Precautions for using a multi zone rotating electric furnace for experiments

The multi temperature zone rotating electric furnace used in experiments is widely used in experimental scenarios such as material synthesis, heat treatment, catalytic reactions, etc. due to its independent temperature control and rotating heating characteristics in multiple temperature zones. To ensure experimental safety and accuracy of results, the following precautions should be taken when using:

1. Preparation before operation
Equipment inspection:
Check whether the appearance of the furnace body is intact, without cracks, deformations or damages.
Confirm that the power cord, plug, and socket are not damaged, and the grounding wire connection is reliable.
Check whether the temperature controller, vacuum gauge (if equipped), gas flow meter and other instruments display normally.
Confirm that the rotating mechanism operates smoothly without any jamming or abnormal noise.
Environmental requirements:
Electric furnaces should be placed in a dry, ventilated, and non corrosive gas environment, away from flammable and explosive materials.
Ensure that the workbench is flat and there is sufficient heat dissipation space around the electric furnace.
Sample preparation:
Select suitable sample containers such as crucibles, boats, etc. according to experimental requirements, and ensure that their high temperature resistance meets the requirements.
The sample size should not be too large to avoid blocking the heating element or affecting the operation of the rotating mechanism.
For volatile or toxic samples, sealing or ventilation measures should be taken.

2. Precautions during operation
Temperature control:
Strictly follow the experimental requirements to set the temperature program, avoiding sudden temperature fluctuations that may cause sample breakage or furnace damage.
The multi zone electric furnace needs to set the temperature of each zone separately to ensure that the temperature gradient meets the experimental requirements.
Regularly calibrate the temperature controller to ensure accurate temperature display.
Rotating mechanism usage:
Before starting the rotating mechanism, ensure that the sample is securely placed to prevent it from falling off or colliding with the furnace wall during the rotation process.
Adjust the rotation speed according to experimental requirements to avoid affecting the uniformity of heating if it is too fast or too slow.
During the operation of the rotating mechanism, it is forbidden to open the furnace door or touch the rotating parts.
Vacuum and atmosphere control:
If vacuuming is required, first check the sealing of the vacuum system to ensure that there is no air leakage.
During the vacuuming process, closely observe the reading of the vacuum gauge to avoid deformation or damage to the furnace body caused by excessive vacuum.
When introducing gas, the vacuum pump should be turned off first, and then the gas valve should be slowly opened to avoid damage to the furnace body or sample caused by airflow impact.
The gas flow rate needs to be adjusted according to experimental requirements to avoid excessive or insufficient influence on experimental results.
Heating process monitoring:
During the heating process, regularly observe the situation inside the furnace to ensure that the sample is heated evenly and there is no local overheating or combustion phenomenon.
If any abnormal situation is found (such as odor, smoke, abnormal noise, etc.), the heating should be stopped immediately and the cause should be checked.

3. Post operation maintenance
Shutdown sequence:
After the experiment, turn off the heating power first, and wait for the furnace temperature to drop to a safe range (generally below 200 ℃) before turning off the rotating mechanism and vacuum pump (if equipped).
Finally, close the gas valve and the main power supply, and unplug the power plug.
Furnace cleaning:
After the furnace body cools down, open the furnace door and use a soft cloth or brush to remove any residue inside the furnace, avoiding scratching the furnace wall with hard objects.
For stubborn stains, specialized cleaning agents can be used for cleaning, but it is necessary to ensure that the cleaning agent does not corrode the furnace material.
Equipment maintenance:
Regularly check the wear of heating elements, temperature sensors, rotating mechanisms, and other components, and replace them if necessary.
Check whether the vacuum system seals (such as O-rings and flange gaskets) are aging and replace them in a timely manner to ensure airtightness.
Lubricate and maintain the rotating mechanism to ensure smooth operation.
Recording and archiving:
Record parameters such as temperature, time, gas flow rate, and equipment operation during the experimental process.
Detailed records of equipment malfunctions, maintenance situations, etc., to provide reference for subsequent maintenance.

4. Security protection
Personal protection:
Wear personal protective equipment such as protective goggles, lab coats, and heat-resistant gloves during operation.
Avoid direct contact with high-temperature furnace bodies or samples to prevent burns.
Emergency Management:
Familiarize yourself with the location of the emergency stop button on the equipment, and immediately press it to stop heating and rotation in case of an emergency.
Equip fire extinguishers and other firefighting equipment, and regularly check their effectiveness.
Training and operational standards:
Operators need to undergo professional training, familiarize themselves with equipment performance, operating methods, and safety precautions.
Develop detailed operating procedures and strictly implement them.