The vacuum degree of the muffle furnace cannot be increased in a vacuum atmosphere

The vacuum degree of the muffle furnace in a vacuum atmosphere cannot be increased, which may be caused by vacuum pump failure, seal damage, pipeline leakage, control system problems, improper operation, or equipment leakage. The following are specific analysis and solutions:

Vacuum pump malfunction
Wear of pump body: During long-term operation of a vacuum pump, the internal parts of the pump body will gradually wear out, resulting in a decrease in the pumping capacity of the pump. At this point, it is necessary to clean or replace damaged parts, and even replace the entire vacuum pump.
Seal damage: The seal of the vacuum pump is prone to aging or damage in high temperature and high pressure environments, resulting in a decrease in the sealing performance of the pump. Damaged seals should be inspected and replaced to ensure the sealing of the vacuum pump.
Motor failure: The motor failure of the vacuum pump can also affect the normal operation of the pump, resulting in a decrease in pumping efficiency. At this point, it is necessary to inspect the motor and repair or replace the faulty motor.

Seal damaged
Poor sealing of furnace door: Aging or damage to the sealing components of the furnace door may lead to insufficient vacuum degree. The sealing components of the furnace door should be checked and replaced with new ones if necessary, and ensure that the furnace door is tightly closed.
Poor sealing at pipeline connections: There may be leaks at pipeline connections, valves, and other parts of the vacuum system, leading to a decrease in vacuum degree. Pipeline connections should be inspected, and poorly sealed components should be repaired or replaced.

Pipeline leakage
Vacuum system pipeline leakage: Vacuum system pipelines may leak due to aging, corrosion, or improper installation. Static pressure rise method and other methods should be used to detect leakage points and repair them.

Control system issues
Vacuum gauge misalignment: Vacuum measuring instruments that are misaligned or damaged may result in inaccurate vacuum measurement. The vacuum gauge should be calibrated regularly to ensure its accuracy.
Control system failure: The action mechanism of the vacuum valve fails, causing the valve to be unable to open or close normally, affecting the normal operation of the vacuum system. The control system should be inspected and repaired to ensure its proper functioning.

Improper operation
Insufficient vacuum pumping time: Insufficient vacuum pumping time may result in the vacuum degree inside the furnace not meeting the process requirements. The vacuuming time should be extended to ensure that the vacuum degree inside the furnace meets the requirements.
Operation sequence error: Incorrect operation sequence may cause the vacuum system to malfunction. The correct operation sequence should be followed to ensure the normal operation of the vacuum system.

Equipment leakage
There may be leakage points in the equipment body: The equipment body of the vacuum atmosphere muffle furnace may have leakage points, such as weld cracking, uneven sealing surfaces, etc. The equipment body should be carefully inspected and all leakage points repaired.