Analysis of the test problem of Aspen's salt spray test chamber

Salt spray water test chamber has a very wide range of applications in industry and is very practical. It is an essential test equipment for most industries. However, the most commonly used equipment, the technical point of many manufacturers must not be very understanding, Ai Sixi testing equipment industry more than 20 years of experience, for everyone to analyze the experience of the salt spray test chamber.

The finer the salt spray particles in the salt spray test chamber , the larger the surface area formed and the greater the amount of adsorbed oxygen, and the stronger the corrosion. More than 90% of the salt spray particles in nature have a diameter of 1 micron or less. Research results show that the amount of oxygen adsorbed on the surface of salt spray particles with a diameter of 1 μm is relatively balanced with the amount of dissolved oxygen in the particles. Salt fog particles are smaller and the amount of oxygen that is adsorbed no longer increases.

The influence of the salt solution concentration in the salt spray test chamber on the corrosion rate is related to the type of material and coating. When the concentration is less than 5%, the corrosion rate of steel, nickel and brass increases with the increase of concentration; when the concentration is greater than 5%, the corrosion rate of these metals decreases with the increase of the concentration. The above phenomenon can be explained by the oxygen content in the salt solution. The oxygen content in the salt solution is related to the salt concentration. In the low concentration range, the oxygen content increases with the salt concentration, but when the salt concentration increases to At 5%, the oxygen content is relatively saturated. If the salt concentration continues to increase, the oxygen content decreases accordingly. As the oxygen content decreases, the depolarizing ability of oxygen also decreases, which means the corrosion effect decreases. However, for zinc, cadmium, copper and other metals, the corrosion rate of the salt spray test chamber always increases with the increase of the salt solution concentration. More salt corrosion test chambers, sulfur dioxide test chambers, corrosion resistant chamber test chambers and other related corrosive test equipment Difficult questions welcome inquiries