Common faults and solutions of box type atmosphere furnace

Box type atmosphere furnaces may encounter various faults during use. Here are some common faults and their solutions:

1. Insufficient vacuum
Check the vacuum pump:
Confirm if the vacuum pump is working properly. If there is a malfunction, it may be necessary to clean, repair, or replace damaged parts.
Check the seals:
Check for poor sealing at furnace doors, pipeline connections, etc. If there are aging or damaged seals, they need to be replaced or reinstalled.
Check for leaks:
Confirm that the vacuum source of the equipment is normal and the compressed air pressure is normal.
Check whether the vacuum gauge is normal, whether the door is tightly closed, whether the sealing membrane door is damaged or deformed, and whether the door is contaminated by foreign objects.
If there is no problem with the door, check whether there are any leakage points in the corresponding working areas of the pipeline, pneumatic valve, thermocouple inlet, etc., and repair them.
Maintenance and upkeep:
Conduct a thorough post operation inspection to ensure optimal performance and service life of the vacuum furnace.
Check the furnace for damage, wear, or contamination, and clean it.
Check for damage or wear on heating elements, thermocouples, and sensors, and promptly replace any damaged components.

2. The temperature is unstable or cannot reach the set value
Check the electrical system:
Check the circuit diagram to see if the power failure has been resolved and if the components have burned out.
Check the connection and resistance of the heating element, repair or replace damaged heating elements.
Check the control system:
Check the settings of the controller to ensure that the parameter settings are correct.
Check the working condition of the sensor and replace the faulty sensor if necessary.
Check the air circulation system:
If the temperature rises slowly, check if the regulating damper of the air circulation is open normally.
If the wind circulation motor is not running properly, it needs to be repaired or replaced.

3. Fault display and alarm
Check the fault display:
When the equipment suddenly malfunctions during the test operation, the corresponding fault display prompt will appear on the control instrument, and there will be an audible alarm prompt.
Refer to the troubleshooting manual:
Operators can refer to the troubleshooting section in the equipment’s operation manual to quickly identify which type of fault it belongs to.
Please have professionals troubleshoot the issue:
According to the type of malfunction, please have professional personnel quickly troubleshoot the problem to ensure the normal progress of the test.

4. Low temperature does not meet the test indicators
Check the status of the studio:
Check whether the working chamber is dried before conducting low-temperature tests in the vacuum atmosphere furnace to keep it dry.
Check if there are too many test samples placed in the studio, causing insufficient air circulation.
Check the refrigeration system:
After eliminating the above reasons, consider whether it is a fault in the refrigeration system and ask the manufacturer’s professional personnel to conduct maintenance.

In summary, common faults of box type atmosphere furnaces include insufficient vacuum, unstable temperature or failure to reach set values, fault display and alarm, and failure to meet test indicators at low temperatures. Corresponding solutions can be taken to troubleshoot and repair these faults. At the same time, regular maintenance and upkeep should be carried out to ensure the normal operation and prolong the service life of the box type atmosphere furnace.