Method for detecting gas leakage point of composite shaping plate weld seam

A composite material and point detection technology, which is applied in the direction of detecting the appearance of fluid at the leakage point, measuring the increase and deceleration rate of the fluid, and measuring devices, can solve the problems of inability to determine the position of the air leakage point, unfavorable weld repair, and complicated procedures and other problems, to achieve the effect of simple and reliable structure, light weight and easy handling

Inactive Publication Date: 2018-07-27
XIAN AIRCRAFT IND GROUP
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Problems solved by technology

With this method, it is only possible to judge whether the weld is leaking, but the location of the leak cannot be determined, which is not...

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  • Method for detecting gas leakage point of composite shaping plate weld seam

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Embodiment Construction

[0020] see figure 1 , a method for detecting air leakage points of composite material type plate welds, which is composed of 1 sealing tape, 2 vacuum bags, 3 soapy water, 4 glass covers, and 5 vacuum joints. The vacuum bag is connected to the template by sealing tape. Make a hole in the vacuum bag, pass the vacuum connector through the hole, and seal it with sealing tape. Connect with vacuum equipment through vacuum connector. During the vacuuming process, the soap bubbles at the weld can be observed to judge the location of the air leakage point. The operation is simple and the function is reliable. The glass cover must have pressure resistance requirements, the bottom of the glass cover has air holes to facilitate air circulation, and the vacuum bag and sealing tape must have airtight requirements. The method for manufacturing the drilling template comprises the following steps:

[0021] 1) Cut a hole in the lower left corner of the vacuum bag 2;

[0022] 2) The threade...

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Abstract

The invention provides a method for detecting a gas leakage point of a composite shaping plate weld seam. The detection is composed of soapy water, a glass cover, a vacuum bag, a sealing tape and a vacuum joint. The position of a gas leakage point can be judged by observing soap bubbles at the weld seam during the vacuuming process. The vacuum bag is soft and thus can be applied to the position detection of the gas leakage point of the shaping plate molded surface weld seam with a large curvature. The method is simple in operation and reliable in function.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a method for detecting air leakage points of weld seams of template plates. Background technique [0002] In the production process of composite material forming tooling, in order to ensure air tightness, it is necessary to perform air tightness testing on the composite material forming tooling plate, determine the location of the air leakage point, and carry out subsequent repairs. At present, the method of making fake parts of composite materials is generally used to test the air tightness. With this method, it is only possible to determine whether the weld is leaking, but the location of the leak cannot be determined, which is not conducive to the repair of the subsequent weld. Simultaneously, the method process of manufacturing fake parts is complicated and the cost is high. According to the production requirements, it is necessary to invent a method for weld seam inspecti...

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Application Information

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IPC IPC(8): G01M3/12G01M3/26
CPCG01M3/145G01M3/2884
Inventor 范喜祥李玉杨刘红昌
Owner XIAN AIRCRAFT IND GROUP
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