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Continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide and preparation method of continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide

A technology of aluminum oxide and composite aluminum, applied in welding equipment, welding/welding/cutting articles, welding media, etc., can solve the problems of reduced toughness and plasticity, increased brittleness, unfavorable extrusion molding, etc., to improve toughness and Effect of plasticity, elimination of brittleness, and improvement of extrusion forming performance

Inactive Publication Date: 2016-08-10
GUILIN QINGTONG NON FERROUS METAL ARTS & CRAFTS MATERIAL DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems that the existing continuous brazing composite aluminum-based brazing wire core material has increased brittleness, reduced toughness and plasticity after adding low-melting point alloys, and is not conducive to extrusion molding, the present invention provides a continuous brazing using nano-alumina Welding composite aluminum-based brazing wire and preparation method thereof

Method used

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  • Continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide and preparation method of continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide
  • Continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide and preparation method of continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide
  • Continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide and preparation method of continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide

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Experimental program
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Effect test

Embodiment 1

[0040] The continuous brazing composite aluminum-based brazing wire using nano-alumina is composed of an aluminum-based brazing core material with grooves on the outer surface and a non-corrosion composite of aluminum wrapped in the groove on the surface of the core material. Flux and the moisture-proof coating sprayed on the surface of the flux. The aluminum-based brazing wire core material is an aluminum alloy profile with a "C"-shaped cross-section and a circular outer circumference. The outer diameter of the circle is ф2.0mm, and the weight ratio of the chemical composition of the solder is: Al: 74; Si : 5; Zn: 13; Cu: 6; Ni: 2; trace elements: Sr: 0.02; Mg: 0.01; rare earth Ce: 0.02, nano-Al 2 o 3 : 0.01. The weight ratio of each component of the composite flux is: Nocolok (K 3 AlF 6 +KAIF 4 Eutectic): 50; KBr: 10; CsF: 5, the state is a 300 mesh powder mixture. The carrier of the composite flux is polyethylene glycol with a relative molecular weight of 6000, and it...

Embodiment 2

[0044] Continuous brazing composite aluminum-based brazing wire core material has a "Y"-shaped cross-sectional shape and a circular profile on the outer circumference. The diameter of the circle is Φ8.0mm, and the weight ratio of the chemical components of the brazing alloy is: AL;81.5; Si: 12; Zn: 4; Cu: 2; Ni: 0.5, Sr: 0.1; Mg: 0.1; Ce: 0.01; Nano Al 2 o 3 : 0.15. The weight ratio of each component of the composite flux is: Nocolok (K 3 AlF 6 +KAIF 4 Eutectic): 60; KBr: 12; CsF: 6, the state is a powder mixture of 800 mesh. The carrier of the composite flux is polyethylene glycol with a relative molecular weight of 10,000, and its weight ratio is 22.

[0045] The weight ratio of each component of the composite brazing wire coating layer is: Nocolok (K 3 AlF 6 +KAIF 4 Eutectic): 40; KBr: 8, synthetic resin: 52, and the coating thickness on the wire surface is 80 μm.

[0046] All the other are with embodiment 1.

Embodiment 3

[0048] The continuous brazing composite aluminum-based brazing wire using nano-aluminum oxide has a cross-sectional shape of a "c"-shaped structure and a circular outer circumference. The outer diameter of the circle is ф2.5mm. The weight ratio of chemical composition is: Al: 73; Si: 10; Zn: 10; Cu: 4; Ni: 3; trace elements are: Sr: 0.01; Mg: 0.05; rare earth Ce: 0.1, nanometer Al 2 o 3 : 0.2. The weight ratio of each component of the composite flux is: Nocolok (K 3 AlF 6 +KAIF 4 Eutectic): 55; KBr: 11; CsF: 4, the state is a 300-mesh powder mixture. The carrier of the composite flux is polyethylene glycol with a relative molecular weight of 8000, and its weight ratio is 30.

[0049] The weight ratio of each component of the composite aluminum-based brazing wire coating layer is: Nocolok (K 3 AlF 6 +KAIF 4 Eutectic): 50; KBr: 10, synthetic resin: 40, the coating thickness on the wire surface is 40μm.

[0050] All the other are with embodiment 1.

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Abstract

The invention discloses a continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide and a preparation method of the continuous brazing composite aluminum-based brazing wire applying the nanometer aluminum trioxide. The continuous brazing composite aluminum-based brazing wire applying the nanometer aluminum trioxide is composed of an aluminum-based brazing filler metal core material with a groove formed in the outer surface, a no-corrosive flux used for aluminum and applied in the peripheral groove of the core material in a wrapping manner, and a coating layer sprayed on the surface of the composite brazing flux. The obtained product is excellent in material performance, easy to machine and form, good in brazing process performance, capable of fully adapting to efficient and continuous brazing and excellent in brazing connector performance.

Description

technical field [0001] The invention belongs to the technical field of aluminum-based brazing material, and in particular relates to an aluminum alloy continuous brazing composite aluminum-based brazing wire using nano-alumina and a preparation method thereof. Background technique [0002] With the introduction of laser heat source into the field of brazing technology, aluminum alloy continuous brazing (high-efficiency brazing) technology has emerged, making the brazing technology itself have the technical advantages of being able to meet thin plates, complex joint structures, and no deformation. As a result, it is widely welcomed in high-end manufacturing fields such as vehicles. [0003] The existing aluminum alloy continuous brazing wires on the market are usually composite aluminum-based brazing wires, that is, the extruded aluminum-based brazing material and the non-metallic aluminum brazing flux are tightly combined to form a round shape by means of manufacturing. , I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/28B23K35/362B23K35/40B23K103/10
CPCB23K35/286B23K35/0227B23K35/0266B23K35/362B23K35/406B23K2103/10
Inventor 阳家盛
Owner GUILIN QINGTONG NON FERROUS METAL ARTS & CRAFTS MATERIAL DEV CO LTD
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