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EnglishStud: the perfect combination of high strength and corrosion resistance
The stud, as the main part of the double head hub bolt, is not only the core of transmitting the wheel load, but also the foundation to ensure the stability and reliability of the entire connection system. It is usually made of high-strength, corrosion-resistant metal materials, such as high-strength alloy steel or stainless steel. The selection of these materials is designed to meet the stringent requirements of vehicles operating in extreme environments.
The length and diameter of the stud are not set arbitrarily, but are precisely calculated and customized according to the specific model and wheel size. In terms of length, it is necessary to ensure that the stud can penetrate the wheel hub and fully cooperate with the nut on the wheel or wheel disc to form an effective clamping force; the diameter is directly related to the load-bearing capacity of the bolt. The larger the diameter, the stronger the shear and tensile resistance of the bolt, so that it can better cope with various dynamic loads during driving.
In addition, the surface treatment of the stud should not be ignored. Common treatment methods include galvanizing and Dacromet coating. These measures not only enhance the corrosion resistance of the studs and extend their service life, but also reduce the risk of thread damage caused by corrosion, ensuring smooth screwing in and out of the bolts.
Positioning flange: guarantee of precise installation
A positioning flange is often designed in the middle of the stud. This seemingly simple structure actually contains extremely high technical content and practical value. The main function of the positioning flange is to provide precise positioning guidance during the bolt installation process, ensuring that the bolts can be accurately inserted into the reserved holes on the hub, avoiding safety hazards caused by misaligned installation.
The design of the positioning flange often takes into account the structural characteristics of the hub and the limitations of the installation space. It is necessary to ensure that the flange can pass through the installation hole of the hub smoothly, and to ensure that after installation, the flange can effectively prevent the bolt from moving in the axial direction, thereby enhancing the stability and reliability of the bolt installation.
It is worth noting that the material and size of the positioning flange are also carefully selected to ensure sufficient strength and rigidity to withstand the impact force during installation, while avoiding installation difficulties due to oversize or poor positioning due to undersize. Therefore, the design of the positioning flange is a comprehensive application of knowledge in materials science, mechanical principles, and manufacturing processes.
Considerations in practical applications
In practical applications, the design of the studs and positioning flanges of the double head hub bolts also needs to consider factors such as the vehicle's driving environment, frequency of use, and maintenance costs. For example, for vehicles that often drive on harsh road conditions, it may be necessary to use materials with higher strength grades and increase the length of the studs to improve the overall strength of the connection system; for models that require frequent tire changes, the design should focus on the easy disassembly and assembly of the bolts to ensure that maintenance personnel can quickly and accurately complete the replacement of the bolts.
