Salt Spray Corrosion Test Chamber

Product Introduction

Continuous salt spray test chamber is widely used to test the corrosion resistance of components and coatings. Applications include industrial, maintenance, construction and marine coatings; electroplating and paint layers; aerospace and military coatings, surfaces and components, electrical and electronic systems and components.

Most of these tests, according to specific specifications, are widely used in related corrosion testing and are typically run at elevated temperatures, excluding drying cycles. The required spray air should be heated before entering the nozzle.

During the salt spray function, the test chamber acts as a typical conventional salt spray operation.

• The air injection solenoid valve opens, and compressed air is humidified through a saturator (humidity helps maintain stable pH concentration) to the nozzle.

• The corrosive solvent from the brine tank is drawn into the nozzle, where it mixes with the compressed air.

• The nozzle sprays the brine solvent and air into a corrosive mist.

The chamber heater maintains the programmed chamber temperature.

This function is also used for pure water mist exposure.

Drying Environment

During the drying function, the dehumidification system is turned on to remove moisture from the box.  As the fan operates, the indoor air enters the air heater and then into the box, thus creating low humidity conditions in the box. The cabinet temperature is controlled by the cabinet heater and the air heater. Before the end of the drying process, the air heater is turned off for 5 seconds to prevent overheating of the heater channel and components near it due to the fan shutting off.

Humidity Environment

During the humidity function, hot water in the humidification tank boiler is evaporated into the tank to maintain the set humidity of the tank.

Condensation Environment

During the condensation process, the water in the tank is heated by heating tubes in the bottom of the tank to maintain the tank at approximately 100% relative humidity.

Rest (Storage) Environment

During the static function, the cabinet temperature is automatically maintained by the cabinet heater, without generating spray, drying, air washing, or humidity.

Standards

GB/T5170.8, GB/T10587, GJB150.11, GB/T10125, GB/T2423.17, etc.

DIN50021 DIN50017 DIN50907 ISO 11977 ISO 9227 ASTM B117

ASTM G85 Automotive and Other Industry Specification

Technical Data

1.Experimental space: 900 × 600 × 500 (W×H) mm Other sizes can be customized

2. Outer space: according to actual dimensions

3. Power supply: 380V 6KW 50HZ max 30A

4. Materials:

The laboratory adopts imported PVC board, which is acid and alkali resistant;

(B) Imported PVC board from the outer box, acid and alkali resistant.

(C) The test recharge tank is equipped with a hidden water station that is easy to clean and resistant to breakage.

(D) The saturated gas cylinder adopts SUS #304不锈钢高压筒, which has the best heat preservation effect.

5. According to customer testing requirements, salt dry and wet compound test can be set

Salt spray test - moisture/wet test

Salt Water Spray Laboratory: National Security Administration, Chinese Academy of Sciences

(1) Laboratory: 10 °C ~ 50 °C

(2) Saturated air barrel: 47 °C ± 1 °C

(B) Moisture test:

(1) Temperature: 40°C ± 2°C

(2) Humidity: greater than 93% ~ 100%

(2) Saturated air barrel: 47 °C ± 1 °C

(C) Drying test:

(1) Temperature: 15°C~50°C±1°C

(2) Humidity: more than 30%

6. Gas supply system

The air pressure is 1 kg/cm2 and can be adjusted in two stages. The first is the imported pressure regulating filter with water filtration function.

Roughly adjusted to 2-2.5kg/cm2, the second is the imported precision pressure regulator, adjusted to the pressure gauge 1kg/cm2.

7. Spraying method:

1. Apply Bernuert's principle to take and absorb salt water and atomize it, with a uniform degree of atomization, no blocking of crystallization, and ensuring the standard of continuous testing.

2. Nozzle: Made of special glass nozzle, the size and angle of the spray can be adjusted.

3. Spray volume: adjustable 1.5 ± 0.5 ml 80 cm²/hour (16 hours average volume).

4. Large brine storage tank, 48 hours continuous spraying.

8. Heating system:

External hot air heating method is used to reduce standby time and component damage rate.

S.S.R controls the heating power, accurate temperature and low power consumption. (Titanium alloy anti-corrosion pipe for electric heating pipe)

9. Circuit control system

1. The main controller adopts a 7-inch LCD man-machine interface, and the main screen can plan the test program.

2. The fixed time can be set to 0-999 H 59 MIN.

3, Program mode can set salt spray and moisture test at the same time

4. With the memory device powered off, you can continue to execute the remaining programs when the power is restored.

5, The rise and fall of temperature can be used for speed control and self-calibration of temperature and humidity reference points.

6. Temperature and humidity sensor DIN PT - 100 Ω (platinum).

10.Inlet and drainage system:

The water inlet adopts an automatic replenishment system. When the water level is too low, it is automatically replenished, and manual hydration can be used.

The drain pump is acid, alkali, and corrosion resistant, which increases the service life and reduces the waiting time for drainage.

All pipe fittings are imported acid and alkali corrosion-resistant components with long life.

11. Humidification system:

1. Electronic bit mode P.I.D micro humidification system is adopted.

2. Included overheating and overflow double protection device.

3. The humidification and dehumidification system are completely independent.

4. Water level control mining highly molecular float water valve.

5. Automatic humidification and hydration device. (The machine should be connected to the water source)

12. Dehumidification system

The evaporator condenses and dehumidifies and stabilizes the humidity.

Bubble acceleration humidifier, humidity stabilization speed is fast.

It adopts a high-speed return air extraction system.

13. Safety protection device

1. Fuse protection switch with leakage power off type.

2. Low water level protection switch.

3. Low salt protection switch

4. Double over-temperature protection device to prevent mechanical or electronic movement from getting out of control.

5. Chinese indicator screen of fault point.

14. Contents

1. 6 shelves

2. Two standard measuring tubes

3. 2 glass filters

4. Collector 80 cm²

5. 2 glass nozzles

15. Accessories: 500 grams of test drug sodium chloride (NaCl), 2 bottles of operating manual, 1 copy

16. Operating Environment: Performance guaranteed ambient temperature range: +5℃ to +30℃ (excluding minimum usable temperature, maximum heat load capacity, and cooling time)