Spring is a component that everyone is familiar with. What are some common problems in the use of springs? Corrosion Resistant Disc Springs Manufacturer will organize it for you.
Analyze the reason why the spring will break during use:
Corrosion Resistant Disc Springs
1. When the mandrel is too small / the assembly surface is not flat / the parallelism of the positioning surfaces at both ends is poor, the spring will be compressed and twisted, and high pressure will be locally generated and broken.
2. The mandrel is too small or the spring is placed horizontally, and the spring and mandrel are worn and broken.
3. The mandrel is too short and the end is chamfered, which will cause friction and wear between the spring and the mandrel and break.
4. The use of foreign matter between the spring ring and the ring reduces the actual effective number of turns, resulting in high stress and breaks.
5. The spring is used in series to make it bend and exceed the length of the mandrel or counterbore, or because of the spring itself. The small difference causes the weaker load to bear a greater amount of compression and break.
6. Use more than a large amount of compression to produce high-effect force to break the spring.
Several factors affecting spring fatigue strength
1. There is a certain relationship between the yield strength of the material and the fatigue limit. Generally speaking, the higher the yield strength of the material, the higher the fatigue strength. Therefore, in order to increase the fatigue strength of the spring, we should try to increase the yield strength of the spring material. Or use materials with a high ratio of yield strength to tensile strength. For the same material, the fine grain structure has a higher yield strength than the coarse and fine grain structure.
2. Larger stress on the surface state mostly occurs on the surface of the spring material, so the surface quality of the spring has a great influence on the fatigue strength. Defects such as cracks, flaws and scars caused by spring materials during rolling, drawing and coiling are often the causes of spring fatigue and fracture.
3. The larger the size of the size effect material, the higher the possibility of defects caused by various cold and hot working processes, and the greater the possibility of surface defects. These reasons will all lead to a decrease in fatigue performance. Therefore, the influence of the size effect should be considered when calculating the fatigue strength of the spring.
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