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Caesium rubidium soldering flux containing gallium oxide

A gallium oxide and cesium-rubidium brazing technology, applied in the field of gallium oxide-containing cesium-rubidium brazing flux, can solve problems such as difficult quality control during production, inability to remove oxides at the same time, complex formulas, etc., and achieve high reliability, green manufacturing, excellent The effect of wetting and simple preparation process

Active Publication Date: 2015-04-29
ZHEJIANG YONGWANG WELDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing research results show that it is very difficult to remove the oxides on the surface of aluminum alloy, steel and copper alloy at the same time by using a flux
The literature shows that the CsAlF developed in recent years 4 , KCsAlF 4 Flux can remove the oxides on the surface of aluminum alloy and copper alloy well and at the same time, thus solving the brazing problem of aluminum-copper dissimilar materials, but it still cannot remove the oxides on the surface of aluminum alloy and steel (or stainless steel) at the same time ; CN201310445105.3 recommends "a new type of brazing flux for stainless steel and aluminum brazing" that can solve the brazing of aluminum-steel dissimilar materials, but it cannot braze aluminum-copper dissimilar materials; CN201410076059.9 discloses a " Flux containing cesium and rubidium that can braze aluminum steel and aluminum copper", but its formula is too complicated, and quality control during production is very difficult

Method used

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  • Caesium rubidium soldering flux containing gallium oxide
  • Caesium rubidium soldering flux containing gallium oxide
  • Caesium rubidium soldering flux containing gallium oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A cesium-rubidium brazing flux containing gallium oxide, according to the molar formula ratio, its composition is: 0.12 moles of rubidium fluoride (RbF), 0.5 moles of cesium fluoride (CsF), 0.001 moles of aluminum oxide (Al 2 o 3 ), 0.02 moles of potassium fluoride (KF), 0.0001 moles of gallium oxide (Ga 2 o 3 ), 0.3589 moles of aluminum fluoride (AlF 3 ).

[0042]The new gallium oxide-containing cesium-rubidium brazing flux obtained by the above-mentioned ratio adopts propane as combustible gas for flame brazing, cooperates with Zn98-Al2, Al51.5-Si6.5-Zn42, Al88-Si12 brazing filler metals, and uses 304 stainless steel +6063 aluminum alloy plate, Q235 steel plate +6063 aluminum alloy plate, T2 copper +5052 aluminum alloy plate, according to GB / T 11363-2008 "Test Method for Strength of Brazed Joint", the shear strength of the brazed joint reaches 110MPa~140MPa respectively .

Embodiment 2

[0044] A cesium-rubidium brazing flux containing gallium oxide, according to the molar formula ratio, its composition is: 0.5 moles of rubidium fluoride (RbF), 0.12 moles of cesium fluoride (CsF), 0.2 moles of aluminum oxide (Al 2 o 3 ), 0.001 moles of potassium fluoride (KF), 0.02 moles of gallium oxide (Ga 2 o 3 ), 0.159 moles of aluminum fluoride (AlF 3 ).

[0045] The new gallium oxide-containing cesium-rubidium brazing flux obtained by the above-mentioned ratio adopts propane as combustible gas for flame brazing, cooperates with Zn98-Al2, Al51.5-Si6.5-Zn42, Al88-Si12 brazing filler metals, and uses 304 stainless steel +6063 aluminum alloy plate, Q235 steel plate +6063 aluminum alloy plate, T2 copper +5052 aluminum alloy plate, according to GB / T 11363-2008 "Test Method for Strength of Brazed Joint", the shear strength of the brazed joint reaches 110MPa~140MPa respectively .

Embodiment 3

[0047] A cesium-rubidium brazing flux containing gallium oxide, according to the molar formula ratio, its composition is: 0.25 moles of rubidium fluoride (RbF), 0.25 moles of cesium fluoride (CsF), 0.01 moles of aluminum oxide (Al 2 o 3 ), 0.01 moles of potassium fluoride (KF), 0.001 moles of gallium oxide (Ga 2 o 3 ), 0.479 mol aluminum fluoride (AlF 3 ).

[0048] The new gallium oxide-containing cesium-rubidium brazing flux obtained by the above-mentioned ratio adopts propane as combustible gas for flame brazing, cooperates with Zn98-Al2, Al51.5-Si6.5-Zn42, Al88-Si12 brazing filler metals, and uses 304 stainless steel +6063 aluminum alloy plate, Q235 steel plate +6063 aluminum alloy plate, T2 copper +5052 aluminum alloy plate, according to GB / T 11363-2008 "Test Method for Strength of Brazed Joint", the shear strength of the brazed joint reaches 110MPa~140MPa respectively .

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Abstract

The invention discloses a caesium rubidium soldering flux containing gallium oxide, belonging to the brazing material field of non-metallic materials. The caesium rubidium soldering flux containing gallium oxide is characterized in that the caesium rubidium soldering flux containing gallium oxide comprises the following components in proportion in mole number: 0.12-0.5 mole of rubidium fluoride (RbF), 0.12-0.5 mole of cesium fluoride (CsF), 0.001-0.2 mole of aluminium oxide (Al2O3), 0.001-0.02 mole of potassium fluoride (KF), 0.0001-0.02 mole of gallium oxide (Ga2O3), and 0.159-0.479 mole of aluminium fluoride (AlF3). According to the caesium rubidium soldering flux containing the gallium oxide, the requirement on brazing the aluminium-copper, the aluminium-steel and the aluminium-aluminium can be satisfied simultaneously and the caesium rubidium soldering flux containing gallium oxide has high activity.

Description

technical field [0001] The invention belongs to the field of brazing materials of non-metallic materials, and in particular relates to a gallium oxide-containing cesium-rubidium flux capable of brazing aluminum-steel, aluminum-copper and aluminum-aluminum. Background technique [0002] With the rapid development of aerospace, rail transit, energy industry and refrigeration technology, in addition to the extensive use of aluminum-aluminum structures, there are more and more applications for composite structures of aluminum alloy and copper, aluminum alloy and steel, aluminum-copper, The structure of aluminum-steel bimetallic composite materials has been widely used in hardware products, power stations, home appliances and other fields. However, so far, the "connection" of aluminum-steel bimetallic composites has been an unresolved problem. [0003] The applicant has searched the literature, and in the published Chinese patent literature, such as CN201310445105.3 recommended ...

Claims

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Application Information

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IPC IPC(8): B23K35/363
CPCB23K35/3605B23K35/361B23K35/362
Inventor 薛鹏薛松柏张俊雄杨金龙
Owner ZHEJIANG YONGWANG WELDING MATERIALS CO LTD
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