Compound Salt Spray Test Chamber GT-F50C

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

Salt Spray Tester Work process introduction

Spraying Process for Cyclic Corrosion Testing

1. The salt spray system consists of a solvent tank, pneumatic system, water tank, spray tower, and nozzles. Utilizing Bernoulli's principle, salt water is transported from the storage tank to the test chamber. The spray nozzles and heating elements provide the required humidity and temperature within the chamber. The salt solution is atomized by compressed air through the spray.

2. The temperature inside the chamber is raised to the specified level by a bottom heating rod. Once the temperature stabilizes, the spray switch is turned on, and the salt spray test begins. Compared to ordinary salt spray test chambers, in this state, the temperature inside the test chamber is achieved by heating the air through the heating rod, ensuring temperature uniformity while minimizing the impact of water vapor on the test results compared to ordinary salt spray test chambers.

3. The movable spray tower design facilitates disassembly, cleaning, and maintenance, and provides more flexible and convenient utilization of the test space.

Compound Salt Spray Test Chamber Key Specification

Features of the Salt Spray Corrosion Test Chamber

1. Controller: The controller uses a U760-SAH 16-bit true-color touchscreen with 120 program groups and a total cycle count of 1200.

2. Temperature Sensor: Corrosion-resistant platinum resistance thermometer PT100Ω/MV.

3. Heating Method: Employs a high-speed titanium alloy heater with multi-point layout for stable and uniform heating.

4. Spray System: Tower-type spray system with high-grade quartz nozzles, preventing crystallization during prolonged operation and ensuring uniform mist distribution.

5. Salt Solution Collection: Meets national standard requirements for funnels and measuring cylinders; sedimentation rate is adjustable and controllable.

6. Two-stage air intake depressurization ensures stable spray pressure.

The damp heat process of cyclic corrosion testing

The humidity system consists of a steam generator, blower, water circuit, and condenser. After the salt spray test, the spray tester will have a demisting program to quickly remove the salt spray from the test chamber. Then, the evaporator will output appropriate temperature and humidity based on the controller's settings. Generally, the humidity will be more precisely calibrated and stabilized after the temperature has stabilized.