High pressure tension spring

How is the free length and working stroke of high pressure tension spring designed?

Ningbo Chaoying Spring Industry & Trade Co., Ltd. has been focusing on the research and development and manufacturing of high-end rebound springs for many years. With excellent material science and precision manufacturing technology, we are committed to providing customized, high-performance rebound spring solutions for global customers. We are well aware that the needs of each customer are different. Our product design is always customer-oriented. We continuously improve product quality through unlimited innovation to ensure that the product can perform well in various complex environments. High pressure tension spring is one of our products, and we share the design principles and methods of its free length and working stroke.

High pressure tension spring is a spring specially designed to withstand high tension. It is widely used in equipment that requires high-strength tension and high-precision operation. Because its working environment is mostly in a high-pressure and high-stress state, the spring must maintain good elastic deformation ability while ensuring strength and stability. When designing high-pressure tension springs, free length and working stroke are two crucial parameters, which directly determine the performance and service life of the spring.

1. Free length refers to the natural length of the spring when no external force is applied. When designing a high-pressure tension spring, the design of the free length is related to the installation adaptability of the spring in the equipment, and also affects the pre-tension and stretching range of the spring.
Matching installation space with free length: Ningbo Chaoying Spring Industry & Trade Co., Ltd. first considers the installation space of the spring in the equipment when designing the free length. The free length of the spring must be suitable for the installation size in the equipment to ensure that the spring can be stably placed inside the equipment without tension. If the free length is too long, it may cause difficulties in spring installation or interfere with the normal operation of the equipment; if the free length is too short, it will affect the pre-tension of the spring and cannot achieve the best working state.
Pre-tension design: High-pressure tension springs usually require a certain pre-tension to ensure that it has sufficient restoring force during the stretching process. Therefore, the design of the free length must also take into account the need for pre-tension. Ningbo Chaoying Spring Industry & Trade Co., Ltd. accurately calculates the equipment's requirements for pre-tension and reasonably adjusts the free length so that the spring has a suitable tension when static, ensuring that the equipment can run smoothly when turned on.
Influence of material selection: The material of the spring will also affect the design of the free length. For high-pressure tension springs, the elastic modulus, strength and durability of the material are all key factors. When we choose high-performance alloy materials, we will consider their elastic limit and tensile capacity to determine the appropriate free length. High-strength materials can allow shorter free lengths while maintaining the excellent performance of the spring.

2. The working stroke refers to the displacement distance between the spring from the free state to the maximum tension state. When designing the working stroke, we need to ensure that the spring can withstand the maximum tension applied by the equipment during tension, while ensuring that it does not exceed the elastic limit to avoid permanent deformation or breakage.
Relationship between working stroke and spring stress: Under high pressure, the spring needs to withstand huge tension, so the design of the working stroke must fully consider the stress distribution of the spring. Ningbo Chaoying Spring Industry & Trade Co., Ltd. calculates the stress changes of the spring under different tension states to ensure that the spring can maintain a stable stress distribution throughout the entire stroke range to avoid damage caused by excessive local stress. At the same time, by optimizing the number of coils and wire diameter of the spring, we can adjust the length of the working stroke so that it can both meet the use requirements of the equipment and extend the service life of the spring.
Application of safety factor: Ningbo Chaoying Spring Industry & Trade Co., Ltd. always considers the importance of safety factor when designing high-pressure tension springs. The maximum displacement of the working stroke is usually designed to be around 80% of the elastic limit of the material to ensure that the spring can maintain its elastic properties even under extreme working conditions without plastic deformation or fracture. This design not only improves the reliability of the spring, but also provides a guarantee for the safe operation of the equipment.
Effect of ambient temperature on working stroke: The working stroke of high-pressure tension springs is also affected by ambient temperature. In high or low temperature environments, the elastic modulus of the spring material will change, which in turn affects the design of the working stroke of the spring. In this case, we will adjust the material selection and stroke design according to the temperature range of the use environment. For example, in a high temperature environment, the working stroke of the spring needs to be slightly shortened to avoid excessive stretching caused by the decrease in elasticity caused by high temperature; in a low temperature environment, the working stroke needs to be increased to compensate for the increase in the elastic modulus of the material.

3. Free length and working stroke are two key parameters in the design of high-pressure tension springs. They affect each other and must be balanced in the design. A properly designed spring should provide a suitable working stroke with sufficient free length, so that it can remain stable when no tension is applied and meet the working requirements of the equipment under tension. Ningbo Chaoying Spring Industry & Trade Co., Ltd. ensures the perfect combination of free length and working stroke through precise calculation and simulation analysis, so that the spring can show excellent performance in various complex working environments.