What is the distinguishing feature of carbon spring steel and stainless steel wire factory?

Spring manufacturer introduces carbon spring steel and stainless steel wire factory leads to high residual stress after cold drawn, production after the spring, there are a lot of residual stress, heat treatment after specifications change is quite big, can't control accuracy specifications. Oil quenching heat treatment of stainless steel wire is in stainless steel wire stainless steel wire is transferred to the prescribed specifications after demodulation improve processing, there is no residual stress * most, forming the cryogenic heat treatment after spring, not much change specifications, good heat-resistant credibility in cold drawn stainless steel wire. According to the regulations of the GB1239, general compression spring working temperature above 60 ℃, adjusted by the shear strain rate, its expression is: Gt = KtG type of G - — Room temperature compressive strength; Gt— — Working temperature t of shear strain rate; Kt— — Temperature control index value according to table 2 - 98 selected. Under cryogenic use spring raw materials, should have high quality ultra-low temperature plasticity. Factory of carbon spring steel, stainless steel wire and 1 cr18ni9 low alloy spring steel, copper alloy, nickel base alloy have very good cryogenic plasticity and tensile strength. Under ultra-low temperature, the ductility of raw materials is sensitive to surface defects is very special, therefore, performance of raw material is used, should be strictly required. Under cryogenic, geographical environment medium corrosion level than for raw materials under the vegetable greenhouses, while cadmium plating and hot dip galvanized associated cold short. Under ultra-low temperature, compressive strength and the expansion coefficient of raw material is not much, in the scheme design can not fully considered.
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