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Process for narrow gap welding of aluminum alloy thick plates
Process for narrow gap welding of aluminum alloy thick plates
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机译:铝合金厚板窄缝焊接工艺
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摘要
The narrow gap butt welding of aluminum and aluminum alloy plates of a thickness more than 20 mm with a non-consumable electrode is conducted by inserting a filling material into a welding groove, applying a direct current of more than 300 A between said non-consumable electrode which does not have a sharp end and said plates to be welded with straight polarity, maintaining an arc length from 0.5 to 5 mm and shielding the welding groove area with a shielding gas comprising at least 50% helium.
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