Soldering flux suitable for aluminum steel brazing
A technology of steel brazing and brazing flux, which is applied in the direction of welding medium, welding equipment, welding/welding/cutting items, etc., can solve the problems of high quality and low price of consumable materials, inability to braze aluminum-copper dissimilar materials, and quality control difficulties and other problems, to achieve the effect of low price, excellent wetting and low price
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Embodiment 1
[0042] A flux suitable for brazing of aluminum and steel, in terms of mass percentage (wt.%), the chemical composition is: 0.01% rubidium fluoride (RbF), 11.0% cesium fluoride (CsF), 0.01% oxide Aluminum (Al 2 o 3 ), 5.0% potassium fluoride (KF), 0.001% zinc fluoride (ZnF 2 ), the balance being aluminum fluoride (AlF 3 ).
[0043] The brazing flux suitable for aluminum-steel brazing obtained by the above-mentioned proportions uses propane as a combustible gas for flame brazing, cooperates with Zn85-Al15 brazing filler metal, and uses Q235 steel plate + 5052 aluminum alloy plate, T 2 The combination of red copper + 6063 aluminum alloy plate is tested according to GB / T11363-2008 "Test Method for Strength of Brazed Joint", and the shear strength of the brazed joint reaches 130MPa-145MPa respectively.
Embodiment 2
[0045] A flux suitable for brazing aluminum and steel, in terms of mass percentage (wt.%), the chemical composition is: 0.001% rubidium fluoride (RbF), 45.0% cesium fluoride (CsF), 2.0% oxide Aluminum (Al 2 o 3 ), 0.01% potassium fluoride (KF), 0.04% zinc fluoride (ZnF 2 ), the balance being aluminum fluoride (AlF 3 ).
[0046] The brazing flux suitable for aluminum-steel brazing obtained by the above-mentioned proportions uses propane as a combustible gas for flame brazing, cooperates with Zn85-Al15 brazing filler metal, and uses Q235 steel plate + 5052 aluminum alloy plate, T 2 The combination of red copper + 6063 aluminum alloy plate is tested according to GB / T11363-2008 "Test Method for Strength of Brazed Joint", and the shear strength of the brazed joint reaches 130MPa-145MPa respectively.
Embodiment 3
[0048] A flux suitable for brazing of aluminum and steel, in terms of mass percentage (wt.%), the chemical composition is: 0.005% rubidium fluoride (RbF), 24.0% cesium fluoride (CsF), 0.6% oxide Aluminum (Al 2 o 3 ), 1.5% potassium fluoride (KF), 0.01% zinc fluoride (ZnF 2 ), the balance being aluminum fluoride (AlF 3 ).
[0049] The brazing flux suitable for aluminum-steel brazing obtained by the above-mentioned proportions uses propane as a combustible gas for flame brazing, cooperates with Zn85-Al15 brazing filler metal, and uses Q235 steel plate + 5052 aluminum alloy plate, T 2 The combination of red copper + 6063 aluminum alloy plate is tested according to GB / T11363-2008 "Test Method for Strength of Brazed Joint", and the shear strength of the brazed joint reaches 130MPa-145MPa respectively.
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