Common faults and solutions of laboratory high-temperature tube sintering furnace

The common faults and solutions of laboratory high-temperature tube sintering furnace are as follows:

1. Temperature control malfunction
Fault phenomenon: The temperature inside the furnace cannot reach the set value or fluctuates too much.
Possible reasons:
Temperature sensor malfunction.
The control instrument is damaged.
Heating element aging.
resolvent:
Check if the temperature sensor is damaged or improperly installed, and replace the sensor if necessary.
Re calibrate the control instruments to ensure their correctness; If the instrument malfunctions, it needs to be replaced in a timely manner.
Conduct a comprehensive inspection of the heating element to check for any issues such as open circuits or short circuits, and repair or replace it according to the actual situation.

2. Atmosphere control malfunction
Fault phenomenon: The atmosphere inside the furnace does not meet the requirements, affecting the quality of the materials.
Possible reasons:
Gas delivery system malfunction.
Improper adjustment of gas flow rate.
Pipeline leakage.
resolvent:
Regularly inspect gas transmission pipelines for leaks and promptly replace damaged parts.
Ensure that the gas flow control valve is functioning properly and make necessary adjustments and repairs.
Check the quality of the gas source to ensure that the purity of the gas used meets the experimental requirements.

3. Heating speed too slow
Fault phenomenon: The heating process cannot reach the set time, which affects the efficiency of the experiment.
Possible reasons:
The heating element is damaged.
The insulation material is aging.
Improper temperature control system settings.
resolvent:
Regularly replace heating elements such as liquid metal to ensure they operate in good condition.
Check the condition of the insulation layer of the furnace body and re insulate it if necessary.
Ensure that the temperature control system settings meet the requirements and avoid excessive program adjustments that may prolong the heating time.

4. Furnace body leakage
Fault phenomenon: Inconsistent experimental atmosphere increases energy consumption and affects material quality.
Possible reasons:
The furnace body is not tightly sealed.
The flange connection bolts are loose.
resolvent:
Check if the sealing gaskets at each connection of the furnace body are intact and replace them if necessary.
For the flange connection, ensure that all bolts are evenly secured with force.
Regularly conduct leak detection and use soap water or specialized testing solution to quickly identify the leak point.

5. Other faults
Fault phenomenon: After the tube furnace is powered on, there is no power display on the instrument.
Possible reasons:
The plug is not properly inserted.
The fuse is blown.
The fuse of the control circuit is blown.
resolvent:
Check if the plug is properly plugged in or connected.
Replace the fuse.
Check for short circuit, eliminate it and replace the fuse.
Fault phenomenon: The power supply and heating elements of the tube furnace are normal, but the temperature inside the furnace does not rise.
Possible reasons:
The set temperature is relatively low.
The control circuit is damaged.
resolvent:
Adjust the set temperature.
Notify professional maintenance personnel to conduct repairs.
Fault phenomenon: The set temperature does not match the temperature inside the furnace, resulting in a positive or negative deviation.
Possible reasons:
The temperature sensor or temperature controller is damaged.
There is a deviation between the temperature measurement point and the layout point.
resolvent:
Replace the temperature sensor or thermostat.
Set the layout position correctly.
Fault phenomenon: The tube furnace instrument is outputting normally, but the OUT indicator light is not flashing.
Possible cause: The main circuit has malfunctioned.
Solution: Check if the resistance wire is short circuited, if the heating element is controllable, and replace the resistance wire or temperature controller.