Introduce:
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 hot and humid 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. This equipment is suitable for accelerated corrosion testing of: metals and their alloys, metal coatings (anodic and cathodic), conversion coatings, anodized coatings, organic coatings on metal materials, etc.
Function:
The composite salt spray composite test room has the entire inner box space being 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 service life limit. The software includes temperature change test, humidity, precision 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 security 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 that can limit the operating permissions of general operators.
(6) The system software has the function of post-data processing, and can support the import of multiple data files, support data screening, and support arbitrary X-axis and Y-axis selection.
(7) The equipment has multiple functions such as high temperature, wet heat, drying, and salt spray, and can realize automatic cycle control or single function control, with simple operation and data management.
Product Details：
Major Specifications:
| Product name | Walk-in composite salt dry and wet test chamber |
| Product model | CZ-12000D |
| Nominal content | 12m³ excluding top sloping roof volume |
| Inner box size (mm) | 2000×2000×3000 WXHXD (excluding sloping roof height) |
| Outer box size (mm) | About 2350×3030×4350 W×H×D |
| Brine tank size (mm) | Φ700×H 930 Volume 300L |
| Net weight of equipment | About 1400kg |
| Test environment conditions | Ambient temperature is +25℃, relative humidity ≤85%RH, atmospheric pressure 86～106Kpa, no sample in the test chamber |
| Laboratory temperature range | 15℃~+85℃ |
| Saturated barrel temperature range | RT～+70℃ |
| Spray mode | Continuous spray, intermittent spray, program spray three modes can be adjusted by yourself |
| Humidity range | 
Salt spray cycle ≥95%R.H Wet and dry cycle 20%R.H～98%R.H (as shown in the figure) |
| Commonly used alternating salt spray test conditions | 1min～999h can be set arbitrarily |
| Commonly used alternating salt spray test conditions | At 35℃ ambient temperature, 47℃ saturated barrel temperature, 5% salt water concentration spray test time 1min~ 999h can be set arbitrarily, then in the wet heat test temperature 40℃±2℃, relative humidity 93%RH ±2%RH, test time 1min～999h can be set arbitrarily; cycle 1～999 times can be set arbitrarily. Then stand at standard environmental conditions of temperature 23℃±2℃ relative humidity 50%RH±5%RH
1min～999h can be set arbitrarily. |
| Salt spray and dry alternating test | At 35℃ ambient temperature, 47℃ saturated barrel temperature, 5% salt water concentration, spray test time 1min~999h can be set arbitrarily, then switch to 15~30℃ temperature, relative humidity less than 50%RH
Drying test time 1min~999h can be set arbitrarily: |
| Salt spray, dry, wet rapid alternating test conditions |
At 35℃ ambient temperature, 47℃ saturated barrel temperature, 5% salt water concentration spray test time 2h (the device can control 1min～999h and can be set arbitrarily); Then switch to 60℃ ambient temperature within 30min, relative humidity below 30%RH for drying test, test time 4h (the device can control 1min～999h and can be set arbitrarily); Then switch to 50℃±2℃ temperature within 15min, relative humidity greater than 95%RH in hot and humid environment, test time 2h (the device can control 1min～999h and can be set arbitrarily); Then return to the first step of salt spray test within 30min; cycle 1～999 times can be set arbitrarily. |
| Other test conditions | It can conduct NSS salt spray test, AASS acetic acid salt spray test, CASS copper accelerated acetic acid salt spray test, wet heat test, drying test, low temperature test, standard macroclimate environment test test conditions alone or conduct other combined composite test conditions
|
| Control accuracy | Temperature resolution: 0.1℃ Humidity resolution: 0.1%R.H Temperature deviation: ≤±2.0℃ (based on standard temperature monitoring point) Humidity deviation: ≤+2-3%R.H when ≥75%RH; Humidity deviation: ≤±5%R.H when <75%RH; Temperature uniformity: ≤2℃ Humidity uniformity: ≤+2-3%R.H when ≥75%RH; Humidity deviation: ≤±5%R.H when <75%RH Temperature fluctuation: ±0.5℃ Humidity fluctuation: ±2%R.H Note: The temperature uniformity and deviation are the values measured at an ambient temperature of +25℃, relative humidity ≤85%R.H, and without a sample. |
| Heating rate | ≥3℃/min,15→85℃(under average no-load condition throughout the process) |
| Cooling rate | ≥1℃/min,85℃→15℃(under average no-load condition throughout the process) |
| Salt spray deposition | 1～2ml/(h ·80cm²) (collect at least 16 hours and take the average value) |
| Spray pressure | 70～170Kpa |
| PH | 6.5～7.2 |
| Meet the test method | D0160 E/F/G Salt spray test requirements GJB 150.11A-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 Alternating (sodium chloride solution) GB/T2423.17-2008/IEC 60068-2-11-1981 Environmental testing for electrical and electronic products Part 2: Test Method Test Ka Salt spray GB/T10125-2021/IS09227:2017 Artificial atmosphere corrosion test Salt spray test GB/T 2423.3-2016/IEC60068-2-78:2012 Environmental testing Part 2: Test method Test Cab: Constant Damp heat test GB/T 2423.4-2008/IEC60068-2-30:2005 Environmental testing for electrical and electronic products Part 2: Test methods Test Db: Cyclic damp heat (12h+12h cycle) GB/T 31467.3-2015 Lithium-ion power battery packs and systems for electric vehicles Part 3: Safety requirements and test methods: Salt spray test; |
| Equipment meets the test method |
GB/T5170.5-2008 Inspection method for humidity and heat test equipment |
| noise | Less than 75db (measured 1m from the front of the cabinet and 1.2m from the ground) |
| power supply | AC (380 ± 10) V (50 ± 0.5) Hz Three-phase four-wire + protective grounding |
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