corrosion resistance in excellent spring for wire rod and steel wire, method of manufacturing a spring steel wire, as well as of the spring production method

摘要

In weight%, C: 0.45~0.6%, Si: 1.0~3.0%, Mn: 17.0~25.0%, corrosion resistance of the balance of Fe and other unavoidable impurities Excellent spring wire and steel wire, the wire was drawn to a tensile strength of 1800~2100MPa, method for producing a spring steel wire excellent in corrosion resistance of cross-section reduction rate is producing steel wire is 25% or more, and the tensile strength by the wire to drawing is 1800~2100MPa, stage of cross-section reduction rate is producing steel wire is 25% or more, and excellent corrosion resistance comprising the step of cold-forming at room temperature the steel wire production method of bundling is provided. Also, according to the present invention, elimination of expensive alloying elements, omission of the QT heat treatment, and the omission of the work of removing the surface layer ferrite decarburization can be reduced cost, spring wire having excellent corrosion resistance, spring steel wire, and it is possible to provide a spring