Daily maintenance of vacuum annealing furnace

The daily maintenance of a vacuum annealing furnace is the key to ensuring its long-term stable operation and extending its service life. Here are some specific daily maintenance measures:

1. Pre operation inspection
Power check: Ensure that the device’s power supply is functioning properly, without any power outages, short circuits, or bare wires.
Electrical system inspection: Check whether the electrical connectors are clean and tight, and whether the electrical pipeline layout is in good condition.
Heating element inspection: Check whether the connection of the heating element meets the requirements, whether the contact is good, and whether there is no damage or contact with the furnace body and casing.
Cooling system inspection: Ensure that the cooling water circuit is unobstructed and the cooling water is sufficient.
Sealing ring inspection: Check the feel of the sealing ring and sealing groove to ensure that there are no foreign objects and the seal is good.

2. Precautions during operation
Workpiece processing: It is strictly prohibited to put workpieces containing corrosive, volatile, or explosive gases into the furnace for processing, in order to avoid affecting the service life of heating elements and refractory materials and causing accidents such as explosions.
Loading capacity control: Workpieces should be evenly stacked, not exceeding the designed loading capacity, to avoid impacting the furnace.
Operation standard: When loading and unloading workpieces in an electric furnace, the power supply of the heating element must be cut off first to ensure the safety of the operator.
Temperature monitoring: Regularly check the accuracy of the temperature control system to ensure correct temperature measurement.

3. Maintenance and upkeep after operation
Cleaning equipment: After use, if the interior of the equipment is not clean, use a damp cloth soaked in alcohol or gasoline to wipe and dry it.
Seal maintenance: When disassembling the sealing structure, vacuum system, and other components on the furnace body, clean and dry them with alcohol or gasoline, apply vacuum grease, and then assemble them.
Lubrication and maintenance: Regularly inject an appropriate amount of engine oil into the rotating parts such as the bearing seat to ensure the flexible transmission of the rotating parts.
Pressure gauge inspection: Check the pressure gauge of the vacuum furnace every six months to verify its accuracy.
Hydraulic oil replacement: When operating the vacuum furnace, choose anti-wear hydraulic oil No. 46, control the oil temperature within the range of 15 ℃ to 60 ℃, replace it once a year, and the first replacement should not exceed three months.
Long term shutdown treatment: If the vacuum annealing furnace is not used for a long time, the entire processed surface should be wiped clean, a layer of rust proof oil should be applied, and the cooling water should be drained.

4. Personnel training and supervision
Personnel training: Operators should be familiar with the structure and performance of electric furnaces and their auxiliary equipment, understand the operating process and safety operating procedures.
Safety supervision: When using the electric furnace, operators must not leave their posts without authorization and must always pay attention to whether the working condition of the electric furnace is normal.

In summary, the daily maintenance of vacuum annealing furnaces involves multiple aspects such as pre operation inspections, precautions during operation, post operation maintenance and upkeep, as well as personnel training and supervision. Only by comprehensively carrying out these maintenance tasks can we ensure the long-term stable operation and extended service life of the vacuum annealing furnace.