Method for cladding bimetal

Abstract

The invention relates to a method for cladding a bimetal, which comprises the following steps of: a, heating a cleaned copper strip at the temperature of between 500 and 900 DEG C; b, cleaning the external surface of a steel core through a cleaning device, and preheating the cleaned steel core in protective atmosphere by an induction heating mode at the temperature of between 700 and 1,100 DEG C; c, putting the preheated steel core and the copper strip together into a gas protection chamber which is filled with the protective atmosphere for inhibiting surface oxidation of a steel wire and the copper strip, and then extruding the steel wire and the copper strip to generate solid-phase binding through a binding roller and allowing the copper strip to surround the steel core to finish cladding molding; and d, finally, winding up a copper clad steel wire after cladding through a winding roller. The method for cladding the bimetal can control the uniformity of a clad layer, and can make the bimetal bound after being clad at the same time and overcome the defects of other cladding methods.

Description

technical field [0001] The invention relates to a production method of a bimetal composite wire. Background technique [0002] As we all know, bimetal clad products can obtain the excellent properties of core material and surface material at the same time to a certain extent, which has obvious economic advantages compared with the more expensive materials commonly used. For copper-clad steel products, the cladding processes currently used include molten copper immersion casting and cladding welding. Among them, the molten copper immersion casting method is to cool the molten copper water through the crystallizer and solidify on the surface of the steel wire. The advantage of this method is that it can produce copper-clad steel wire with a thicker copper layer, but its disadvantage is that the control process is complicated. , The outer copper layer is uneven. However, the copper-clad steel produced by the cladding welding method is difficult to produce large-scale copper-c...

AI Technical Summary

Problems solved by technology

Among them, the molten copper immersion casting method is to cool the molten copper water through the crystallizer and solidify it on the surface of the steel wire. The advantage of this method is that it can produce copper-clad steel wire with a thicker copper layer, but its disadvantage is that the control process is complicated. , the outer copper layer is uneven

However, the copper-clad steel produced by the cladding welding method is difficult to produce large-scale copper-clad steel products due to the late bonding of the bimetallic contact surface in the subsequent drawing process.