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Welding and heat treatment processes of large-diameter and thick-wall nuclear process pipes

A process pipeline and large diameter technology, which is applied in the field of large diameter and thick wall nuclear process pipeline welding and heat treatment process, can solve the problems of long working cycle, high quality requirements, and inability to complete normal welding work, and achieve guaranteed welding. Quality, to ensure the effect of continuous welding

Active Publication Date: 2012-07-11
江苏利柏特股份有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] At present, the welding and heat treatment technology of nuclear process pipelines is very difficult, and the quality requirements are high, especially the technical difficulty of nuclear process pipelines with large diameter and thick walls is more difficult, the process is complex, high temperature environment operation, continuous welding operation, and long working cycle
These characteristics make it impossible for conventional welding methods and processes to complete normal welding work.

Method used

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  • Welding and heat treatment processes of large-diameter and thick-wall nuclear process pipes
  • Welding and heat treatment processes of large-diameter and thick-wall nuclear process pipes
  • Welding and heat treatment processes of large-diameter and thick-wall nuclear process pipes

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Embodiment Construction

[0051] The invention will be further described in detail below through specific examples.

[0052] The term "large pipe diameter and thick pipe wall" in the present invention generally refers to a pipe material 1 with a diameter greater than 114 mm and a wall thickness of 20-46 mm.

[0053] A large-diameter thick-wall nuclear process pipeline welding and heat treatment process, comprising the following steps:

[0054] A. Preparation before welding, including the following sub-steps:

[0055] a1) Determine the execution standard of welding and heat treatment; the execution standard in this embodiment is: "Rules for Design and Construction of Mechanical Equipment for Pressurized Water Reactor Nuclear Island" (addition to RCC-M2000 and RCC-M2002);

[0056] a2) Check whether the specifications, grades, welding material specifications, grades and gas of the pipe 1 meet the standards; in this embodiment, the pipe 1 of P280GHφ812.8×46mm is taken as an example, and Table 1 records th...

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Abstract

The invention discloses welding and heat treatment processes of large-diameter and thick-wall nuclear process pipes, which are suitable for welding and heat treatment of large-diameter and thick-wall pipes. The pipes welded by the welding and heat treatment processes are steady and reliable in the quality of welding lines, and can completely meet the quality requirement of nuclear technology.

Description

technical field [0001] The invention relates to a welding and heat treatment process, in particular to a welding and heat treatment process for a nuclear process pipeline with a large diameter and thick tube wall. Background technique [0002] At present, the welding and heat treatment technology of nuclear process pipelines is very difficult, and the quality requirements are high, especially the technical difficulty of nuclear process pipelines with large diameter and thick walls is more difficult, the process is complex, high temperature environment operation, continuous welding operation, and long working cycle . These characteristics make it impossible for conventional welding methods and processes to complete normal welding work. Contents of the invention [0003] The technical problem to be solved by the invention is to provide a large-diameter thick-wall nuclear process pipeline welding and heat treatment process. The welding and heat treatment process has stable a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00B23K9/16B23K9/235B23K33/00C21D9/08C21D9/50
Inventor 陈杰恒方战华霍吉良
Owner 江苏利柏特股份有限公司
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