Judgment quenching refers to the release of tensile stress field equivalent to 30% ~ 50% tensile strength on both sides of the hardened stainless steel wire, stainless steel wire under the action of tensile strength leads to trace element judgment, dislocation line movement. At this point, the interstitial material's molarity atoms (C and N) spread towards the dislocation line depending on temperature, "pinning" the moving dislocation. In addition, the diffuse melting pearlitic in the whole process of quenching provides a lot of pinning points, so that the dislocation "pinning" more complete, more abundant, improve the plastic deformation resistance of stainless steel wire, improve the elastic reduction characteristics of stainless steel wire.

The magnetic effect of current heating faster, stainless steel wire surface oxidation light, not easy to lead to nitriding, crystal is also promoted. Spring customized manufacturers of magnetic induction heating machinery production and manufacturing of oil heat treatment process - quenched stainless steel wire torsion spring, in static load, load of strong plasticity, elastic reduction characteristics is very good, in the spring yellow various indicators to maintain the original level of specifications, the net weight relief of 10% ~ 20%. Rubber cushion plant is very containing vanadium and niobium alloy steel, only the use of higher metallographic temperature to make vanadium and niobium sufficient dissolution, to obtain the expected effect of quenching secondary hardening. Under the general temperature standard, the metallographic organization temperature is too high, the passivation treatment of stainless steel wire crystal, surface oxidation and nitriding are also greatly increased, seriously threatening the service life of fatigue.