Production process of clad steel wire rod with steel core wire of dual phase structure

Abstract

The invention relates to a production process of a clad steel wire rod with a steel core wire of a dual phase structure, which comprises the following steps: carrying out pretreatment on a copper belt and a steel core wire rod; cladding and wielding; drawing, wherein the steel core wire rod is made of low carbon steel the carbon content of which is less than or equal to 0.2%, or made of low carbon steel the contents of manganese and vanadium of which are respectively less than or equal to 0.2%, and less than or equal to 0.12%; carrying out double phase heat treatment on drawn wire rod, wherein the double phase heat treatment is carried out on the drawn wire rod, and enables the temperature of the drawn wire rod to be 740-950DEG C; and then rapidly cooling so as to enable the steel core wire rod to obtain the double phase structure of ferrite and martensite. The clad steel wire rod has high strengthen, tensile strength which can be 600-1000MPa, and good elongation percentage which can be over 15%, and when in pretreatment, the process has low production cost and high efficiency, is easy to operate and can produce the clad steel wire rod the diameter of which can be 6mm, and expand the using range of the wire rod.

Description

technical field [0001] The invention relates to a copper-clad steel wire production process, in particular to a copper-clad steel wire production process in which the steel core wire is a dual-phase structure. Background technique [0002] Copper-clad steel wire is widely used. Its structure is a steel core wire inside, and copper material on the outside of the steel core wire, and the steel and copper materials form a metallurgical bond with each other. At present, the process of producing copper-clad steel wire rods is to pre-treat the copper strip and the steel core wire, then continuously coat the copper strip on the outside of the steel core wire, weld the joint formed by the copper strip, and finally weld the cladding The final wire is drawn to achieve metallurgical bonding between the copper material and the steel material. [0003] At present, the copper-clad steel wires produced by the cladding welding method all use low-carbon steel wires with a carbon content of ...

AI Technical Summary

Problems solved by technology

However, medium-carbon steel, high-carbon steel or alloy structural steel wire rods are not only more expensive, but also have high hardness, which causes great difficulties for pre-treatment, cladding welding and drawing, thus affecting the cost and productivity of copper-clad steel wire rods.