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Method for producing copper and aluminium composite slide wire

A technology of copper-aluminum compounding and production methods, which is applied in the field of material processing, can solve problems such as weak copper-aluminum binding force, large amount of denaturation, and influence on electrical conductivity, etc., and achieve good electrical performance, excellent bonding rate, and good bonding Effect

Inactive Publication Date: 2009-09-16
浙江力博实业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 1. Long process: Copper alloy rods need to go through 5-7 times of drawing to make prefabricated copper billets with complex cross-sections; aluminum alloy rods need to go through 4-7 times of drawing to make prefabricated aluminum billets with complex cross-sections
[0004] 2. The process is complicated and the production efficiency is low: in the copper-aluminum rod drawing process, drawing molds of different sizes need to be prepared for each pass, and the drawing tools need to be replaced each time
[0005] 3. Copper-aluminum bonding force is poor: the amount of denaturation in the composite drawing process is not easy to be too large, resulting in weak copper-aluminum bonding force
[0007] 5. Poor electrical performance: Copper-aluminum sliding contact wires are mainly used in rail and maglev trains and other fields, where large currents pass through. The non-conductive pollutants on the copper-aluminum joint surface of this product will affect the electrical conductivity

Method used

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  • Method for producing copper and aluminium composite slide wire
  • Method for producing copper and aluminium composite slide wire
  • Method for producing copper and aluminium composite slide wire

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Embodiment Construction

[0033] like figure 2 Shown, the production method of copper-aluminum composite trolley line of the present invention, comprises the following steps:

[0034] 1. Continuous extrusion of prefabricated copper billets

[0035] Using φ12mm—φ30mm copper alloy rods as raw materials, using TJL300 continuous extruder, the copper alloy rods are continuously forced into the die cavity of the extruder through the feeding port of the extruder, and heat is generated by the gravity rotation friction of the extrusion wheel, so that the copper The alloy rod is extruded into the extrusion die in a specially designed vacuum cavity to realize thermal deformation, combined with image 3 As shown, the die cavity of the extruder of the present invention is mainly composed of three parts: the rubber introduction head 1, the cavity 2 and the extrusion die 3. The rubber introduction head 1 is under high pressure at 800 ° C, and the colloidal copper 4 is introduced from the groove 8 of the extrusion ...

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Abstract

The invention discloses a method for producing copper and aluminium composite slide wire, belonging to the technical field of material machining, characterized by comprising the following steps: making copper alloy bar into a prefabricated copper blank by using the continuous extruding process, extruding the made prefabricated copper blank and aluminium alloy bar in a continuous extruding machine for compositing, drawing, aligning, obtaining the copper and aluminium composite slide wire. The invention adopts the new continuous extruding process, the coiling product with the length of thousands of meters or more can be continuously extruded only by using the continuous feeding, the usage rate of the material is also high and can reach 95% to 98%. Copper and aluminium are composited in a vacuum cavity by extruding, the combined force is improved, the composited surface is clean and neat without the impurity, the electric performance is better.

Description

technical field [0001] The invention relates to a production method of a copper-aluminum composite trolley line, belonging to the technical field of material processing. Background technique [0002] At present, copper-aluminum trolley lines are mainly used in technical fields such as high-speed rail and maglev trains, and are used to provide power to trains. The existing copper-aluminum composite trolley line processing technology is as follows: figure 1 As shown, the multi-channel drawing and composite drawing processes are mainly used. This process mainly has the following disadvantages: [0003] 1. Long process: Copper alloy rods need to go through 5-7 times of drawing to make prefabricated copper billets with complex cross-sections; aluminum alloy rods need to go through 4-7 times of drawing to make prefabricated aluminum billets with complex cross-sections . [0004] 2. The process is complicated and the production efficiency is low: in the copper-aluminum rod drawi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M1/28B21C23/22B21C31/00B21C1/02
Inventor 姚幼甫毛毅中闫丰陈建华
Owner 浙江力博实业股份有限公司
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