Assembly method of super-thick plates on double-layer bottom block

Abstract

The invention discloses an assembly method of super-thick plates on a double-layer bottom block. The assembly method comprises the following steps that step 1, K-shaped grooves are formed in the upperends of the super-thick plates, the outer groove angle of each K-shaped groove is 45 degrees, and the inner groove angle of each K-shaped groove is 30 degrees; step 2, six clamp plates are verticallyarranged on the outer surface of each super-thick plate at intervals in the longitudinal direction; the inner end face of each clamp plate and the outer surface of the corresponding super-thick plateare fixed in a spot welding mode, and the top surface of each clamp plate is flush with the top surface of the corresponding super-thick plate; step 3, the super-thick plates with the clamp plates mounted are positioned on an inner bottom plate firstly, and then top welding areas of the super-thick plates are subjected to back burning before welding; step 4, weld joints between the super-thick plates and the inner bottom plate are welded in a full penetration welding mode; step 5, welding areas between the inner bottom plate and the super-thick plates are subjected to back burning after welding; and step 6, the clamp plates are dismantled. According to the assembly method, deformation of the inner bottom plate due to welding of the super-thick plates and the inner bottom plate can be greatly improved, and the subsequent mechanical repair amount and the heat fairing amount are decreased.

Description

technical field [0001] The invention relates to an assembly method of an ultra-thick plate on a double bottom section. Background technique [0002] At present, ships above 10,000 tons mainly adopt the form of double bottom. Stress of the double bottom segment: it bears the loads of longitudinal bending, water pressure, cargo, machinery, etc., and the reaction force of the pier during docking, and the possible friction with the riverbed when it is grounded or sailing in shallow water channels. The main purpose of ships adopting double bottom structure is to increase the overall longitudinal strength of the sections, and then improve the stability of the hull. The 400,000-ton ore carrier is by far the largest tonnage carrier in the world, and its construction is quite difficult. How to improve the production environment of the enterprise, improve work efficiency, and shorten the construction period under the implementation of the PSPC specification is a key issue that needs ...

AI Technical Summary

Problems solved by technology

The main reason is that during straight welding, the welding deformation produces a concave, which makes it necessary to increase the amount of mechanical repair and pyrotechnic correction in the two welding areas.

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