Salt spray test chamber test process detailed
The national standard GB/T2423.18-2000 specifies the specific test sequence in the salt spray test process, which is pretreatment, initial test and condition test. Let us explain one by one: First, pretreatment: The relevant standards should specify the method of cleaning the test sample before the test, and should also indicate whether the temporary seal is removed. The cleaning method should not affect the corrosion of the test sample by salt spray. Avoid touching the surface of the test sample with your hands as much as possible before the test. Second, the initial test: Check and record the appearance of the test sample, and test the electrical and mechanical properties of the test sample according to the relevant standards. Third, the condition test: 1. The test sample is placed in a salt spray test chamber according to the state of use, and sprayed at 15~35 °C for 2 hours. 2. After 8 hours of continuous atomization in the test, at any position of the effective space, with a clean collector with a horizontal area of ​​80 cm2, the salt spray solution collected should average 1.0 to 2.0 mL per hour. The number of collectors shall be at least 2, and the location shall not be covered by the test sample and shall prevent condensation from any other source entering the collector. 3. Transfer the test sample to wet heat conditions for storage after each spray. The storage conditions are in accordance with the requirements of GB/T2423.3, that is, the temperature is 40±2°C, and the relative humidity test time is selected according to the regulations in Section 4.2. 4. When the test sample is transferred from the salt spray box to the wet heat box, the salt solution loss on the test sample should be minimized. 5. Test samples must not touch or come into contact with other metals. Their arrangement prevents each other from affecting each other. Instructions for use: (1) The artificial seawater formula is not specified in the international standard IEC68-2-52. In China, the formula of artificial seawater is listed in Appendix A according to the professional standards of the ship. 6. Spray salt spray according to Clause 1 and perform hot and humid storage according to Clause 3 to form a test cycle. Floor World Globe,Modern Floor Globe,Floor Standing World Globe,Free Standing World Globe Ningbo Holly Arts & Crafts Co.,Ltd. , https://www.china-globes.com