Español
Pусский
1. Background
wave spring seal is a widely used cartridge seal assembly in pump equipment, characterized by simple structure, low cost, and suitability for various working conditions. As a key component of cartridge seal assembly, the waveform spring can provide uniform pressure distribution to maintain a tight fit of the sealing surface.
wave spring seal is a widely used cartridge seal assembly in pump equipment, characterized by simple structure, low cost, and suitability for various working conditions. As a key component of cartridge seal assembly, the waveform spring can provide uniform pressure distribution to maintain a tight fit of the sealing surface.
2.When selecting a single end wave spring seal, the following factors should be considered comprehensively:
1). Choose according to the usage space:
The distance between the bearing surfaces of the wave spring determines the axial movement space or working height, so it is necessary to first clarify the usage space, including the working position of the wave spring in the hole or on the shaft, to determine whether it meets the usage requirements.
If the application scenario requires strict space requirements (such as aerospace, precision machinery, etc.), wave springs can be prioritized because they can significantly reduce thecartridge seal assembly space height (up to 50%) under the same elastic force.
The distance between the bearing surfaces of the wave spring determines the axial movement space or working height, so it is necessary to first clarify the usage space, including the working position of the wave spring in the hole or on the shaft, to determine whether it meets the usage requirements.
If the application scenario requires strict space requirements (such as aerospace, precision machinery, etc.), wave springs can be prioritized because they can significantly reduce thecartridge seal assembly space height (up to 50%) under the same elastic force.
2).Select based on load demand:
The load of a wave spring is generated by the working height and axial force of the spring itself. Therefore, when selecting a wave spring, it is necessary to calculate the load demand based on the axial force that the spring needs to withstand at the working height in the specific application scenario.
Different types of wave springs are suitable for different load conditions:
Single layer wave spring: suitable for working conditions with short displacement and low to medium elasticity.
Multi layer peak type (series type): Suitable for scenarios with large displacement and low to medium elasticity requirements, it can be used as a substitute for cylindrical springs.
Multi layer stacked peak type (nested, parallel): suitable for situations that require huge elastic force while maintaining wave spring characteristics, and can be used instead of disc springs in many cases.
3).Choose according to the actual usage environment:
High temperature environment: Wave springs made of ordinary materials will gradually decrease in elasticity and experience a significant increase in failure under high temperature conditions. If the working environment temperature is high, waveform springs made of special stainless steel can be selected. Special stainless steel also has high resistance to relaxation and fatigue when the temperature reaches 650 ° C.
Dynamic application (in terms of fatigue): The lifespan of waveform springs is related to their compression capacity and material stress ratio. The fatigue resistance of different materials also varies, and the fine grain structure of the same material has higher yield strength and fatigue strength than the coarse grain structure. The fatigue life of surface strengthened samples is much higher than that of untreated samples; The smaller the surface roughness of the material, the smaller the stress concentration, and the higher the fatigue strength.
Corrosive material environment: If there are corrosive substances in the working environment, stainless steel waveform springs can be considered. Stainless steel has high fatigue life, good resistance to relaxation, and extremely high corrosion resistance.
