Process for molding I-steel main welding seam non-back chipping full-penetration I-level component

Abstract

The invention discloses a process for molding an I-steel main welding seam non-back chipping full-penetration I-level component and relates to a molding process of light thin-walled I-steel. The process comprises the following steps of preparing a plate, testing welding processing property on the plate, blanking and cutting a flange plate to form a technical beveled edge, cutting or shearing and leveling a technical triangular stiffening plate, positioning and performing full-length welding (single side and singe surface) on the technical triangular stiffening plate, performing submerged-arc door welding on the I-steel, performing ultrasonic (UT) flaw inspection on a main welding seam of an I-steel web, transferring the qualified I-steel component after inspection to the next procedure. When the I-steel is welded, the quality grade of the welding seam can be guaranteed to meet the requirement of full-penetration welding I grade, the deformation of the I-steel is small, back chipping on the opposite surface of a weld bead is not required, backing, filling and surface covering operations which are sequentially performed on the opposite surface of the weld bead are not required, the production cost is relatively low, the production efficiency is relatively high, and the requirements of advanced technology, energy conservation and environment friendliness on construction are met.

Description

technical field [0001] The invention relates to a forming process of light-weight thin-walled I-steel, in particular to a forming process of a fully-penetrated I-level member with unclear root of the main weld seam of the I-steel. Background technique [0002] Light-weight thin-walled I-beam components are widely used in building steel structures. The above-mentioned components are also commonly used in industrial plant trusses, crane beam load-bearing, steel column load-bearing, mechanical load-bearing platforms and other fields. [0003] At present, light-weight thin-walled I-steel components are mainly produced by welding. In the existing technology, when making light-weight thin-walled I-steel components whose main welds are full penetration I-level welds, the thickness is usually 6-8mm. The steel plate is used as the web of the I-beam, and a unilateral V-shaped process groove is provided at both ends of the web, and then the web with the V-shaped process groove and the ...

AI Technical Summary

Problems solved by technology

[0005] When the above-mentioned existing technical solutions are used to manufacture light-weight thin-walled I-beam members, not only the reverse side of the weld bead between the flange plate and the web needs to be cleaned, primed, filled, and covered sequentially, but the operation is relatively complicated. It takes a long time, the cost is high, and the labor intensity of the workers is high, the production efficiency is low, the plate deformation is not easy to control, and the product qualification rate is not high, so it is necessary to improve

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