Method for detecting high-vacuum sealing performance of indium-silver alloy
A technology of sealing performance and detection method, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, engine sealing, and detecting the appearance of fluid at the leakage point, etc. It can solve the problem of non-quantitative detection of product leakage rate, indium silver Problems such as the leak rate of alloy sealing products cannot be detected, so as to achieve the effect of ensuring consistency
Pending Publication Date: 2022-04-12
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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[0004] In the ground launch stage, the indium-silver alloy sealing product has not yet collected lunar samples, and has not yet been squeezed and sealed, so the sealing performance test does not need to be carried out during the ground launch stage; in the flight stage, the indium-silver alloy sealing product squeezes the lunar sample Sealing, however, due to the unmanned state and high vacuum environment, the leakage rate of indium silver alloy sealed products cannot be detected; in the stage of returning to the ground, the bubble method or other methods can be used to detect the high vacuum sealing performance of indium silver alloy, but This is only a qualitative judgment of whether there is leakage, and cannot quantitatively detect the leakage rate of the product
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[0016] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.
[0017] like figure 1 As shown, the application provides a method for testing the high-vacuum sealing performance of indium-silver alloy, which includes the following steps: Step 1: According to the production process of indium-silver alloy sealing products, manufacture indium-silver alloy sealing products, and extract the ind...
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The invention relates to the technical field of space vacuum sealing, in particular to an indium-silver alloy high-vacuum sealing performance detection method which comprises the following steps: step 1, extracting an indium-silver alloy sealing product sample; 2, extruding and sealing the sample of the indium-silver alloy sealing product, and simulating the working condition of the sealing product; step 3, carrying out actual environment working condition simulation on the indium-silver alloy sealing sample through an environment working condition simulation system; 4, connecting the indium-silver alloy sealed sample with a vacuum pumping system through a quick gas circuit connector, and pumping gas to a background; and 5, opening the vacuum stop valve, and completing the detection of the leakage rate of the indium-silver alloy sealing product sample through a helium mass spectrometer leak detector, thereby obtaining the leakage rate of the indium-silver alloy high-vacuum sealing product. According to the invention, various space environments experienced by the indium-silver alloy sealing product can be simulated, and the leak rate of the indium-silver alloy sealing product can be detected.
Description
technical field [0001] The present application relates to the field of space vacuum sealing technology, in particular, to a method for testing the high vacuum sealing performance of indium-silver alloy. Background technique [0002] The main mission of the third phase of my country's lunar exploration project is to realize the unmanned sampling and return of the lunar surface, break through the lunar surface sampling, drilling sampling, and lunar sample packaging technology. The lunar sample packaging technology is to use the collected lunar samples in a high vacuum environment. The soft metal indium-silver alloy is sealed, and then the lunar samples are brought back to the earth as they are, and then the lunar samples are analyzed and studied. The low leakage rate and high vacuum sealing performance are to prevent the lunar samples from being polluted by the atmospheric environment and ensure the data analysis of the lunar samples on the ground. The key technology of accuracy...
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IPC IPC(8): G01M3/20F16J15/08
Inventor 王克成李得天谢小龙郑瀚段立军周斌王东栋高波谭立王海龙
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH