First, the temperature requirements of the neutral salt spray test (NSS) test chamber (35 plusmn; 2) ° C, the humidity is greater than 95%, the mixture is 1 to 2 mL / 80 cm * H nozzle pressure It is 78.5 to 137.3kPa (0.8 ~ 1.4 kgf / cm2). In the salt spray test chamber, brine containing (5 ± 0.5)% sodium chloride, a pH of 6.5 to 7.2 was sprayed by a spray device, so that the salt mist settled to the test inspection, after a certain period of time. Surface corrosion state.
Second, copper acceleration acetate salt spray test (Cass) is added to 5% sodium chloride salt on the basis of a general salt spray test to give concentration It was 0.26 g / L, and the pH was adjusted with acetic acid, so that the pH of the salt spray collection liquid was 3.1-3.3. (Test Reference GB / T 10125 Artificial Atmosphere Corrosion Test)Third, the alternating salt spray test is a comprehensive salt spray test (realization of alternating salt spray test chamber.
Fourth, acetate fog test (ASS test) is developed on the basis of neutral salt cockroaches. It is added to 5% sodium chloride solution Some glacial acetic acids.