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Local water washing type fluorescent permeating device and flaw detection method

A fluorescent penetrating and water-washing technology, which is applied in the direction of optical testing for flaws/defects, can solve problems such as difficult control of penetrating operations, reduced sensitivity, and reduced quality of detection, so as to improve detection quality, reduce usage, and reduce environmental pollution.

Inactive Publication Date: 2018-06-29
CHANGCHUN AVIATION HYDRAULIC CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For small components with complex structures, blind holes, shells with many oil (gas) channels, and complex shapes, if the previous infiltration method and infiltration device are used, it will cause difficulty in controlling the infiltration operation, which will reduce the quality of inspection. Reduced sensitivity

Method used

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  • Local water washing type fluorescent permeating device and flaw detection method
  • Local water washing type fluorescent permeating device and flaw detection method

Examples

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Effect test

example 1

[0072] Overhaul part RT18-0121-000 controller shell, process requirements fluorescent penetrant inspection inspection of graphite bearings RT18-0121-006, RT18-0121-002 and RT18-0121-003. Due to the use of the applicator, contamination of other areas is no longer possible when applying RT18-0121-003. In the past, 4 sets of RT-18 were tested at the fastest speed in one day, but now 8 sets can be tested in one day, the amount of penetrant and imaging powder is also reduced a lot, and the cleaning process is also easy, which not only improves the quality and efficiency of detection, but also reduces the amount of sewage .

example 2

[0074] When performing fluorescent penetrant inspection on the opening of a RT105.1.18 starter fuel lock valve with circumferential cracks, when the conventional dipping method or partial application of penetration is used, it will appear that the closing of the component and other surfaces are all penetrant If there are too many displays, the relevant displays cannot be distinguished at all, even if they are wiped with alcohol cotton, they cannot be seen clearly, and they cannot be judged.

[0075] When the partial application device is used, the corresponding application head is used to apply an appropriate amount of local application to the closing part, and the relevant parameters are modified, so that a very clear display of circumferential cracks can be obtained.

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Abstract

The invention relates to a local water washing type fluorescent permeating device. The device comprises a volumetric flask (1), a liquid pump (2), a liquid sucking ball (3), a flow rate adjusting device (4), a coating head (5), a frame (6) and a guide tube (7). The invention also relates to a local water washing type fluorescent permeating flaw detection method. The method comprises the steps of pre-washing of the detected surface, drying, adding of a permeating solution, removing of excessive permeating solution on the detected surface, secondary drying, developing, inspecting and post-processing. With the adoption of the device and the method, components with different structures, different materials and different processing methods can be tested, analyzed and subjected to flaw detectionresearch, so that the detection quality can be improved, and moreover, the detection efficiency is improved; the amount of used detection materials is decreased; and the environmental pollution is reduced.

Description

technical field [0001] The invention belongs to the field of non-destructive testing methods, and in particular relates to a local water-washing fluorescent penetration device and a flaw detection method. Background technique [0002] In the field of non-destructive testing, with the continuous development of aerospace technology and the wide application of many non-ferrous metals and non-ferromagnetic materials, more and more components with complex shapes and structures require local fluorescent penetrant testing. This poses new challenges to the newly formed fluorescent penetrant detection materials, equipment and technology. For small components with complex structures, blind holes, shells with many oil (gas) channels, and complex shapes, if the previous infiltration method and infiltration device are used, it will cause difficulty in controlling the infiltration operation, which will reduce the quality of inspection. Sensitivity is reduced. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): G01N21/91
CPCG01N21/91
Inventor 邰炳芳孙莉
Owner CHANGCHUN AVIATION HYDRAULIC CONTROL