Welding flux welding method applicable to ship welding line or fillet welding line

Abstract

The invention relates to a welding flux welding method applicable to a ship welding line or a fillet welding line. The method comprises the following steps that a welding bead is paved with welding flux for performing coverage and protection, and the thickness is 25-30 mm; a welding wire with the MAG welding model being ER50-6 is loaded in an automatic welding trolley, and the angle of the welding wire is adjusted; the welding voltage of the automatic welding trolley is adjusted to 32-35 V, and the welding current is 280-300 A; the automatic welding trolley is started, the travelling speed of the automatic welding trolley is 44 cm / min, and welding flux is removed in time after a section is welded, and whether offset welding of welding line forming occurs or not is checked. The SJ101 welding flux is adopted for coverage and protection welding, and meanwhile the automatic welding trolley and the ER50-6 welding wire are adopted for welding: the welding quality and molding appearance are ensured, no artificial polishing or slag removal is needed, the welding efficiency is greatly improved, the welding operation is flexible, the welding flux can deal with the small welding space, and the method is a great improvement particularly for the ship welding line or the fillet welding line.

Description

technical field [0001] The invention relates to the technical field of steel structure welding, in particular to a flux welding method suitable for ship welds or fillet welds. Background technique [0002] In the manufacture of steel structures, there will be a large number of ship welds or fillet welds that need to be welded. Usually, the MAG welding method is used for welding. The operating welder must have skilled operation skills to ensure the quality and appearance of the welds. Forming, and welding spatter is still unavoidable during the welding process, the working environment is harsh, and a large amount of manual slag removal and grinding is required at the same time, which is time-consuming and laborious. In addition, the semi-automatic submerged arc welding machine head that is often used in welding processing is heavy and the handling is extremely difficult. It is inconvenient, and it cannot be welded for narrow welds such as ship welds or fillet welds, which has...

AI Technical Summary

Problems solved by technology

[0002] In the manufacture of steel structures, there will be a large number of ship welds or fillet welds that need to be welded. Usually, the MAG welding method is used for welding. The operating welder must have skilled operation skills to ensure the quality and appearance of the welds. Forming, and welding spatter is still unavoidable during the welding process, the working environment is harsh, and a large amount of manual slag removal and grinding is required at the same time, which is time-consuming and laborious. In addition, the semi-automatic submerged arc welding machine head that is often used in welding processing is heavy and the handling is extremely difficult. It is inconvenient, and it cannot be welded in narrow places such as ship welds or fillet welds, which has limitations