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Magnetic powder detection-used natural defect test block and manufacturing method

A natural defect and magnetic particle detection technology, applied in the preparation of test samples, material magnetic variables, etc., can solve the problems of high price, complicated production process, and inability to meet the needs of training and teaching, and achieve simple production, low material cost, Effectiveness in meeting training and teaching needs

Pending Publication Date: 2019-11-19
XIAN AERONAUTICAL POLYTECHNIC INST
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing magnetic particle inspection test block, which is complicated and expensive to make, and does not contain radial and axial cracks at the same time, and cannot meet the needs of training and teaching, and provides a natural defect test block for magnetic particle inspection and Production Method

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  • Magnetic powder detection-used natural defect test block and manufacturing method
  • Magnetic powder detection-used natural defect test block and manufacturing method
  • Magnetic powder detection-used natural defect test block and manufacturing method

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Embodiment Construction

[0038] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0039] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention belongs to the field of magnetic powder detection, and discloses a magnetic powder detection-used natural defect test block and a manufacturing method. The method includes the followingsteps: a 45 # round steel is selected as a base material, and the peripheral surface of the base material is polished; several axial grooves and several radial grooves are opened in the base materialthrough an electrical discharge machining method; the base material is heated to 800 to 1200 DEG C, spheronization is carried out until the mouths of all axial grooves and all radial grooves are closed, and cooling is carried out; the base material is heated to 840 to 880 DEG C, the temperature is kept for 30 to 60 min, and cooling is carried out; and the peripheral surface of the base material ispolished. The magnetic powder detection-used natural defect test block magnetic powder manufacturing process is simple, the cost is low, radial and axial crack defects are included at the same time,and the needs of training and teaching are thoroughly met.

Description

technical field [0001] The invention belongs to the field of magnetic particle detection, and relates to a natural defect test block for magnetic particle detection and a manufacturing method thereof. Background technique [0002] Magnetic Particle Testing (abbreviated as MT) is used to detect surface or near-surface defects of ferromagnetic materials, including direct current method and coil method. After the ferromagnetic material is magnetized, due to the existence of discontinuity, the magnetic field lines on the surface and near the surface of the workpiece are locally distorted to form a leakage magnetic field, which absorbs the magnetic powder applied on the surface of the workpiece and forms visually visible magnetic marks under appropriate light. , showing the location, size, shape, and severity of the discontinuity. [0003] The teaching and assessment of magnetic particle testing requires the use of a large number of test blocks containing natural defects to prov...

Claims

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Application Information

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IPC IPC(8): G01N27/84G01N1/28G01N1/44G01N1/42G01N1/32
CPCG01N27/84G01N1/28G01N1/44G01N1/42G01N1/32Y02P10/25
Inventor 史洪源周鹏朱耀产党杰李杰惠媛媛
Owner XIAN AERONAUTICAL POLYTECHNIC INST
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