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Field stepping type hardness measuring method and device

A measuring system, step-by-step technology, applied in measuring devices, materials analysis using sonic/ultrasonic/infrasonic waves, instruments, etc., can solve the problem of not being able to detect and identify softening areas quickly and effectively, and achieve convenient and reliable control. Simple structure and the effect of improving detection accuracy

Inactive Publication Date: 2018-11-30
HUANENG POWER INTERNATIONAL +1
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  • Claims
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Problems solved by technology

[0004] At present, the P91 pipeline commonly used in China is prone to produce softening zones with obviously low local hardness during the welding and heat treatment process. However, the currently used on-site portable hardness testers are based on the single-point measurement principle, which cannot quickly and effectively detect and identify the softening zone. the specific scope of

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  • Field stepping type hardness measuring method and device
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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0038] Such as figure 1 As shown, the present embodiment realizes a method for on-site step-by-step hardness measurement, which includes the following steps:

[0039] S101. Acquire measurement instructions, including measurement instructions including component material, component specification and size, detection position, step distance, step direction, and softening zone identification hardness threshold, etc.;

[0040] S102, controlling the ultrasonic hardness testing device to move to a designated position according to the measurement instruction, and collecting hardness measurem...

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Abstract

The invention relates to a field stepping type hardness measuring method and device. The measurement method comprises the following steps of 1) acquiring a measurement instruction; 2) controlling an ultrasonic hardness detection device to move to a designated position according to the measurement instruction, and collecting a hardness measurement value of the designated position; and 3) executingthe step 2 for a plurality of times for automatically obtaining the hardness measurement values of a plurality of designated positions, and enabling the hardness measurement values of the designated positions to be compared with corresponding softening area identification hardness threshold values, and obtaining a softening area range of each to-be-tested component. Compared with the prior art, the softening area ranges of the to-be-tested components can be rapidly and effectively detected and identified.

Description

technical field [0001] The invention relates to the technical field of material hardness measurement, in particular to an on-site step-by-step hardness measurement method and a measurement system. Background technique [0002] In the process of manufacturing, installation, welding, heat treatment or service of metal materials, local material properties may be uneven. Component failures in many cases start from inhomogeneous material properties. Here, the area where the local hardness of the material is relatively low is defined as the softening area of ​​the material. When there are no excessive defects, the properties of the material softening zone often determine the overall performance of the material and the service life of the component. [0003] High-temperature and high-pressure pressure pipes, pressure vessels and other components are generally made of high-strength alloy steel. It is easy to produce local softening zone during its manufacture, installation, weldi...

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Application Information

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IPC IPC(8): G01N29/04G01N29/265
CPCG01N29/04G01N29/265
Inventor 谢晶崔雄华陆敏
Owner HUANENG POWER INTERNATIONAL