Composite Salt Spray Test Chamber

1.Equipment model, specifications and quantity:

1.1 Equipment name: Compound salt spray corrosion test chamber;

1.2 Model:BT-1200D;

1.3 Quantity：1 unit;

2.Equipment features and uses:

The composite salt spray test chamber can control parameters such as temperature, humidity and salt spray concentration;
The composite salt spray test chamber is a device used to simulate the salt spray corrosion environment. It can evaluate the corrosion resistance of various materials and coatings in a humid acidic salt spray environment. The test chamber consists of a control system, a spray system and a test chamber, and has multiple functions and features.

3.Implementation standards:

Neutral salt spray test (NSS), acetic salt spray test (ASS), copper accelerated acetate salt spray test (CASS) can be carried out according to GB/T10125-1997, ASTM B117-2002, BS7479:1991, or GM9540P Conduct cyclic corrosion tests according to standards.

3.1. GB/T10587-2006 Salt spray test chamber technical conditions;

3.2. GB/T10125－97 Artificial atmosphere corrosion test Salt spray test;

3.3. GB 2423.17-93《Basic environmental testing procedures for electrical and electronic products Test Ka: Salt spray test method》;

3.4. GB 6460-86 Metal covering Copper accelerated acetate salt spray test (CASS);

3.5. GB 6459-86 Metal Covering Acetate Salt Spray Test (ASS);

3.6. GJB150,ASTM B117,ASTM B368,ASTM B380,ASTMD1735,ASTM D2247,ASTM G85 A1, GM4465P,ISO9227,DIN 50021.

4.Main technical specifications and parameters:

Testing room capacity: 410L

Temperature range: Ambient to +60°C

Humidity range: 95 to 98% RH

Temperature Fluctuation:+ 0.5°0

Temperature Deviation: +2.0°C

Spray deposition: 1 to 2 ml/80 cm2*h

spray type: Continuous /Periodic

Spraying system: Atomizer tower and Spray nozzle

Air preheatina: Saturated air barrel: 31 L

Heating element: Nichrome heater

Salt fog collection: Fog collector and Fog measure cylinder

Standard sample holder: 8 round bars and 7 V-shaped grooves

Controller: PlD

Sensor: PT100 Q/MV A-class sensor

Housing: Glass fiber reinforced plastics

Lid: Transparent resin lid

Sealing: Hydrostatic hood sea

Protection: Humidifier Drycombustion Protection:Over-temperatureProtection,Over-current Protection:Water shortage Protection,Earth

leakage Protection;

Maximum noise: 65 dBA

Power supply: 220 V 50 Hz1 P

Water solution tank dimension(WxDxH):350x180x320 mm

Internal dimension(WxDxH):1100x750x500 mm

5.The main structural components of the test chamber are:

5.1 Material: PP polymer corrosion-resistant material;

5.2 Salt solution refill tank:60L,Convenient to replenish salt solution at any time;

5.3 Saturated barrel: Made of SUS304 high-grade stainless steel plate, it has good resistance to high temperature and high pressure, and provides consistent moist air with the inside of the chamber;

5.4 Laboratory sample rack: V-shaped bracket and 0-shaped two-layer suspension bracket are made of fiberglass rods, which are corrosion-resistant and load-bearing. They can place a large number of test pieces and optionally choose 15° or 30° to place the test plates;

5.5 Heating method: The salt spray test temperature in this series of test chambers is heated by dry-fired heating tubes, making the chamber temperature more uniform and stable;

5.6 Humidification system: The humidification pipe of the humidification barrel is introduced into the working room, and the fan in the working room stirs evenly. The humidity is expressed by the dry and wet bulb temperatures;

5.7 Air conditioning system: This system consists of an adjustment chamber, drying heater, evaporator, humidifier expansion tube, centrifugal fan, etc. The purpose is to send the dry temperature and moist air adjusted in the adjustment chamber to the work after being fully stirred. Indoors, it enters the return air outlet and is sent back to the regulating chamber to continue the cycle, over and over again;

5.8 Box cover: It has sufficient strength and rigidity to observe the spray conditions. Adopting a water-sealed structure to ensure that salt spray does not overflow. The box cover is automatically protected when opened, and the cyclic corrosion test is automatically started from the breakpoint after being re-covered. The box cover adopts an included angle of 110º ~ 120º to ensure that condensed water does not drip on the test piece.

5.9 It is equipped with a balanced exhaust hole to prevent the pressure inside the box from rising, and does not cause the airflow in the work space to move excessively when exhausting;

5.10 Equipped with a graduated separatory funnel to collect and visualize the salt spray sedimentation outside the box;

5.11 Equipped with two spray towers, it can meet the demand for salt spray deposition more evenly and quickly.

6.Gas supply system:

6.1 The air source is supplied by an air compressor (prepared by the customer), which is filtered by the first-level air purifier, and then sent into the saturated barrel after the second-level air pressure is adjusted;

6.2 This test chamber is equipped with two air pressure regulating valves. When the air pressure provided by the air compressor is connected, the pressure of the first pressure regulating valve entering the gas pipeline should be adjusted to between 0.2-0.4Mpa;

6.3 The second pressure regulating valve entering the nozzle (that is, the regulating valve that adjusts the spray pressure), the pressure should be adjusted to between 0.07-0.17MPa;

6.4 Air circuit system: stable and reliable imported air circuit components.

7.Spray system: the nozzle is removable for easy cleaning

7.1 The airflow spray method and the siphon principle are used to atomize the absorbed salt solution through the nozzle, and the atomization particle size is uniform, which can ensure the continuity and stability of the test;

7.2 It uses a crystal-free nozzle and a baffle-type spray device. After being diffused by the baffle, it falls evenly and freely into the test chamber, so that the salt spray deposition amount reaches the specified value;

7.3 The salt water before spraying is injected into the preheating tank through the salt water storage tank, preheated and then introduced into the nozzle. Make the temperature fluctuation of the studio after constant temperature smaller;

7.4 Salt spray deposition amount: The nozzle pressure can be adjusted according to the size of 0.5--2.0 ml80cm 2/ 1hr (16hr average amount).

8.1 Temperature and humidity controller

●Display: 7" touch screen controller; 800×480 resolution. Operation mode: fixed value or program;

●Setting method: Chinese menu, touch screen human-computer interaction interface input Program capacity: 99x99 test programs can be stored. Ethernet monitoring, 60S interval can be stored for one year, temperature monitoring can be connected to computer software, test data can be transmitted in real time, and has mobile phone remote monitoring function;

●Program length: Each group of programs can have up to 99 segments. Number of cycles: Each program segment can be cycled 999 times;

●Setting range:

△Temperature: -20℃～+80℃,

△Humidity: 30～98%RH,

△Time: 0～99 hours and 59 minutes;

●Resolution: temperature: 0.1℃, humidity: 0.1%RH, time: 0.1min;

●Input: PT100 platinum resistor;

●Other functions: The equipment has various alarm protection functions such as over-temperature, fan overheating, over-current, etc., and the controller has a fault self-diagnosis function that ensures that once an abnormality occurs in the equipment, the power supply to the main components will be cut off and an alarm signal will be issued at the same time;

8.2.Measurement data collection: PT100 platinum resistor;

8.3.Other actuating devices: French "Schneider" AC contactors, switches, buttons, Japanese Fuji small relays and other famous brand products;

8.4 Heating tank liquid expansion safety temperature controller 30-150℃;

8.5 Saturated air barrel liquid expansion safety temperature controller 30-150℃;

8.6 One-stage pressure precision adjustment: including air filter;

8.7 Pressure gauge: 2.5kg/cm2 Precision 0.01kg/cm2 IK – 2.5.

9.Safety protection device:

9.1 Automatically cut off the power supply when the water level is low;

9.2 Over-temperature automatic power-off device;

9.3 Sound and light alarm device;

9.4 Saturated barrel over-temperature protection;

9.5 Pure water level sign and lack of alarm.

10．Accessories:

10.1 Measuring cylinder 1 piece;

10.2 Standard 80c㎡ salt spray collection device 2 sets;

10.3 No crystallized glass nozzle 1 piece;

10.4 Wet bulb cup 1 piece;

10.5 Rapid mist exhaust system 1 set;

10.6 Sodium chloride (NaCl) 500g, 6 bottles;

10.7 Test strips 1 box.

11.Use Conditions:

11.1 Power supply: AC380V 50Hz (three-phase four-wire): the allowable fluctuation range of voltage is AC (380±38) V; the allowable fluctuation range of frequency is (50±0.5)Hz;

11.2 Usage environment: Allowable operating temperature range: 0℃ - 30℃; Performance guarantee range: + 5℃ ~ + 20℃; Relative humidity: ≤90%RH;

11.3 Air source: 0.4MPa;

11.4 Site: The ground is flat and well ventilated; appropriate space for use and maintenance is allowed.

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