A deformation control method in the segmental fabrication of aluminum alloy hull

Abstract

The invention relates to a deformation control method in the manufacture of aluminum alloy hull segments. In the three specific steps of hull segment assembly, welding and hoisting, the order of assembly is reasonably arranged, and the described The aggregates are fixed on the aluminum alloy plates, and the aluminum alloy plates are not welded but a gap of a certain width is left, so as to leave a shrinkage margin in the subsequent welding steps, which can effectively avoid deformation; at the same time In the assembly of the aggregates, 1-2 aggregates are reserved to be assembled and welded after the welding step is completed, which can effectively suppress the deformation of the aluminum alloy plate during the welding process; in addition, it is also reasonable to arrange the The welding sequence in the welding step is to make full use of the horizontal and longitudinal span distribution of the hull segments through the welding sequence of longitudinal and then transverse and the method of skip welding of hull segments, effectively avoiding the generation of deformation and a large number of corrections operation, effectively improving the engineering efficiency and shortening the construction period.

Description

technical field [0001] The invention relates to the field of ship component installation and welding technology, in particular to a deformation control method in the segmental fabrication of an aluminum alloy hull. Background technique [0002] Aluminum alloy sheets are widely used on cruise ships, and because of their light weight, they will also be used on the bridge of some ships, especially in the construction of large-area hull segments for new cruise superstructures. 3-6mm aluminum alloy sheets are more and more widely used in the living quarters and bridges of ships, especially cruise passenger ships use a large number of aluminum alloy sheets as the main structure of the superstructure. [0003] Due to the small thickness of the thin plate, it is prone to deformation during welding, mainly wave deformation and twisting deformation, which makes it very difficult to correct the deformation of the thin plate. For aluminum alloy sheets, due to the large expansion coeffi...

AI Technical Summary

Problems solved by technology

In the prior art, it is usually necessary to rectify after deformation. The basic rectification method includes thermal rectification. First, the deformed plate is heated locally with flame, and then cooled with water, so that stress is generated during the cold shrinkage process, so as to achieve the effect of rectifying the deformation. For the aluminum alloy plate, due to its fast heat conduction and small shrinkage, it is difficult to correct the deformation of the aluminum alloy plate

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