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With the widespread promotion of LED applications, the requirements for its reliability are becoming higher and higher. The LED reliability test is to evaluate the stability and reliability of the product in a specific environment and use conditions. For LED products, we mainly focus on the lamp bead life, heat resistance, light decay, impact resistance and environmental adaptability and other indicators of the test and evaluation.
Artificial simulated salt spray test classification:
(1) Neutral salt spray test (NSS test)
It is the earliest and most widely used accelerated corrosion test method. It uses 5% sodium chloride brine solution, the PH value of the solution is adjusted in the neutral range (6.5~7.2) as a spray solution. The test temperature is set at 35℃, and the settlement rate of salt spray is required to be between 1-2ml/80cm2(h).
【 Neutral salt spray test is the most commonly used test method. If no special instructions are made, the salt spray test we talk about usually refers to the neutral salt spray test 】
(2) Acetate spray test (ASS test)
It is developed on the basis of the neutral salt spray test.
It is to add some glacial acetic acid in 5% sodium chloride solution, so that the PH value of the solution is reduced to about 3.1-3.3, the solution becomes acidic, and the salt spray finally formed is also from the neutral salt spray into acid.
(3) Copper accelerated acetate spray test (CASS test)
It is a rapid salt spray corrosion test recently developed abroad. The test temperature is 50℃, and a small amount of copper salt - copper chloride is added to the salt solution to strongly induce corrosion.
(LED chip salt spray test)
(4) Alternating salt spray testIs a comprehensive salt spray test
It is actually a neutral salt spray test plus constant wet heat test.
It is mainly used for cavity type machine products, through the penetration of tidal environment, so that salt spray corrosion is not only produced on the surface of the product, but also produced inside the product. It is the alternating conversion of the product in the salt spray and wet and hot two environmental conditions, and the final examination of the electrical and mechanical properties of the whole machine product.
Model |
Salt Fog Chamber |
STH - 90 |
STH-100 |
STH-120 |
STH-160 |
STH-135 |
STH-200 |
STH-210 |
Internal Dimension WxHxD (mm) |
900x600x500 |
1000x700x600 |
1200x800x500 |
1600x1000x500 |
1350x850x1200 |
2000x1200x600 |
2100x950x1250 |
|
External Dimension WxHxD (mm) |
1500x1300x1000 |
1560x1000x1350 |
1900x1100x1400 |
2300x1300x1400 |
2160x1200x1450 |
2700x1500x1500 |
2711x1150x1970 |
|
Capacity (L) |
270 |
430 |
480 |
800 |
1377 |
1440 |
2500 |
|
Test Standard |
ACSS, SOAK , DRYAIR , HUMI, ROOMAIR |
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Temperature Range |
A: RT (+15 ℃) ~ +85℃ B: -10℃ ~ +85℃ C:-20℃ ~ +85℃ D:-40℃ ~ +85℃ E:-55℃ ~ +85℃ |
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Humidity Range |
20% ~98% R.H (Temperature RT{+15℃} ~ 80℃) ,15%~95% R.H add dehumidifier or Dryer |
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Temperature Rising/ |
Temperature rising approx:0.1~ 3.0℃/min( 3-10℃/min whole Course Average-optional) |
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Analytic Accuracy/ |
0.1℃ ; 0.1% R.H |
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Control Accuracy of Temperature |
±0.5℃ |
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Pressure Bucket Temperature |
Saline test method (NSS ACSS) 47±1℃; Corrosion Test (CASS)63±1℃ |
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Compressed Air Pressure (KGf) |
1.0-6.0 |
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Spray Volume |
1.0-2.0ml/80cm²/h (working at least 16 hours, and take the average value) |
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Compressor |
French "Tecumseh" Brand, Germany "Bitzer" Brand or samilar brand |
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Optional Accessories |
Sample shelf , Cart etc |
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Spray Method |
Continuous spray or Programmable spray |
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Power |
AC220V: 1phase3 lines 50/60Hz |
Salt Mist Test -Corrosion Exposure Testing
What is Salt Mist Test?
Salt mist test is effective for evaluating a variety of corrosion mechanisms, including general, galvanic, and crevice corrosion. Salt spray test chamber provides a controlled accelerated corrosive environment to evaluate the relative corrosion resistance of the coating, substrate, or part itself. Parts or panels are placed inside salt spray chamber and exposed continually for a specified period of time, then evaluated for resistance to corrosion. This type of testing is also known as salt fog testing.
What are the most common Salt Spray Test Standards?
ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus
Daimler Chrysler LP-463-PB-10-01 Salt Spray Test
Ford Motor Company BI 103-01 Salt Spray Resistance Test for Painted Panels and Parts
General Motors GM4298P Salt Spray Test
DIN 50021 Salt spray testing
Nissan M0140 Salt spray testing
Toyota TSH1552G Test Method of Salt Spray
Honda HES 6501 Salt spray test
ISO 9227 Corrosion tests in artificial atmospheres
Magnesium Chloride
Calcium Chloride
JOEO Salt Spray chamber is capable of providing Modified Salt Spray (Fog) Testing per ASTM G85 for all five (5) of the modified salt spray annexes listed below:
Annex A1, Acetic Acid Salt Spray test, continuous (AASS)
Annex A2, Cyclic Acidified Salt Spray test
Annex A3, Seawater Acidified Test, cyclic (SWAAT)
Annex A4, SO2 Salt Spray test, cyclic
Annex A5, Dilute Electrolyte Cyclic Fog Dry test (Prohesion)
Auxiliary Evaluations:
ASTM D1654 Scribing and scribe creep evaluation
ASTM D610 Degree of rusting
ASTM D714 Degree of paint blistering
You can get more about salt fog spray test standards from our JOEO Sales Team.Get a Quote Today!