Spring material to consider what?

Spring manufacturer in material selection, should according to the features of spring bear the load, stress condition and stress size, operating temperature, the natural environment, material, use, the electrical conductivity of the magnetic absorption rules, using performance, material comes from elements such as clear and price. Carbon spring steel wire and the wire caused large residual stress after cold drawn, production and processing after the spring, there is a large residual stress and tempering after the specification change is very big, can't control precision. Oil tempered steel wire heat treatment is in the steel wire in wire drawing after the requirement specifications to carry out the deployment of strengthening solution, most of there is no residual stress, forming the cryogenic tempering after spring, the specification change is not big, high temperature resistant good reliability in cold drawn steel wire. Spiral spring material cross section, should give preference to the circular cross section. Square and rectangular cross section material box, tolerance is stronger, good impact resistance properties, but also let spring practical, but less material comes from. And the price is higher, in addition to the unique must, generally do not use this kind of material as soon as possible. In recent years, research and development with round wire flattening instead ladder shaped wire, obtained the very good practical effect.
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