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Method for welding thin steel plate

A welding method and technology for thin steel plates, which are used in welding equipment, arc welding equipment, manufacturing tools, etc., to achieve the effects of good thin plate welding quality, short production cycle, and prevention of deformation.

Inactive Publication Date: 2010-06-23
浙江东海岸船业有限公司
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Problems solved by technology

In order to solve this problem, various shipyards are constantly exploring, but so far there is no set of effective and complete measures

Method used

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Embodiment Construction

[0028] Below in conjunction with embodiment the present invention is described in further detail.

[0029] The welding method of the thin steel plate of the present embodiment comprises the following steps:

[0030] 1. Preparation before welding:

[0031] 1. The board should be leveled before assembly to make the board surface smooth;

[0032] 2. Profiles should be leveled before assembly;

[0033] 3. Edge cutting is processed by edge planer or plasma cutting to ensure uniform assembly gap;

[0034] 4. During arc welding, the assembly gap should be less than 0.5mm; the wrong side of the board edge e<0.15t, if the local gap is uneven and out of tolerance, grinding or shoveling should be used to make it smooth, and oxygen-acetylene cutting should not be used Make it deformed; where t≤8mm;

[0035] 2. Positioning welding:

[0036] 1. Before welding, oil, water and rust debris should be thoroughly removed within the 30mm range on both sides of the butt weld and within the gro...

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Abstract

The invention discloses a method for welding a thin steel plate. The method is characterized by comprising the following steps: preparing before welding, namely flattening the plate before assembly to flatten the surface of the plate; flattening a profile before assembly; and machining edge-board blanking by adopting an edge planer or cutting the blanking by plasma to ensure uniform assembly clearance. During arc welding of the jointed plate, the assembly clearance is less than 0.5 millimeters; the misalignment edge e of the plate edge is less than 0.15t, and the nonuniform or out-of-tolerance local clearance is polished or cut to be smooth without deformation due to the adoption of oxy-acetylene cutting, wherein the t is less than or equal to 8 millimeters; the three parts of positioned welding and welding are reasonably designed, so the welding of the thin steel plate has a complete system; therefore, the method can effectively prevent the thin steel plate of a ship deck from deforming during welding, and achieves the targets of short production period and good thin plate welding quality.

Description

technical field [0001] The invention relates to a method of welding thin steel plates in ship decks. Background technique [0002] The welding deformation control technology of thin plates is one of the technical problems in the field of welding. The welding deformation is related to factors such as materials, welding processes, and welding methods. The diversity of welding deformation and the multi-factor interaction of welding deformation lead to the complexity and mutual restriction of welding deformation control technology. How to prevent and control sheet welding deformation is a worldwide problem. In order to solve this problem, various shipyards are constantly exploring, but so far there is no set of effective and complete measures Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a thin steel plate welding method which can effectively and completely prevent the welding deformation of the thin plate accord...

Claims

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Application Information

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IPC IPC(8): B23K9/02B23K9/007B23K9/16B23K9/18B23K9/095B23K9/235B23K9/23
Inventor 吴小明祝波
Owner 浙江东海岸船业有限公司
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