With the growing demand for springs, the scale of the example is also higher and higher, so the opposite spring manufacturers software in every possible way to improve the production process to improve the quality of springs! The precautions for improving the elasticity reduction characteristics throughout the production process include: stress quenching and electromagnetic induction heating treatment.

(1) Stress quenching treatment stress quenching treatment refers to the release on both sides of the quenched stainless steel wire equivalent to 30% ~ 50% tensile strength tensile stress field, stainless steel wire under the effect of tensile strength leads to trace element strain force, dislocation line move. At this point, the molality atoms (C and N) of the interstitials scatter to the left of the dislocation line according to the temperature, "pinning" the shifting dislocation. In addition, during the quenching process, the cementite filled with melting provided many pinning points, so that the dislocation "pinning" to double complete, double abundant, improve the stainless steel wire plastic deformation immune talent, improve the stainless steel wire elastic reduction characteristics.

(2) Electromagnetic induction heating treatment electromagnetic induction heating faster, the surface of stainless steel wire oxidation light, not easy to lead to nitriding, crystal also get improved. Electric magnetic induction heating machinery and equipment production production production production of oil conditioning treatment - quenching stainless steel wire compression spring, under static load, strong plasticity under load, elasticity reduction characteristics are very good, in the spring various indicators to maintain the original degree of the example, the net component relief of 10% ~ 20%. Rubber shock absorber factory is very containing vanadium and niobium alloy steel, only by using higher ferritization temperature to make vanadium and niobium abundant melting, can we get the second hardening expected effect. In the ordinary heating example, ferritization temperature is too high, stainless steel wire crystal coarsening, surface oxidation, nitriding also greatly intensified, serious threat tired software period. When the electromagnetic induction heating to 900 ~ 1200℃, stainless steel wire is not easy to appear nitriding, serious oxidation environment and crystal coarsening environment. Thus it is said that electromagnetic induction heating can make alloy steels containing vanadium and niobium fully exercise their advantages.