What should be paid attention to in steel structure?
Today we will talk about the points that should be paid attention to in steel structures.
1. Cutting and blanking
When cutting and blanking, the size of the flange plate is different, resulting in the inconsistency of the size of the H-shaped steel and the corbel, and the upper and lower flange plates of the steel beam connected with the corbel are misaligned by about one plate thickness; there are deep cut marks on the cutting edge, There are obvious depressions on the edge of the board, or there are deep sawtooth marks, the cutting roughness exceeds the standard, the edge of the panel is not vertically cut, and the splicing of the wrong side exceeds the standard.
2. Assembly
During assembly, the H-steel is welded without a tire frame, resulting in a deviation in the height and dimension of the H-shaped steel, and the web is off-center; uncorrected.
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3. Welding
In terms of welding, light steel welded H-shaped steel wing plates are cut and then spliced. The welds are not equipped with arc extinguishing plates, resulting in incomplete welds, pits on the edges that are not fused, etc., and are not flush with the base metal; column feet, The size of the weld leg of the corbel is smaller than the design drawings, and the fillet weld is seriously sagging, and the arc closing point is generally lower than the base metal, and there are many pores; the weld seam formed by CO₂ welding is poor, the width is inconsistent, the height is inconsistent, and it is suddenly large Suddenly small; the manual welding seam is not straight, the width is different, and the undercut phenomenon is serious; the welding slag splash is not cleaned.