A method of manufacturing steel wire for spring with excellent stability and stress resistance

Abstract

The invention discloses a method for manufacturing steel wires for springs with excellent stability and stress resistance, comprising the following steps: raw material selection: selecting high-carbon steel hot-rolled high-quality wire rods for production; Scale treatment, and use a pre-drawing machine to draw it to the diameter of the pre-drawn semi-finished steel wire required by the process design through a tungsten steel wire drawing die, and then perform preliminary drawing treatment; continuous heat treatment of the semi-finished steel wire: heat the pre-drawn semi-finished steel wire The furnace is subjected to lead bath quenching treatment, and the tensile strength of the semi-finished steel wire after heat treatment is 880-1100MPa. The invention can make the steel wire have high stability and stress resistance, and it is convenient to control the pulling force and tension of drawing to produce carbon fine spring steel wires of different sizes and standards. Mechanical properties and toughness requirements, but also meet mass production and ensure product quality requirements.

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.