ASTM Salt Spray Test Chamber Corrosion Resistance Test Machine for Laboratory

1.1. Model

ZH-SH-60

ZH-SH-90

ZH-SH-120

ZH-SH-160

1.2. Inner size  (cm)

 (W x D x H)

 60 x 45 x 40

90 x 60 x 50

120 x 100 x 50

160 x 100 x 60

1.3. Volume

108 L

270 L

600 L / 480 L

960 L

1.4. External size (cm) appr. (W x D x H)

105 x 70 x 95

140 x 85 x 110

203 x 125 x 130

243 x 125 x 140

1.5. Case opening method

Manual

Manual

Automatic by cylinder

Automatic by cylinder

1.6. Power

1.5 KW

2.5 KW

4.5 KW

4.5 KW

1.7. Quantity of sample storage rack

4 pieces

6 pieces

10 pieces

12 pieces

1.8. Quantity of sample storage rod

6 pieces

12 pieces

10 pieces

12 pieces

1.9. Power source

220V, 1ph, 50/60Hz

2. Performance

2.1. Test room temperature

RT+5℃~50℃

2.2. Saturation bucket temperature

RT+5℃~63℃

2.3. Temperature  uniformity

±1℃

2.4. Temperature Fluctuation

±0.5℃

2.5. Salt deposition amount

1～2ml/h.80cm²

2.6. Spray pressure

0.7~1.2±0.01kgf/cm²

2.7. Spray mode

Continuous spray + intermittent spray

3. Reference standards

u GB/T 2423.17 Basic test procedures for electric and electronic products Ka"- salt spray test methods;

u GB/T 10125 Corrosion tests in artificial atmospheres – salt spray tests;

u ASTM B368 Test Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test);

u JIS Z2371-2000 Methods of salt spray testing etc.

u ISO 9227 Corrosion tests in artificial atmospheres 

u ASTM B117-18 Standard Practice for Operating Salt Spray (Fog) Apparatus 

u GB/T5170.8-2008 and equivalent standards such as IECMILDIN and ASTM

u GB5938-86 "Corrosion resistance test method for metal coatings and chemical treatment layers of light industrial products"

u GB/T1771-91 "Determination of neutral salt spray resistance of paints and varnishes". etc..

4. Structure and Material

4.1. Material of chamber

The inner and outer boxes are made of A-grade PVC polypropylene board with a thickness of 8mm, which is resistant to acid, alkali

4.2. Sealing cover

A-grade PVC polypropylene board, thickness 6mm, surround reinforcement 10mm, acid and alkali resistant. The lid is designed with an optimal top angle of 106 degrees to prevent condensation water generated during the test from dripping onto the sample and affecting the test results.

4.3. Saline water tank

The saline water is added in a concealed way. The increased saline water tank design can meet the requirement of continuous spray for 3 days. After the saline water is prepared, it is injected from the test drug inlet and then flows into the saline water tank without opening the cover. At the same time, the water level of the saline water can be observed on the side, which is easy to clean and not easy to crack

4.4. Sample shelves

The sample frame adopts a flat indexing frame, with optional placement angles of 15 degrees and 30 degrees. The direction of falling and receiving fog on all four sides is completely consistent

4.5. Saturated tank

Cylindrical high-pressure 304# stainless steel, The elevated design offers greater capacity, featuring temperature resistance, anti-corrosion properties, and rust resistance for extended service life. Compressed air passes through an air saturation generator, where it fully exchanges and filters with distilled water, achieving a saturated vapor state to obtain moist and clean compressed air. By adjusting the temperature of the air saturation generator, thermal balance is ensured.

5. Test type

5.1. NSS, AASS

Temp. inside chamber: 35 ℃ ± 1 ℃

Pressure air bucket: 47 ℃ ± 1 ℃

5.2. CASS (other models)

Temp. inside chamber: 50 ° C ± 1 ° C

Pressure air bucket: 63 ℃ ± 1 ℃

6. Air source supply

The air pressure is adjusted in two stages from 0.7 to 1kg/cm ²

The first adjustment is to use a 2kg/cm ² intake air filter with drainage function; The second adjustment is 1kg/cm ²

7. Spray method

(1) Adopting the Bernoulli principle to absorb saltwater and then atomize it uniformly without any blockage or crystallization, ensuring continuous testing and intermittent standards;

(2) Nozzle: It is made of quartz glass. The spray water supply pipe is equipped with a brine filter, which can last for 4000 hours and ensure that there is no blockage of crystal salt;

(3) Adjustment of spray amount: use 50ML glass to collect two measuring cups, which is convenient for embedded installation and observation, and the salt spray settling amount meets the national standard requirements of 1~2ml/80cm ²/h (average value in 16 hours).

8. Heating system

The heating method employs steam, with the heating tube made of titanium alloy, resistant to strong acids and alkalis, ensuring a long service life and rapid heating. This reduces standby time. The machine features a heating tube maintenance access port at the rear for easy maintenance and replacement. The heating tube has a service life of over 5 years

9. Control system

9.1. Temperature control & Temperature sensor

A. The test chamber adopts branded temperature control meter, with a temperature control range of 0-99.9 ℃. The digital display type has P.I.D automatic calculation and uses K-type thermocouple sensors with a temperature resolution of 0.1 ℃

B. The pressure air tank adopts branded temperature control meter, with a temperature control range of 0-99.9 ℃. The digital display type has P.I.D automatic calculation and uses K-type thermocouple sensor with a temperature resolution of 0.1 ℃

9.2. Over Temperature sensor

A. The test room adopts over temperature protector, which automatically shuts down and stops working in case of over temperature

B. The saturation tank adopts over temperature protector, which automatically shuts down and stops working in case of over temperature

9.3. Timer

A. The time controller displays a time control of 0.1s to 9999hr, with a power-off memory function. In the event of a power outage, the testing time does not need to be reset and will continue to run after being powered on again

B. The dual timing time controller displays the time 0.1s~99hr, which can realize the intermittent spray function

9.4. Spray & Defog SSR

The service life of spray and demisting solenoid valve can reach more than 5 years. Press the spray switch to start spray. After the test, press the demisting switch to remove the fog in the laboratory before taking out the product for observation

9.5. One in two out water replenishment solenoid valve

A. Simply install a supply pipe to achieve bi-directional automatic water replenishment for the laboratory and pressure tank, without the need for manual water replenishment. If the laboratory site is inconvenient for automatic water replenishment, manual water replenishment can be selected.

B. Illuminated rocker press button switch, the press button life can reach more than 100000 times, the program switch can switch the spray mode, continuous spray and intermittent spray can be freely switched.

9.6. Sealing method

The lid is sealed with water, and the sink is manually filled to prevent salt spray leakage;