Function:
This test equipment simulates the corrosion test in artificial environment, and is used to test the quality of metal materials with or without anti-corrosion protection; it is suitable for rapid analysis of discontinuities, holes and damage in organic and inorganic coatings. In addition, for the purpose of quality control, it can be compared between samples coated with the same coating; salt spray test is particularly suitable for detecting discontinuities such as pinholes and other defects in certain metals, organics, anodized and conversion coatings; among them
1. Neutral salt spray test (NSS) is applicable to (metals and their alloys, metal coatings (anode and cathode), conversion coatings, anodized Coatings, organic coatings on metal materials);
2. Acetic acid salt spray test (AASS) is particularly suitable for testing decorative coatings of copper + nickel + chromium, or nickel + chromium; it has also been found to be suitable for testing anodic coatings of aluminum;
3. Copper accelerated acetic acid salt spray test (CASS) is suitable for testing decorative coatings of copper + nickel + chromium, or nickel + chromium; it has also been found to be suitable for testing anodic coatings of aluminum;
4. Outdoor accelerated test under intermittent salt spray (scab test): mainly used in the automotive industry to study similar test methods developed for under-film corrosion, especially steel plate surfaces with all covering layers damaged by splashing sand and gravel. The scab test is also applicable to test methods for various metal substrates with or without covering layers. Some basic bodies will show a scab-like appearance after the test; some will not.
Note: Since there are many factors affecting the corrosion process, such as the formation of protective films, which vary greatly with the different conditions encountered, there is rarely a direct relationship between the resistance to salt spray and the resistance to other media; therefore, the test results obtained cannot be used as a direct guide to the corrosion resistance of the tested metal materials in all possible environments. Likewise, the performance of different materials in tests cannot be used as a direct guide to the corrosion resistance of these materials in service.
Major Specifications:
| Brine tank size （mm） | Φ700×H 930，Capacity 300L |
| Equipment Net Weight | About 200 kg |
| power supply | AC(220±10)V 50Hz Single-phase three-wire |
| Power supply conditions | The grounding resistance of the protective ground wire is less than 4Ω; TN-S power supply or TT power supply
The user is required to configure an air or power switch of corresponding capacity for the equipment at the installation site, and this switch must be used independently for this equipment (it is prohibited to use a knife switch or power socket). |
| Power capacity
|
AC220C 50HZ Total power 2.6Kw
Maximum current: 12A (recommended switch capacity is not less than: 20 A, the switch is less than 2.5 meters away from the equipment power supply) |
| Test environment conditions | Ambient temperature is +25℃, relative humidity is ≤85%RH, and there is no sample in the test chamber (unless otherwise specified) |
| Test chamber temperature range | RT+5℃～55℃ |
| Saturated barrel temperature range | RT+5℃～65℃ |
| Temperature control performance | Temperature deviation: ±2.0℃
Temperature uniformity: ≦2℃ Temperature fluctuation: ±0.5℃ |
| Test chamber heating rate | RT→+50℃≤45 min |
| Saturated barrel heating rate | RT→+63℃≤45 min |
| Test conditions | NSS or AASS test temperature is 35℃, saturated barrel temperature is 47℃, spray time is adjustable from 1min to 9999h;
CASS test temperature is 50℃, saturated barrel temperature is 63℃, spray time is adjustable from 1min to 9999h; PH value of medicine solution: NSS test 6.0～7.0 AASS/CASS test 3.0～3.1 PH value of spray solution: NSS test 6.5～7.2 AASS/CASS test 3.1～3.3 Running time: 1S～9999H can be set arbitrarily Spray time: 1S～999H can be set arbitrarily; interval period: 1S～999H can be set arbitrarily Note: The loss of carbon dioxide in the solution during spraying may cause changes in pH value. The following methods can be used, such as heating the solution to above 35℃ before putting it into the test equipment, or using fresh boiling water to prepare the solution to reduce the carbon dioxide content in the solution to avoid changes in pH value |
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