Segmented tongue-and-groove penetration welding deformation control method

Abstract

The invention relates to a segmented tongue-and-groove penetration welding deformation control method which comprises the following steps: step 1, carrying out inverted laying of segments, forming a fillet weld between a deck and a sheer strake, forming a framework surface above the deck and a non-framework surface below the deck, and carrying out overhead welding on the fillet weld seam of a tongue-and-groove non-framework surface; step 2, performing hot work back burning on the fillet weld seam of the tongue-and-groove non-framework surface; step 3, performing carbon gouging on the fillet weld of a tongue-and-groove framework surface; step 4, performing penetration welding on the tongue-and-groove framework surface; and step 5, performing hot work back burning on the fillet weld seam of a tongue-and-groove non-framework surface. According to the segmented tongue-and-groove penetration welding deformation control method, turning over of the segments is reduced, and the construction period is shortened; and in addition, through the welding sequence, the flatness of the segmented tongue-and-groove after penetration welding can be ensured, the construction difficulty is reduced, and the stability of the construction quality is ensured.

Description

technical field [0001] The invention relates to the field of shipbuilding, in particular to a deformation control method for segmented groove-and-groove penetration welding. Background technique [0002] In the process of ship section construction, in order to ensure the overall longitudinal strength of some sections of the strength deck area in the middle of the hull, penetration welding is required for the groove and groove fillet welds of the sections in this area. This type of section is generally constructed by the reverse fabrication method, and the groove of groove penetration welding is opened on the hull frame surface. [0003] The conventional welding process is as follows: 1. Segmented reverse laying, the welder welds the penetration fillet weld on the frame surface; 2, Segmented turning and laying for normal, and carbon planing on the non-frame face weld; 3. Weld the fillet welds on the non-frame surface; 4. Carry out pyrotechnic backburning on the fillet welds ...

AI Technical Summary

Problems solved by technology

[0004] However, this welding process has certain disadvantages: due to the large heat input of carbon planing and the length of the free side of the sheer strake, the carbon planing and welding of the grooved fillet weld on the non-frame surface will cause serious deformation of the weld angle, even if the weld is used After welding, pyrotechnic backburning has very limited correction of deformation, so the construction requirements for carbon planing, welders and pyrotechnics are extremely strict, which leads to unstable product quality

At the same time, the section needs to be turned twice, which increases the construction period

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