Method for testing the galvanic corrosion performance of water meters
A galvanic corrosion, water meter technology, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc. The test method is fast and simple, the test results are accurate and reliable, and the effect of improving the disordered competition state
Active Publication Date: 2018-08-03
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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However, the existing detection methods for watch cases are either very complicated or the evaluation standards are unreasonable, and cannot meet the practical needs at all.
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[0032] The content of the present invention will be further clarified below in conjunction with the accompanying drawings, but the following examples are not limiting the protection scope of the present invention.
[0033] figure 1 is a schematic diagram showing the test method of the present invention. Such as figure 1 As shown, in a method for testing the galvanic corrosion performance of a water meter, the case of the water meter includes an aluminum alloy case and an anodized case on the aluminum alloy surface, and the types of joints are configured according to actual needs, which are divided into engineering There are three kinds of plastic joints, copper joints and stainless steel joints. The case of each joint is divided into two types: filter screen and no filter screen. exist figure 1 The case of 3 is shown in , but could also be 2, 4, etc.) as repeated experiments. After the case and joints are corroded in the corrosive solution for one test period (for example,...
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The invention discloses a method for testing galvanic corrosion performance of a water meter, which comprises the following steps: preparing a corrosion solution in a water tank used for testing; connecting a meter case of the water meter to joints with different materials, connecting the water meters to form a circulation loop by a PVC pipe; starting a mechanical pump under testing temperature, generating contact corrosion of the water meter and the joints with different materials; timing when the flow of the corrosion solution is stable, terminating timing after a test period and disconnecting the water meter, and performing corrosion degree grading and corrosion products qualitative analysis according to corrosion degree and threshold of the water meter after terminating timing by aiming the galvanic corrosion performance of the meter case and the joints with different materials. The method has the advantages of rapidity and simpleness, safe used equipment, accurate and reliable test result, and good applicability.
Description
technical field [0001] The invention belongs to the technical field of corrosion testing, and relates to a method for testing the galvanic corrosion performance of a water meter, and more specifically, relates to a method for testing the galvanic corrosion of drinking water meters connected to joints of different materials under the condition of circulating water flow , this method is used to test a drinking water meter and joints of different materials, and to qualitatively evaluate the corrosion resistance of the joints. Background technique [0002] Water resources are an indispensable and irreplaceable material basis for economic construction and people's lives. Water supply systems are an important infrastructure for economic development. With the development of urban construction and the improvement of people's living standards, higher requirements are placed on the quality of drinking water. . How to not only ensure the safety and reliability of water supply water qu...
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IPC IPC(8): G01N17/00
Inventor 宋振纶杨丽景郑必长姜建军姚灵
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI