Welding process for double-side formation with one-side welding

Abstract

The invention discloses a welding process for double-side formation with one-side welding. The welding process comprises the steps of a, workpiece surface cleaning; b, welding material selecting and welding process parameter setting; c, welding wire drying, wherein, a welding wire is dried, and the welding wire is kept clean and smooth; d, copper base plate installation, wherein, a submerged arc welding machine is adopted for welding, and a copper base plate is installed on the submerged arc welding machine; e, workpiece placing, wherein, the workpiece is horizontally placed on the lower sideof the submerged arc welding machine, and the center of the longitudinal welding seam of the workpiece is enabled to be kept consistent with the center of the copper base plate; f, run-on plate and run-off plate placing, wherein, a run-on plate and a run-off plate are correspondingly placed on the two ends of the longitudinal welding seam of the workpiece; and g, positioned welding, wherein, fullweld is carried out on the two ends of a workpiece, wherein the length of the workpiece is 100mm, spot welding is carried out, the length is 100mm, spot welding is carried out every 200mm-300 mm, andthe length of spot welding is 30mm-50mm. The welding process has the advantages that a bevelling step is omitted, time and labor are saved, the welding efficiency is improved, and the welding qualityis improved.

Description

technical field [0001] The invention belongs to the field of welding, and in particular relates to a welding process for single-side welding and double-side forming. Background technique [0002] In the welding process, double-sided forming welding is often required. In order to achieve the effect of double-sided forming, double-wire welding equipment is usually required, but most of the double-wire welding requires workpieces to be turned over for welding, which greatly reduces work efficiency. At the same time, some workpieces are inappropriate. For the turning operation, manual CO2 backing semi-automatic submerged arc welding filling and cover welding technology is mostly used now, which is inefficient, and the welding quality largely depends on the welder's operation, and the welding quality is difficult to guarantee. Therefore, single-sided welding and double-sided forming Welding technology has been paid more and more attention by people. [0003] Patent CN 105345222 ...

AI Technical Summary

Problems solved by technology

In order to ensure that the arc can go deep into the root of the joint and make the root of the joint penetrate, the current welding process of single-sided welding and double-sided forming must carry out the process step of opening the bevel, and the design or selection of the bevel weld must pay attention to welding Accessibility, parameters such as bevel angle, root clearance, obtuse angle and root radius must be considered. After the beveling is completed, in order to improve the welding quality, the bevel needs to be cleaned. A beveling process requires more time. Manpower and material resources, if a large number of single-sided welding and double-sided forming welding is performed, each workpiece needs to be grooved, which greatly reduces the welding efficiency. At the same time, double-sided forming welding has extremely high requirements for current and voltage. It is extremely easy to reduce the welding quality, the uniformity of the welding surface is low, and pores, welding spots, slag inclusions, etc. appear on the surface