How do I weld 3 steel plates into I-beam?
The specific process in accordance with the above method to compile the process, select the electrode, usually use manual electric arc welding, welding and assembly can be used after the whole assembly welding, high efficiency to do so, but when welding workpiece rigidity, easy to crack, but also can be used two times forming and welding approach, namely the first floor and the middle the vertical plate welding, welding significantly less rigidity, such as bending deformation after welding is obvious, timely correction, and then welding another piece of plate (for welding to create good working conditions, semi-finished products will have a good welding reverse welding).
Welded I-beam is generally used to take the load of the beam, most of the plate using low alloy high strength steel. The welding process is to prevent the occurrence of cracks, and the bending deformation of the welded I-beam is sure to happen.
Thicker board, welding process should pay attention to preheat before welding, welding cold, welding on both sides of the weld must be done before cleaning. If the beam is longer, more than one welder can be arranged at the same time.
