Submerged-arc welding tool

Abstract

The invention disclose a submerged-arc welding tool. According to the submerged-arc welding tool, a positioning assembly is used for limiting the positions of plates and gaskets connected to the plates, and connecting seams are formed between the plates and are filled with welding flux; welding heads of two welding assemblies are electrically connected to a welding power source, one welding head is connected to the welding power source in series to form a main circuit, the other welding head is connected to a main circuit in parallel to form a first branch circuit, and the plates are connected to the main circuit in parallel to form a second branch circuit; a feeding assembly provides welding wires for the two welding heads; the two welding assemblies are connected to an adjusting mechanism in a rotating mode, the adjusting mechanism can adjust the welding wires on the two welding heads to intersect at an intersection point and be located over the connecting seams, and an electric arc is generated at the intersection point to communicate with the main circuit, the first branch circuit and the second branch circuit and weld the connecting seams; and a walking mechanism can drive the welding assemblies, the feeding assembly and the adjusting mechanism to move in the extending direction of the connecting seams. The submerged-arc welding tool has the advantages that the phenomenon that hot cracks are generated at the connecting seams or weld penetration occurs to the gaskets can be avoided, the welding steps are simple, welding can be automatically completed, and the welding efficiency is high.

Description

technical field [0001] The invention relates to the technical field of welding processing, in particular to a submerged arc welding tool. Background technique [0002] In the ship's hull structure, the thinner ship plates are usually connected by welding. [0003] Especially for container ship plates, the thickness of the ship plate is generally not more than 13 mm, and the gap between the weld seams during assembly and positioning is large when the plate is thin, so the commonly used CO 2 The welding process of single-side welding and double-side forming welds thin plates. However, this welding method needs to accumulate multiple weld passes in the weld seam in sequence, the welding steps are complicated, and the welding efficiency is low. Equal and uneven, even hot cracks or penetration at the bottom of the weld, resulting in weakened hull structure, high frequency of weld repairs, and high production costs. Contents of the invention [0004] The object of the present...

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Problems solved by technology

[0004] The object of the present invention is to provide a submerged arc welding tool to solve the complicated welding steps and low welding efficiency in the prior art when welding thin plates. During the process, it is necessary to continuously adjust the welding current of the welding head, and there are hidden dangers of thermal cracks or weld penetration at the welding place

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