What requirements should be paid attention to when purchasing a salt spray test chamber? The Beijing Yashilin Technical Department now proposes the following requirements according to the standard requirements, please check carefully.
1. The materials in direct contact with the salt solution and the salt spray in the salt spray test chamber should not react chemically with the salt solution and the salt spray, and the parts that are not in direct contact should be resistant to salt spray corrosion.
2. Salt spray should not be sprayed directly on the test sample.
3. The condensate on the top and inner wall of the box and other parts should not drip on the test sample.
4. The pressure inside and outside the tank must be balanced, and a pressure-balanced vent hole should be provided. When venting, the airflow in the work space should not be excessively turbulent.
5. There should be a sample rack for placing or hanging samples. The sample holder shall not cause electrochemical corrosion with the test sample.
6. The salt mist generated by the sprayer should be minutely dispersed, wet, and dense; the collected liquid after atomization shall not be used repeatedly for spraying except for the baffle back part.
7. Instruments or devices such as temperature adjustment and indication shall be provided.
8. There is a device for indicating the amount of salt fog settling.
9. When atomizing the salt solution with compressed air, the following conditions should be met:
â‘ Before entering the atomizer, the compressed air should be completely filtered out of impurities such as oil dirt and dust;
â‘¡ It should be heated to not lower than the working temperature;
â‘¢ It should be fully humidified, and the relative humidity of the air at the spray outlet should not be less than 85%;
â‘£The pressure of compressed air should be adjustable within the range of (70-170) kPa and should be stable.
10. The salt spray test chamber is equipped with a salt solution filter.
11. The cover of the box should be sealed and reliable, and should not leak air or overflow with salt mist.
12. The appearance of the coating layer should be flat and smooth, uniform color, no fogging, blistering, layering or scratch marks.
For more technical articles about the salt spray test chamber, please visit: Beijing Yashilin Test Equipment Co., Ltd. official website
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