Variable force spring, as a spring that can generate variable force during the force process, its processing process and technical requirements are highly professional and complex. From material selection to forming process, each step is directly related to the final performance and usage effect of the spring.
In the processing of variable force springs, material selection is a fundamental and key link. Usually, materials with high strength, high toughness, and good corrosion resistance, such as stainless steel, alloy steel, etc., are selected according to the design requirements and application environment of the spring. These materials can not only meet the deformation requirements of the spring during the force process, but also maintain stable performance in long-term use.
The main processes for processing variable force springs include cold forming and hot forming. The cold forming process is usually suitable for springs with small wire diameters or complex shapes, such as various circlips, tension springs, torsion springs, etc. In the cold forming process, the material is processed at room temperature and the desired spring shape is formed by extrusion and stretching of the die. The characteristics of this process are simple process flow, which can avoid deformation and decarburization caused by reheat treatment.
In contrast, hot forming is more suitable for springs with larger wire diameters or simple shapes, such as cylindrical and conical springs. In the hot forming process, the material must first be heated and then processed after reaching a certain plastic state. The characteristics of this process are that it can produce springs with larger wire diameters and the product has a high value-added effect. However, the heating temperature and cooling rate must be strictly controlled during the hot stamping process to avoid degradation and deformation of material properties.
In addition to material selection and forming process, the processing of variable force springs also requires strict control of dimensional accuracy and surface quality. Dimensional accuracy is directly related to the assembly and use of the spring, while surface quality affects the corrosion resistance and service life of the spring. Therefore, high-precision equipment and processes must be used during processing to ensure that the size and surface quality of the spring meet the design requirements.
In addition, the processing of variable force springs also requires rigorous inspection and testing. Mechanical property testing, fatigue life testing, and other means can be used to evaluate the performance and reliability of the spring to ensure that it can meet the design requirements in use.
In summary, the processing of variable force springs is a highly technical and professional task. From material selection to molding process, dimensional accuracy and surface quality control, each step must be strictly controlled to ensure the final performance and use effect of the spring. This is the only way to produce high quality and high performance variable force springs to meet various complex and demanding application requirements.
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