Spring manufacturers teach you how to choose the material of spring?

Spring material selection? Suzhou Zhaoneng Precision Spring Hardware Co., Ltd. as a spring manufacturer to tell you, should be based on the nature of the spring to bear the load, stress state, stress size, working temperature, environmental media, service life, requirements for electrical and magnetic conductivity, process performance, material sources and prices and other factors to confirm.

When confirming the shape and scale of the material section, priority should be given to the series of scales regulated by national standards and ministerial standards, and the selection of non-standard series of materials should be prevented as far as possible. Medium and small springs, especially spiral tensile springs, should be prioritized by strengthening steel wire, lead bath and other warm drawn steel wire and oil quenched tempering steel wire, with high strength and outstanding surface quality, fatigue performance is higher than the general quenched tempering steel wire, simple processing, good process, stable quality.

The carbon spring steel wire and piano steel wire produce a large residual stress after cold drawing, there is a large residual stress after processing the spring, the scale changes greatly after tempering, it is difficult to control the scale precision. The oil quenching tempered steel wire is modulated and strengthened after the steel wire is drawn to the regular scale, and basically no remaining stress exists. After the forming spring is tempered at low temperature, the scale changes very little, and the heat stability is better than that of the cold-drawn strengthened steel wire.

For large and medium-sized springs, cold-drawn materials or cold-drawn polished steel should be selected for high load accuracy and stress. For springs with low load accuracy and stress, hot-rolled steel can be used.

The material cross-section of the helical spring should be preferentially selected as a circular cross-section. Square and rectangular cross section materials, strong ability to withstand, good impact resistance, and can make the spring miniaturized, but less material sources. And the price is high, in addition to special needs, generally try not to choose this material. In recent years, research and development of round steel wire rolling instead of trapezoidal steel wire, and achieved good results.

Spring materials that work at high temperatures require good thermal stability, resistance to relaxation or creep, resistance to oxidation, and resistance to certain medium corrosion.