Active Member
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[China]
Address: No.1 Yanfa 1st Road, Songshan Lake High-tech Industrial Development Zone, Dongguan City 523000, Guangdong Province, China.
Contact name:Wu
ATMARS INDUSTRTY CO., LIMITED |
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What is a SALT SPRAY CHAMBER ?
ATMARS Salt spray chambers or salt spray cabinets are designed to perform salt spray test(salt fog test or salt mist test) on surface coatings or materials in a highly corrosive environment (mainly sodium-chloride, NaCl) through pressureized spray nozzles to check the corrosion resistance of surface coatings or coverings for products usually made from steel, brass, and other metals.
The test results recorded through the process of salt spray testing can show the process of product decay and degradation and help predict the potential lifespan of a product or coating.
Relevant salt spray testing standards are ASTM B117, ISO9227, JIS Z 2371 and ASTM G85.
And there are 3 common Salt spray tests -
NSS: Neutral Salt Spray Test
AASS: Acetic Acid Salt Spray Test
CASS: Cupric Acid Salt Spray Test
NSS is the base of salt spray test, it was developed at around
1930s, it is a neutral test which means the test solution pH value
is at 6.5-7.2.
AASS is the method in NSS solution with addition of glacial acetic
acid in the pH range of 3.1 to 3.3.
CASS is the method in AASS solution with addition of copper
chloride in the pH range of 3.1 to 3.3.
ATMARS Salt Spray Chamber Premium Models -
ATMARS premium models can perform the same basic salt spray tests,
but in addition are equipped with extra features which enable them
to undertake modified salt spray tests such as those defined in
ASTM G85.
Here conventional salt spray is often combined with one other
climate, in a two-part cycle, to accelerate the test. For example:
salt spray and condensation humidity (SWAAT) or salt spray and
drying (PROHESION) or salt spray and SO2 testing.
Performance
ATMARS salt spray test chambers Standard workspace volumes include
108L, 270L, 480L, 800L and 1200L.
| Technical Specifications of ASS Series Salt Spray Environmental
Test Chambers Performance is based on ambient temperature +20℃ or circulating water temperature +25℃, empty load no specimen. | ||||||
| Model | ASS- | |||||
| 60 | 90 | 120 | 160 | 200 | ||
| Workspace Volume | 108L | 270L | 480L | 800L | 1200L | |
Workspace Dimensions (WxDxH)mm | 600 | 900 | 1200 | 1600 | 2000 | |
| 450 | 500 | 800 | 1000 | 1000 | ||
| 400 | 600 | 500 | 500 | 600 | ||
Exterior Dimensions (WxDxH)mm | 1100 | 1410 | 2000 | 2400 | 2800 | |
| 670 | 910 | 1150 | 1350 | 1350 | ||
| 1180 | 1220 | 1450 | 1450 | 1550 | ||
| Power Supply | AC 220V 50Hz | AC 220V 50Hz | AC 220V 50Hz | AC 380V 50Hz | AC 380V 50Hz | |
| Material | PP or PVC | |||||
| Performance | Worksapce temp. range: RT+5℃ to +50℃ (Set according to test
standard); Saturated barrel temp. range: +47℃ to +63℃; Temp. fluctuation: ≤±0.5℃; Temp. uniformity: ≤±2.0℃; Salt spray settlement: 1.0～2.0ml/80cm²/h; pH level: 6.5～7.2 (NSS), 3.1～3.3 (AASS/ACSS). | |||||
| Salt Spray | Spray Tower | Made of acrylic, cone-shape | ||||
| Atomizing Nozzle | Made of PYREX glass | |||||
| Spray Mode | Continuous spray or programmable interval spray | |||||
| Defogging | The mist is exhausted by air extrusion, and the cover (canopy) is tapered to form a top angle of 120 ° C, which is beneficial to the droplets generated by the salt spray not directly dropping on the sample, thereby ensuring the accuracy of the test. | |||||
| Control | workspace temperature control: 0 °C ~ 99.9 °C, accuracy 0.1 °C (double display), PID automatic calculation | |||||
| Heating mat liquid expansion over-temperature protection controller: 0℃～110℃ | ||||||
| Saturated barrel temperature control: 0 ° C ~ 99.9 ° C, accuracy 0.1 ° C (double display), PID automatic calculation | ||||||
| Total time: 0~9999.9h, interval time 0~99.9h | ||||||
| Pressure adjustment structure: primary pressure regulating valve, secondary pressure regulating valve, pressure gauge 2Kg/cm² | ||||||
| *Optional touch-screen controller | ||||||
| Allowable Ambient Conditions | Temperature: +15℃ to 35℃; Relative humidity: ≤85%; Air pressure: 80kPa～106kPa. | |||||
| Safety | 1. Low water level protection, the power supply will automatically
cut off and meanwhile the safety warning light device will display
automatically; 2. Over-temperature protection, the heater power supply will automatically cut off , and meanwhile the safety warning light device will display automatically; 3. Low water level of saline, the safety warning light device will display automatically; 4. Leakage protection function to prevent personal injury and instrument failure caused by line leakage or short circuit. | |||||
| ▲Custom options are available. | ||||||
Applications
Salt Spray chambers are commonly used to evaluate the corrosive
resistance properties of:
- Phosphated surfaces (with subsequent paint/primer/lacquer/rust
preventive)
- Zinc and Zinc-alloy plating (see also electroplating)
- Electroplated chromium, nickel, copper and tin
- Coatings not applied electrolytically (such as zinc flake
coatings)
- Organic Coatings
- Paint Coating
- Aerospace
- Automotive
- Construction
- Paints & Coatings
- Metalworking & Tooling
Test Standards Conformance
JIS H 8502: 1999 Methods of corrosion resistance test for metallic
coatings
IEC68-2-11
IEC68-2-52 1996
ASTM.B117-97
CNS.4158
CNS.4159 CASS
MIL-STD-202F
MIL-STD-750B
MIL-STD-810D
MIL-STD-883C
MIL-STD-19500
GB/T 10125-2012 Corrosion tests in artificial atmospheres-Salt
spray tests
GB/T 2423.17-2008 Envrionmental testing for electric and electronic
products - Part 2: Test method - Test Ka: Salt mist
GB/T 2423.18-2012 Environmental testing for electric and electronic
products －Part 2:Tests--Test Kb: Salt mist, cyclic (sodium chloride
solution)
GB/T 10587-2006 Specifications for salt mist testing chambers
GB/T 10593.2-2012 Method of the measuring environmental parameters
for electric and electronic products-Salt mist
GB/T 1765-1979 Method of producing of paint films for testing heat
and humidity resistance,salt-fog resistance and accelerated
weathering
GB/T 1771-2007 Paints and varnishes—Determination of resistance to
neutral salt spray(fog)
GB/T 5170.8-2008 Inspection methods for environmental testing
equipments for electric and electronic products—Salt mist testing
equipments
GB/T 12967.3-2008 Test Methods for anodic oxidation coatings of
aluminium and aluminium alloys - Part 3 : Copper accelerated acetic
acid salt spray test(CASS test)
