The Thermal Shock Test Chamber, or thermal shock testing machine, is vital for many industries. These include metal, plastic, rubber, and electronics. It tests materials and composites by exposing them to quick shifts in temperature, both hot and cold. This test finds chemical changes or physical damage from thermal expansion and contraction in a short time.
The composition and structure of the thermal shock test chamber
1. Box outer wall material: 1.5mm thick, high-quality cold-rolled steel plate. The surface has a plastic spray treatment. Product appearance can be customized. Users should provide a color card or color number to ChiuVention.
2. Box inner wall material: SUS304 stainless steel, 1.0mm thick. All weld seams use TIG continuous full welding. After welding, we do a pressurized water test. This checks for condensation, drips, mildew, rust, or corrosion.
-
Insulation materials:
-
100mm thick polyurethane foam
-
Ultra-fine glass wool
-
-
Flame retardant and fireproof
-
Offers excellent thermal insulation performance.
3. Sample Rack: This is a static stainless steel sample rack. It has cable threading holes in the middle. The sample rack’s diameter is 50 mm.
4. Observation Window: There is a 4-layer vacuum self-heating glass window in the door’s center. It features an electrothermal coating for moisture insulation. This coating also prevents frost, fog, and condensation. These functions ensure clear visibility of the thermal shock machine samples during testing.
The main core components of the thermal shock test chamber
1. Compressor: The compressor keeps the right cooling rate and temperature in the thermal shock testing machine. It uses a semi-closed compressor made of a binary duplex air-cooled refrigeration system. The binary duplex system features two refrigeration cycles. One works for high temperatures, and the other for low temperatures. It has a two-stage system. This system transfers heat energy from the working chamber to cool it down.
2. Controller: The control system works like the human brain. It sends all the instructions. We can control the compressor’s running time by detecting the temperature of the refrigerator or freezer. This helps maintain the right temperature for cooling and freezing.
3. Evaporator: The evaporator works with the compressor to cool. ChiuVention picks a durable, temperature-resistant evaporator brand for better equipment stability.
4. Condenser: The condenser and compressor, along with the evaporator, make a full cooling system of the thermal shock chamber. The condenser cools the compressor. If the condenser is good or bad, it directly affects cooling and the compressor’s lifespan.
The energy-saving features of the thermal shock test chamber
1. High-density polyurethane foam insulation material to ensure that the heat loss is minimized.
2. The plastic spraying treatment protects the thermal shock machine. It ensures long-lasting anti-corrosion and keeps its appearance fresh.
3. High strength and reliability in the structural design ensure the shock chamber’s dependability.
The studio material is stainless steel. It resists corrosion and handles hot and cold fatigue well. This ensures a long service life.
The thermal shock chamber can do standard high and low temperature tests. It can also perform temperature shock tests.
6. Large electric heating frost-proof observation window with built-in lighting offers great visibility.
7. The high-strength, temperature-resistant silicone rubber sealing strip keeps the thermal shock machine door sealed tightly.
8. Optional features, such as test holes, recorders, and test cables, help users meet different functions and thermal shock testing needs.
9. Use an environmentally friendly refrigerant. This helps the thermal shock test chamber meet your environmental protection needs.
The cooling principle of the thermal shock test chamber
To quickly show how test items perform in hot and cold environments, we simulate temperature changes over a short period. Fans will blow air at different temperatures onto the test article. They will switch between high and low temperatures each time. This method is known as a thermal shock test. The hot and cold shock tester has adjustable temperatures. The low temperature zone ranges from -70℃ to room temperature (RT). The high temperature zone can be set from room temperature (RT) to 200℃. The high-temperature zone takes about 35 minutes to rise from room temperature to its peak. In contrast, the low-temperature zone requires 55 minutes to drop from room temperature to low temperature. And when doing thermal shock test, the number of impacts is up to 9999 times, each time the temperature shock time is up to 999 hours.
The temperature impact of the thermal shock test chamber has two main ways
1. Two-box temperature impact (gaseous impact or air-to-air thermal shock chamber): The device has two boxes—one for high temperature and one for low temperature. The sample sits in a basket. As the basket moves between these zones, it experiences heat and cold effects.
2. Two-Box Temperature Shock (Liquid Shock or liquid thermal shock chamber): This device has two boxes: one for high temperature and one for low temperature. Silicone oil fills both zones. The sample sits in a basket and moves through the high temperature zone and then the low temperature zone. This process creates a hot and cold shock effect.
The maintenance of the thermal shock test chamber
We can’t just focus on using the thermal shock machine. We must also maintain and repair it on a regular basis. This way, we ensure long-term stability for our services. The thermal shock test chamber is a precision test instrument. It should follow operational guidelines and require regular maintenance. So, what maintenance team will perform in the equipment box? Take a look ~.
1. Regularly maintain the refrigeration unit’s radiator (condenser) to keep it clean. Dirt on the condenser can cause the compressor’s high-pressure switch to jump. This may lead to false alarms. The condenser should be maintained regularly every month. You can clean the dirt on the condenser cooling network in two ways. First, turn on the power and use a hard bristle brush to scrub it. Second, you can blow off the dirt with a high-pressure air nozzle.
The refrigeration system is the heart of the cold thermal shock test chamber. Check it every six months for snow leaks. Also, inspect the flare joints and welded ports for oil leaks. If you find any issues, address them quickly or contact a professional.
High current contacts on the distribution board:
-
Clean and maintain the distribution room at least once a year.
-
Loose contacts can create dangerous conditions.
-
Lights may burn parts, and heavy issues can cause fires.
-
This can lead to alarms and personal injuries.
When cleaning, use the vacuum cleaner to remove indoor dust.
Clean the distribution room at least once a year. Use a vacuum cleaner to remove dust. Clean the outer surface of the shell more than once a year. You can wipe it with soapy water.
2. Do not adjust the two over-temperature protection devices in the distribution box. They are set at the factory. The protection switch is already adjusted.
for the protection of air-fired pipe and heat pipe alarm, set the temperature set point +20 ℃ ~ 30 ℃.
3. After the thermal shock testing, turn off the power supply. Staff must wear moisture-proof, anti-electricity, and high-temperature gloves to handle the product.
Seven cold and heat shock test chambers are required on the site.
4. The environmental requirements include no strong vibrations or electromagnetic fields. Avoid high dust levels and any flammable, explosive, volatile, or corrosive substances. Keep away from direct sunlight and other heat sources. This is quite important.
-
Ensure the environment meets these conditions:
-
Ambient temperature: 5 ℃ to 28 ℃
-
Relative humidity: ≤ 85% RH
-
Atmospheric pressure: 86 to 106 kPa
-
-
Maintain the same environmental conditions:
-
Ambient temperature: 5 ℃ to 28 ℃
-
Relative humidity: ≤ 85% RH
-
Atmospheric pressure: 86 to 106 kPa
-
The thermal shock machine will create heat while in operation. So, leave a space of 50 to 80 cm around it. This allows engineers to perform maintenance easily.
5. Discharge water interfaces work well for overflow from gutters and pipes.
Ground requirements:
-
The cold and heat shock tester must be placed horizontally.
-
It should be in a well-ventilated thermal shock test chamber.
-
Ensure at least 1.5 meters of space around it for operation and maintenance.
The products that cannot be tested by the thermal shock chamber
Ethane, oxidized alkenes, acetone, benzene, and methyl ethyl ketone can ignite at -30 ℃ or lower.
Gasoline, propylene oxide, carbon disulfide, and more have a flash point under -30 ℃.
Kerosene, light oil, isopentyl alcohol, acetic acid, and other substances have flash points from 30 ℃ to 65 ℃.
For more information about thermal shock test chambers or thermal shock chamber prices, please contact us :
WhatsApp: +86 180 2511 4082
Tel: +86 769 2329 4842
Fax: +86 769 2329 4860
Email: [email protected]