Multi-power-supply parallel multi-wire high-efficiency electric arc welding device and application thereof

Abstract

The invention discloses a multi-power-supply parallel multi-wire high-efficiency electric arc welding device and application thereof. The device comprises a plurality of independent welding power supplies, a plurality of independent wire feeding mechanisms, a multi-wire welding gun which can be densely arranged, and contact tubes, wherein the welding power supplies, the wire feeding mechanisms, the multi-wire welding gun and the contact tubes are sequentially connected. The independent welding power supplies can be constant in voltage or current. Welding wires are driven by the independent wire feeding mechanisms respectively. The contact tubes can be multi-wire integrated contact tubes with bent channels or multiple embedded type contact tubes. The welding wire distribution mode of the multi-wire welding gun which can be densely arranged is determined according to requirements of the welding technology. In the welding process, the welding device is suitable for common welding wires and also suitable for cable welding wires and single welding wire and cable welding wire combinations. According to the device, the welding efficiency can be greatly improved, the welding production efficiency is greatly improved, the welding joint quality is improved, the consumption of welding materials is effectively reduced, and the device is especially suitable for narrow gap welding of thick-wall materials.

Description

technical field [0001] The application belongs to the field of welding technology, and in particular relates to a multi-power parallel multi-wire high-efficiency arc welding device and its application. Background technique [0002] Arc welding is one of the most important metal joining techniques, and about half of the steel is processed by welding to produce the final product. How to improve welding efficiency is an important issue in welding production. It is generally believed that the use of automated welding methods, such as robot welding, can improve welding efficiency relative to manual work, but the actual effect is very limited. This is because the essential issue of welding efficiency is still the filling efficiency of welding wire, just as the main basis for the current welding efficiency assessment is the amount of welding wire consumed per unit time, also known as welding wire deposition rate. The use of multi-wire arc welding is undoubtedly an effective way t...

AI Technical Summary

Problems solved by technology

The current multi-wire arc welding has the following methods: 1. Tandem twin-wire arc welding, using a torch nozzle with two mutually insulated conductive tips, and two welding power sources that are cooperatively controlled, the welding efficiency can reach that of single-wire welding 2. Twin wire arc welding, using a welding torch nozzle with a special conductive tip with two holes, one welding power supply supplies power to two welding wires at the same time, and the welding efficiency can also reach Single-wire welding is about twice as long, but the contact tip is a non-standard product, and it is difficult to process and replace; 3. Similar to Twin, there is also three-wire arc welding, which uses a welding torch nozzle with a special three-hole conductive tip, a The welding power supply supplies power to two welding wires at the same time, and the welding efficiency can be more than twice that of single wire welding, but also, the contact tip is a non-standard product, and it is difficult to process and replace

And the durability of the above-mentioned double-hole or porous contact tip is much worse than the conventional contact tip, so the multi-wire arc welding method associated with this has not been practically applied

Although Tandem twin-wire arc welding has been applied to a certain extent, it cannot be widely promoted due to high cost and high maintenance requirements.

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