Salt spray experimental instrument

1Salt spray experimental instrumentProduct Usage

Cyclic corrosion testing is a more realistic salt spray test than traditional steady-state exposure. Because actual outdoor exposure typically involves both dry and wet environments, simulating these natural, periodic conditions is only meaningful for laboratory accelerated testing. Research has shown that after cyclic corrosion testing, the relative corrosion rate, structure, morphology, and outdoor corrosion results of the samples are very similar. Therefore, cyclic corrosion testing is closer to real outdoor exposure than traditional salt spray methods. They can effectively evaluate many corrosion mechanisms, such as general corrosion, electrochemical corrosion, and crevice corrosion

The purpose of cyclic corrosion testing is to reproduce the types of corrosion in outdoor corrosive environments. The test exposes the sample to a series of cyclic environments under different conditions. Simple exposure cycles, such as the Prohesion test, involve exposing the sample to a cycle consisting of salt spray and drying conditions. More complex automotive testing methods require not only salt spray and dry cycles, but also wet and static cycles.

IISalt spray experimental instrumentIntroduction to the work process:

The spray system consists of a salt water tank, a pneumatic system, a salt water storage tank, a spray tower, a nozzle, etc. The natural drop is used to flow salt water from the outside to the laboratory, and the salt solution is atomized by compressed air through the spray nozzle. The temperature in the box is heated by the electric blanket heating wire on the box wall. When the temperature is stable, turn on the spray switch, and then conduct the salt spray test. Compared with the ordinary salt spray test machine, the temperature in the test room in this state is heated by the built-in water tank type heating. While ensuring the temperature uniformity, the influence of water vapor of the ordinary salt spray test machine on the test results is minimized.