back chipping-free and full penetration (I level component) robot welding technology of medium plate K-shaped groove

Abstract

The invention belongs to the technical field of steel structure welding, and discloses a back chipping-free and full penetration robot welding technology of a medium plate (t>=30 mm) K-shaped groove.The robot welding technology comprises the steps that plates are prepared, the plates are cut so as to form a technology groove, splicing welding is conducted on the plates, a lead-in arc plate and alead-out arc plate are additionally installed, and full-length welding is conducted on an additionally installed rib plate. Welding is conducted on the two medium plates by applying the robot weldingtechnology, then the lead-in arc plate and the lead-out arc plate are dismounted, and ultrasonic checking is conducted on a welding seam of a spliced plate. In the welding process of the medium plates, it is ensured that the quality level of the welding seam can reach the requirement of a full penetration welding I level, welding deformation is small, back chipping treatment does not need to be conducted on a welding pass, welding materials are saved, the production cost is reduced, a large number of human resources can be saved by adopting robot automation welding, the manual labor intensityis relieved, meanwhile, the production efficiency is high, and the construction requirements for being advanced in technology, and capable of saving energy and reducing consumption are met.

Description

technical field [0001] The invention belongs to the technical field of steel structure welding, and in particular relates to a robot welding process for full penetration of K-shaped grooves of medium-thick plates without root cleaning. Background technique [0002] The medium and thick plate structure has been widely used in the fields of building steel structure, wind power generation, coal machinery, ship shell, etc. The welding of the medium and thick plate K-groove is an important part of the steel structure production, which directly affects the product quality and Productivity. [0003] In the existing technology, when welding the K-shaped groove of the medium and thick plate, the welding primer is firstly performed on one side, after the welding is completed, it is turned over, and the carbon arc gouging is carried out in the groove on the other side, and then the root is polished. , followed by rooting, filling and cap welding operations. Turn over after completion...

AI Technical Summary

Problems solved by technology

[0004] When welding the K-shaped groove of the medium-thick plate in the above-mentioned prior art scheme, it is necessary to carry out carbon arc gouging in the groove of the medium-thick plate. A higher amount will affect the mechanical properties of the weld

At the same time, the manual operation is difficult, the production efficiency is low, the consumption of auxiliary materials is high, the cost is high, and the working environment is poor, so it is necessary to improve

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