Vacuum furnace is a kind of equipment used for heating samples or processing materials in a vacuum environment, mainly used for sintering, annealing, heat treatment and testing processes. The use of vacuum furnace mainly includes the following aspects:

1. Preparation: Before using the vacuum furnace, it is necessary to carry out preparatory work. First of all, check whether the equipment of the vacuum furnace is normal, to ensure that the vacuum pump, heating system, temperature control system and other components are running normally. Then clean and load the materials or samples to be treated, and according to the process requirements for appropriate treatment.

2. Setting process parameters: According to the process requirements, set the process parameters of the vacuum furnace. It mainly includes parameters such as heating temperature, holding time, vacuum requirement, heating rate and so on. According to different process requirements, adjust these parameters to ensure the treatment effect.

3. Vacuuming: After setting the process parameters, you need to vacuum first. Open the vacuum valve and start vacuuming until the required vacuum level is reached. During the vacuuming process, monitor the vacuum level to ensure that the requirements are met.

4. Heating treatment: The vacuum furnace is mainly used for heating treatment of materials or samples, and begins to heat after vacuuming. According to the process requirements, control the heating temperature and heating rate, and maintain a certain holding time. In the heating process, pay attention to monitoring the temperature and vacuum to ensure that the heating process is carried out smoothly.

5. Cooling treatment: After the heating process is completed, cooling treatment is required. According to the process requirements, control the cooling rate, and maintain an appropriate cooling time. During the cooling process, pay attention to monitoring the temperature and vacuum level to ensure that the cooling process meets the requirements.

6. Completion of the process: After the cooling treatment is completed, turn off the heating system and vacuum pump and remove the sample or treated material. According to the requirements of the process, carry out the necessary follow-up treatment, such as cleaning, testing and so on. After the completion of the entire process, to ensure that the vacuum furnace and the surrounding environment is neat and tidy, properly stored equipment.

In general, the use of vacuum furnace mainly includes preparation, setting process parameters, vacuuming, heating treatment, cooling treatment and completion of the process and other steps. Through the correct operation of the vacuum furnace, effective material heating treatment can be realized to meet different process requirements.