Double-sided multi-electrode penetrable electric arc welding method

Abstract

The invention relates to a double-sided multi-electrode penetrated electric arc welding method, which uses three welding guns to weld a workpiece. The welding guns can be assembled randomly and are distributed on two sides of the workpiece to form penetrable electric arcs on the workpiece for welding. A plurality of the welding guns are burnt at the same time to generate the electric arcs and forma controllable triangular electric arc. The heat input is changed by adjusting the current on the workpiece in real time. By changing the space lengths and the included angles of the welding guns, the form of a heat source and the force input to a weld crater can be changed so as to satisfy various welding requirements. The welding method can achieve any combination of heat transfer, force transfer and mass transfer in the process of welding, and the shape of the electric arc can also be controlled randomly. In the process of welding, the penetrable electric arcs can achieve high-speed welding of a thin plate and one-step perforation complete penetration welding of a thick plate. The welding method can perform high-efficiency and high-quality welding by using the prior welding device under the condition with a special welding power supply. Simultaneously, the method can be simplified as double-sided dual-arc welding.

Description

technical field [0001] The invention relates to a double-sided welding method, in particular to a double-sided multi-electrode welding method with a penetrating electric arc, belonging to the field of welding methods. Background technique [0002] In the process of modern manufacturing and industrial production, welding technology has become an important material processing technology. Among various forms of metal joining, arc welding is widely used to produce various high-quality joints. This is because arc welding has proven to be the most economical way to join metals in many applications. The development of various fields also puts forward higher new requirements for the welding process, especially the application of some high-performance, large structures and new structural materials, which makes the traditional welding process powerless. With the continuous development of science and technology, welding technology is also constantly introducing new ones. [0003] Wi...

AI Technical Summary

Problems solved by technology

[0016] This process needs to be welded on the front and back of the workpiece at the same time, which has great limitations in practical application; because the backing plate cannot be added on the back, it is sensitive to the groove gap and workpiece deformation

Therefore, it cannot be applied to thin plate welding, but can only be used for direct butt welding of medium thickness plates

At the same time, because the two welding torches are connected in series, the welding parameters can only be adjusted at the same time

Images