Steel plate and steel plate bushing fine and thick welding wire double-surface welding method

The invention provides a steel plate and steel plate bushing fine and thick welding wire double-surface welding method. The method comprises the following steps: steel plates are paired on steel platebushings; welding gaps are formed according to welding wires; the spot welding is performed on guide protection plates and correction protection plates at two ends of the steel plates; the steel plate bushings are bonded on the back surfaces of welding beads; fluxes are uniformly filled in butt joint gaps before welding; the quantity of the fluxes is 3/4 of the quantity of welding line base metals; the tail ends of the welding wires are inserted in the middle positions of the welding line base metals; in front surface welding, first and third welded layers both adopt the welding wires with diameters of 2.5 mm; and in reverse surface welding, the first welded layer adopts the welding wires with diameters of 2.5 mm, and the third welded layer adopts the welding wires with diameters of 2.5 mm or 4 mm. The method can