What is the reason why the temperature of the experimental rotary tube furnace cannot rise?

The inability of the experimental rotary tube furnace to rise in temperature may be caused by various reasons. The following provides a detailed analysis from five aspects: power and electrical system, heating element, temperature control system, furnace structure and insulation performance, operation and process settings:

1. Power and electrical system issues
Power failure:
Unstable or insufficient power supply voltage may cause heating elements to malfunction, thereby affecting temperature rise.
Solution: Check if the power supply voltage is stable and ensure it meets the equipment requirements. If necessary, use a voltage regulator or adjust the power configuration.
Poor electrical connection:
The power cord, heating element connection wire, etc. may cause poor current transmission due to looseness, aging, or poor contact.
Solution: Check if all electrical connections are secure. If there is any looseness or aging, tighten or replace the connecting wires in a timely manner.

2. Heating element issue
Heating element damage:
Heating elements (such as resistance wires, electric heating tubes, etc.) may be damaged due to prolonged use, overload, or aging.
Solution: Check if the heating element is intact. If it is damaged, replace it with a new one in a timely manner.
Insufficient power of heating element:
The power of the heating element may not be sufficient to raise the furnace temperature to the required level in a short period of time.
Solution: Select appropriate heating elements based on equipment specifications and experimental requirements to ensure their power meets the requirements.

3. Temperature control system issue
Temperature sensor malfunction:
The temperature sensor may have inaccurate measurements due to damage, aging, or improper placement, which can affect temperature control.
Solution: Check if the temperature sensor is intact. If it is damaged or improperly positioned, replace or adjust it in a timely manner.
Improper setting of temperature controller:
The parameter settings of the temperature controller may be incorrect, resulting in inaccurate control of the furnace temperature.
Solution: Check the parameter settings of the temperature controller to ensure that it meets the experimental requirements. If necessary, reset the temperature controller parameters.
Control logic error:
The control logic of the temperature control system may have errors, resulting in incorrect response to temperature changes.
Solution: Check if the control logic is correct. If there are any errors, promptly correct them or contact professional personnel for debugging.

4. Furnace structure and insulation performance issues
Poor sealing of furnace body:
Poor sealing of the furnace body may lead to heat loss and affect temperature rise.
Solution: Check the sealing of the furnace body. If there is any air leakage, repair or replace the sealing components in a timely manner.
Aging or damage of insulation materials:
The insulation material may age or be damaged due to prolonged use, resulting in a decrease in insulation performance.
Solution: Check if the insulation material is intact. If there is aging or damage, replace it with a new insulation material in a timely manner.

5. Operation and process setting issues
Improper heating rate setting:
Setting the heating rate too fast or too slow may affect the temperature rise.
Solution: Set the heating rate reasonably according to the experimental requirements and equipment specifications.
Improper placement of samples:
Improper placement of samples may affect heat transfer and temperature distribution.
Solution: Ensure that the sample is placed in a suitable position inside the furnace, avoiding blocking the heating element or affecting heat transfer.