A kind of manufacturing method of nuclear power plant steel lining

Abstract

The invention belongs to methods for manufacturing a steel lining, in particular to a method for manufacturing a steel lining of a nuclear power station. The method comprises the steps as follows: a first stage: one unit welding length is welded in the centermost position of a weld joint required to be welded, wherein the unit welding length refers to a section of a fixed length; a second stage: an another unit welding length is welded after skipping the unit welding length in a direction; after the another unit welding length is welded, an another unit welding length is welded after skipping the unit welding length in a direction opposite to the direction of the previous welding direction; and the processes are repeated until the end of the weld joint is welded; and a third stage, the skipped weld lengths in the previous welding processes are welded toward two sides with the centermost position of the weld joint as a center. The method for manufacturing the steel lining of the nuclear power station has the advantages as follows: 1), a welding area can be prevented from producing an over high temperature during welding , wave transformation is prevented, the steel lining can be guaranteed to be compactly attached to concrete, and holes are prevented; and 2), a plurality of welders can perform construction at the same time, the construction period is reduced, and the efficiency is accelerated.

Description

technical field [0001] The invention belongs to a steel lining manufacturing method, in particular to a nuclear power plant steel lining manufacturing method. Background technique [0002] Various facilities of nuclear power plants often need to install steel linings, and place equipment containing radioactive liquids in the steel linings. In the process of manufacturing the steel lining in the traditional technology, the steel plate is generally bent into the required cubic structure, and then the adjacent steel plates are welded along the joint. After the welding is completed, a cuboid cavity without a cover is formed. Solder in order from left to right. The disadvantage of this kind of welding is that during the welding process, due to the local and uneven heating and cooling of the weldment, the degree of thermal expansion and contraction of the metal at each part of the welded joint is different. The temperature of the welding seam and its surrounding metal is high, a...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to aim at the defects of the prior art, and provide a welding method for steel linings of nuclear power plants that produces less stress during the welding process, is evenly welded, and is less prone to cracks in the weld seam.

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