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Salt Spray Chamber

Salt Spray Chamber

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Neutral salt spray test (NSS test) is the earliest and most widely used accelerated corrosion test method. It USES a 5% saline solution with a PH set in a neutral range (6 ~ 7) as a spray solution. The test temperature was all 35℃, and the sedimentation rate of salt spray was required to be between 1 ~ 2ml/ 80c22.h.
ASS test is developed on the basis of neutral salt spray test. It is the addition of some glacial acetic acid to a 5% saline solution to bring the PH of the solution down to about 3. The solution becomes acidic, and the resulting salt spray changes from neutral to acidic. Its corrosion rate is about three times faster than the NSS test.
Copper accelerated acetate spray test (CASS) is a kind of rapid salt spray corrosion test developed recently in foreign countries. The test temperature is 50℃, and a small amount of copper salt -- copper chloride is added into the salt solution to strongly induce corrosion. Its corrosion rate is about 8 times that of the NSS test.
The alternating salt spray test is a kind of comprehensive salt spray test, which is actually the neutral salt spray test plus the constant humidity and heat test. It is mainly used for cavity type complete machine products, through the infiltration of tidal environment, so that salt spray corrosion not only in the product surface, but also in the product internal generation. It is the product in the salt mist and.

Salt spray test chamber is an environmental test which USES the salt spray test chamber to create artificial simulated environment conditions to evaluate the corrosion resistance of products or metal materials. It is divided into two categories, one is natural environmental exposure test, the other is artificial accelerated simulated salt spray environmental test. The artificial simulated salt spray environment test is a kind of test equipment with a certain volume space, salt spray test box, in its volume space, the artificial method to create salt spray environment to test the quality of corrosion resistance to salt spray. Compared with the natural environment, the chlorinity of its salt spray environment can be several times or dozens of times of the content of salt spray in the general natural environment, which greatly improves the corrosion speed and shortens the time of obtaining the results of the salt spray test. If a sample of a product is tested under natural exposure, it may take one year for its corrosion to occur, while a similar result can be obtained after 24 hours of testing under artificially simulated salt spray conditions.

Studio sizeD×W×H600×900×500
Performance indicatorsTemperature uniformity≤±2℃
Temperature fluctuation≤±0.5℃
Precipitation of salt spray1∼2ml/80㎝2•h
Spray wayContinuous and periodic optional (instructions when ordering)
Test time1∼999(S、M、H)adjustable
Operation control systemtemperature controlLED digital display P, I, D+S, S, R microcomputer integrated controller
Temperature sensorPlatinum resistance, PT100 Ω
Heating systemAll independent system, titanium alloy electric heating type heater
Spray systemTower spray device with crystallization-free nozzle (mist particles are finer and more evenly distributed)
Spray time1 ~ 99 (S, M, H) with adjustable period
Temperature and humidity inside the boxEquipped with temperature and humidity mercury thermometer
Salt fluid collectionWith standard funnel and standard measuring cylinder
Salt liquid filterWater quality filter installed at suction pipe (stop test to prevent nozzle blockage)
Salt liquid preheatingThe temperature of the liquid salt is balanced with the temperature in the box (it will not affect the test temperature if the liquid salt temperature is too low)


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