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Degradation assessment method of heat resistant steel part

A technology for heat-resistant steel and components, which is applied in the field of degradation evaluation of heat-resistant steel components, can solve the problems of difficult restoration of workpieces, high cost, and long evaluation period, and achieve the goal of less difficulty in restoration, short evaluation cycle, and reduced sample cost Effect

Active Publication Date: 2018-06-12
国能锅炉压力容器检验有限公司
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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a method for evaluating the deterioration of heat-resistant steel parts, which can effectively solve the problems of high cost, long evaluation period, The difficult problem of artifact recovery after destructive sampling

Method used

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  • Degradation assessment method of heat resistant steel part
  • Degradation assessment method of heat resistant steel part
  • Degradation assessment method of heat resistant steel part

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Embodiment Construction

[0031] The object of the present invention is to provide a method for evaluating the deterioration of heat-resistant steel parts, which can effectively solve the problem of high cost, long evaluation period, and destructive sampling. The problem that the artifact recovery is difficult.

[0032] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] see figure 1 , figure 1 The flow chart of the method for evaluating the deterioration of heat-resistant steel parts provided by the embodiment of the present invention includes st...

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Abstract

The invention discloses a degradation assessment method of a heat resistant steel part. The degradation assessment method comprises the steps that step a, a miniature sample of the heat resistant steel part is obtained; b, the miniature sample is detected through at least one detection technique, and a first detection result is obtained; c, a sample of the heat resistant steel part is detected, and a second detection result is obtained; and d, the matching incidence relation of the first detection result and the second detection result is determined, a database is built up, the second detection result which is matched with the first detection result can be looked up through the database, and the degradation levels of the heat resistant steel part represented by the matched first detectionresult and the second detection result are the same. The degradation assessment method of the heat resistant steel part can effectively solve the problems that an existing degradation assessment method of the heat resistant steel part is high in cost and long in assessment period, and the recovery difficulty of a workpiece after destructive sampling is conducted is high.

Description

technical field [0001] The invention relates to the technical field of performance detection of heat-resistant steel parts, and more specifically, to a method for evaluating the deterioration of heat-resistant steel parts. Background technique [0002] Most of the workpieces subjected to high temperature and high pressure conditions are made of heat-resistant steel materials, such as high-temperature and high-pressure pipes, pipe fittings, valves, etc. in power plants and chemical plants. With the prolongation of service time, heat-resistant steel components gradually age, and the main performance degradation mechanisms include high-temperature creep, thermal fatigue, and creep-fatigue interaction. [0003] At present, destructive methods (such as pipe cutting, overall sectioning, etc.) are usually used to sample heat-resistant steel workpieces, and through long-term high-temperature creep tests (test period of thousands to tens of thousands of hours), short-term high-temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/18G01N33/20
CPCG01N3/08G01N3/18G01N33/20
Inventor 崔崇袁廷璧牛晓光董勇军肖德铭
Owner 国能锅炉压力容器检验有限公司
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