How to use tubular electric furnaces in the laboratory

What should I pay attention to when using a high-temperature tubular electric furnace indoors? High temperature tube furnace is an industrial furnace that uses electric current to heat the electric heating elements or heating medium inside the furnace, thereby heating the workpiece or material. Industrial resistance furnaces can be divided into two categories: periodic furnace and continuous furnace. High temperature resistance furnace is a kind of high temperature electric furnace. It has unique characteristics, such as simple structure, uniform furnace temperature, easy control, good heating quality, no smoke and dust, no noise, etc., but its use cost is high. The use of high-temperature resistance furnaces and other high-temperature furnaces should strictly follow the safety operation procedures to ensure personnel safety and avoid damage to the furnace body and workpiece.
1、 Pre work process
1. Check if the furnace is clean, clean up any debris, and ensure that the furnace is clean.
2. Check the furnace wall and bottom plate for cracks and other damages.
3. Check the installation and fastening of the resistance wire and thermocouple lead out rod, and ensure that the instrument is functioning properly.
4. Check if the resistance furnace door switch is flexible.
5. After ensuring that everything is normal, start placing the workpiece.
2、 Process in Work
1. Ensure that the power is turned off when placing the workpiece.
2. Handle with care to avoid damaging electric heating components, furnace floor, etc;
3. It is strictly prohibited to place damp workpieces, and the heated workpieces and electric heating elements in the furnace should be kept at a distance of 50-70mm; The workpiece should be placed neatly and not stacked too high to avoid damaging the thermocouple sleeve. 4. Check various instruments and instruments during work, and if there are any abnormalities, repair them in a timely manner.
5. When the furnace temperature is above 700 ℃, it is not allowed to open the furnace door to cool down or discharge the furnace, in order to avoid shortening the furnace life due to sudden cooling.
3、 The process after work.
1. Cut off the power supply
2. Handle and handle the workpiece gently, making sure not to damage the furnace body and workpiece.
3. Reinstall the furnace and repeat the above procedure.
4. Clean up the debris inside and ensure cleanliness.
5. Pay attention to daily maintenance work.