Welding machine with adjustable electric arc energy density

Abstract

The invention relates to a welding machine with adjustable electric arc energy density, and the welding machine comprises a welding main machine, a gas supply system, a cooling water circulating system and a welding gun, wherein the welding gun comprises an upper insulating outer sleeve, a middle insulating outer sleeve, a lower insulating outer sleeve, a driving source, a tungsten rod regulating device, a cooling water clamping sleeve, a tungsten rod clamping sleeve, a tungsten rod, an electric arc nozzle, a protective gas nozzle, an operating handle and a control circuit; the tungsten rod regulating device comprises a rotating nut which is driven by the driving source and is limited by a limiting device; the cooling water clamping sleeve is formed by the way that an inner tube, a middle tube and an outer tube are brazed into a whole, the lower end of the inner tube is provided with a tapered bore and an internal thread which are matched with the electric arc nozzle, and a cooling water tank is formed on the outer side wall of the inner tube; the tungsten rod clamping sleeve is composed of the outer tube, the inner tube and a mandril, the outer tube is provided with the internal thread corresponding to the external thread of the rotating nut, especially an elongated slot which vertically extends for a certain length and a gas tank spirally surrounding the outer tube are arranged at one side close to the upper end of the outer tube, and the lower end of the elongated slot is communicated with the spiral gas tank to form a compression gas tank. The welding machine with adjustable electric arc energy density provided by the invention has the advantages of simple structure and convenience in operation.

Description

technical field [0001] The invention relates to an electric welding machine, in particular to an inverter type argon arc electric welding machine which can adjust arc energy. Background technique [0002] For a long time, the traditional free arc welding technology has not been fundamentally improved. This kind of free arc is umbrella-shaped and divergent. The heating area is scattered, the penetration is limited, and the penetration depth of the welded workpiece is relatively shallow. At the same time, the free arc has the disadvantages of not being stable enough and easy to drift, and the welding of some workpieces is prone to processing defects. In order to make up for these deficiencies, people have developed plasma arc welding technology. The plasma arc is contracted, shaped like a thin cylinder, and has the advantages of good stability, strong penetration, and a highly concentrated heating area. However, the structure of the plasma welding machine is more complicated,...

AI Technical Summary

Problems solved by technology

However, the arc regulating device in this welding equipment, that is, the regulating mechanism of the tungsten rod, still has problems such as the structure is too complicated, the cooling water circulation is not sufficient, and the gas film protection is uneven.

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