Common faults and solutions of high-temperature heat treatment furnaces

High temperature heat treatment furnaces may encounter various faults during use. Here are some common faults and their corresponding solutions:

1. Heating element malfunction
Phenomenon:

The high-temperature furnace cannot heat up normally.
The heating indicator light is on, but the ohmmeter shows that the heating element is open circuit.
resolvent:

Replace damaged heating elements.
Choose appropriate materials and specifications, and ensure a stable and reliable connection.
2. Inaccurate temperature control
Phenomenon:

The temperature of the high-temperature furnace exceeds or falls below the set value.
The accuracy or reliability of the temperature sensor decreases.
resolvent:

Regularly calibrate and maintain temperature sensors to ensure their accuracy and precision.
Timely replace aging or damaged controllers.
3. Media leakage
Phenomenon:

Leakage of medium (such as high-temperature gas or liquid) in the high-temperature furnace.
Leakage may affect the heating effect and pose a safety hazard.
resolvent:

Regularly inspect the medium pipelines and interfaces to ensure their sealing.
Replace or repair damaged pipelines or interfaces in a timely manner.
4. Structural looseness or deformation
Phenomenon:

Various components in the high-temperature furnace are loose or deformed.
The device is unstable or has limited functionality.
resolvent:

Regularly inspect and tighten all components of the high-temperature furnace.
Promptly detect loose or deformed components and repair or replace them.
Strictly control the temperature and operating time to avoid more severe looseness or deformation caused by excessive temperature and prolonged operation.
5. Electrical malfunction
Phenomenon:

Poor power wiring and unstable power supply voltage.
Electrical issues such as protection device failure.
resolvent:

Check and maintain the status of power lines and protective devices.
Reasonably plan power supply and reduce the impact of voltage fluctuations on high-temperature furnaces.
6.The temperature inside the furnace is not constant or exceeds the limit
Phenomenon:

The temperature inside the furnace fluctuates greatly or exceeds the set temperature range.
resolvent:

Check whether the main contactor, circuit breaker, insulation resistance, current transformer, temperature controller, thermistor, frequency converter or control system are normal.
Check if the condition of the furnace and its refractory materials is abnormal.
Check if the heat treatment process is carried out as required.
Check if the frequency converter adjustment is normal.
Check for any smoke leakage, and take remedial measures as soon as possible if there is any leakage.
7. Uneven heating
Phenomenon:

Uneven heating inside the furnace affects product quality.
resolvent:

Check the flow of heat treatment medium in the furnace.
Check the operational performance of heat treatment equipment.
Check if the heating pipeline is damaged.
Check if the frequency converter control is normal.
Check if the condition of the furnace and its refractory materials is normal.
In summary, the common faults of high-temperature heat treatment furnaces involve multiple aspects, and it is necessary to comprehensively consider the characteristics of the equipment itself and the impact of the operating environment. By regular inspection, maintenance, and proper operation, it is possible to effectively prevent and avoid faults in high-temperature furnaces, and ensure their normal operation and safe use. At the same time, non professionals should avoid disassembling or repairing high-temperature furnaces without authorization to avoid causing safety accidents or aggravating equipment damage.