Arc stabilizer for underwater wet welding

Abstract

The invention discloses an arc stabilizer for underwater wet welding. The arc stabilizer comprises a high-pressure gas inlet pipeline, a shielding gas inlet pipe, a solder wire, a cooling water inlet pipeline, a cooling water outlet pipeline, a conducting rod, a blocking plate, a welding nozzle, iron cores, magnet exciting coils and a protective cover. The whole device is in a cylindrical structure which is covered by the protective cover and is sealed except gas and water inlet and outlet pipes, the protective cover is made of an insulating material and is insulated from a conducting nozzle, a high-pressure gas pipeline is arranged inside the protective cover, and gases enter the device from the high-pressure gas inlet pipeline on the upper portion. The conducting rod is arranged at the center, the solder wire penetrates through the middle of the conducting rod, a circle of shielding gas channel surrounds the conducting rod, and shielding gases enter the device through the shielding gas inlet pipe. Four iron cores are arranged on the external circle, and magnet exciting coils are twined in the middle of iron cores. Cooling water is filled around iron cores and is injected from a water inlet pipeline, and the water outlet pipeline is directly connected with environmental water. According to the arc stabilizer, a large amount of water is drained through high-pressure gases, a half-dry environment is produced for electric arcs in a water environment, and simultaneously, magnetic constraint is conducted through a magnetic control device to stabilize underwater welding arcs.

Description

technical field [0001] The invention relates to a welding device, in particular to an arc stabilization device for underwater wet welding. Background technique [0002] Using underwater wet welding, the workpiece and the arc are completely placed in the water, and the arc is only protected by the gas bubbles generated by welding. The arc is difficult to stabilize and the welding quality is difficult to guarantee. According to many underwater welding practices, the voltage and current used in underwater welding must be increased, otherwise the arc will be difficult to generate and the weld shape will be difficult. Under large specifications, the welding arc burns at the end of the liquid stream, and the reaction force of the arc acts on the liquid stream, causing the liquid stream to be thrown around, resulting in large splashes and poor weld formation. Therefore, in order to realize the control of different droplet transfer forms, it is necessary to control the shape of the...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of unstable arc and droplet in underwater wet welding described in the background technology, the present invention provides an arc stabilization device for underwater wet welding, which can be used to create a semi-dry environment and a semi-dry environment for the arc in the water environment Conduct magnetic confinement to achieve the purpose of stabilizing the welding arc in water

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