The usage method of vacuum annealing furnace

The usage method of vacuum annealing furnace mainly includes the following steps:
1. Preliminary preparation
Check equipment:
After receiving the equipment, check if it is in good condition and check if the supporting accessories are complete according to the packing list.
The equipment should be placed in a place with good air circulation, no vibration, no flammable or explosive gases, or high dust.
Confirm that the device has been correctly connected to the power and water sources, and follow the instructions for connection and inspection.
Security protection:
Operators should wear relevant labor protection equipment, such as gloves, goggles, masks, etc.
Ensure the safety and hygiene conditions of the work environment, and fire prevention measures are in place.
Cleaning work:
Check for impurities or solid residues inside the furnace, and if so, clean them thoroughly.
Clean the air inside the vacuum furnace to ensure there are no impurities.
2. Sample loading
Place the sample:
Place the samples to be annealed in the material basket, ensuring that they do not come into contact with each other and ensuring sufficient ventilation.
Place the material basket into the furnace cavity, paying attention to the placement of the sample to ensure that it can be evenly heated.
At the same time, attention should be paid to the distance between the sample and the heating furnace wall to avoid damage caused by thermal stress.
3. System inspection and setup
Vacuum system inspection:
Check whether the vacuum pump and sealing system are working properly, and whether the vacuum pipeline is leaking.
Connect the vacuum pump, start the vacuum pump and gradually remove the gas inside the heating chamber to establish the required vacuum environment.
Observe whether the vacuum level indicated on the vacuum gauge meets the working requirements. If not, continue pumping until the vacuum level meets the requirements.
Heating parameter settings:
Set heating parameters based on the characteristics and process requirements of the material to be processed, including heating temperature, insulation time, etc.
Set a temperature control program inside the instrument to ensure that the equipment operates within a safe range and achieves the expected processing effect.
4. Start annealing treatment
Start device:
Turn on the power, connect the electrodes, and adjust the instrument to set the heating and insulation temperatures.
Press the start button, the device starts working, automatically enters the preheating stage, and gradually heats up to the set temperature.
Monitoring process:
During the annealing process, pay attention to monitoring the temperature changes during the heating process and make adjustments as needed.
Ensure stable operation of the vacuum system and monitor changes in vacuum level.
5. Cooling and post-processing
Cooling:
After annealing treatment, it is necessary to gradually reduce the temperature inside the heating chamber.
Turn on the cooling system or blower as needed for cooling until the temperature inside the furnace drops to the desired level.
Pressure relief and material retrieval:
Close the vacuum valve, open the vent valve, and release the pressure of the vacuum system.
After the vacuum degree returns to normal, open the furnace door and take out the material.
6. Equipment maintenance
Cleaning and maintenance:
After completing the annealing process, turn off all systems of the equipment and perform cleaning and maintenance work on the equipment.
Clean up the attachments inside and outside the equipment and tools, and keep the equipment clean.
Regularly replace the oil of the vacuum pump and clean the pump body to ensure the normal working condition of the equipment.
Record and Inspection:
Record the operation and maintenance records of the equipment for future reference and analysis.
Regularly check whether all parts of the equipment are normal and stable, whether the power supply and wiring are well connected, and whether the grounding is good.
7. Precautions
Safe operation:
Strictly follow the equipment working procedures, operate with caution, and avoid safety accidents.
During the processing, the furnace door cannot be opened arbitrarily, and materials must be taken out after the processing is completed.
Accurate processing:
During processing, it is necessary to accurately follow the requirements for treatment or heat treatment to achieve the expected effect.
Pay attention to protecting oneself and equipment safety, and avoid unexpected situations.
By following the above steps and precautions, the correct use and safe operation of the vacuum annealing furnace can be ensured, thereby achieving the expected annealing effect.