Tension springs are wound helical coils that are wrapped tightly together to create tension. Also called extension springs, tension springs provide extended force when the spring is pulled apart from its original length.
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We have a patent certificate for springs, and have the ability to develop products together with customers. Some products can provide free samples to customers.
We have 30 years of manufacturing and R&D experience. It has passed the IATF 16969 automotive quality management system, and has more than 200 sets of professional spring equipment, which can guarantee the quality.
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Wenzhou Heli Spring Manufacturing Co., Ltd. was founded in 1992. It is a high-quality spring manufacturing enterprise integrating design, production, sales and service. The current products include: compression springs, torsion springs, extension springs, auto parts springs, wire forming springs and spring sheets, etc.
The paint used for the paint layer of the tension spring usually has the following types:
1. Asphalt paint
2. Phenolic paint
3. Alkyd paint
4. Epoxy paint
There are many types of pull springs, common ones are compression springs, tension springs, torsion springs, etc. Compression spring is a kind of tension spring that shortens the length when subjected to compression force, and is commonly used in various mechanical equipment, electrical appliances, automobiles and other fields. Tensile spring is a kind of tension spring that extends the length when subjected to tensile force, and is commonly used in doors, windows, toys and other fields. Torsional pull spring is a kind of tension spring that deforms when subjected to torsional force, and is often used in clocks, watches, instruments and other fields.
Extension springs, also known as helical extension springs, are of equal pitch and mostly circular in cross-section. They can be used in many occasions, such as production and assembly, testing, research and development, and maintenance. Tension springs occupy an important position in the global market and are widely used in national defense, marine, computer, electronics, cars, molds, medicine, biochemistry, aerospace, railways, nuclear power, wind power, thermal power, construction machinery, mining machinery, construction machinery, elevators, etc.
The manufacturing process of tension springs usually includes the following steps: First, the appropriate material is selected and processed as needed, such as drawing, cutting, polishing, etc. Secondly, according to the design requirements and size requirements, bending and winding is carried out using a spring pulling machine or by hand, so as to form the desired shape and elasticity. Finally, the pull spring is heat treated or surface treated to improve its strength and corrosion resistance, and testing and quality control are carried out.
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The main function of tension springs is to allow for an outside force to create tension, and then use this energy to pull the components back together by reverting to its original shape. Tension springs are typically wound very tightly and are coiled closely together when at rest.
Extension springs with a high amount of tension, therefore taking a strong load to extend it. Also known as heavy duty tension springs.
The main difference is that tension springs are meant to hold two things together while compression springs are designed to keep components from coming together. While they work in opposition with each other, they are both necessary for different products.
There are many types of materials for tension springs, which can usually be selected according to factors such as the environment of use, the required elasticity and corrosion resistance. Here are some common spring materials: Steel: Steel is one of the most commonly used spring materials, has high strength and hardness, and performs well in high temperature and high pressure environments. Stainless steel: Stainless steel has excellent corrosion resistance and is often used in applications where oxidation and corrosion resistance is required. Cobalt alloys: Cobalt alloys have very high elasticity and wear resistance, and are commonly used in applications in high temperature, high pressure and strong corrosion environments. Copper: Copper spring has good electrical and thermal conductivity, and is commonly used in electronic devices, communication equipment and other occasions. Titanium alloy: Titanium alloy has light weight, high strength and excellent corrosion resistance, and is commonly used in aviation, aerospace and other fields.
The elastic coefficient of a spring is the ratio of stress to strain due to tension or compression per unit length, usually expressed in terms of elastic modulus E. The modulus of elasticity is an intrinsic physical quantity of a material and is related to the geometry of the spring and the material. The greater the elastic coefficient of the spring, the better its elasticity, and the smaller the amount of deformation per unit length.