Automatic high temperature chloride corrosion resisting layer surfacing device of irregular surface and surfacing method

Abstract

The invention relates to an automatic high temperature chloride corrosion resisting layer surfacing device of an irregular surface and a surfacing method. The surfacing device comprises a stander, wherein the stander is provided with a position finding device, at least one positioning band electrode surfacing head component and a workpiece seat, wherein the positioning band electrode surfacing head component comprises a positioning band electrode surfacing head and a position adjusting device for adjusting the position of the positioning band electrode surfacing head, the position adjusting device comprises a longitudinal telescopic arm, a transverse telescopic arm and a direction regulation arm, the longitudinal telescopic arm is connected with the transverse telescopic arm, and one end of the direction regulation arm is hinged with one end of the longitudinal telescopic arm or one end of the transverse telescopic arm. By adopting the automatic high temperature chloride corrosion resisting layer surfacing device, the irregular surface can be automatically and mechanically welded, the distance and angle between the surface of the workpiece and the positioning band electrode surfacing head can be adjusted in multiple angles and multiple ways, the distance between the positioning band surfacing head and the surface of the workpiece is maintained constant, the yield of the product is high, and the consistency is good; moreover, simplicity in operation can be realized, the labor intensity of workers can be alleviated, and the product quality and the production efficiency can be greatly improved.

Description

technical field [0001] The invention relates to a surfacing welding device and method, in particular to an automatic surfacing welding device and a surfacing welding method for a high-temperature chlorine-resistant corrosion layer aimed at the irregular surface of the heating surface of a waste incineration power plant boiler. Background technique [0002] There are many corrosive gases in the working environment of the water wall, superheater and other heating surfaces of boilers in waste incineration power plants. Under the action of corrosive gases and molten salts, high-temperature chlorine corrosion will occur on the surface of metal workpieces, resulting in thinning of the metal pipe wall. The compressive strength decreases, which in turn leads to accidents such as pipe bursts. The more advanced method is to clad corrosion-resistant nickel-based alloy materials (such as Inconel625, etc.) on the easily corroded heating surface, and the more mature method is to use surfa...

AI Technical Summary

Problems solved by technology

[0003] 1. The water-cooled wall only needs to be surfacing on the heated side, and the connected fins also need to be surfacing, so a single surfacing cannot be performed before the water-cooled wall tube is welded and assembled;

[0004] 2. The surface is a combination of arc surface and plane. At present, there is no surfacing welding machine that can automatically surfacing such irregular surfaces. Only manual surfacing can be used, resulting in high labor intensity;

[0005] 3. The quality of manual surfacing depends too much on the welder's technology, which cannot guarantee the stability of quality, and the cladding layer is prone to defects;

[0006] 4. The distance between the surfacing head and the workpiece determines the quality of the surfacing finished product. It is difficult to keep the distance between the surfacing head and the workpiece consistent for the surfacing of irregular products, especially for products with curved surfaces, and the positioning belt The angle between the surfacing welding head and the arc surface of the workpiece to be processed must be in the range of 90°±10°, otherwise the surface of the finished product will be uneven and poor in consistency, but it is difficult to achieve with the existing technology

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