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With the continuous development of the trend towards automotive lightweighting, more and more body components are beginning to use aluminum alloy materials to replace traditional steel. This material shift has brought significant changes and challenges to the tightening process.

Steel has a higher yield strength and tensile strength, so it can withstand greater preload forces during tightening. Typically, steel connections use high-strength bolts and apply larger tightening torques. In contrast, aluminum alloy materials have lower strength and are prone to plastic deformation or thread damage during tightening. Additionally, aluminum has a higher coefficient of thermal expansion, and changes in temperature can have a significant impact on the stability of the connection. Therefore, in aluminum connections, gaskets are often added to provide greater elastic deformation to cope with these characteristics.

In actual tightening operations, steel components are typically considered hard connections, while aluminum components are considered neutral connections. This means that the tightening angles after contact are different for the two materials. Since aluminum components are more prone to deformation, a larger rotation angle is usually required to achieve the same axial force value. This requires tightening tools to accurately control torque and angle under different material conditions to avoid bolts being too loose or over-tightened.

Danikor's tightening tools, with their self-developed high-precision algorithms, can support multiple tightening strategies, including torque control (accuracy up to ±2.5%, and ±1.67% for sensor-based models), angle control, and yield point control. This multi-strategy tightening mode can meet the tightening needs under different material and working conditions. This means that Danikor's tightening tools can accurately control the tightening torque and angle according to the different material properties during the tightening process of steel and aluminum components, ensuring the correctness and reliability of each tightening operation.

In addition, Danikor's tightening tools are equipped with data acquisition and upload functions, which can transmit tightening data in real-time to the MES system, enabling full-process monitoring and quality traceability of the production process. This not only helps to improve production efficiency but also ensures the stability and consistency of product quality.

There are significant differences in tightening steel and aluminum components in automotive body assembly. Danikor's tightening tools, with their high-precision control and multiple tightening strategies, can effectively address these differences and provide reliable tightening solutions for the automotive manufacturing industry.