Tank fabricating and welding method

Abstract

The invention discloses a tank fabricating and welding method, which is characterized by comprising the following steps of: a. fabricating and welding a tank soleplate, wherein the step comprises: (1) paving the soleplate, and (2) welding the soleplate; and b. fabricating and welding a tank wall board, wherein the step comprises: (1) paving the wall board, and (2) welding the wall board, and the step of welding the wall board comprises: 1) temporarily not welding 300mm of the lower edge of a longitudinal weld and welding the lower edge together with a circular seam after being paired with a next sine wall board; 2) when welding the circular seam, enabling welders to be uniformly distributed on the surrounding of the tank and welded in the same direction; 3) selecting the setting distance of an anti-deformation fixture according to the thickness of the wall board before welding the circular seam, the distance of the fixture of the wall board with delta equal to 6mm being 300mm; and 4) selecting an even number of welders when welding the wall board, the levels of the welders being close, and welding with the same vertical seam and circular seam welding parameters. The tank fabricating and welding method disclosed by the invention has the advantages of simple and convenient operation, strong maneuverability and the capability of effectively controlling the welding deformation of the tank.

Description

technical field [0001] The invention relates to a steel plate welding method, in particular to a tank manufacturing welding method. Background technique [0002] In recent years, the state has advocated energy conservation and emission reduction, and paid attention to environmental protection. The benzene hydrogenation project uses domestic raw materials for deep processing, comprehensive utilization, reduction of energy consumption, and improvement of environmental protection. Major iron and steel enterprises across the country are vying to build benzene hydrogenation units. The storage and transportation facilities in the benzene hydrogenation project, including the construction of tank farms, are one of the important projects of the benzene hydrogenation project. The project involves a large amount of raw materials and processed products that require tanks for storage. However, in the previous welding construction of tanks, it was found that because welding is a processi...

AI Technical Summary

Problems solved by technology

However, in the previous welding construction of tanks, it was found that because welding is a processing process that is very easy to generate residual stress, there are welding residual stresses in welded structural parts that can reach the yield limit of the material, so the bottom plate and wall plate of the tank frequently appear Deformation problems lead to low construction quality and waste of construction materials

[0003] Therefore there is above-mentioned inconvenience and problem in known tank making welding method

Images