Electromagnetic direct-drive high-speed three-wire magnetic-field compound flux copper-gasket submerged arc welding device and method thereof

Abstract

The invention discloses an electromagnetic direct-drive high-speed three-wire magnetic-field compound flux copper-gasket submerged arc welding device and a method thereof. The device comprises a wire feed system, a welding power source, a magnetic field power source, a copper gasket system, a torch system, an electromagnetic compound system and a numerical control system, wherein the wire feed system is formed by integrating the rotor of the electromagnetic direct-drive rotating servomotor and the main wire feed rolls into an integral body; the torch system comprises an eccentric current contact nozzle which is divided into an upper part and a lower part; the electromagnetic compound system is integrated with the nozzle of the torch system and a water cooling system into an integral body; and the copper gasket system is an air-pressure copper-gasket one-side-welding double-side one-step molding system, the back side of which uses flux. The invention can cancel the mechanical transmission link between the traditional motor and the wire feed rolls, greatly enhances the wire feed stability and the control response precision, and eliminates the noise, oil sludge and vibration, thereby realizing the three-wire high-speed electromagnetic compound submerged arc welding one-side-welding double-side molding high-efficiency welding method. The method has the advantages of simple structure, small size, high stability and reliability, and precise numerical control, and can be used for welding huge and thick plates.

Description

technical field [0001] The invention relates to the field of welding, in particular to a new type of electromagnetic direct-drive high-speed three-wire magnetic field compound flux copper liner submerged arc welding equipment and a welding method thereof. Background technique [0002] With the rapid development of my country's economy, in many industrial fields, it is necessary to develop high-speed, high-efficiency and high-quality welding technology to meet the needs of national construction. At the same time, the progress of science and technology in related disciplines has prompted the emergence of new modern welding methods, and the continuous increase in welding speed , welding quality requirements are also increasing, in addition, sustainable development, environmental protection requirements for welding technology are also gradually increasing. [0003] Submerged arc welding technology is currently one of the most important welding technologies used in the welding of ...

AI Technical Summary

Problems solved by technology

[0004] 1) The mechanical properties of welded joints, especially the impact toughness, need to be improved;

[0005] 2) The energy limit of the welding line is strict, which limits the advantages of the multi-wire submerged arc welding technology;

[0006] 3) The welding procedure specification is relatively narrow;

[0007] 4) Double-wire or multi-wire welding is likely to cause coarse metal grains in the weld, and many defects such as pores, segregation, inclusions, and undercuts;

[0008] 5) Welding speed and welding efficiency also need to be improved;

[0009] 6) The environmental protection problems of welding materials, such as flux and welding slag, are prominent;

[0010] 7) Due to the use of worm gear transmission, gear reduction and other mechanisms, the welding torch and welding equipment are bulky and bulky, and the multi-wire welding equipment has a complex structure, which affects the arrangement of multiple welding wires, which is not conducive to use and difficult to operate

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