Precautions for using tube furnaces in university laboratories

When using tube furnaces in university laboratories, a series of precautions must be strictly followed to ensure the safety and effectiveness of the experiments. The following are detailed usage precautions:

1、 Preparation before use
CHECK DEVICE STATUS
Ensure that all components of the tube furnace, such as the furnace chamber, furnace tubes, heating elements, temperature control system, etc., are intact and free from cracks, deformation, or damage.
Check if the power cord, plug, and power switch are functioning properly, ensuring that there are no damaged or exposed wires.
Confirm that the interior of the furnace is clean and free of debris to avoid affecting the heating effect and experimental accuracy.
Understand the operating procedures
Before use, it is necessary to fully understand the operating procedures and safety precautions of the tube furnace to ensure that the correct steps are followed.
Set reasonable parameters such as heating temperature, heating rate, and holding time to avoid adverse effects of excessively high or low temperatures on the experiment.
Prepare experimental materials
Place the experimental materials in a suitable container, avoiding direct contact with the furnace or furnace tubes to prevent contamination or damage.
According to the experimental requirements, prepare the required atmospheric gases (such as nitrogen, argon, hydrogen, etc.) and ensure a stable gas supply.
2、 Precautions during use
safe operation
During the operation, it is necessary to wear the prescribed protective equipment, such as heat-resistant gloves, protective goggles, etc., to prevent burns or other injuries.
Smoking, open flames, or other dangerous operations are strictly prohibited around the operation of tube furnaces and gas storage tanks.
Operators are not allowed to leave the heating equipment usage site and should closely monitor the operation status and experimental progress of the equipment.
temperature control
Strictly control the furnace temperature and do not exceed the maximum limit temperature of the tube furnace to avoid damaging the heating elements and lining.
During the heating process, the temperature should be slowly increased to avoid rapid heating rates that may cause severe material reactions or equipment damage.
During the cooling process, it is also necessary to follow the predetermined cooling procedure to avoid adverse effects on the material caused by rapid cooling.
atmosphere control
If the experiment needs to be conducted in a specific atmosphere, it is necessary to ensure a stable supply of atmosphere gas and adjust the atmosphere pressure and flow rate according to the experimental requirements.
When used in a ventilated state, the airflow size should be adjusted at all times to maintain stability, and anti backflow suction devices and exhaust gas collection devices should be installed to prevent gas leakage or pollution of the laboratory environment.
Sample processing
When taking and placing samples, the power supply of the tube furnace should be turned off first, and the furnace temperature should be ensured to drop to a safe range before operation to prevent burns or damage to the samples.
Use clean crucibles or containers to hold samples and avoid sample contamination of the furnace or furnace tubes.
3、 Handling after use
EQUIP COOLING
After the experiment, the tube furnace should be cooled according to the predetermined cooling program to avoid rapid cooling and damage to the equipment.
After the equipment has completely cooled down, open the furnace door to take out the sample and proceed with the subsequent sample processing work.
Equipment cleaning and maintenance
Regularly clean and maintain the tube furnace, including cleaning impurities inside the furnace, checking the working status of heating elements and temperature control systems, etc.
If any malfunction or damage is found in the equipment, professional maintenance personnel should be contacted in a timely manner for inspection and repair.
4、 Other precautions
Avoid overloading during use
It is strictly prohibited to put too many or too large samples into a tube furnace for heating treatment, in order to avoid exceeding the equipment’s carrying capacity and causing damage.
Keep good usage records
After each use of the tube furnace, detailed records of experimental conditions, sample information, experimental results, and equipment usage should be kept for subsequent analysis and summary.
Comply with laboratory rules and regulations
When using a tube furnace, strict adherence to laboratory regulations and safety operating procedures should be followed to ensure the safety and effectiveness of the experiment.
In short, when using tube furnaces in university laboratories, the above precautions must be strictly followed to ensure the safety and effectiveness of the experiment. At the same time, regular cleaning and maintenance work should be carried out on the equipment to extend its service life and maintain its good working condition.