Welding forming method of light steel structure

Abstract

The invention discloses a welding forming method for a light section steel structure. The method comprises the steps that a first wing plate to be welded and a second wing plate to be welded are respectively perpendicular to a web plate; one end edge of the first wing plate and one end edge of the second wing plate are welded to the two sides of the plate face of the first end on the web plate respectively, a first welding seam and a second welding seam are formed, and after welding forming, the plate face of the first wing plate is flush with the plate face of the second wing plate. According to the welding forming method for the light section steel structure, a light and thin T section steel or H section steel structure with the thickness of a welding plate smaller than three millimeters can be welded, welding quality is good, and the welding forming method can be widely applied to welding of light building structures of movable houses, greenhouses and the like in the construction industry and welding of light section steel structures used in other industries.

Description

technical field [0001] The invention relates to light steel structure technology, in particular to a welding forming method of light steel structure. Background technique [0002] The light steel structure has the advantages of fast installation speed and steel saving, and is widely used in light building structures such as houses. [0003] figure 1 For the existing light T-shaped steel structure, figure 2 For existing light H-shaped steel structures, such as figure 1 with figure 2 As shown, the T-shaped steel is welded by one web 200 and one wing 100 , and the H-shaped steel is welded by one web 200 and two wing 100 . When welding two plates into a T-shaped steel or welding three plates into an H-shaped steel, high-frequency welding is generally used, that is, the two electrodes for high-frequency welding are placed on the web 200 and a wing plate 100 respectively, and the induced currents are respectively Flow through the web and the wing to form a current loop, and...

AI Technical Summary

Problems solved by technology

[0004] In the welding forming process of the above-mentioned T-shaped steel or H-shaped steel structure, due to the influence of the induced current skin effect and the proximity effect, the welding current tends to concentrate on the edge of the conductor. Therefore, the current at the edge of the weld on the web is greater than that on the center line of the flange Therefore, the temperature at the welding point on the side of the web at the welding position is much higher than the temperature at the welding point on the center line of the wing plate, and the smaller the thickness of the plate, the greater the temperature difference between the two. Therefore, this welding forming The H-shaped steel or T-shaped steel structure formed by this method is not only difficult to obtain a good-quality welded seam, but also when the plate thickness is less than 3 mm, the above-mentioned light-weight T-shaped steel or H-shaped steel structure is difficult to form by welding

Images