What is the reason why the vacuum sintering furnace cannot be evacuated?

The vacuum sintering furnace may not be able to draw vacuum due to various reasons. The following are some common reasons and their solutions:

1. Vacuum pump malfunction
Pump oil pollution, insufficient or too thin: This can cause poor operation of the vacuum pump, thereby affecting the vacuum extraction effect. The solution is to clean the vacuum pump and replace it with new vacuum pump oil.
Vacuum pump damage: such as pump body wear, rotor damage, etc., can also cause the vacuum pump to malfunction. At this point, it is necessary to replace the vacuum pump with a new one or repair the damaged pump parts.

2. Sealing issue
Aging, corrosion or damage of seals: Seals such as O-rings, gaskets, etc. may age or be damaged during use, leading to air leakage. The solution is to inspect and replace aging or broken seals to ensure good sealing.
Loose pipeline connections: Loose or poorly sealed pipeline connections such as solenoid valves and pipe joints can also cause air leakage. It is necessary to check and tighten these connections to ensure sealing.

3. Extraction system issue
Blockage of exhaust filter: The exhaust filter may become clogged during long-term use, resulting in poor airflow and affecting the vacuum extraction effect. The solution is to clean or replace the exhaust filter.
Insufficient pumping time: If the pumping time is too short, there will be too much residual gas in the furnace, which will also affect the vacuum degree. At this point, it is necessary to extend the pumping time.

4. Other factors
Heating element issue: Heating elements such as heating strips, heating wires, etc. may also affect the vacuum extraction effect if they age, are damaged, or have poor contact. Need to check the connection and resistance of the heating element, repair or replace damaged heating elements.
Control system failure: If the control system, such as power lines and components, is damaged or aged, it may also cause the vacuum sintering furnace to malfunction. It is necessary to check the power supply circuit and components of the control system to ensure normal power supply, and replace damaged components.

5. Daily maintenance and upkeep
Regular cleaning: Regularly clean the dust and oil stains inside the vacuum sintering furnace to keep the equipment clean and hygienic.
Regularly replace vulnerable parts: such as cylinder seals, heat-resistant seals, and other vulnerable parts that age or are damaged, they should be replaced in a timely manner.
Fault record: Record the faults of the vacuum sintering furnace, including the symptoms, causes, and solutions, in order to facilitate future maintenance work and fault diagnosis.

In summary, the reasons why vacuum sintering furnaces cannot achieve vacuum pumping may involve multiple aspects such as vacuum pumps, seals, pumping systems, heating elements, and control systems. When troubleshooting, it is necessary to comprehensively consider these factors and adopt corresponding solutions to ensure the normal operation of the equipment.