Paints are used for making a protective covering over any surface. The surface might need protection from many factors like humidity, water penetration, light and other natural factors. On the metallic surface, the coating plays an important role in keeping the corrosion at bay. The environmental conditions impact the surface coating of metal a lot. And, if coating starts to chip off, it exposes the metal to environmental conditions that initiate corrosion. Prior to mass production, the samples are often under different circumstances to estimate the shelf life.
In this test, a salty fog is created inside an enclosed chamber having a predefined temperature of approx. 37°C. The metal sample is placed inside the chamber for a specific duration. Once the test run is complete, the sample is taken out and analysed if it survived the simulated condition or not. The salt spray test is performed according to the testing standards. The humidity percentage, temperature, test duration; everything is predefined in the standards.
What is a Corrosion Test Chamber?
In a salt spray chamber, a salty fog is created using NaCl solution. The fog consists of 5% of salt which is way more than sea water. The pH level of the solution must remain in between 6.5 to 7. The salt should be iodine free. This solution is combined with water and converted in the form of fog using an atomiser. The atomiser comes in two styles, spray style and tower style with baffle at the top. It is very important for the chamber to maintain the simulated conditions until the test completes. Any leakage in the chamber may result in uneven test results.
Presto offers this machine in different capacities with multiple models. For more information about the machine, just call us.