Test piece for magnetic powder detection by axial electrifying method and detection method of test piece
A magnetic particle detection and detection method technology, applied in the direction of material magnetic variables, etc., can solve the problems of unseen detection method process verification, etc., to achieve the effect of improving detection ability and optimizing process parameters
Pending Publication Date: 2022-05-06
中国人民解放军63836部队
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Problems solved by technology
[0002] In the standards for magnetic particle testing methods, there are no specific requirements and related content for the detection method, operation process, sensitivity verification test piece, process verification, etc. that are suitable for the detectable depth range of the near-surface longitudinal defects of ferromagnetic solid and hollow workpieces.
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[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0027] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used, or the orientation...
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Abstract
The invention belongs to the technical field of non-destructive testing, and discloses a test piece for magnetic powder detection by an axial electrifying method and a detection method of the test piece. The detection method comprises the following steps: fixing a test piece between two chucks of a magnetic detection table and keeping the test piece horizontal; electrifying and magnetizing the test piece, and applying magnetic powder or magnetic suspension to obtain a magnetic trace; recording the size of the magnetization current and the length of the magnetic trace; and calculating the magnetic powder detection depth according to a formula. The test piece provided by the invention can be used for detecting the detectable depth of a near-surface longitudinal defect by magnetic powder through an axial electrifying method; the detection method of the test piece can be used for formulating a suitable and feasible axial electrifying method magnetic powder detection process, verifying process sensitivity, resolution and reliability of detectable depth of near-surface longitudinal defects of ferromagnetic solid and hollow workpieces, and optimizing axial electrifying method magnetic powder process parameters; and the near-surface longitudinal defect detection capability of the type of workpieces is improved.
Description
technical field [0001] The invention belongs to the technical field of non-destructive testing, and in particular relates to a test piece used for magnetic particle testing by an axial energization method and a testing method for the test piece. Background technique [0002] In the standards for magnetic particle testing methods, there are no specific requirements and related content for the detection method, operation process, sensitivity verification test piece, process verification, etc. that are suitable for the detectable depth range of the near-surface longitudinal defects of ferromagnetic solid and hollow workpieces. Therefore, relevant experimental research is carried out to improve the detection ability of near-surface longitudinal defects and to enable process verification, so that the magnetic particle inspection of the axial current method can truly cover the welds, machined parts, shafts, pipes, solid and hollow workpieces of ferromagnetic pressure-bearing equipm...
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IPC IPC(8): G01N27/84
CPCG01N27/84
Inventor 蒋浩乐开白马学荣马鹏姚洋刘道云左继锋吴涛奚修阳
Owner 中国人民解放军63836部队