technology of other materials, aluminum alloy wheel casting has the following advantages: first, the advantages of energy saving and simplicity are reflected, which is directly related to the material characteristics of aluminum profiles. Its light weight can have a positive impact on the vehicle braking process, reduce energy consumption, improve acceleration performance, and reduce environmental pollution on the premise of reducing the body weight. Secondly, it has excellent performance advantages. Under the condition of achieving high-precision separation from the tire, it shows good shock absorption performance, and has good heat dissipation performance, which can effectively avoid the problem of tire burst caused by high driving temperature, and overall shows good comfort experience.
5. Application necessity analysis
In the current social development, with the gradual improvement of living standards and quality of life, people pay more attention to quality enjoyment of daily life and travel. In addition, the awareness of green and environmental protection has been gradually strengthened. In the process of finding suitable materials to meet the above comfort experience and environmental protection needs, the aluminum alloy wheel casting technology has been developed and widely applied. With its unique advantages of portability, environmental protection, beauty, shock absorption and extended service life, it has successfully conquered consumers and seized the vast majority of the automobile wheel casting market.