Welding method of CO2 gas shielded welding for solid welding wire with diameter of phi 1.6

Abstract

The invention relates to a welding method of CO2 gas shielded welding for a solid welding wire with the diameter of phi 1.6. The welding method comprises the step of welding a workpiece by a way of vertical position welding or horizontal position welding, wherein the welding process sequentially comprises the steps of welding a base layer, welding a filler layer and welding a cover surface layer, and the thickness of the welded workpiece is not less than 30mm; when the workpiece is welded in the way of vertical position welding, the welding current is 150-180A, and the arc voltage is 20-24V when the base layer is welded; the welding current is 160-240A, and the arc voltage is 20-28V when the filler layer is welded; the welding current is 150-200A, and the arc voltage is 20-26V when the cover surface layer is welded; when the workpiece is welded in the way of horizontal position welding, the welding current is 180-220A, and the arc voltage is 23-26V when the base layer is welded; the welding current is 230-280A, and the arc voltage is 24-28V when the filler layer is welded; the welding current is 160-200A, and the arc voltage is 20-26V when the cover surface layer is welded.

Description

technical field [0001] The present invention relates to the field of welding, in particular to a Φ1.6 solid core welding wire CO 2 Welding method of gas shielded welding. Background technique [0002] In recent years, gas shielded welding has developed rapidly in my country, and semi-automatic gas shielded welding technology is mostly used in on-site production and installation. However, the current CO 2 Gas shielded welding mainly uses Φ1.0-Φ1.2 welding wire, Φ1.0 solid core welding wire CO 2 The welding parameters during gas shielded welding are: welding current is 110A-140A, arc voltage is 18V-20V, Φ1.2 solid core wire CO 2 The welding parameters of gas shielded welding are: welding current is 120A-160A, arc voltage is 21V-24V. However, with the continuous development of the scale of engineering construction, more and more thick structural parts are produced and applied. When using the existing Φ1.0-Φ1.2 welding wire to weld thick structural parts, due to the larger d...

AI Technical Summary

Problems solved by technology

With the continuous research and development of welding material manufacturers, large-diameter welding wires can be produced, which is represented by Φ1.6. Due to the increase in the diameter of the welding wire used, the welding efficiency can be rapidly improved in theory. However, due to the increase in the diameter of the welding wire, the original welding The parameters can no longer be adapted, so that the welding quality cannot be guaranteed, and the operation is more difficult. Therefore, it has not been widely promoted and applied.

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