A sampling method for inspection of super pipe forgings used in nuclear power plants

A technology of super pipelines and nuclear power plants, applied in the field of nuclear steam supply systems of nuclear power plants, can solve problems such as difficult inspection of nozzle quality, difficult sampling of irregular sampling parts, and difficult mechanical processing, etc.

Active Publication Date: 2016-10-12
SUZHOU NUCLEAR POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011]The quality of the nozzle is not easy to check, and the sampling of irregular sampling parts is difficult;
[0012] is a special-shaped part, and it is difficult to perform machining and non-destructive testing

Method used

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  • A sampling method for inspection of super pipe forgings used in nuclear power plants
  • A sampling method for inspection of super pipe forgings used in nuclear power plants
  • A sampling method for inspection of super pipe forgings used in nuclear power plants

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Embodiment Construction

[0046] The present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited by the scope of the following embodiments. The implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not specified are usually conditions in routine experiments.

[0047] The invention provides a sampling method for inspection of super pipeline forgings for nuclear power plants, such as figure 1 Shown here is that the super pipeline forging of the present invention includes: a mother tube, a nozzle arranged on the mother tube, the nozzle is formed by heating, and the main size of the mother tube section 10 is: outer diameter D1 =810mm, inner diameter D2=718mm, wall thickness T=46, length L=4500mm, t...

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Abstract

The invention relates to a sampling method for testing the quality of a main steam super pipeline forging. The sampling method has the advantages that the overall quality of the super pipeline forging can be comprehensively tested by carrying out chemical component analysis and carbon-manganese-sulfur inspection on the super pipeline forging and carrying out mechanical property testing and metallographic structure inspection on an obtained sample, so that a manufacturing process of the super pipeline forging can be completely evaluated and the evaluation meets the process evaluation requirements of the nuclear power specification RCC-M, and sampling inspection is only carried out on two most representative nozzles in all the nozzles, without completely damaging a mother pipe and all the nozzles of the super pipeline forging, thus furthest reducing the sampling cost.

Description

Technical field [0001] The invention relates to the technical field of nuclear steam supply systems for nuclear power plants, in particular to a sampling method for inspection of main steam super pipeline forgings. Background technique [0002] At present, the world has entered a new round of nuclear power development. Many countries are actively preparing to build new nuclear power plants. However, the production capacity of important parts in the world is very limited, and manufacturing technology is mainly controlled in a few manufacturing plants. , This can no longer meet the needs of the world's nuclear power development. Combined with my country's policy of developing nuclear power and nuclear power equipment localization, in order to achieve the goal of my country's nuclear power development plan, it is necessary to realize the localization of super pipeline forgings. To truly realize the localization of super pipeline forgings and realize mass production under the condit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/04
Inventor 梁书华张绍军吴洪张文中刘钊阚玉琦黄大鹏赵东海莫洪斌陈红刘立杨文斌邹平国
Owner SUZHOU NUCLEAR POWER RES INST
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