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How to choose compression springs
Choosing the right compression springs
The production materials for compression springs include carbon spring wire, piano wire, stainless steel spring wire and carbon spring wire. The selection and strengthening of alloy steel wire with low or high plasticity is achieved through high-temperature treatment. These springs possess an excellent anti-interference ability, making them suitable for use in various applications, including automobile suspension systems, automobile seat cushions, mechanical equipment manufacturing, stationery, pneumatic tools, and electrical appliances.
2, ClassificationCompression springs are divided into cylindrical compression springs, conical compression springs, concave and convex compression springs, and rectangular compression springs. Cylindrical compression springs offer versatility in application, with other compression springs of diverse shapes finding use in various industries. In everyday life, for example, rechargeable batteries connected to the negative pole of the control circuit are often secured using yellow, tapered housings. The yellow concave surface can bear large loads and has a damping effect. These springs are particularly well-suited for applications in pillows and mattresses. The small shells with yellow protrusions on both sides bear more yellow loads and have larger deformation. The rectangular frame utilises a rectangular transmission line, offering enhanced bearing capacity and durability. Its design is longer than a ring. It is primarily employed in metal moulds, metal abrasive, hardware machinery equipment, the automobile industry and other sectors.
Improving the service life of compression springs:
1. Deformation heat treatmentDeformation heat treatment involves combining deformation and heat treatment to enhance the strength and toughness of steel. Deformation heat treatment can be categorised as either high temperature or medium to low temperature. High-temperature mechanical heat treatment involves the austenite being in a stable state after quenching, forging or hot rolling, that is, in forming hot quenching.
2. Isothermal quenching
When the diameter of the compression spring is small or the stiffness is sufficient, isothermal quenching can be used to reduce the centre change and improve the strength and stiffness. Following isothermal quenching, retempering is recommended to enhance the material’s elastic limit. The tempering temperature should be equivalent to the isothermal quenching temperature.
3. Heat treatment processThe compression spring is preloaded so that its deformation exceeds that which may occur when the compression spring is working. It is then heated and maintained at an operating temperature above 20 °C for 8-24 hours.
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