Method for testing tightness of welding lines

Abstract

The invention provides a method for testing tightness of welding lines, comprising the steps as follows: selecting a transparent vacuum box which is communicated with a vacuumizer through a pipeline and is provided with a vacuumatic pressure gauge capable of displaying the vacuum degree in the vacuum box; selecting a welding line required to be tested, cleaning the areas respectively about 20mm away from the welding line required to be tested at the right side and at the left side, coating soap solution on the areas, and covering the vacuum box on the welding line coated with the soap solution; compressing the vacuum box, opening the vacuumizer valve, observing whether bubbles belch out of the surface of the welding line or not when the vacuum degree displayed on the vacuumatic pressure gauge is in the range of 0.015-0.02MPa; if so, determining the welding line to be unqualified and rechecking after repair; and if not, determining the welding line to be qualified. The invention has the advantages of reducing workload of tightness test for docks, effectively shortening the production cycle of slipways, optimizing tight working environment, enabling high altitude sealing working to be operated on flat ground, and leading the operation to be more safe; the test method is simple and reliable, namely the test is accurate, the operation is convenient, and the tightness working efficiency is improved effectively.

Description

technical field [0001] The invention relates to a method for testing the tightness of welds on shipbuilding plates. Background technique [0002] As we all know, in the process of ship construction, in order to prevent the mutual leakage between various compartments, watertight bulkheads are set in the hull structure, and the inspection of whether these bulkheads leak is carried out through tightness testing. The traditional The tightness operation stage is placed on the berth or in the dock, and then the large cabin is sealed after the sections are closed. For the welds that need to be leaked, tape must be pasted on the welds before the section coating The width is about 100mm. After the tightness is completed, the paint should be repaired after painting. Before the paint repair, the two sides of the weld (150mm) must be polished, and then painted by hand. This operation is not only time-consuming and labor-intensive, but also increases the danger of high-altitude operatio...

AI Technical Summary

Problems solved by technology

This operation is not only time-consuming and labor-intensive, but also increases the danger of high-altitude operations and airtight cabin operations, and brings many difficulties to the quality control of welds. Efficiency, so this test method needs to be improved