Interpretation of salt spray chamber structure and principle

Introduction: The salt spray test chamber is mainly used to evaluate the resistance to salt spray corrosion of electric and electronic products, materials and plating, and the process quality of similar protective layers. II. Neutral salt spray test, Acetate salt spray test, Copper accelerating acetic acid Salt spray test and corrosion paste test. Salt spray test chamber is an important test equipment for various environmental adaptability and reliability of the research machinery, defense industry, light industry electronics, instrumentation and other industries.

First, the structure principle and characteristics of salt spray test box

The salt spray test chamber is mainly composed of a spray tower, a test tank, a test piece, a salt mist sedimentation amount detection device, a discharge device, a sewage discharge device, an air separation/pressure reduction filter, an air saturator, and an automatic salt water level replenishment filter. Oil-free air compressor and electronic control system and other components. The entire equipment is made of glass steel sheet. It has good corrosion resistance, firmness and durability, and the lid is made of a transparent organic glass plate.

A spray tower made of plexiglass is placed in the studio. The tower is equipped with a crystal glass nozzle that is easily disassembled and installed. The nozzle has the advantages of no deformation, no crystallization, and stable spray amount for long-term use, and the size and flow rate of the spray amount are both. You can adjust.

The measuring chamber is equipped with an air diversion/pressure reduction filter, an air saturator, a brine automatic replenishment level filter, and an electrical panel.

Its working principle is:

The compressed air produced by the air compressor is filtered by the filter tank and passed through the pressure regulator to reach the saturator. Then the saturator nozzle at the initial stage produces a moderately high but suitable temperature air temperature, and at the same time, the brine in the spray tower is sucked. Come up to reach the spray effect. The purpose of the air compressor is to make the water form a mist. The role of the saturator is to make the salt water not crystallize.

Second, salt spray test box operation precautions

When we use the instrument, we need to pay attention to the following points:

1. We need to check the water vapor power of the salt spray test box: Check whether there is water shortage in the test box, saturated barrel, or salt water tank; whether the air intake valve at the rear of the equipment reaches 3 kg air pressure and whether the power supply is normal.

2. Record at least once a day, laboratory, saturated barrel temperature, and spray collector collection.

3. The salt spray solution is not recyclable.

4. The temperature of the test chamber, the temperature of the saturated tank, and the required standard, before the spray switch can be turned on to calculate the test time.

5. During the test, continuous operation shall be performed. It shall not be interrupted except for inspection of samples and other work.