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Introduction to wave springs

2024-05-05

What are wave springs?

Wave springs, also known as wavy spring, are thin annular elastic metal components consisting of several wave crests and wave troughs. This product is made of high-quality spring steel 65Mn (60Si2MnA/50CrVA /0Cr17Ni7Al) and stainless steel SUS304/SUS316/SUS631, which are heat-treated by specific methods and have a hardness generally controlled between HRC44-55. The surface is blackened and has good elasticity. Wave springs are widely used in the motor, machinery, hydraulic equipment, automotive and other industries. They are mainly installed in the bearing chamber or hole with appropriate specifications, with a small installation space, and have the special function of reducing noise and vibration.

Surface treatment

(1) Blackening treatment: This surface treatment provides a black surface. Blackening is more important for appearance than for corrosion resistance.

(2) Chrome plating: Chrome plating is mainly a treatment method for carbon steel products, mainly to increase corrosion resistance.

(3) Oil immersion: Oil immersion is a standard treatment method for carbon steel products, aiming to prevent rust during transportation and storage.

(4) Passivation: Passivation is a cleaning method for stainless steel materials.

(5) Phosphate coating: Phosphating has better corrosion resistance than blackening.

(6)  Ultrasonic cleaning: This is a standard surface treatment method for stainless steel materials.

(7) Vibration deburring: To eliminate sharp edges of the product.Classification of wave springs

Wave springs are divided into two types: L/LM series wave springs and LS/LMS series wave springs.

(1) L/LM series wave springs

The L/LM series are continuously wound wave spring with alternating peaks and troughs. The characteristics of this series of I wave springs are that they can provide ideal elasticity in a small installation space, saving up to 50% of space compared with conventional spiral springs.

(2) LS/LMS series wave springs

The LS/LMS series are wave springs with alternating peaks and troughs and flat rings at both ends. In addition to the advantages of the L/LM type wave springs, the LS/LMS type has more evenly distributed elasticity because of the flat rings at both ends of the wave peaks. This type of wave spring is particularly suitable for environments where there are holes at both ends of the installation space, as the wave peaks can easily fall into the holes and become inoperable.According to processing technology: punched wave springs and wound wave springs.

Characteristics of wave springs

(1) Large stiffness range, strong buffering and vibration absorption capacity, large deformation energy per unit volume of material.

(2) Variable stiffness characteristics. The stiffness can be adjusted by changing the combination of different heights, widths, and thicknesses of the wave peaks. The stiffness can also be adjusted by regulating the number of combined pieces.

(3) Compared with disc springs, wave springs have the advantages of high strength, good flexibility, and strong impact resistance.

(4) Compact structure size, under the same physical parameters, the required installation space is smaller.

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