Method for producing fitted plate girders, preferably steel H girders with variable web thickness and variable width of the outer flanges

摘要

Method of production of reinforced pallet trucks, in particular variable diameter thickness and variable width external belts, intended for large-scale hall and other buildings, characterised by this, that the sheets of the sheet are subjected to an oxygen-cutting process on diameters with both longitudinal edges being cut at the same time and then subjected to a process of grilling the edges, then purification, and the bottom band of the sheet is levelled against the variable thickness medium on it, where the centre of both sides stabilises the fitters to maintain their verticality to the lower belt of the sheets,a lower-belt centre-latch from the front to the start of the welding process, followed by a joint welding process, simultaneously moving the burners towards each other, along the welding line at the speed of moving the welded elements with simultaneous pressure from the top of the variable-thickness centre, the heated component is mechanically adjusted to the lower belt by means of pressure rollers on the upper longitudinal edges of the lower belt with respect to the lower housing of the roller supporting the middle of the lower belt,the assembled component then rotates around 180o and places on the second new lower band the plate and undergoes the welding process according to the specified operations and parameters given under the first lower band, then makes the opening and takes the front, rib and vertebral plates, then conducts the process of spraying and hydrodynamic painting with constant temperature and humidity parameters, then undergoes a process of tunnel drying in the air stream from the top.