Common faults and troubleshooting methods of box type high-temperature heat treatment furnace

Common faults of box type high-temperature heat treatment furnaces include temperature control faults, electrical faults, airtightness faults, heating element faults, ventilation system faults, mechanical structure damage, and safety hazards. The following are specific fault phenomena and troubleshooting methods:

1. Temperature control malfunction
Fault symptoms: large temperature fluctuations, inaccurate temperature control, inaccurate or unstable temperature display.
Exclusion method:
Check if the temperature sensor is working properly and replace it if necessary.
Check the difference between the set temperature of the control instrument and the actual operating temperature, and identify setting or debugging issues.
Confirm the working status of the heating element and ensure that there are no open circuits or short circuits.
Calibrate the temperature sensor using a standard temperature source to ensure accuracy.

2. Electrical malfunction
Fault symptoms: The furnace cannot be started, the indicator light does not light up, the power supply is unstable, the control panel is malfunctioning, etc.
Exclusion method:
Confirm if the power supply is functioning properly and if strong and weak electricity are installed separately to avoid mutual interference.
Check the fuses and circuit breakers to ensure they are working properly and there is no burning phenomenon.
Check if the wiring of the control panel is secure and observe for any looseness or corrosion.
Starting from the power supply, check the electrical system one by one, including power supply voltage, branch fuses, etc., and replace components if necessary.

3. Airtightness malfunction
Fault phenomenon: There is a noticeable odor or oil fume around the furnace body.
Exclusion method:
Visually inspect the sealing of the furnace body and check if the door sealing strip is aging or loose.
Use soapy water to detect the gas leakage at the joints. If there is foam, the joints need to be treated again.
Regularly maintain the furnace body to ensure that all connection parts are in good condition.

4. Heating element malfunction
Fault phenomenon: Uneven heating or inability to increase furnace temperature.
Exclusion method:
Check the resistance of the heating element to confirm if it is within the normal range.
Check if the connecting wires of the heating element are damaged or broken.
If necessary, replace the heating element to ensure heating performance.

5. Ventilation system malfunction
Fault symptoms: The fan does not rotate, insufficient air flow, etc.
Exclusion method:
Check the power connection of the fan and confirm that the fan is functioning properly. If the fan does not turn, you can consider replacing the fan motor.
For the problem of insufficient air flow, it is necessary to check whether the ventilation ducts are blocked and regularly clean the ventilation system to ensure smooth operation.

6. Mechanical structure damage
Fault symptoms: loose door seal, deformation of supporting structure, etc.
Exclusion method:
For any deformation or damage to the supporting parts, it is recommended to weld or replace them to ensure the stability and operational safety of the furnace body.
Regularly lubricating the mechanical parts can reduce wear and improve the service life of the equipment.

7. Safety hazards
Fault symptoms: abnormal heating and leakage of the furnace body.
Exclusion method:
Regularly check the connection of the grounding wire to ensure its effectiveness.
Observe the operation of the furnace body to ensure that there is no smoke or odor.
Equip with necessary fire-fighting equipment and conduct regular emergency drills.