Welding method using seamed flux-cored welding wire for a ship group standing welding robot

Abstract

The invention discloses a welding method for a ship group vertical welding robot using a seamed flux-cored welding wire, which is used for flat fillet welding in the welding group vertical parts, and the size of the welding leg is 6mm-6.5mm, comprising the following steps: The workpiece to be welded is subjected to positioning welding; S2. Use a metal gas shielded welding robot to weld the butt welded seam. During welding, a seamed flux-cored welding wire is used. The diameter of the welding wire is between 1.2mm-1.4mm. Parameters such as current, welding voltage, welding speed, swing frequency, swing amplitude and the limit dwell time of the welding torch control the welding process, and inert gas is used to protect the weld seam during the welding process. The use of seamed flux-cored wire can reduce production costs. The above process parameters are used in the welding process to make the cross-section of the weld seam always an isosceles triangle. .

Description

technical field [0001] The invention relates to a welding method using a seamed flux-cored welding wire for a ship group vertical welding robot. Background technique [0002] In the ship production process, the small components such as the pipe section and the double bottom rib are the most basic structure of the ship. The welding positions of such small vertical parts are often concentrated in flat fillet welding. For flat fillet welding, the welding process is relatively simple. Moreover, for small vertical components, the welding space is relatively large, and welding robots are often used to weld them in the prior art. In existing production, imported seamless flux-cored wires are usually used for welding when welding small sub-components. However, due to the complex production process of seamless flux-cored welding wire, its purchase price is relatively high, which is about 5 times that of domestic seamed flux-cored welding wire. In order to reduce the production cos...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect that the direct quality of the small group vertical welding robot in the prior art is not stable after using the seamed flux-cored wire, and the performance of the weld seam is not up to standard, and to provide a ship group vertical welding robot using a Welding method of seam flux cored wire

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