Manufacturing method of tin bismuth alloy welding wire
A technology of tin-bismuth alloy and welding wire, which is applied in the field of preparation of tin-bismuth alloy welding wire, can solve problems such as core wrapping, and achieve the effects of improved plasticity, enhanced softening ability, and improved deformation ability
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Embodiment 1
[0032] This embodiment provides a method for preparing a tin-bismuth alloy welding wire with a diameter of 0.5 mm, comprising the following steps:
[0033] (1) Prefabricated alloy
[0034] According to the mass ratio of bismuth and tin is 58:42, the raw materials are prepared, placed in an iron pot electric furnace, heated, after the tin ingots and bismuth ingots are completely melted, fully stirred for several minutes, and cast into small ingots after the stirring is stopped. The ingot is in the shape of a long strip of about 1 kg.
[0035] (2) Continuous smelting and down-draw continuous casting
[0036] The above pre-prepared tin-bismuth alloy ingots were melted in a resistance furnace with a down-drawing continuous casting device, and the casting device was equipped with eight down-drawing crystallizers with a diameter of 6 mm. The resistance furnace uses an iron crucible as a container, the effective height of the crucible is 300 mm, and a liquid level height scale is s...
Embodiment 2
[0043] This embodiment provides a method for preparing a tin-bismuth alloy welding wire with a diameter of 1.2mm, comprising the following steps:
[0044] (1) Prefabricated alloy
[0045] According to the mass ratio of bismuth and tin is 58:42, the raw materials are prepared, placed in an iron pot electric furnace, heated, after the tin ingots and bismuth ingots are completely melted, fully stirred for several minutes, and cast into small ingots after the stirring is stopped. The ingot is in the shape of a long strip of about 1 kg.
[0046] (2) Continuous smelting and down-draw continuous casting
[0047] The above pre-prepared tin-bismuth alloy ingots were melted in a resistance furnace with a down-drawing continuous casting device, and the casting device was equipped with a down-drawing crystallizer with a diameter of 12 mm. The resistance furnace uses an iron crucible as a container, the effective height of the crucible is 400mm, and a liquid level height scale is set on ...
Embodiment 3
[0054] This embodiment provides a method for preparing a tin-bismuth alloy welding wire with a diameter of 1.0 mm, comprising the following steps:
[0055] (1) Prefabricated alloy
[0056] According to the mass ratio of bismuth and tin is 58:42, the raw materials are prepared, placed in an iron pot electric furnace, heated, after the tin ingots and bismuth ingots are completely melted, fully stirred for several minutes, and cast into small ingots after the stirring is stopped. The ingot is in the shape of a long strip of about 1 kg.
[0057] (2) Continuous smelting and down-draw continuous casting
[0058] The pre-prepared tin-bismuth alloy ingot was melted in a resistance furnace with a down-draw continuous casting device, and the casting device was equipped with eight down-draw crystallizers with a diameter of 8mm. The resistance furnace uses an iron crucible as a container, the effective height of the crucible is 300 mm, and a liquid level height scale is set on the inner...
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