Principle and installation of salt spray corrosion test chamber

The salt spray test chamber is a test machine for corrosiveness testing of related materials and articles under the condition of artificial simulation of natural environment. The artificial simulation of salt spray environment test is the use of a certain volume of space of the test equipment (salt spray test chamber), in the volume of space by artificial simulation method, to create a salt spray environment to assess the salt spray corrosion resistance of the product. So what are the standard conditions that must be met for the salt spray test chamber to pass the inspection?

1. Requirements for appearance: 1. The materials in the test chamber that are in direct contact with the salt water solution and salt spray should not have a chemical reaction with the salt water solution and salt spray, and the parts that are not in direct contact should be resistant to salt spray corrosion. 2. Salt spray should not be sprayed directly onto the test sample.

3. The droplets on the top and inner wall of the box should not drip in the studio. 4. Pressure balance fog exhaust pipe...

The salt spray corrosion test chamber can assess the ability of salt spray corrosion of materials and their protective layers, as well as the comparison of the process quality of similar protective layers, and at the same time, the ability of some products to resist salt spray corrosion can be assessed; This product is used for salt spray corrosion testing of components, electronic components, protective coatings of metal materials, and industrial products.

Salt spray test chamber installation requirements:

1.There is room for proper use and maintenance around the area.

A: Not less than 60cm

B: not less than 60cm

C: Not less than 120cm

Note: (The tilt angle of the device cannot exceed 45).

2.Environmental conditions:

Temperature: 5 28 (average temperature over 24 hours: 28) Relative humidity: 85%RH

Air pressure: 86kpa 106kpa

Commonly used models for salt spray test chamberslrhs-108-ry

lrhs-270-ry

lrhs-412-ry

lrhs-663-ry

lrhs-1080-ry

The salt spray test chamber meets the standardGB Basic Regulations Test for Electrical and Electronic Products KA ", Salt Spray Test Methods and GB T10125-1997, GB T10587-2006, and equivalent IEC, MIL, DIN, ASTM and other related standards.

Hello, 1. The salt spray test chamber is about 50cm away from the wall after it is placed, and there is no strong vibration and no corrosive substances around. The left and right sides should properly reserve the maintenance space, because the equipment itself is corrosion test equipment, so as to avoid affecting the surrounding equipment.

2. Before the power cord of the machine is connected to the main power cord, please add a non-fuse switch or a knife switch for the independent use of this equipment.

3. The mist exhaust pipe can be extended to the outdoor discharge with PVC hard pipe, and it should be noted that when installing the mist exhaust pipe, it should be tilted straight down from the height of the barrel mouth.

4. When the machine is installed, direct sunlight should be avoided so as not to affect the test conditions. With relatives.

5. The installation location should be as far as possible not close to other equipment or flammable materials, so as to avoid the danger of bending.

The salt spray test chamber is made of PP reinforced rigid plastic plate with good corrosion resistance, high strength, anti-aging and high temperature resistance. Neutral salt spray test and acetate spray test, box temperature 35, saturated barrel temperature 47, if customers need to carry out CASS test, box temperature 50, saturated barrel temperature 63. The above are the precautions for the installation of the standard box, if you have special requirements, please contact the staff.

1.The distance between the installation and the adjacent wall or utensils should be 300mm, and in order to give full play to the performance of the equipment stably, it is best to install it in an environment with suitable temperature and humidity, and the temperature should not change sharply;

2.It is necessary to pay attention to the power supply capacity of the salt spray test chamber, and do not use one power supply at the same time for the equipment of Duosen Hunger, so as not to produce a voltage drop and affect the performance of the machine;

3.It is necessary to ensure that the shell of the salt spray test chamber is effectively grounded, and there is no open circuit or leakage of power supply lines and electrical appliances, so as to avoid accidents caused by Bichun;

4.The salt spray test chamber should be installed in a place without direct sunlight, good ventilation, less dust, and away from combustibles, high-temperature heating sources, and close to the power supply;

5.Do not remove the top cover at will, disturb or change the line, if there is a major regret problem, it is best to ask a professional technical engineer to repair it.

The above five points are the aspects that need to be paid attention to when installing the salt spray test chamber, so it is necessary to ensure the safety and prudence of the equipment and implement it in accordance with various performance indicators.

1.Connect the drain pipe to the exhaust pipe.

2.The water inlet is connected to the water pipe, and the other end is to the faucet (the water filling faucet is normally open), and the machine adopts an automatic water filling device, so it must be connected to the water pipe, otherwise it can not operate normally.

3.Please connect the power cord to the power supply at the rear of the machine and connect the air pipe.

4.Add water to the isolation sink to the backing plate (using the water sealing principle to prevent salt spray from leaking).

5.Prepare the test solution. Modulation Method:

a. Liter Qiaoyin liter of pure distilled water, and test whether its pH value is between to. b. If the pH value is greater than that, add a little glacial acetic acid. c. If the pH value is less than that, add a little sodium hydroxide.

The above b, c generally use pure water and do not need to be measured). d. Add 500g of sodium chloride (NaC1) and stir well.

6.The saline is poured into the saline refill bottle, which is automatically filled with saline and close to the preheating tank in the laboratory. Use the liquid to flow to the brine preheating tank, 15 litres for the economy type and 30 litres for the standard type.

7.Add water to the wet bulb cup, cover the wet bulb thermometer with a sand cloth, and place the end of the sand cloth in the wet gauge cup.

8. Place the specimen or specimen on the shelf. The placement angle is placed according to the required standards, such as the standard test piece 13070 (mm) can be used at 15 degrees and 30 degrees obliquely.

1.Please connect the power supply of the salt spray box and the power supply of the air compressor first, and connect the air compressor and air pipe.

2.Add purified or distilled water to the water inlet inside and behind the box until the low water level light on the panel goes out, otherwise it will not function properly.

3.The connection between the drain pipe and the exhaust pipe is completed, as shown on the previous page, and the indicator is open to the left.

4.Add water to the insulation sink to the backing plate to avoid salt spray leakage.

5.The saline is poured into the salt refill bottle, that is, the saline is automatically filled into the spray tower in the laboratory, so that the medicine flows to the salt spray tower.

6.Add water to the wet bulb cup, the wet bulb thermometer is covered with gauze, and the end of the gauze is placed inside the wet bulb cup.

7.Place the specimen or specimen on the shelf: the angle of the specimen is arranged according to the required standard regulations, such as the standard specimen 130 70 (mm) can be placed at 15 degrees and 30 degrees.

8.Set the test temperature: set according to the required standard (button "increase", button "decrease").

10.Press the power supply, operate the button, pre-temperature first, and reach the set temperature. Note: The test cap should be closed and handled carefully to avoid breakage.

11.After the test, turn off each switch in order.

12.If there is any abnormality in the test, please refer to the abnormal function judgment table for processing.

There are four types of inspection methods for the results of salt spray corrosion test chambers: first, the rating determination method, the second is the weighing determination method, and the third is the corrosion presentation determination method; Fourth, corrosion data calculation and analysis method. The rating determination method divides the percentage of the corrosion area and the percentage of the total area into corresponding grades according to a specific method, and uses one grade in between as the basis for determination, which is suitable for measuring plate samples, while the weighing determination method is a method of weighing the quality of the commodity before and after the corrosion test, and verifies the corrosion resistance according to the component before and after the commodity test.

It is very suitable for the corrosion resistance function of the metal, the corrosive presentation method is a qualitative determination method, after the sample is subjected to the salt spray corrosion test, check whether the commodity has a corrosive condition to determine the commodity, it is mainly used to analyze and calculate the corrosion status, rather than specifically for the quality of a specific commodity and to determine.

Artificial acceleration of the imitation of salt spray environment test is the use of equipment with a certain space volume, that is, the salt spray corrosion test chamber, artificially created the salt spray environment for the salt spray corrosion resistance of the sample. Compared with the natural environment, it was found that the salt concentration of sodium chloride was several times or even dozens of times that of the usual natural environment salt spray test, which accelerated the speed of drug corrosion and shortened the time to check the results of the salt spray corrosion resistance of the sample. Corrosion resistance tests on samples under natural exposure may take up to a year, but similar results can be obtained within a day if they are imitated manually.

Performance indicators of salt spray corrosion test chamber:

1. Saline spray test; nss、acss。Laboratory: 35 1. Pressure Air Barrel: 47 1.

2.Temperature uniformity: 2

3.Temperature fluctuation:

4.Sedimentation of salt spray: 1 2ml

5.Spray method: air spray, continuous spray or intermittent spray.

6.Test timing: 1 9999 (s, m, h) can be set and adjustable.

7. Corrosion resistance test: CASS. Laboratory: 50 1. Pressure Air Barrel: 63 1.

Our company specializes in the production and maintenance of environmental test equipment, and we sincerely hope that our customers can trust us!

The salt spray corrosion test chamber has a concentration of salt or acid salt solution, and the material or product is subjected to accelerated salt spray corrosion test by salt water spray at an ambient temperature of 30 degrees, and if the material is reproduced at this time, the product will be damaged within a certain time range. The equipment can be used to assess the salt spray corrosion resistance of materials and protective layers, and the process quality comparison of similar protective layers can be used to assess the salt spray corrosion resistance of certain materials or products. How to place the test samples in the salt spray corrosion test chamber?

The scientific method of placement is:

1. The test samples of the salt spray corrosion test chamber cannot be placed flat under normal circumstances. The requirements of the salt spray standard mention that the test surface of the test sample should be at an angle of 20° to the vertical direction and as far as possible, and the irregular sample (such as the whole workpiece) should also be as close as possible to the above requirements;

2. The test sample is placed in the salt spray test chamber and the test surface is facing up, so that the free sedimentation and deposition generated when the salt spray corrosion test chamber is sprayed on the test surface of the sample, and the salt spray cannot be sprayed directly on the test surface of the sample;

3. The test samples of the salt spray corrosion test chamber can be placed on different horizontal planes in the test chamber, but they shall not touch the chamber, and they shall not contact each other if they are bent high. The distance between the test samples should not affect the free fall of the salt spray on the test surface, and the salt spray droplets gathered on the test samples shall not drip onto other test samples;

4. The sample bracket of the salt spray corrosion test chamber is made of glass, plastic and other materials that are resistant to salt spray and acid and alkali corrosion, and if the specimen needs to be hung on the bracket, the material of the hanging specimen cannot be made of metal, and non-metallic materials such as cotton fiber, artificial fiber or other insulating materials are generally used.

Continuing from the previous part, I will explain the causes and solutions of the salt spray corrosion test chamber to users, hoping to help users troubleshoot and use it simply.

1. Causes of insufficient spray volume of salt spray corrosion test chamber:

1. When the spray regulator is placed too low, turn the spray regulator high;

2. Clean the glass filter when the glass filter in the preheating tank is blocked;

3. When the pressure is set too low, adjust the pressure of the regulator to 1kg per square centimeter, and mark the regulating valve on the air compressor to adjust the pressure to 2kg per square centimeter.

2. When the water level of the machine is insufficient, the alarm light is on, which means that the water level is too low, and it is necessary to check whether the water level in the test chamber or saturated barrel is sufficient.

3. When the air compressor is not running, it can be used as usual because the air compressor itself has a self-supporting function and does not affect the test.

4. When the sink is not running, the operating power supply will be cut off when the water level in the heated sink is too low, as long as the water level in the sink is increased to the normal standard.

5. When the temperature display is faulty or the temperature sensor rod is faulty, you can consult the manufacturer for after-sales debugging and repair.

The simple fault of the salt spray corrosion test chamber has been explained, of course, in the event of a small failure, the user self-maintenance is indeed time-saving and convenient, but if there is no fault that does not belong to the above must contact the manufacturer as soon as possible, do not do it yourself!

The salt spray corrosion test chamber is an experiment simulated by the environment in the corrosion-resistant natural bench environment, which has obvious advantages and significantly reduces the experimental time; The erosion of the natural environment can be manipulated, and the natural environment is highly reproducible; It has saved a lot of human resources, funds, and manpower leakage. Its development trends and marketing promotion are carried out rapidly, and detailed requirements are indicated. This key point regarding the application of salt spray corrosion test chambers cannot be overlooked:

1. After connecting the power supply and the switching power supply, turn on the power switch of the switching power supply.

2. Do not operate the equipment before the salt spray corrosion test chamber is installed.

3. Ensure that the installation is reliable before carrying out the experiment.

4. Before applying the salt spray corrosion test chamber, please carefully read the safety regulations in the instructions for use and the safety marks on the equipment.

5. After the experimental work is completed, when the test chamber is not needed, try to turn off the main electric switch to prevent lightning strikes and other conditions.

6. The salt spray corrosion test chamber must be installed horizontally, otherwise it will cause alarm or unstable operation.

The above is the specific operation method of the salt spray corrosion test chamber, I don't know if you have learned it, and it doesn't matter if you haven't learned, you can contact or consult professionals for consultation, life is like a play, you and I meet, look forward to your consultation.