Assembly method for fillet welded joint at vertical positions of thin plates

A fillet weld and assembly method technology, applied in welding equipment, welding equipment, auxiliary devices, etc., can solve the problems of affecting the welding seam forming, slow welding speed, and large welding line energy, so as to improve the welding seam forming, reduce Deformation of the sheet, the effect of facilitating assembly

Inactive Publication Date: 2020-01-14
GUANGZHOU SHIPYARD INTERNATIONAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the too large pitch of tack welding, during the welding process of the formal fillet weld, the assembled and fixed thin plate will be deformed at the position without tack welding, resulting in a larger assembly gap and affecting the welding quality
And the surface shape of the vertical tack welding seam belongs to the convex tack welding, the tack welding leg size is ≥ 5mm, and the post-weld ≥ 5mm, the formal vertical position fillet weld design theoretical leg size is generally ≤ 5mm, and the tack welding size is larger than the formal The size of the fillet weld is large. When the formal fillet weld covers the tack welding, the shape of the formal fillet weld will be too convex, and the welding molten metal will easily flow, which will affect the shape of the weld.
Furthermore, the welding speed of vertical upward positioning welding is slow, and the welding line energy is large, which is not conducive to the deformation control of thin plates

Method used

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Embodiment Construction

[0019] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0020] This embodiment provides a method for assembling a fillet weld in a vertical position of a thin plate, which includes the following steps:

[0021] S1. Closely attach the long side of the first thin plate to the surface of the second thin plate, place the two thin plates in a T-shaped joint, and use the support structure to fix the two thin plates respectively;

[0022] S2, cleaning the weld...

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Abstract

The invention discloses an assembly method for a fillet welded joint at the vertical positions of thin plates, and belongs to the technical field of metal welding. According to the assembly method forthe fillet welded joint at the vertical positions of the thin plates, the two to-be-welded thin plates are firstly fixed; and the to-be welded positions are welded by adopting a vertical downward locating welding process. The vertical downward locating welding process is adopted, the locating welding length and the locating welding distance are shortened, the vertical downward locating welding length ranges from 15 mm to 20 mm, and the locating welding distance of two adjacent positions ranges from 100 mm to 150 mm; meanwhile, due to the adoption of vertical downward locating welding, the size of a weld leg of locating welding can be effectively controlled to be smaller than or equal to 3 mm, and it is guaranteed that the convexity degree of the welded joint of locating welding is in an inward concave type; the situation that during welding covering and locating welding of the normal filler welded joint, the normal filler welded joint is formed and is too convex at the locating welding position is avoided, welded joint forming of the normal filler welded joint at the locating welding position is improved, and the grinding quantity is effectively reduced; and meanwhile, the weldingspeed and welding efficiency are high, and thin plate deformation caused by locating welding can be reduced.

Description

technical field [0001] The invention relates to the technical field of metal welding, in particular to a method for assembling thin plate vertical fillet welds. Background technique [0002] The existing vertical position fillet welds of thin plates are basically assembled and fixed by vertical upward tack welding. The length of a single tack weld for a fixed weld assembled by this process is 30-50mm, and the distance between two adjacent tack welds is 200-300mm. Due to the excessively large tack welding spacing, during the official fillet weld welding process, the assembled and fixed thin plate will be deformed at the position where there is no tack welding, resulting in a larger assembly gap and affecting the welding quality. And the surface shape of the vertical tack welding seam belongs to the convex tack welding, the tack welding leg size is ≥ 5mm, and the post-weld ≥ 5mm, the formal vertical position fillet weld design theoretical leg size is generally ≤ 5mm, and the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/235B23K9/02B23K37/04
CPCB23K9/02B23K9/16B23K9/235B23K37/04
Inventor 刘亚伟黎剑新刘娇玉
Owner GUANGZHOU SHIPYARD INTERNATIONAL LTD
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