Method for manufacturing spring steel wire with excellent stability and stress resistance

Abstract

The invention discloses a method for manufacturing a spring steel wire with excellent stability and stress resistance. The method comprises the following steps of selecting raw materials, namely selecting a high-carbon steel hot-rolled high-quality wire rod for production; descaling the high-carbon steel hot-rolled wire rod through a stripping wheel, drawing the high-carbon steel hot-rolled wire rod to the diameter of a pre-drawn semi-finished steel wire required by process design through a tungsten steel wire drawing die by adopting a pre-drawing machine, and then conducting primary drawing treatment; and conducting continuous heat treatment on the semi-finished steel wire, namely conducting lead bath quenching treatment on the pre-drawn semi-finished steel wire through a heat treatment furnace, wherein the tensile strength of the semi-finished steel wire obtained after heat treatment is 880-1100 MPa. According to the method, the steel wire is high in stability and stress resistance,drawing tension and tension can be conveniently controlled to produce carbon thin spring steel wires of different sizes and standards, the tensile strength of the steel wire can be continuously improved, the requirements for the appearance, the surface quality, the mechanical property and the toughness of a steel wire product are met, meanwhile, batch production is achieved, and the product quality requirement is met.

Description

technical field [0001] The invention relates to the technical field of steel wire manufacturing, in particular to a method for manufacturing steel wire for springs with excellent stability and stress resistance. Background technique [0002] Wire drawing is a metal pressure processing method that utilizes the plasticity of the metal, deforms the metal with the help of a wire drawing die and under the action of an external force, so as to obtain the required shape, size and performance. Galvanized carbon steel wire drawing can be divided into dry drawing and wet drawing according to the lubrication state of the wire; dry drawing generally uses lubricating powder as the lubricating carrier, the advantage is that the lubricating effect is good, and the galvanized carbon after drawing The product quality of plain steel wire is high; the disadvantage is that it occupies a large area and the production cost is high; wet drawing generally uses lubricating fluid as the lubricating c...

AI Technical Summary

Problems solved by technology

Galvanized carbon steel wire drawing can be divided into dry drawing and wet drawing according to the lubrication state of the wire; dry drawing generally uses lubricating powder as the lubricating carrier, the advantage is that the lubricating effect is good, and the galvanized carbon after drawing The product quality of plain steel wire is high; the disadvantage is that it occupies a large area and the production cost is high; wet drawing generally uses lubricating fluid as the lubricating carrier, and its advantages are that it occupies a small area and low production cost. High, the high drawing loss rate of galvanized layer is more than 30%, so that the surface of galvanized carbon steel wire is easy to scratch

The existing steel wire drawing operation makes the stability of the steel wire not high in stress resistance, and it is not convenient to control the pulling force and tension of the drawing to produce carbon thin spring steel wires of different sizes and standards.