Function:
1. The corrosion of protected and unprotected metal materials is affected by many environmental factors, which mainly depends on the type of metal material and the type of environment. It is impossible to design a laboratory accelerated corrosion test room that includes all environmental factors that affect corrosion resistance. Therefore, the laboratory test is designed to simulate the factors that play a major role in the corrosion of metal materials. This equipment is designed to simulate and increase the impact of the environment on metal materials exposed to outdoor atmospheres with salt pollution and accelerated corrosion. The equipment includes test methods for cyclically exposing specimens to salt spray, dry, and humid and hot environments. This equipment test is a comparative test, and the test results cannot predict the long-term results of the corrosion resistance of the same metal material used under these environmental conditions. However, this method can still provide valuable information on the relevant performance of materials exposed to salt pollution environments similar to the test conditions. Compared with traditional accelerated corrosion tests such as neutral salt spray test (NSS), acetic acid salt spray test (AASS), and copper accelerated acetic acid salt spray test (CASS), the biggest advantage of this equipment test is that it can better reproduce the corrosion occurring in outdoor salt pollution environments.
2. The accelerated corrosion test of this equipment is applicable to: metals and their alloys, metal coatings (anodic and cathodic), conversion coatings, anodized coatings, organic coatings on metal materials, etc.
Compound salt spray compound test room, the entire inner box space is corrosion-resistant, the inner box is made of corrosion-resistant materials, and has excellent thermal insulation performance. In addition, the equipment also has the following functions:
(1) It has an emergency braking function. A brake switch is installed on the equipment. When an abnormal situation occurs, the equipment can be powered off by controlling the switch.
(2) The equipment is equipped with corresponding system software. The software can run stably on the provided operating system. The software interface is in Chinese or English and has no limit on the service life. The software includes temperature change test, humidity, accuracy calibration part, and equipment self-test module part.
(3) The system software can record, automatically save, and optimize data in real time. The temperature-time, humidity-time and other curves can be drawn through software settings.
(4) The system software is equipped with a safety protection parameter interface, and after the setting is completed, it is given priority during the test process to ensure the safety of the test.
(5) The system software can achieve the function of test data security protection. The software has an administrator function and can limit the operation rights of general operators.
(6) The system software has a post-data processing function, which can support the import of multiple data files, support data screening, and support any X-axis and Y-axis selection.
(7) The equipment has multiple functions such as high temperature, wet heat, drying, and salt spray, which can realize automatic cycle control or single function control, simple operation, and data management.
Product Details：
Major Specifications:
| Product name | Walk-in composite salt spray test chamber |
| Product model | CZ-21000D |
| Nominal content | 21m3 |
| Inner box size (mm) | Width 2500×Height 2400×Depth 3500
Note: The height does not include the height of the inclined roof, the angle of the inner box inclined roof is 110 °, and the inclined roof height is 880mm |
| Outer box size (mm) | About: Width 2700×Height 3550×Depth 4850W×H×D
Note: The outer box size does not include the size of the salt water tank |
| Salt water tank size (mm) | Ф1000×H950 Volume 500L |
| Net weight of equipment | About 5800kg |
| Equipment function | Salt spray test mode and wet heat mode (including dry and wet heat) can be switched arbitrarily, and program combination test or single function test can be performed |
| Control accuracy | Temperature resolution: 0.01℃
Humidity resolution: 0.1%R.H Temperature deviation: ±2.0℃ (with 1000kg aluminum ingot, measured in the air at a constant distance of ≥150mm from the load surface) Humidity deviation: ≤+2-3%R.H when ≥75%RH; Humidity deviation: ≤±5%R.H when <75%RH; Temperature uniformity: ≤2℃ (with 1000kg aluminum ingot, measured in the air at a constant distance of ≥150mm from the load surface) Humidity uniformity: ≤+2-3%R.H when ≥75%RH; Humidity deviation: ≤±5%R.H when <75%RH Temperature fluctuation: ≤±0.5℃ (with 1000kg aluminum ingot, constant state) Humidity fluctuation: ±2%R.H Note: The temperature uniformity and deviation are the values measured under the conditions of ambient temperature of +25℃ and relative humidity ≤85%R.H. |
| Noise | Less than 75db (measured 1m from the front of the cabinet and 1.2m from the ground) |
| Salt spray test functions and parameters |
Temperature range: adjustable from ambient temperature to 55℃ Salt spray precipitation: 1~3ml/(h ·80cm2) (average value collected for more than 16 hours) Salt spray precipitation uniformity: ±0.5ml/(h·80cm2) (collected for more than 16 hours) Spray mode: continuous/interval program setting, with quantitative control function Spray system: filter installed in the salt water tank can be cleaned and reused; each nozzle can fine-tune the angle, can be disassembled and cleaned; 6 nozzles Salt water concentration: 5%±1% or specified value pH value of salt water: neutral 6.5～7.2, acid 3.0～3.2 Saturator temperature range: adjustable from ambient temperature to 70℃; Spray pressure: 70～170Kpa Salt spray collector: 6 80cm2 collectors are installed in the inner box of the equipment. The end of the collector uses a corrosion-resistant silicone hose to drain into the measuring cylinder for spray volume monitoring. The collector installation specification is in accordance with GB/T5170.8-2017 Environmental Test Equipment Inspection Method Part 8: Salt Spray Test Equipment. The bracket material is pure titanium, and the collecting measuring cylinder is installed on the outside of the equipment
|
| Wet heat/dry mode |
Temperature range: 10～70℃ adjustable Humidity range： Wet heat cycle 20%R.H～98%R.H (as shown) Heating rate: 10→70℃≥3℃/min (under average no-load conditions throughout the process) Cooling rate: 70℃→ 10℃≥1.2℃/min (under average no-load conditions throughout the process) Defog method: Defogging is achieved by condensation defogging or adding compressed air to defogging Defog control: equipped with defogging function and defogging button, which can be used to control the start and stop of the defogging function Defog time: remove indoor fog within 30 minutes |
| The first test method | According to the national standard “GB/T 10125-2021 Artificial atmosphere corrosion test salt spray test”, the sample is subjected to a salt spray test, with continuous spraying |
| The second test method | The test is carried out in accordance with the severity level (5) of GB/T2423.18, and the test cycle is 28 days (672 hours). The simple description is as follows: The salt solution is prepared with sodium chloride analytical grade and distilled water or deionized water, with a concentration of 5%, and the pH value measured at 20 degrees is between 6.5 and 7.2. The sample is placed in a salt spray chamber and sprayed with salt spray at 15℃~35℃ for 2h. After the spraying is completed, it is switched to the wet heat test conditions and stored for 20~22h, with a temperature of 40℃ and a relative humidity of 93±3%RH, forming a cycle. This cycle is repeated three times, and then stored for 3d under the experimental standard atmospheric conditions (temperature of 23±2℃, relative humidity of 45~55%RH), forming a cycle. Repeat 4 cycles. |
| GJB150 Alternating Salt Spray Test Conditions | a. Adjust the test chamber temperature to 35℃ and keep it at this temperature for 2h;
b. Spray test for 24h at 35℃ ambient temperature, 47℃ saturated barrel temperature, 5% salt water concentration, and keep the spray volume at 1～3ml/(h·80cm2); c. Dry for 24h at standard ambient atmospheric conditions of 15～35℃ and relative humidity less than 50%RH; d. Repeat test conditions b and c at least once; Perform physical and electrical performance tests and record test results. |
| Other test conditions | Can conduct salt spray test, damp heat test, drying test, standard macroclimate environment test conditions alone or other combined composite test conditions |
| Meet the test method | DO160E/F/G salt spray test requirements
GJB150.11A-2009 Military equipment laboratory environmental test method salt spray test; GB/T2423.18-2021/IEC60068-2-52:2017 “Basic test procedures for electrical and electronic products” Kb: Salt spray alternation (sodium chloride solution) GB/T2423.17-2008/IEC60068-2-11-1981 Environmental testing for electrical and electronic products Part 2: Test method test Ka Salt spray GB∕T10125-2021/ISO9227:2017 Artificial atmosphere corrosion test Salt spray test GB/T2423.3-2016/IEC60068-2-78:2012 Environmental testing Part 2: Test method Cab: Steady damp heat test GB/T2423.4-2008/IEC60068-2-30:2005 Environmental testing for electrical and electronic products Part 2: Test method Test Db: Alternating damp heat (12h+12h cycle) GB/T31467.3-2015 Lithium-ion power battery pack and system for electric vehicles Part 3: Safety requirements and test methods: Salt spray test; |
| Equipment meets the test method | GB/T5170.5-2008 Test method for damp heat test equipment
GB/T10587-2006 Technical conditions for salt spray test chamber GB/T10586-2006 Technical conditions for damp heat test chamber GB/T5170.8-2008 Test method for environmental test equipment for electrical and electronic products Salt spray test equipment |
| Power supply | AC (380±10) V (50±0.5) Hz three-phase four-wire + protective grounding |
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