Daily maintenance of experimental gradient tube furnace

The daily maintenance of experimental gradient tube furnaces is crucial to ensure their normal operation and extend their service life. Here are some key maintenance steps and precautions:

1. Regular cleaning
Shell cleaning: Regularly clean the shell with a clean cloth or vacuum cleaner to prevent dust and dirt accumulation from affecting heat dissipation.
Furnace cleaning: After each use, the furnace and furnace tubes should be cleaned to prevent carbon slag or coking from affecting the next use. When cleaning, physical cleaning methods (such as mechanically crushing carbon slag and blowing it out with high-speed airflow) or chemical cleaning methods (such as breaking down the structure of carbon slag through chemical reactions and bringing it out) can be used.

2. Inspection and maintenance
Heating element: Before use, ensure that the heating element is in good contact, without looseness or damage. Avoid suddenly turning off the power at high temperatures to prevent damage to the heating element.
Temperature control system: Regularly inspect and calibrate the temperature control system to ensure the accuracy and stability of the temperature. You can use thermometers and ammeters for testing, and promptly contact maintenance personnel for repairs if any problems are found.
Ventilation system: Regularly check whether the ventilation ducts are blocked and ensure that the ventilation outlets are unobstructed. At the same time, clean and replace the filter screen to prevent dust and particulate matter from entering the experimental furnace.
Electrical connection: Regularly check whether the various terminals of the equipment and controller are in good contact, whether the pointer movement of the indicator is stuck, and use a potential difference meter to check whether the scale error of the indicator is too large.

3. Proper use and storage
Usage environment: Ensure that the tube furnace is used under suitable environmental conditions, such as indoor use, ambient temperature of -10~40 ℃, altitude not exceeding 1000 meters, relative humidity not exceeding 85% RH, etc. Meanwhile, avoid using in environments with conductive dust, flammable and explosive materials, gases, and corrosive gases that can severely damage metals.
Operating procedures: Follow the requirements in the operating manual to avoid overheating and overloading. After use, clean the interior of the experimental furnace and promptly turn off the power.
Oven operation: When used for the first time or after long-term disuse, oven operation should be carried out to remove moisture and impurities from the furnace and prevent furnace cracking.
Storage environment: When not in use, store the tube furnace in a dry, ventilated, and clean environment to avoid moisture and dust pollution.

4. Regular maintenance
Component replacement: Regularly replace vulnerable components such as heat-resistant insulation felt and thermocouples to ensure the normal operation of the equipment.
Professional maintenance: Conduct at least one major maintenance and overhaul every year, with comprehensive inspection and repair carried out by professional personnel.

In summary, the daily maintenance of experimental gradient tube furnaces involves multiple aspects, including regular cleaning, inspection and maintenance, proper use and storage, and regular maintenance. Through strict maintenance measures, the normal operation and extended service life of the equipment can be ensured, while ensuring the safety and effectiveness of the experimental process.