Method for one-point breakdown in horizontal welding of CO2 gas shield welding

• Main Authors: NA JI-MIN, CHANG LINYE
• Format: Patent
• Language: Chinese; English
• Published: 30.09.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention provides a CO2 gas shield welding horizontal welding one-point breakdown method which comprises the following steps: S1, grinding a groove of a workpiece to be welded, and controlling the truncated edge thickness of the groove; s2, arc striking plates are additionally arranged on the workpieces to be welded, the workpieces to be welded are assembled to form a welding bead, and the assembling gap is determined according to the diameter of a welding wire; s3, special protection is not needed on the back face of the welding bead, and transverse arc breaking backing welding is conducted through a welding gun along the front face of the welding bead through a one-point breakdown method till a whole welding seam is welded; and S4, checking the formed welding meat. By means of the CO2 gas shielded welding horizontal welding one-point breakdown method, welding meat can be prevented from falling, the technical problem of quality defects of horizontal welding seams of the box-type component is solved, the