Salt spray test chamber

Product introduction of the salt spray test chamber

The salt spray test chamber is one of the "three defenses" (humid heat, salt spray, mold) test equipment for artificial climate environments. Important test equipment.

The salt spray corrosion test chamber can be used for neutral salt spray test according to GB/T2423.17 " Basic Environmental Test Procedures for Electronic and Electrical Products Test Ka: Salt Spray Test Method", and also for acetate salt spray test.

The salt spray test chamber tester is used to test the corrosion resistance of various material surface treatments, including coatings, electroplating, organic and inorganic films, anodizing, anti-rust oil, and other anti-corrosion treatments, so as to establish the quality of the products.

Salt spray test chamber structures

The salt spray test chabmer adopts a light gray impact-resistant PVC board, and the durable temperature is 85 ℃. (Taiwan Nanya brand). The edge is surrounded by three-dimensional reinforcement with a thickness of 10mm, and the structure is firm.

The test chamber cover is sealed with PVC impact-resistant plate, which will not be distorted when used at high temperatures. The inner and outer layers of the edge are thickened to prevent distortion due to long-term high temperatures. Thickness 15mm

If the customer does not require a button-type control panel, you can also choose a touch-screen control system

The sample placement table is made of a temperature-resistant ABS board, which has a strong bearing capacity.

The test sample rack adopts a plane indexing type, and the angle can be adjusted arbitrarily.

The fog is uniform on all sides, the fog is completely consistent, the test results are accurate, and the number of test samples is large. (Can be customized according to customer product requirements)

The testing machine is equipped with a Foma wheel, which is convenient to move.

The water tank has water shortage protection, which can remind customers to replenish the water source at any time.

The box body has overheat protection, in case of setting high-temperature value, it will automatically power off to prevent spontaneous combustion.

Front function of the salt spray test chamber

1. The secondary pressure regulating valve, the displayed value is the pressure of the nozzle and the pressure barrel. It is necessary to adjust the pressure and display the pressure value in the spray state.

2. Intelligent touch screen controller

3. the box cover, do not open the working state

4. Pneumatic struts (type 60 and 90 have no pneumatic struts, type 120 has pneumatic struts, and models 160 and above use the cylinder to open the box cover)

5. Graduated cylinder (used to display the amount of salt spray deposition)

6. Salt spray collection funnel

7. Spray tower (salt mist is atomized from this)

Back function of the salt spray test chamber

1. Laboratory water discharge valve (wastewater will be discharged after the test is completed)

2. Salt water drain valve (used to discharge cleaning or excess salt water; some models of salt water drain are located beside the inner side wall of the test chamber; the salt spray outlet of Type 60 salt spray tester is located in the salt water tank below the spray tower, remove the silicone plug drain brine)

3. Box cover

4. Primary pressure regulating valve (this valve is an intake pressure regulating valve, and the pressure is adjusted to 0.2KPa during normal test)

2. Manual water inlet valve for pressure tank

3. Salt water storage box (the whole salt spray tester only needs to add salt water here)

Standard parameters that NOKI produce

Salt spray test chamber heating system

The direct heating method is adopted, the heating speed is fast, and the standby time is reduced. When the temperature reaches the ON/OFF switch, the temperature is accurate and the power consumption is low.

The heating of the box is the inner tank water tank heating method, the temperature rises quickly, and the temperature and humidity are evenly distributed.

The air saturator is heated by a titanium alloy high-speed heating electric heating tube.

The temperature rises quickly, and the compressed air can be quickly transferred to a suitable temperature. After filtering to remove impurities, it can be kept moist to a certain extent.

The solution is easily drawn out and diffuses in the entire laboratory in the form of a mist.

The sedimentation amount can be adjusted to the standard by adjusting the height of the spray tower apex and the size of the spray pressure.

Salt spray test chamber water supply system

Two automatic and manual water adding systems are used to automatically or manually replenish the water level of the pressure tank and the laboratory to prevent water shortage and ultra-high temperature from damaging the instrument

Salt spray corrosion test chamber spray system

Using Bernut's principle to absorb salt water and then atomize, the degree of atomization is uniform, and there is no phenomenon of blocking crystallization, which can ensure the standard of continuous testing

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

The spray volume is adjustable from 1 to 2ml/h (the standard of ml/80cm2/h requires testing for 16 hours to obtain the average volume).

The measuring cylinder adopts the embedded installation, the appearance is beautiful and neat, the observation is convenient, and the installation space of the instrument is reduced.

Spray method: continuous spray

Mist removal system

During the test process and when the machine is shut down, remove the salt mist in the test chamber to prevent the corrosive gas from flowing out and damaging other precision instruments in the laboratory.

Air supply system

The first section is roughly adjusted to 2Kg/cm2. The inlet air filter has a drainage function

The second stage is the precision adjustment 1Kg/cm2.1/4 pressure gauge, showing precise and accurate

Salt spray corrosion test chamber air supply system

The air pressure is 1Kg/cm and can be adjusted in two stages to ensure the spray pressure is stable and reliable.

The first section is roughly adjusted to 2Kg/cm, using an imported air filter with a drainage function.

The second stage is the precision adjustment of 1Kg/cm, which shows the precision and accuracy.

Corrosion Salt Spray test chamber control system

Both the laboratory and the pressure barrel use a touch-screen programmable controller, which has the function of microcomputer automatic calculation, and the control error is ±1.0 °C (Japan Huibang 2).

The circuit board is treated with moisture-proof and anti-corrosion treatment, with high precision and long service life

Laboratory heating tank adopts liquid expansion safety temperature controller 0～120℃ (1 Italian EGO)

LCD digital display time controller, power failure memory function 0.1S ~ 999hr (Japan OMRON 1)

Accumulator 0～99999h (1 Italian VEMER)

Relay (Japan OMRON 1 group)

Rocker with light switch can work 25000 times continuously

Equipment safety protection device

When the water level is low, the power supply is automatically cut off, and the safety warning light device lights up.

When the temperature is too high, the power supply of the heater will be automatically cut off, and the safety warning light device will light up.

When the water level of the reagent (saltwater) is low, the safety warning light device will light up and give an alarm.

Leakage protection function to prevent personal injury and instrument failure caused by line leakage or short circuit

Salt spray corrosion test method

NSS

1. To prepare a sodium chloride solution, add 500g of sodium chloride per 9.5L of distilled water (or purified water), that is, 50g/L±5g/L, and stir until the sodium chloride is completely dissolved;

2. Measure the pH value of the sodium chloride solution with an acidity meter, so that it is between 6.4-7.0 (the pH value of the spray solution collected during the test is between 6.5-7.2), usually distilled water or pure water is used.

Water can directly dissolve sodium chloride without adjusting the pH value. The pH value can be adjusted by sodium hydroxide and glacial acetic acid.

A small amount of sodium hydroxide or glacial acetic acid can make a significant change in the pH value of the solution: sodium hydroxide makes the pH number number, and glacial acetic acid lowers the pH value.

AASS

1. Prepare sodium chloride solution with the same concentration as neutral salt spray tester NSS;

2. Add a small amount of glacial acetic acid (±50g) to sodium chloride, stir well, and measure the pH value of the solution with an acid meter until it is between 3.0-3.1 (the pH value of the spray solution collected during use is 3.1-3.3 between)

CASS

1. Prepare sodium chloride solution with the same concentration as neutral salt spray tester NSS;

2. Add copper chloride to the sodium hydroxide solution, and its concentration is 0.26g/L±0.02g/L (ie 0.205g/L±0.015g/L anhydrous copper oxide)

3. Stir until the sodium chloride and cupric chloride are completely dissolved;

4. Add a small amount of glacial acetic acid (±50g) to the sodium chloride, stir evenly, and measure the pH value of the solution with a pH meter until it is between 3.0-3.1 (the pH value of the spray solution collected during use is 3.1-3.3 between).

Salt spray test chamber standard

GB/T 2423.17-1993 Salt spray test

GB/T 2423.18-2000 Salt spray test

GB/T 10125-1997 Salt spray test

ASTM.B117-97 Salt spray test

JIS H8502 Salt spray test

IEC68-2-11 Salt spray test

IEC68-2-52 1996 Salt spray test

GB.10587-89 Salt spray test

CNS.4158 Salt spray test

CNS.4159 CASS accelerated copper acetate salt spray test

GB/T 12967.3-91 CASS accelerated copper acetate salt spray test

The standard configuration

Power supply

AC220V 50HZ Single-phase three-wire system, single-phase 220V