If the stainless steel torsion spring has insufficient elastic force after installation, it is necessary to analyze the possible reasons from multiple aspects and take targeted adjustment measures. First, check whether the installation process is standardized, because the wrong installation method may directly cause the spring to fail to perform normally. For example, if the torsion center of the spring is not aligned during installation, or the fixed position is deviated, the spring will generate additional lateral force when it is stressed, resulting in insufficient actual elastic force output. At this time, it is necessary to recheck the installation drawings to ensure that the axis of the spring is completely aligned with the rotation axis of the equipment, and the connection between the fixed end and the movable end is firm and reliable to avoid elastic force loss caused by installation errors.
Secondly, whether the specifications of the stainless steel torsion spring itself match the equipment requirements is a key factor. If the load calculation is incorrect during selection, the selected spring wire diameter is too thin, the number of turns is insufficient, or the torsion arm length is inappropriate, the elastic force will not meet the use requirements. At this time, it is necessary to recalculate the torque value required by the equipment, refer to the technical parameter table of the spring, and confirm whether it is necessary to replace the spring with a thicker wire diameter, more turns or longer torsion arm. For example, under the same material, increasing the number of coils of the spring can increase its energy storage capacity, while adjusting the length of the torsion arm can change the lever effect of the force arm, thereby affecting the actual output elastic force.
Environmental factors may also cause insufficient spring elasticity, especially when used in high temperature or corrosive environments. Although stainless steel has a certain corrosion resistance, long-term exposure to strong acid, strong alkali or high humidity environments may cause oxidation corrosion on the surface of the spring, resulting in a decrease in material strength and attenuation of elastic force. If rust or discoloration is found on the surface of the spring, it is necessary to clean it first, use a soft cloth and neutral detergent to remove the corrosive substances, and then check whether the elastic force has been restored. If the corrosion is severe, even after cleaning, the elastic force is still insufficient. The stainless steel spring with stronger corrosion resistance, such as 316 stainless steel spring, should be replaced in time to meet the needs of use in harsh environments.
Fatigue wear of stainless steel torsion springs after long-term use is also a common problem. During the repeated force process of the torsion spring, microcracks will gradually appear in the internal metal crystal structure. As the number of uses increases, the microcracks expand and the spring elasticity decreases. If the spring is used for a long time and the load is large, even if there is no obvious damage on the appearance, it may have insufficient elasticity due to fatigue accumulation. At this time, you can try to perform low-temperature tempering on the spring. By heating it to an appropriate temperature and then slowly cooling it, the internal stress can be eliminated and some elasticity can be restored. However, it should be noted that the temperature and time of the tempering treatment must be strictly controlled to avoid the spring annealing and softening due to excessive temperature, which will aggravate the decrease in elasticity.
Adjusting the pre-compression amount or pre-torsion angle of the spring is also an effective way to improve the lack of elasticity. For some torsion spring structures that allow fine-tuning, the preload can be adjusted by changing the initial installation position of the spring. For example, during installation, the torsion arm of the spring is rotated a certain angle in the loading direction so that the spring has a certain preload in the initial state, thereby increasing the elasticity output in actual work. However, the adjustment range must be carefully controlled. If the preload is too large, it may cause the spring to be overloaded and deformed, or even broken. Therefore, it is necessary to refer to the maximum allowable torsion angle and load range of the spring for operation.
If the above methods cannot effectively solve the problem of insufficient elasticity, it is necessary to consider whether the stainless steel torsion spring design has defects. For example, an unreasonable pitch design of the spring may cause interference between adjacent coils during torsion, limit the normal deformation of the spring, and affect the output of elastic force. At this time, it is necessary to communicate with the spring manufacturer, provide detailed operating conditions and force data, and have professionals redesign and optimize the spring to adjust the geometric parameters of the spring, such as wire diameter, outer diameter, pitch, torsion arm length, etc., to ensure that the spring can provide stable and sufficient elastic force within the working range.
In the process of adjusting the elastic force of the stainless steel torsion spring, safe operation is always the first principle. When the spring is under stress, it stores a large amount of energy inside. If it is not properly operated, it may bounce or break, causing personal injury. Therefore, before adjustment, it is necessary to ensure that the equipment is in a power-off or stopped state, use special tools to fix both ends of the spring, slowly release or increase the load, and avoid direct operation with bare hands. At the same time, do a good job of personal protection, wear protective glasses and gloves to prevent the spring from accidentally popping out or metal debris splashing and causing injury. By systematically troubleshooting the cause and taking scientific and reasonable adjustment measures, the problem of insufficient spring elasticity can be effectively solved in most cases and the normal operation of the equipment can be restored.
