Oblique position plumb electric welding method

Abstract

The invention relates to the technical field of ship welding, in particular to an oblique position plumb electric welding method. The method comprises the following steps that the two sides of a groove of a to-be-welded steel plate which is arranged obliquely relative to the horizontal plane are subjected to local surface treatment, and rust, moisture and oil stains are removed; a liner is attached to the back side of the to-be-welded steel plate; CO2 serves as protective gas, a welding gun releases welding wires to the inside the groove of the to-be-welded steel plate so that welding can be conducted, the whole groove is filled with a liquid metallic molten pool, and forced cooling molding is conducted on a weld joint through the liner on the back side of the groove and a water cooling copper sliding block located on the same side of the welding wires; and the angle of the welding wires is perpendicular to the horizontal plane, and the included angle beta between the welding wires and the to-be-welded steel plate is 15-45 degrees. According to the welding mode, the groove at the bottom can be automatically filled by the liquid molten welding wires under the action of gravity, the welding firmness is improved, the angle between the welding wires and the to-be-welded steel plate is 15-45 degrees, the liquid molten welding wires can be assisted in flowing in the groove, the flowing speed is high, and the welding efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of ship welding, in particular to a vertical gas-electric welding method in an inclined position. Background technique [0002] In the shipbuilding industry, vertical gas electric welding is a welding process that can be welded on one side and formed on both sides. The weld seam is formed at one time, and the welding efficiency is extremely high. It is widely used in the pre-loading and loading stages of ships. The inclination angle of weldable seams ranges from 75° to 90°, and some weld seams have an inclination angle of 45° to 75° during the pre-loading and loading stages. These welds cannot be used for vertical gas-electric welding at present, and only semi-automatic or automatic CO welding can be used. 2 Gas shielded welding or multi-layer multi-pass automatic welding for welding. [0003] But using semi-automatic or automatic CO 2 There are many welding layers during gas shielded welding, and the weld...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a vertical gas-electric welding welding method with an inclined position, which can solve the problem of low welding efficiency in the prior art and the inclination angle range of the weld seam can only be 75-90°

Images