Salt spray test chamber copper accelerates the configuration process of salt liquid in acetate spray experiment

Original source: Salt spray test chamber copper accelerated acetate spray experiment in the distribution process of salt liquid Xiaobian: Lin frequency instrument

Salt spray test chamber copper accelerated acetate spray experiment and neutral salt spray experiment comparison, except for the test temperature is not the same, the biggest difference is the ratio of salt spray solution, the ratio of salt spray solution is divided into three steps: The sodium chloride solution is made up in distilled or deionized water to a concentration of 50 ± 5 g / L. Sodium chloride must be white and dissolved in water to give a colorless solution. In principle, the sodium chloride should not contain copper and nickel, and the content should be less than 0.1%, and the total impurities calculated by the dry salt should not exceed 0.4%. If the pH of the equipment solution is outside the scale of 6.0 ~ 7.0, the harmful impurities in the salt or water should be observed. 2. In the salt solution, sufficient copper dichloride (CuCl2•2H2O) should be added to make the concentration 0.26±0.02g/L (equal to 0.205±0.05g/L CuCl2•2H2O). 3. In the salt solution, sufficient glacial acetic acid should be added to ensure that the pH of the salt spray solution sample collected in the salt spray test chamber is between 3.1 and 3.3. If the pH of the initially prepared solution is 3.1 to 3.3, the pH of the spray solution will most likely be within this scale. All pH values ​​should be measured with an electrical meter at 25 °C. However, the fine PH test paper which can read and decrease the 0.3PH increase and decrease and check it by the electric measurement can be used for the usual inspection. Any necessary adjustments can be made by analyzing the pure glacial acetic acid or sodium hydroxide. The manufactured solution needs to be filtered before it can be used.

The core function of the salt spray test chamber is to check the corrosion resistance of the product. The most corrosive in the test method is the copper accelerated acetate spray test. Linpin always returns to the user value, pays attention to and deeply understands the needs of users, constantly meets the needs of users with excellent products and services, pays attention to communication with users, respects users' feelings, and grows together with users.

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