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Preparation process of copper-clad aluminum flat wire drawn and rolled by die

A copper-clad aluminum flat wire and a preparation process technology, which is applied in the manufacture of wire harnesses, etc., can solve the problems of easy cracking and cracking of wire rods, and achieve the effects of preventing copper strips from being scratched, preventing crushing, and improving stability

Pending Publication Date: 2022-04-12
苏州南达金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As people's requirements for copper-clad aluminum wire products are getting higher and higher, people put forward higher requirements for the weight of copper-clad aluminum wire. In order to reduce the weight of copper-clad aluminum wire, it is necessary to reduce the diameter of copper and aluminum in proportion. In the existing production process, due to the high pressure on the copper-clad aluminum wire during the rolling process, it is easy to cause cracking. Therefore, in the conventional copper-clad aluminum wire production process, there is a problem that the wire is easy to crack

Method used

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  • Preparation process of copper-clad aluminum flat wire drawn and rolled by die
  • Preparation process of copper-clad aluminum flat wire drawn and rolled by die
  • Preparation process of copper-clad aluminum flat wire drawn and rolled by die

Examples

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Effect test

Embodiment 1

[0053] refer to figure 1 , figure 2 and image 3 , a preparation process of copper-clad aluminum flat wire drawn and rolled by a die, comprising the following steps:

[0054] S1. Prepare materials: preset aluminum core and copper strip for standby, the overall cross-section of the aluminum core is elliptical, roll the aluminum core with a roll with an elliptical abutment surface on the rolling mill, and squeeze it through the elliptical abutment surface Aluminum core, so that the overall cross section of the aluminum core is elliptical, the ratio of the short axis to the long axis of the aluminum core cross section is 1:3 to 1:5, and the aluminum core with an overall elliptical cross section is treated in an inert atmosphere. Annealing treatment, in the annealing treatment of the aluminum core, the annealing temperature is 330-350°C, and the annealing holding time is 2 hours; the thickness of the aluminum core is greater than the thickness of the copper strip, and the coppe...

Embodiment 2

[0077] A preparation process of copper-clad aluminum flat wire drawn and rolled by a die, comprising the following steps:

[0078] S1. Prepare materials: preset aluminum core and copper strip for standby, the overall cross-section of the aluminum core is elliptical, roll the aluminum core with a roll with an elliptical abutment surface on the rolling mill, and squeeze it through the elliptical abutment surface Aluminum core, so that the overall cross-section of the aluminum core is elliptical, the ratio of the short axis to the long axis of the aluminum core cross-section is 1:4, and the aluminum core with an overall elliptical cross-section is annealed in an inert atmosphere. In the annealing treatment of the aluminum core, the annealing temperature is 350°C, and the annealing holding time is 2 hours; the thickness of the aluminum core is greater than that of the copper strip, and the copper sheet is made of red copper, which has the advantages of good conductivity and high ha...

Embodiment 3

[0085] A preparation process of copper-clad aluminum flat wire drawn and rolled by a die, comprising the following steps:

[0086] S1. Prepare materials: preset aluminum core and copper strip for standby, the overall cross-section of the aluminum core is elliptical, roll the aluminum core with a roll with an elliptical abutment surface on the rolling mill, and squeeze it through the elliptical abutment surface Aluminum core, so that the overall cross-section of the aluminum core is elliptical, the ratio of the short axis to the long axis of the aluminum core cross-section is 1:4, and the aluminum core with an overall elliptical cross-section is annealed in an inert atmosphere. In the annealing treatment of the aluminum core, the annealing temperature is 350°C, and the annealing holding time is 2 hours; the thickness of the aluminum core is greater than that of the copper strip, and the copper sheet is made of red copper, which has the advantages of good conductivity and high ha...

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Abstract

The invention discloses a preparation process of a copper-clad aluminum flat wire drawn and rolled by a die. The preparation process comprises the following steps: preparing materials; carrying out copper-aluminum cladding welding; drawing and forming; roller machining; annealing the coated wire; and post-processing. The copper-aluminum coated wire drawing device has the beneficial effects that the copper-aluminum coated wire is subjected to drawing processing and roller processing by using the wire drawing die with the elliptical die groove and the flat wire roller with the elliptical roller surface respectively, so that the stability of the copper-aluminum coated wire in the drawing processing and roller processing processes can be effectively improved, and the copper-aluminum coated wire is prevented from being scratched; the stress of the copper-aluminum coated wire is more uniform, so that the wire is effectively prevented from cracking, and the copper-aluminum coated wire can be suitable for processing the wire with smaller diameter, and has the advantages that the wire is not easy to crack, the production efficiency is relatively high and the cost is relatively low.

Description

technical field [0001] The invention relates to a preparation process of a copper-clad aluminum flat wire, in particular to a preparation process of a copper-clad aluminum flat wire drawn and rolled by a die. Background technique [0002] Copper-clad aluminum wire refers to a wire with an aluminum core wire as the main body and a copper layer on the outer layer. It can be used as a conductor for coaxial cables and a wire and cable conductor for electrical equipment. The copper-clad aluminum wire adopts cladding welding manufacturing technology, and the high-quality copper strip is concentrically wrapped on the outer surface of the core wire such as aluminum rod or steel wire, and a firm metallurgical bond is formed between the copper layer and the core wire, so that the two Two different metal materials are combined into an inseparable whole, and can be drawn and annealed like a single metal wire. During the drawing process, the diameter of copper and aluminum changes in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/012
Inventor 李军民
Owner 苏州南达金属科技有限公司
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