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A kind of continuous extrusion equipment for preparing graphene aluminum wire

An extrusion equipment and graphene technology are applied in the field of continuous extrusion equipment for preparing graphene aluminum wires, which can solve problems such as affecting the production efficiency of aluminum wires, limit wire length, and deteriorate material properties, and achieve energy saving and performance stability. Good, good product performance

Active Publication Date: 2021-10-08
新疆烯金石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the traditional melting casting method, due to the large density difference between the two and the non-wetting of the interface, it is difficult for graphene to disperse uniformly in the aluminum liquid. In addition, the high-temperature interface reaction between the two may occur during the material preparation process to form Al 4 C 3 Brittle phase, deteriorating material properties
A disadvantage of the traditional powder metallurgy method is the discontinuity of production, the length of the wire is limited, and a series of auxiliary operations such as separation, pressing, and filling of the billet are required between the extrusion of the front and rear billets, which affects the production efficiency of the aluminum wire.

Method used

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  • A kind of continuous extrusion equipment for preparing graphene aluminum wire
  • A kind of continuous extrusion equipment for preparing graphene aluminum wire
  • A kind of continuous extrusion equipment for preparing graphene aluminum wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of graphene / aluminum composite material, the method comprises the following steps:

[0034] (1) Take graphene and -200~400 purpose aluminum alloy powder, graphene accounts for 0.5% of total mass;

[0035] (2) Graphene is ultrasonically dispersed in alcohol solution for 0.5h to obtain graphene / alcohol mixed solution;

[0036] (3) adding the aluminum powder into the graphene / alcohol mixed solution in batches, at a speed of 100r / min, at a temperature of 40°C, and mixing for 2 hours to obtain a semi-solid paste graphene / aluminum mixed powder;

[0037] (4) Place the uniformly mixed graphene / aluminum powder at the feeding place of the continuous extrusion equipment;

[0038] (5) Open the feed valve, and perform dynamic vacuum degassing during the downward flow of the graphene / aluminum mixed powder. The flow rate is 1.0L / min, the heating temperature is 300°C, and the vacuum degree is 2.0×10 -3 Pa;

[0039] (6) Continuously extruding the graphene / aluminu...

Embodiment 2

[0041] A preparation method of graphene / aluminum composite material, the method comprises the following steps:

[0042] (1) Take graphene and -200~400 purpose aluminum alloy powder, graphene accounts for 1.0% of total mass;

[0043] (2) Graphene is ultrasonically dispersed in alcohol solution for 1.0h to obtain graphene / alcohol mixed solution;

[0044] (3) Add the aluminum powder into the graphene / alcohol mixed solution in batches, at a rotating speed of 500r / min, at a temperature of 60°C, and mix for 1h to obtain a semi-solid paste graphene / aluminum mixed powder;

[0045] (4) Place the uniformly mixed graphene / aluminum powder at the feeding place of the continuous extrusion equipment;

[0046] (5) Open the feed valve, and perform dynamic vacuum degassing during the downward flow of the graphene / aluminum mixed powder, with a flow rate of 5.0L / min, a heating temperature of 400°C, and a vacuum degree of 5.0×10 -3 Pa;

[0047] (6) Continuously extruding the graphene / aluminum p...

Embodiment 3

[0049] A preparation method of graphene / aluminum composite material, the method comprises the following steps:

[0050] (1) Take graphene and -200~400 purpose aluminum powder, graphene accounts for 0.7% of total mass;

[0051] (2) Graphene is ultrasonically dispersed in alcohol solution for 1.5h to obtain a mixed solution of graphene and alcohol;

[0052] (3) Add the aluminum powder into the graphene / alcohol mixed solution in batches, at a speed of 250r / min, at a temperature of 50°C, mix for 1.5h to obtain a semi-solid paste graphene / aluminum mixed powder;

[0053] (4) Place the uniformly mixed graphene / aluminum powder at the feeding place of the continuous extrusion equipment;

[0054] (5) Open the feed valve, and perform dynamic vacuum degassing during the downward flow of the graphene / aluminum mixed powder, with a flow rate of 3.5L / min, a heating temperature of 350°C, and a vacuum degree of 3.5×10 -3 Pa;

[0055] (6) Continuously extruding the graphene powder after vacuu...

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Abstract

The invention provides a continuous extrusion equipment for preparing graphene aluminum wire, the continuous extrusion equipment has an extrusion die 1, which is arranged on the mold core seat 2 of the extrusion die 1, and is used for guiding and mixing powder The flow channel 3 includes an axial section 31 , a split section 32 and a helical section 33 . The graphene aluminum wire prepared by the technical solution provided by the invention has the strength of aluminum alloy and the conductivity of pure aluminum at the same time; the uniformity of the structure is good, and the performance stability is good; the utilization rate of the material is high, generally up to 95%; The heat rises without heating, saving energy; fewer processes, high production efficiency, and high product yield; continuous production of products can be realized without interval time; suitable for both large-scale production and small-batch multi-variety production; product performance is good , high dimensional accuracy, good finish.

Description

technical field [0001] The invention relates to a continuous extrusion equipment, in particular to a continuous extrusion equipment for preparing graphene-aluminum wires. Background technique [0002] With the improvement of power transmission and transformation technology and the development of power transmission and transformation lines, more and more large spans require the use of wires that can transmit large currents and withstand large tensions. Aluminum alloy wires are more and more showing their superiority in this aspect, and they have exclusive advantages in long-distance, large-span, and ultra-high voltage power transmission. At present, the materials of aluminum alloy wires include pure aluminum and aluminum-magnesium-silicon alloy, but the matching of the mechanical properties and electrical properties of the two is relatively low. Pure aluminum has good electrical conductivity, but its strength is low; the addition of Mg, Si and other alloying elements in alum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/20B22F3/22B22F5/12
CPCB22F3/20B22F3/22B22F5/12B22F2003/208
Inventor 卢科伟荣辉王杰丰王成军钟小勇
Owner 新疆烯金石墨烯科技有限公司
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