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2 Four Kinds Of Judgment Methods Of Salt Fog Test Results

How to Properly Maintain the Nozzle of the Salt Spray Test Chamber

The salt spray corrosion test requires a salt spray chamber to produce salt spray. The key is that the test solution is sprayed through a nozzle under a certain pressure of compressed air. The quality of the nozzle directly affects the success or failure of the test. When manufacturing the nozzle, the nozzle aperture, bending angle, etc. are strictly controlled to ensure that the standard salt spray can be produced. In practical applications, the nozzle is often blocked and broken, which affects the normal test. For this reason, some small tricks are introduced to better protect the nozzle of the salt spray test chamber.
1. Always use distilled or deionized water to reduce impurities in the water and reduce the chance of clogging the nozzle.
2. Install the oil-water separator to avoid the introduction of water vapor and oil in the air when compressing the air, so that the oil adheres to the nozzle wall. Due to the small pore size of the nozzle, both the impurities in the water and the oil adhering to it will affect the formation of salt spray.
3, to avoid impact, when installing the nozzle or blocking the nozzle after the dredge, you should pay attention to lightly handle, do not use excessive force to break the nozzle.
4. The spray pressure setting should not be too large. Under normal conditions, the pressure is between 0.07mp-0.17mp. If the pressure is too large, the nozzle will be broken.
The above are some daily precautions for nozzles. If the spray volume is too large/too small or not sprayed during the salt spray test chamber test, check whether the nozzle is normal. If the nozzle aperture is too large, it should be replaced. If it is blocked, apply fine wire and gently pass.

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