Introduction:
1. The corrosion of protected and unprotected metallic materials is influenced by many environmental factors, primarily depending on the type of metallic material and the type of environment. Designing a laboratory accelerated corrosion test chamber that encompasses all environmental factors affecting corrosion resistance is impossible; therefore, laboratory tests are designed to simulate the factors that play a major role in the corrosion of metallic materials. This equipment is designed to simulate and enhance the effects of the environment on metallic materials exposed to outdoor atmospheres with salt pollution that accelerates corrosion. The equipment includes test methods that cyclically expose samples to salt spray, dry, and humid environments. This equipment is a comparative test, and the results cannot predict the long-term corrosion resistance of the same metallic material used under these environmental conditions. However, this method can still provide valuable information on the relevant properties of materials exposed to salt pollution environments similar to the test conditions. The greatest advantage of this equipment compared to traditional accelerated corrosion tests, such as neutral salt spray (NSS), acetic acid salt spray (AASS), and copper accelerated acetic acid salt spray (CASS), is its ability to better reproduce corrosion occurring in outdoor salt pollution environments.
2. This equipment is suitable for accelerated corrosion testing of: metals and their alloys, metal coatings (anodic and cathodic), conversion coatings, anodic oxide coatings, organic coatings on metallic materials, etc.
Features:
1) Custom designs available to meet diverse customer needs
2) PT100 temperature sensor: high precision, low maintenance
3) Manual or automatic water filling options available depending on installation location, easy to use
4) Independent temperature control chamber and laboratory, connected via damper control; well-designed structure, simplified maintenance
5) Energy-saving design; individual control for different tests
6) Can perform neutral salt spray tests, corrosion resistance tests, drying tests, humidity tests, and static tests independently; also suitable for mixed salt spray, wet/dry, and static tests with automatic control
7) Automatic cyclic spraying, continuous spraying, and timed spraying available
8) Automatic cyclic salt spray, humidity, and drying tests can be performed without moving the product; convenient to use
9) Long-term stable operation
Standards:
1. GB/T20854-2007/ISO14993-2001 Dry and Wet Salt Spray Test
2. GB-T5170.8-2008_Environmental Testing Equipment Inspection Methods for Electrical and Electronic Products__Salt Spray Test Equipment
3. MIL-STD-810 Method 509.5 Salt Spray Test Standard
4. GBT2424.17-2008 Salt Spray Test Method
5. GB-T2423.3-2006 (IEC6008-2-78-2001) Test CAB: Constant Damp Heat Test Method
6. IEC60068-2-52-2017 Environmental Testing - Part 2-25 Tests - Test Kb: Cyclic Salt Spray (Sodium Chloride Solution)
7. IEC 60068-2-11-1982 Electrical Technology. Basic Environmental Testing Procedures. Part 2: Tests. Section 11: Test Ka: Salt Spray
8. ASTM B117-2016 Salt Spray Test Standard
9. ASTM G85 Salt Spray Test Standard
10. ISO 9227-2006 Salt Spray Test in Artificial Atmospheres
11. SAE J2334 Salt Spray Corrosion Test Standard for Coatings
Test conditions:
This composite salt spray test chamber conforms to the salt-dry-wet composite test method: salt spray test → hot air forced drying test → humidification test
(A) Salt spray test: NSS, ACSS, CASS
(1) Neutral and acidic salt spray test:
Laboratory temperature: 35℃ ±1℃
Saturation tank temperature: 47℃ ±1℃
(2) Copper accelerated salt spray test:
Laboratory temperature: 47℃ ±1℃
Saturation tank temperature: 63℃ ±1℃
(3) Settling volume: 1-3ml (ml/ 80cm2/h) (16-hour average)
(4) Spray pressure: 1.0kg/cm2 ± 0.5kg/cm2
(5) Salt concentration: 5% or 5% concentration plus 0.26g copper chloride (CuCl2 2H2O)
(6) pH value: Neutral test 6.5-7.2, Acidic test 3.0-3.3
(7) Sample plate installation angle: 15°-30°
Specification:
Model | eSalt-840C |
Inner Chamber size | 1200 *1000 *700mm (L*W*H), 840L Efficient Working Space: 120L |
Outer size | 2700*1480*1580mm (L*W*H) |
Machine weight | Around 160kg |
Maximum load capacity of the chamber | About 100kg |
Touch screen control with program | 7’’ color touch screen, support Chinese and English language; It can control temperature and humidity, salt spray, and drying. Can set 120 groups program, each group program can set 1-99 steps |
Display resolution | Temperature: 0.01℃; Time: 0.1min; Humidity: 0.1% RH |
Setting range | Adjust according to the equipment's operating temperature range (upper limit +5℃, lower limit -5℃). |
Temperature range | 0℃-60℃; temperature measure by PT100 type platinum resistor |
Humidity range | 30–98% RH |
Control accuracy | Temperature resolution: 0.01℃; Humidity resolution: 0.1%R.H; Temperature deviation: ±1.0℃; Humidity deviation: ±2%R.H; Temperature uniformity: ±2℃; Humidity uniformity: ±3%R.H; Temperature fluctuation: ±0.5℃; Humidity fluctuation: ±2%R.H |
Control system | LCD touch screen programmable controller, power switch, spray indicator light, operation indicator light, fault indicator light, RS-232 communication interface, USB, Ethernet. |
Heating rate | RT→+65℃ ≤ 60 min ; RT→+0℃ ≤ 30 min |
Heating system | 1) Mixing Chamber: Employs a titanium alloy heater and a powerful circulating fan for air circulation. P.I.D. (Power I.D.) control of heating output achieves temperature equilibrium. 2) Test Chamber: Utilizes titanium alloy heating elements for direct air heating. P.I.D. control of heating output achieves temperature equilibrium. 3) Pressure Tank: Employs titanium alloy heating elements for water heating. Compressed air enters the hot water and overflows as bubbles. P.I.D. control of heating output maintains a constant temperature and produces pure spray gas. |
Electric system | Main power circuit breaker, controller, distribution board, cooling fan, over-temperature protector; Power input: Platinum resistance thermometer |
Electric system control mode | Anti-integral saturation PID control BTC balanced temperature control (temperature testing equipment) BTHC balanced temperature and humidity control (temperature and humidity testing equipment) |
Air circulation system | With a built-in air chamber and stainless steel circulating fan, the air is blown out evenly through the air duct via dampers and diffusers, distributing the balanced temperature and humidity in the conditioning chamber to the test space, thereby achieving the purpose of uniform temperature and humidity control. |
Harmony system | Humidifier, dehumidifier, heater, circulating fan, drainage device, water supply device, water level controller, overheat protector, humidifier tube anti-dry burning device, circulating air duct, damper. |
Humidification and dehumidification system | The system uses steam humidification, with the compressor starting to dehumidify and P.I.D. controlling the humidification rate to achieve the desired humidity level. |
Water supply system | The water meets the national analytical laboratory level II water quality standard, with a solid impurity content of less than 1 mg/L. Supply water mode: Automatic / manual dual water supply modes, with an automatic water inlet and a standard set of pure water system. |
Data communication | RS 232 port, It can display curves and acquire data; it can be used as a monitoring and remote control system. |
Data storage | With a 2GB internal memory card, experimental data can be recorded directly without connecting to a computer. Data and curves can be printed via computer, making it easy to use. |
Spray nozzle | Made with a special glass nozzle, the spray volume and spray angle are adjustable. |
Spray device | Set the automatic spray function according to the program, The spray volume can be adjusted by adjusting the height of the spray tower. |
Defogging method | Set the automatic defogging function according to the program; Compressed air is introduced into the chamber room and then the indoor fog is expelled, quickly defogging the air. |
Cyclic working mode | The machine operates using a dry/wet and salt spray separate control mode. Intelligent TS time signal control allows for periodic or continuous spraying, achieving automatic operation of drying, humidity, and salt spray cycles. |
Sample rack | 1. The test chamber uses a PVC triangular groove with an indexing frame mounted on the inner wall, allowing for adjustable test specimen angles. Fogging is uniform on all four sides, ensuring a large number of test pieces can be placed. 2. The perforated PP plate sample placement platform is located at the bottom of the chamber. The platform's evenly spaced perforations allow for rapid drainage of the sprayed liquid, enabling the placement of large samples for testing. |
More control functions | 1. Features editing, clearing, and inserting functions. 2. Equipped with 2 sets of time signal output control (capable of controlling the ON/OFF action of the test object). 3. Features 9 sets of PID parameter settings. 4. Includes skipping and holding functions during program execution. 5. Features power-off program memory and automatic program restart and continuation after power restoration. 6. Includes program copying, piecing, and linking functions, as well as program editing functions such as editing experiment titles. 7. Features data acquisition, export, and graphical viewing functions. 8. Includes automatic PID calculation and FUZZY control. 9. Features date and time adjustment functions. 10. Fault alarm and cause/handling prompts 11. Power failure protection 12. Upper and lower limit temperature protection 13. Calendar timer function 14. Scheduled start function 15. Self-diagnostic function 16. Automatic stop function 17. Button and screen lock function |
Gas supply control | Air compressor → Primary oil → water separator → Pressure reducing valve → Main solenoid valve → Secondary oil-water separator → Saturator → Pressure regulating valve → Spray solenoid valve → Nozzle Note: Air compressor is an optional purchase item. |
standby function | It has a standby power-saving function and can view images in standby mode. |
Curve recording function | It features battery-protected RAM that can save device settings, sampled values, and sampling times; the maximum recording time is 60 days (when the sampling period is 1.5 minutes). |
Dryer filter | Imported dryer filters dry the refrigerant and impurities. |
Refrigerant | The environmentally friendly refrigerant R404a, with an ozone depletion index of 0, is used. |
Troubleshooting Tips function | When machine malfunctions, the controller automatically detects the cause of the malfunction and displays a fault image and corresponding troubleshooting instructions. |
Safety function | Power failure protection function Upper and lower limit temperature protection function Compressor overheat protection function Compressor overcurrent protection function Compressor overpressure protection function Condenser fan overheat protection function Adjustable over-temperature protection function Air conditioning channel extreme over-temperature protection function Fan and motor overheat protection function Heating element dry-burning protection function Water supply abnormality protection function Drainage abnormality protection function Leakage protection Overload and short circuit protection Power supply failure reverse phase protection function |
Chamber material | 1) Inner Chamber: Constructed of PP polypropylene board, offering excellent insulation. 2) Outer Chamber: Constructed of imported PP polypropylene board, aesthetically pleasing. 3) Laboratory Sealing Lid: Constructed of PP polypropylene board, featuring one-button automatic opening, a transparent observation window, and a defogging device for clear observation during experiments. Double-layered sealing edges ensure a strong seal. 4) Humidifier/Water Supply Tank: Constructed of PP polypropylene board, an external humidifier/water supply tank with a concealed water level gauge. A water purifier is installed at the inlet to effectively filter impurities from the water. 5) Saturation Tank: Constructed with PP pipes for optimal insulation and corrosion resistance. 6) Conditioning Chamber: The inner and outer chambers are made of titanium metal, offering corrosion resistance, temperature resistance, and a long service life. 7) Conditioning Chamber Insulation Material: Rigid polyurethane foam insulation layer. 8) Base: Constructed with painted channel steel encased in PP plastic and includes casters. 9) Air Duct: Specially designed sealed damper device automatically switches between salt spray and temperature/humidity testing. |
Working environment | 1. Ambient temperature: 5–30℃; Relative humidity: ≤85% RH; 2. Installation site: Flat, vibration-free ground; 3. Equipment: Keep away from heat sources and flammable or explosive substances; 4. Installation location: Avoid direct sunlight and maintain good indoor air circulation; 5. The installation site must be clean and should not be installed in dusty areas or near dust vents. |
Storage environment requirements | 1. The ambient temperature for the equipment should be maintained within the range of 0℃ to +45℃. 2. When the ambient temperature is below 0℃ (if the equipment is to be shut down for an extended period), all water remaining in the equipment should be drained to prevent the water in the pipes from freezing and damaging the pipes. |
Installation site requirements | The ground is flat, well-ventilated, and free of flammable, explosive, or corrosive gases and dust; there are no strong electromagnetic radiation sources nearby; the ground's load-bearing capacity is not less than 600 kg/m²; adequate maintenance space is provided around the equipment. A: Not less than 400 mm B: Not less than 400 mm C: Not less than 1000 mm |
List of Main Components for the Composite Salt Spray Test Chamber
# | Name of a part | Brand | quantity |
1 | Temperature and humidity controller | Youyi | 1 set |
2 | Compressor | Japan Sanyo | 1 unit |
3 | Device for drying and filtering | Emerson, USA | 1 piece |
4 | Oil extractor | Emerson, USA | 1 piece |
5 | Spray nozzle | order | 2 pieces |
6 | Box shell | Imported 8mm PVC boards from South Asia; welded using self-made methods. | 1 unit |
7 | Inner box of the cabinet | Imported South Asian PVC board welded and manufactured in-house, thickness 8mm | 1 unit |
8 | Harmonization Room | Self-made titanium alloy | 1 unit |
9 | Evaporimeter | Taiwan Yongqiang | 1 unit |
10 | Condensator | Taiwan Yongqiang | 1 unit |
11 | Copper pipe | Domestically produced, high-quality | Batch 1 |
12 | Fan | self-control | 1 page |
13 | Temperature limiter | Korea Rainbow | 2 pieces |
14 | Harmonizer room motor | Taiwan Yutian | 2 units |
15 | Harmonizing chamber impeller | Taiwan Yutian | 2 pieces |
16 | Laboratory heating tube | Custom-made (Titanium tube) | 1 piece |
17 | Heating tube for the mixing room | Custom-made (Titanium tube) | Group 1 |
18 | Humidification heating tube | Custom-made (Titanium tube) | Group 1 |
19 | Solid state relay | Taiwan Yangming | 3 sets |
20 | Cooling medium | Honeywell, USA | 5kg |
21 | Refrigerant solenoid valve | Japanese Tsurugō | 2 pieces |
22 | Spray solenoid valve | Germany is highly proficient. | 1 piece |
23 | De-misting solenoid valve | German Jintong | 1 piece |
24 | Supplementary hydraulic and electromagnetic valve | German Jintong | 1 piece |
25 | Drainage solenoid valve | German Jintong | 1 piece |
26 | AC contactor | French Schneider | 4 pieces |
27 | Thermal Overload Relay | French Schneider | 2 pieces |
28 | Auxiliary relay | French Schneider | 4 pieces |
29 | Phase Sequence Protection | Italian Galale | 1 piece |
30 | Temperature Measurement Device | Hong Kong Baoguang | 2 pieces |
31 | Water box | self-control | 1 piece |
32 | Top and bottom water containers | Self-developed and researched | 2 pieces |
33 | Protective tube | Domestically produced, high-quality | 1 piece |
34 | Wire end | Domestically produced, high-quality | Batch 1 |
35 | Wire casing | Domestically produced, high-quality | 6 items |
36 | PP card slot | Domestically produced, high-quality | 4 items |
37 | Universal Rotary Wheel | Domestically produced, high-quality | 4 pieces |
38 | Pressure regulating valve | Taiwan Shan Nais | 1 piece |
