Stainless steel I-beam has the advantages of strong bending resistance in all directions, simple construction, cost saving and light structure weight, and has been widely used. Its advantage is that it can destroy the casting structure of the stainless steel I-beam, refine the grain of the steel, and eliminate the defects of the microstructure, so that the structure of the stainless steel I-beam is dense and the mechanical properties are improved. This improvement is mainly reflected in the rolling direction, so that the stainless steel I-beam is no longer isotropic to a certain extent.
However, after hot rolling, the non-metallic inclusions inside the stainless steel I-beam are pressed into thin sheets, and delamination occurs, which will reduce the performance of the stainless steel I-beam under tension in the thickness direction. Residual stresses caused by uneven cooling may also have adverse effects on deformation, stability, fatigue resistance, etc.
The stainless steel I-beam processing procedure is divided into the following parts
1. The main point is to cut the stainless steel plate into strips and shear the plate;
2. The stainless steel I-beam is divided into strips and straightened. When the shearing machine cuts the plate, it should be reserved according to the thickness of the board and the size of the I-beam;
3. Straightening of stainless steel flat strips generally requires machine straightening;
4. For the welding of stainless steel I-beam, the stainless steel I-beam welded by machine submerged arc welding has a large amount of deformation during production and processing, and the speed of the welding wire of the stainless steel welding machine has a direct relationship with the weld seam;
5. For the straightening of stainless steel I-beams, large-tonnage pressure machines are used to adjust the straightness and curvature of stainless steel I-beams;
6. Sandblasting, polishing and packaging of stainless steel I-beams.
