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Double-wire double-sided single-pass submerged-arc welding method for moderate thickness plates

A submerged arc welding, double-sided technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of high welding heat input, low efficiency, complex welding process, etc., achieve large penetration, save time, process simple effect

Inactive Publication Date: 2018-03-20
张盘 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a high-efficiency double-electrode submerged arc welding method for medium and thick plates to solve the problem of low efficiency of traditional welding methods, and to solve the problem of complicated pre-weld treatment and welding procedures in existing high-efficiency welding methods, and excessive welding heat input. High, and the problem of conventional double-sided welding that needs to be rooted, the process is simple (directly assembled and welded, no need for rooting, rooting, and grinding), welding is efficient (front and back are welded once), and the environment is friendly (no rooting noise and smoke) pollution)

Method used

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  • Double-wire double-sided single-pass submerged-arc welding method for moderate thickness plates
  • Double-wire double-sided single-pass submerged-arc welding method for moderate thickness plates
  • Double-wire double-sided single-pass submerged-arc welding method for moderate thickness plates

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The base material for welding is a 20mm thick steel plate, and the groove is processed and assembled according to the parameters in Table 1. Two electrodes are connected in series to form a welding electrode group.

[0062] Table 1 Welding plate groove and assembly parameters

[0063]

[0064] Table 2 Parameters of series electrode group

[0065]

[0066] Table 3 Welding process parameters of 20mm thick steel plate

[0067]

Embodiment 2

[0069] The welding base material is a 35mm thick steel plate, and the groove is processed and assembled according to the parameters in Table 4. Three electrodes are connected in series to form a welding electrode group.

[0070] Table 4 Welding plate groove and assembly parameters

[0071]

[0072] Table 5 Parameters of series electrode group

[0073]

[0074] Table 6 35mm thick steel plate welding process parameters

[0075]

Embodiment 3

[0077] The base material for welding is a 50mm thick steel plate, and the groove is processed and assembled according to the parameters in Table 7. Three electrodes are connected in series to form a welding electrode group. The assembly parameters are according to Table 8, and the welding parameters for steel plate welding are set according to Table 9.

[0078] Table 7 Welding plate groove and assembly parameters

[0079]

[0080] Table 8 Parameters of series electrode group

[0081]

[0082] Table 9 50mm thick steel plate welding process parameters

[0083]

[0084] The above welded plates have been tested by X-ray and ultrasonic, and no welding defects have been found, and the welding process can meet the welding requirements of thick plates.

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Abstract

The invention relates to a double-wire double-sided single-pass submerged-arc welding method for moderate thickness plates. By adjusting and optimizing the inclination angle of double wires, the mutual position relation and welding parameters between the double wires as well as the groove dimensions and splicing of the steel plates, double-wire submerged-arc double-sided single-pass welding of themoderate thickness plates can be achieved, no bottoming is required before welding, no back gouging is needed on the back face, chamfering is easy and convenient, production efficiency is improved and the welding environment is good.

Description

technical field [0001] The invention belongs to the field of high-efficiency welding of ships, and in particular relates to a double-sided single-pass submerged arc welding method for thick plates in the horizontal segmented assembly process in the ship building process. Background technique [0002] Due to the heavy-duty and large-scale development trend of shipbuilding, ocean engineering, and pressure vessel equipment, the application of medium and thick plates to welding has become more and more common, which has caused a substantial increase in welding workload. With the increase of labor costs, the requirements for welding production efficiency are getting higher and higher. High-efficiency welding technology has become one of the key technologies of modern manufacturing industry. [0003] At present, there are mainly the following types of welding for medium and thick plates: [0004] ①Single-wire submerged arc welding is aimed at single-wire submerged arc welding of ...

Claims

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Application Information

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IPC IPC(8): B23K9/18B23K9/235B23K9/095
CPCB23K9/188B23K9/095B23K9/235
Inventor 王银柏
Owner 张盘
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