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Spring contact manufacturers share how to improve the service life of non-magnetic springs.


Release time:

2022-04-12

1. Isothermal quenching of non-magnetic spring For springs with small outer diameter or sufficient quenchability, isothermal quenching can be used, which can not only reduce the change of the center, but also improve the strength and toughness, and then quench again. The spring contact manufacturer believes that the elastic limit tempering temperature is the same as that of isothermal quenching.

Spring contact manufacturers share how to improve the service life of non-magnetic springs.

1. Isothermal quenching of non-magnetic spring


For springs with small outer diameter or sufficient quenchability, isothermal quenching can be used, which can not only reduce the change of the center, but also improve the strength and toughness, and then quench again. The spring contact manufacturer believes that the elastic limit tempering temperature is the same as that of isothermal quenching.


2. Thermal mechanical treatment.


Thermally mechanical treatment is a combination of deformation strengthening and heat treatment strengthening to further improve the strength and toughness of steel. Thermomechanical treatment can be divided into high temperature, medium temperature and low temperature. High-temperature thermomechanical treatment is the ignition immediately after deformation in a stable austenitic state, which can be combined with forging or hot rolling. In other words, the light is turned off immediately after thermoforming, and the non-magnetic spring is quickly ignited at a 650 high temperature after high temperature deformation and heat treatment, and the strength and fatigue life are greatly increased.


3. Non-magnetic spring relaxation treatment


When the elastic sulfur works under external force for a long time, the stress relaxation will lead to a small amount of deformation. The spring contact manufacturer believes that especially the elastic sulfur working at high temperature, the stress relaxation phenomenon at high temperature is further intensified, and the spring accuracy is reduced, which is not allowed in ordinary springs. Therefore, this spring should be relaxed after adjustment. Heat treatment process: Pre-load the spring to deform more than the non-magnetic spring, and then heat it at a temperature above the working temperature of 20 for 8-24 hours.


4. Jet treatment is one of the commonly used methods to improve the surface quality of non-magnetic springs. Surface defects such as scratches, folds, oxidation, and decarburization are the locations of stress concentration and the source of fatigue cracking. Spraying the surface of the spring with high-speed steel tablets can improve the surface quality of the spring, increase the surface strength of the spring, and make the surface of the spring in a state of compressive stress, thereby improving the fatigue strength and service life of the spring.


5, low-temperature carbon-nitrogen co-osmosis.


The combination of tempering and low-temperature carbon-nitrogen infiltration (soft nitriding) can significantly improve the fatigue life and corrosion resistance of spiral non-magnetic springs


What are the types of special-shaped springs shared by spring contact manufacturers?


Transition coil spring: usually a circular cross-section material, most of which are used to bear the special case of compression load.


Engraved spring: The material of this spring is a spring strip (or sheet) processed by a corresponding mold on a special equipment or a general pressure processing machine. The material thickness of plate springs, wave springs, and light springs is thin, but the material thickness of medium or large disc springs is often thicker, and this spring is also widely used.


If the floor space is limited, springs of rectangular cross-section materials are usually used, because springs made of rectangular cross-section materials can withstand greater loads under the same deformation as the same space. Compared with the spring of circular cross-section material, this spring has a larger cross-sectional area in the same space, so the energy absorbed is also larger, and can be used for heavy-duty, stamping dies or springs with particularly large stiffness.


Spring contact manufacturers talk about special-shaped pressure springs


Disc-shaped special-shaped springs are small in size and light in weight. They are widely used in buffer, shockproof and other fields. They are widely used in stamping, valve clutch fasteners, petroleum and geological engineering machinery. The middle convex helical compression profile spring can get a larger deformation, because the small coils at both ends can be contained in the middle ring. Spring contact manufacturers believe that some convex car brake springs are always tightened, open the car valve, the spring resumes deformation, and drives the brake to brake the car. The hair-cutting pusher also uses the characteristic of the convex coil spring to obtain greater deformation and stress in the effective space.


The function of the worm coil spiral spring is similar to that of the conical coil forming spring, and the energy absorbed by the pressure is very large, and it is only used in special cases where space is limited due to manufacturing difficulties. The planar worm coil spring has a large number of coils and large deformation, which can store more energy. It is often used to compress the energy storage element of the spring and the instrument.


The leaf spring is composed of a single disc spring steel plate or multiple pieces superimposed. It has strong cushioning and damping performance, especially the damping performance of multi-disc springs. It is mainly used for the suspension of automobiles, tractors and railway vehicles.


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