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How to Choose Materials for Pressure Springs, Shenzhen Hongjie Spring Factory
The selection of pressure spring materials must fully consider the purpose, importance, load properties, size, cyclic characteristics, working temperature, surrounding media, and other usage conditions of the spring.
Small and medium-sized compression springs, especially spiral tension compression springs, should limit the reinforced steel wire.
Cold drawn steel wires such as lead bath and oil quenched tempered have high strength and good surface quality, and their fatigue performance is higher than that of ordinary steel wires. This steel wire has simple processing, good process performance, and stable quality.
After cold drawing, the steel wire and piano steel wire generate significant residual stress.
After the compression spring is processed, there is a significant residual stress. The size changes significantly after tempering, making it difficult to control the dimensional accuracy.
The oil quenched tempered steel wire is pulled and stretched by the steel wire to the specified size, and then subjected to tempering and strengthening treatment. There is basically no residual stress, and the formed compression spring is tempered at low temperature, with minimal size change. Its heat resistance and stability are better than those of cold drawn steel wire.
For large and medium-sized pressure springs, due to their high bearing accuracy and stress, cold drawing materials or processes are used to polish the pressure springs.
For compression springs with low load accuracy and stress, hot-rolled steel can be selected.
The material part of the spiral compression spring should preferably have a circular cross-section. Square and rectangular cross-section materials have strong load-bearing capacity, good pit impact, and can reduce the compression spring. However, except for special needs, there are few sources of materials and the price is high. In addition, this material is not used as much as possible.
In recent years. The use of circular steel wire instead of trapezoidal steel wire for flattening has achieved good results.
Cold drawn steel wires such as lead bath and oil quenched tempered have high strength and good surface quality, and their fatigue performance is higher than that of ordinary steel wires. This steel wire has simple processing, good process performance, and stable quality.
After cold drawing, the steel wire and piano steel wire generate significant residual stress.
After the compression spring is processed, there is a significant residual stress. The size changes significantly after tempering, making it difficult to control the dimensional accuracy.
The oil quenched tempered steel wire is pulled and stretched by the steel wire to the specified size, and then subjected to tempering and strengthening treatment. There is basically no residual stress, and the formed compression spring is tempered at low temperature, with minimal size change. Its heat resistance and stability are better than those of cold drawn steel wire.
For large and medium-sized pressure springs, due to their high bearing accuracy and stress, cold drawing materials or processes are used to polish the pressure springs.
For compression springs with low load accuracy and stress, hot-rolled steel can be selected.
The material part of the spiral compression spring should preferably have a circular cross-section. Square and rectangular cross-section materials have strong load-bearing capacity, good pit impact, and can reduce the compression spring. However, except for special needs, there are few sources of materials and the price is high. In addition, this material is not used as much as possible.
In recent years. The use of circular steel wire instead of trapezoidal steel wire for flattening has achieved good results.
