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Horizontal position welding method

A welding method and horizontal welding technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of poor fusion between the weld seam and the upper plate, difficulty in ensuring the quality of the weld seam, and narrow application range

Inactive Publication Date: 2010-07-07
GUANGZHOU SHIPYARD INTERNATIONAL LTD
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Problems solved by technology

Although it realizes automatic welding, its scope of application is narrow, and the gap between plates is usually only applicable within a very small range of about 4mm. For welds with larger gaps, the molten pool will fall under the influence of gravity, and its welding Poor fusion between the seam and the upper plate, and the quality of the weld is difficult to guarantee

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Embodiment Construction

[0015] Such as figure 1 , figure 2 , the two plates are welded butt jointed horizontally. When welding, connect the upper and lower plates, check the assembly gap between the upper and lower plates, and make the assembly gap between the upper and lower plates meet the accuracy requirements; set a gasket on the back of the joint , and fix the liner; when the gap between the upper and lower plates is 4-7mm, use a single-wire automatic horizontal welding trolley for bottom welding, and swing the welding wire up and down while welding, and the swing range of the welding wire is 4-7mm; use two The welding wires arranged side by side with a certain horizontal distance perform double-wire welding on the welding seam to fill the entire welding seam fully.

[0016] For the case where the gap between the upper and lower plates is greater than 7mm, semi-automatic CO2 shielded welding can be used to perform one or more back welding on the side of the lower plate at the gap until the gap...

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Abstract

The invention discloses a horizontal position welding method, which butts an upper plate and a lower plate. The back of the butted position of the plates is provided with and fixed with a pad, under the condition of a small gap, a monofilament automatic horizontal position welding trolley which swings welding sticks up and down is directly used for back welding; under the condition of a large gap, firstly, semi-automatic CO2 shielded welding or the monofilament automatic horizontal position welding trolley is adopted to carry out back welding on one or more channels on the side of the lower plate at the gap position under the condition of not swinging the welding sticks, when the gap turns smaller, then monofilament automatic horizontal position welding trolley swinging the welding sticks up and down is used for back wielding of the remained gap, finally the whole welding line is filled fully by diplonema automatic welding. The invention widens the suitable range of the back wielding mode using the automatic horizontal position welding trolley, and improves the efficiency and the wielding quality of the horizontal position welding.

Description

Technical field: [0001] The invention relates to a method for welding a transverse position welding seam. Background technique: [0002] In the process of shipbuilding, the automation of horizontal welding has always been a difficult problem to solve. Generally, there are three main horizontal welding methods used by shipyards. First, double-sided semi-automatic CO2 shielded welding is adopted. The front side is welded first, and then the back side is welded after the front side is welded. Its welding procedure is many, operation is complicated, and efficiency is low. And there must be one side in the cabin in the front and back, and it is necessary to operate and weld in the narrow space of the cabin, which is very inconvenient to operate. Second, the ceramic liner is pasted on the back, and semi-automatic CO2 shielded welding is used for single-sided bottom welding, and then the entire weld seam is filled with multi-layer and multi-pass welding. Due to the ceramic line...

Claims

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Application Information

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IPC IPC(8): B23K9/16
Inventor 刘云鹏赵在璋马金军赵亚东谭海军
Owner GUANGZHOU SHIPYARD INTERNATIONAL LTD
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