Prefabricating method for large stainless steel tank wall plates in high temperature environment

Abstract

A prefabricating method for large stainless steel tank wall plates in a high temperature environment is characterized by comprising the following steps that a, composition is conducted according to construction drawings and the mounting positions of the wall plates; b, blanking is conducted according to a wall plate composition drawing; c, grooves are formed in the steel-plate butting edges, oxide scale is removed, after head pressing, rolling is conducted through a rolling machine, and the rolled wall plates are vertically placed on a platform; d, the surfaces of the wall plates after arc rolling are flat and smooth, each wall plate is marked through a marking pen or paint after prefabricating; and f, after rolling, the wall plates are vertically placed on the platform and checked through wall plate sample plates, specifically, in the vertical direction, checking is conducted through the linear sample plate, each gap is not larger than 2 mm, and in the horizontal direction, checking is conducted through the arc sample plate, each gap is not larger than 4 mm. The prefabricating method for the large stainless steel tank wall plates in the high temperature environment has the advantages that manufacturing steps are reasonable in design, the manufacturing precision of the wall plates is high, the wall plate quality is reliable, and the solid foundation for assembling of the next step is created.

Description

technical field [0001] The invention relates to a method for manufacturing a tank wall, in particular to a prefabrication method for a large stainless steel tank wall in a high-temperature environment. Background technique [0002] Chinese patent CN104002079A disclosed a method for assembling the spherical shell parts of a stainless steel spherical tank on August 27, 2014, which includes the following steps: [0003] In the first step, place the press-down template on the tire frame; [0004] In the second step, the stainless steel spherical tank shell plate to be assembled is placed on the lower pressure template; [0005] The third step is to place the upper pressure plate on the stainless steel spherical tank shell; [0006] The fourth step is to clamp and fix the upper pressure formwork, the stainless steel spherical tank shell plate and the lower pressure formwork by using the clamp; [0007] The fifth step is to weld the stainless steel spherical tank shell plate an...

AI Technical Summary

Problems solved by technology

However, this method of relying on pressing plate forming will cause difficulty in the assembly of tank panels in high temperature environments, especially in the assembly of large stainless steel tank panels, because it does not control the dimensional accuracy of each tank panel, and does not set Allowable deviation range, in severe cases, there will be a dilemma that the spherical shell parts of the stainless steel spherical tank cannot be assembled

[0008] Therefore there is above-mentioned inconvenience and problem in the making of known large-scale stainless steel tank wall plate

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