Magnetic powder flaw detection technology

Inactive Publication Date: 2016-07-13
CHONGQING XUNSHENG LOCOMOTIVE PARTS CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] The existing magnetic particle flaw detection process still has certain experience and technicality in the adjustment of process steps and e

Method used

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with embodiment:

[0032] A magnetic particle flaw detection process, comprising the following steps:

[0033] 1), general requirements

[0034] a. All the parts that require magnetic particle flaw detection in the process shall adopt magnetic particle flaw detection; in principle, the flaw detection shall be carried out after all processing and treatment processes are completed; but if the surface treatment process brings difficulties to defect detection, it can be carried out before surface treatment. carry out flaw detection;

[0035] b. In order to prevent strong electric hazards and ultraviolet rays, it is necessary to wear relevant protective equipment and operate in accordance with relevant safety operating procedures;

[0036] c. Those who are color blind and whose near-corrected visual acuity is below 0.8 are not allowed to participate in the magnetic particle testing assessment;

[0037] d...

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Abstract

The invention discloses a magnetic powder flaw detection technology comprising the following procedures: 2), a flaw detection device; 3), a test piece; and 4), a magnetic powder flaw detection operation procedures comprising the steps: (1) pre-treatment; (2) magnetization: e, when a magnetic yoke is adopted for flaw detection, the distance between two poles is in a range of 75-150 mm, the effective flaw detection range of the detection is 1/4 of the distance of the magnetic poles at two sides of the magnetic poles, and the cover area of the magnetic yoke at each time of movement is not less than 25 mm; and f, the above methods all adopt continuous ways, magnetization is carried out for three times for 0.5-2 seconds at each time, the interval time is not more than 1 second, and after the application of a magnetic suspending liquid or a magnetic powder is stopped for 1 second, magnetization (power failure) can be stopped; (3) magnetic marks require to be observed immediately after being formed, and the magnetic marks require to be observed under natural light or lamp light under which the magnetic marks can be clearly identified; and (4) demagnetization is carried out. The technology has the advantages of simple operation, low requirements on operator experience and high product quality.

Description

technical field [0001] The invention relates to a magnetic particle flaw detection technology. Background technique [0002] The existing magnetic particle flaw detection process still has certain experience and technicality in the adjustment of process steps and equipment parameters. For new operators, a lot of practice is needed to master the operation skills and produce better quality products. The product. Contents of the invention [0003] In order to achieve the purpose of the present invention, the present invention provides a magnetic particle inspection process that is convenient, quick and easy to operate. [0004] In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions: [0005] A magnetic particle flaw detection process, comprising the following steps: [0006] 1), general requirements [0007] a. All the parts that require magnetic particle flaw detection in the process shall adopt ...

Claims

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Application Information

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IPC IPC(8): G01N27/84
Inventor 王强
Owner CHONGQING XUNSHENG LOCOMOTIVE PARTS CO LTD
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