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Judgment method for minimum inserting section size in Charpy impact test sample recombination technology

A Charpy impact sample and recombination technology, which is used in instruments, electrical digital data processing, nuclear power generation, etc., can solve problems such as inability to irradiate supervision, and inability to judge whether the performance of the sample has changed, and achieve a reasonable judgment. Effect

Inactive Publication Date: 2014-06-18
SUZHOU NUCLEAR POWER RES INST +1
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Problems solved by technology

However, this method cannot determine whether the performance of the sample has changed before and after recombination. If there is a significant difference between the recombined sample and the pre-recombined sample, the minimum insert size obtained by this method is meaningless and cannot be used for irradiation. supervision

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  • Judgment method for minimum inserting section size in Charpy impact test sample recombination technology
  • Judgment method for minimum inserting section size in Charpy impact test sample recombination technology
  • Judgment method for minimum inserting section size in Charpy impact test sample recombination technology

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Embodiment Construction

[0025] The preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing:

[0026] The method for judging the minimum insert size in the Charpy impact sample reorganization technique of the present invention comprises the following steps:

[0027] (a) According to the material type of the Charpy impact sample, select n temperature points covering the interval between the upper platform and the lower platform to perform the Charpy impact test on the original sample to obtain the fractured sample, and draw the absorption energy-temperature regression curve, Shear area percentage-temperature regression curve, according to the absorption energy-temperature regression curve, the lower platform energy value, upper platform energy value, absorption energy-temperature regression curve transformation temperature, and first fitting parameters of the Charpy impact sample were obtained, according to the shear area The second fitti...

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Abstract

The invention relates to a judgment method for a minimum inserting section size in a Charpy impact test sample recombination technology. The judgment method comprises the following steps: preparing a recombinant test sample, testing Vickers hardness, monitoring a thermoelectric couple, carrying out metallographic observation and determining a lower limiting value Wa,min, and checking T41J, T56J and FATT (Fracture Appearance Transition Temperature) performance characteristic parameters and the like. After the lower limiting value Wa,min is determined, independent test samples are established for the T41J, T56J and FATT performance characteristic parameters of an original test sample and the recombinant test sample to carry out variance homogeneity judgment, so as to judge whether the performances are changed or not before and after the test sample is recombined; the judgment of the Wa,min is more reasonable, more accurate and more scientific.

Description

technical field [0001] The invention belongs to the technical field of Charpy impact sample recombination, and in particular relates to a method for judging the minimum insertion segment size in the Charpy impact sample recombination technology. Background technique [0002] At present, the radiation supervision of reactor pressure vessel (RPV) in nuclear power plants is mainly to take out the radiation supervision tube regularly, and test and evaluate the mechanical performance test specimens, temperature test devices and dose test devices placed in it to determine the quality of RPV materials. Radiation embrittlement status and operating environment. In order to make full use of the limited samples in the irradiation supervision tube, the sample recombination technology was developed to recombine the broken samples into new samples by welding, so as to obtain more data and improve the accuracy of test results. [0003] The implementation method of the existing sample reco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G21C17/00
CPCY02E30/30
Inventor 王荣山彭啸黄平刘向兵万强茂吕峰陈明亚徐超亮钱王洁范念青
Owner SUZHOU NUCLEAR POWER RES INST
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