Preparation method of copper-clad aluminum composite bar
A technology of composite rods and copper-clad aluminum, which is applied in the manufacture of cables/conductors, root rods/rods/wires/strip conductors, electrical components, etc., and can solve the problem of high copper prices
Active Publication Date: 2018-08-10
YANGZHOU FEILING ALLOY TECH CO LTD
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Problems solved by technology
[0002] Copper and copper alloys are the preferred materials for cables due to their excellent comprehensive mechanical properties and high electrical conductivity, but the price of copper is higher
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[0020] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0022] Such as figure ...
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The invention discloses a preparation method of a copper-clad aluminum composite bar, and relates to the technical field of a preparation method of a metal material. The preparation method comprises the steps of firstly realizing the molding of a copper pipe and the formation of a directional solidification structure through vertical centrifugal movement and electromagnetic confinement, establishing a temperature gradient for the copper pipe from the bottom to the top, then stopping the centrifugal movement, lifting a core-type electromagnetic confinement device, arranging thermocouples again,slowly casting molten aluminum, controlling the casting speed and temperature distribution, and keeping directional solidification of the casting molten aluminum. The copper-clad aluminum composite bar can be formed after the molten aluminum is completely casted and solidified. The proportion of copper and aluminum in the copper-cad aluminum composite bar can be realized through the centrifugal speed and an internal electromagnetic confinement force. According to the method, the copper-clad aluminum composite bar is prepared by using the combination of centrifugal casting of copper and directional solidification of aluminum, and a directional solidification technology of a copper-level aluminum core is adopted, so that the preparation method has the advantages good bonding in interface ofaluminum and copper and high strength of aluminum and copper.
Description
technical field [0001] The invention relates to the technical field of metal material processing methods, in particular to a method for preparing copper-clad aluminum composite rods. Background technique [0002] Copper and copper alloys are the preferred materials for cables due to their excellent comprehensive mechanical properties and high electrical conductivity, but the price of copper is relatively high. In the process of communication signal and power transmission, the current frequency is very high, due to the "skin effect", the transmitted current is mainly transmitted through the surface of the cable. Therefore, in order to save materials, scientists have designed copper-clad aluminum composite wires, using cheaper aluminum in the core of the cable, and using copper on the surface. The density of copper clad aluminum wire is about 40% of that of pure copper wire. At present, the application of copper-clad aluminum composite layered materials in the fields of comm...
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Login to View More IPC IPC(8): H01B13/00H01B5/02
CPCH01B5/02H01B13/00
Inventor 王书杰
Owner YANGZHOU FEILING ALLOY TECH CO LTD