Method and device for downwards leading and continuously casting copper wire covering steel core

Abstract

The invention relates to a method and a device for downwards leading and continuously casting a copper-wrapped steel core wire. The method for downwards leading and continuously casting a copper wire covering steel core wire comprises the following steps: a continuous casting furnace (8) with an inner cavity is used, the bottom of the continuous casting furnace (8) is provided with a graphite crystallizing mold (19) communicated with the inner cavity of the continuous casting furnace (8), the graphite crystallizing mold (19) comprises a cooling device and a basically vertical mold cavity (20), a steel core wire (2) inside the continuous casting furnace (8) penetrates through the basically vertical mold cavity (20) from top to bottom, copper liquid inside the continuous casting furnace (8) flows into a gap between the steel core wire (2) and the graphite crystallizing mold (19) and is congealed to wrap the steel core wire (2), and then a copper-wrapped steel core wire (10) is pulled out of the graphite crystallizing mold (19) in an interval way. Compared with the prior art, the method for downwards leading and continuously casting a copper-wrapped steel core wire can increase the thickness of copper wrapped on steel core wires, thereby enhancing the concentricity of the steel core wires and wrapping copper layers.

Description

technical field [0001] The invention relates to the technical field of metal continuous casting, in particular to a method and device for downdrawing continuous casting of copper-clad steel wires. Background technique [0002] At present, there are mainly the following three methods of copper cladding on the surface of steel core in China: 1. Electroplating method: put the cleaned steel wire (steel rod) into the electroplating tank, and use the electroplating principle to electroplate a layer of copper on the surface of the steel. It is called cold plating process. Its main disadvantages are: the copper layer is thin, and the copper-steel joint surface is easy to leave electrolyte; The process pollutes the environment. 2. Coating method: insert the cleaned steel core into the copper tube, or wrap the steel core with a copper strip, weld it by argon arc welding, and then use the tightening force of the straight drawing die to tighten the copper tube on the steel tube. the ...

AI Technical Summary

Problems solved by technology

Its main disadvantages are: the copper layer is thin, and the copper-steel joint surface is easy to leave electrolyte; The process pollutes the environment

This process is also called cold drawing coating method, that is, the copper layer is coated on the steel core by mechanical force. The main disadvantage is: poor bonding force of copper and steel

This process can solve the problems of thin electroplated copper layer and poor bonding force of cladding method, but its main disadvantage is that it is difficult to control the uniformity (concentricity) of the copper layer, and the copper-iron alloy formed when the steel core passes through the copper liquid cannot be guaranteed. It does not diffuse into the copper furnace

In addition, there are also reports on the method of manufacturing copper-clad steel by continuous casting and rolling. Although this method can improve the uniformity of the copper layer to a certain extent, it is still relatively difficult to control. The copper-iron alloy formed when the steel core passes through the copper liquid flows into the copper furnace. The internal diffusion problem is not guaranteed to be solved

Images