Aluminum alloy welding wire for high speed train and preparation method of aluminum alloy welding wire for high speed train
A technology for aluminum alloy welding wire and high-speed trains, applied in welding equipment, metal processing equipment, welding media, etc., can solve the problems of high hydrogen content and oxide inclusion content, unfavorable high-speed train operation safety, and high oxide inclusion content. Achieve the effects of improving temperature uniformity, reducing the incidence of welding leaks, and reducing hydrogen content
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Embodiment 1
[0031] The chemical composition of aluminum alloy welding wire is as follows:
[0032] Mg:5.0%, Ti:0.1%, Cr:0.2%, Mn:0.1%, La:0.1%, Te:0.1%, Bi:0.02%, Si:0.25%, Fe:0.2%, Zn:0.20%, The individual content of other impurity elements is ≤0.05%, the total content of other impurity elements is ≤0.15%, and the balance is Al.
[0033] Its preparation method is:
[0034] (1) Melting: Put aluminum ingots and intermediate alloys into the melting furnace for melting, add refining agent evenly into the melting furnace according to 0.05-0.1% of the total aluminum alloy, and use iron cages to put magnesium ingots into the melting furnace During the smelting process, electromagnetic stirring is used to accelerate the smelting speed. After the temperature of the molten aluminum reaches 700-730°C, a slag removal vehicle is used to remove slag from the molten aluminum in the melting furnace. The time for removing slag is controlled to be 30-40 minutes. The liquid smelting time is 8h;
[0035]...
Embodiment 2
[0045] The chemical composition of aluminum alloy welding wire is as follows:
[0046] Mg:5.5%, Ti:0.15%, Cr:0.25%, Mn:0.15%, La:0.15%, Te:0.15%, Bi:0.04%, Si:0.20%, Fe:0.15%, Zn:0.18%, The individual content of other impurity elements is ≤0.05%, the total content of other impurity elements is ≤0.15%, and the balance is Al.
[0047] Its preparation method is:
[0048] (1) Melting: Put aluminum ingots and intermediate alloys into the melting furnace for melting, add refining agent evenly into the melting furnace according to 0.05-0.1% of the total aluminum alloy, and use iron cages to put magnesium ingots into the melting furnace During the smelting process, electromagnetic stirring is used to accelerate the smelting speed. After the temperature of the molten aluminum reaches 700-730°C, a slag removal vehicle is used to remove slag from the molten aluminum in the melting furnace. The time for removing slag is controlled to be 30-40 minutes. The liquid smelting time is 6h;
...
Embodiment 3
[0059] The chemical composition of aluminum alloy welding wire is as follows:
[0060] Mg:4.0%, Ti:0.06%, Cr:0.1%, Mn:0.05%, La:0.05%, Te:0.05%, Bi:0.01%, Si:0.23%, Fe:0.16%, Zn:0.18%, The individual content of other impurity elements is ≤0.05%, the total content of other impurity elements is ≤0.15%, and the balance is Al.
[0061] Its preparation method is:
[0062] (1) Melting: Put aluminum ingots and intermediate alloys into the melting furnace for melting, add refining agent evenly into the melting furnace according to 0.05-0.1% of the total aluminum alloy, and use iron cages to put magnesium ingots into the melting furnace During the smelting process, electromagnetic stirring is used to accelerate the smelting speed. After the temperature of the molten aluminum reaches 700-730°C, a slag removal vehicle is used to remove slag from the molten aluminum in the melting furnace. The time for removing slag is controlled to be 30-40 minutes. The liquid smelting time is 7h;
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