Vacuum Degree Detection Method of Vacuum Sintering Furnace

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Vacuum Degree Detection Method of Vacuum Sintering Furnace

Vacuum furnace is a device that performs processes such as heat treatment, ceramic sintering, and metal smelting on materials under vacuum or gas protection. Normal use needs to meet certain vacuum requirements, which has an important impact on the service life of the equipment and the quality of the finished product. Therefore, it is particularly important to detect the vacuum degree of the vacuum furnace.

1. Why do we need to detect the vacuum degree?

Vacuum degree is a key indicator of vacuum furnace performance. It is related to the purity of the atmosphere in the furnace, the uniformity of heat treatment, and the performance of the material. Through accurate vacuum degree detection, the furnace environment can be adjusted in time to ensure the effective progress of the heat treatment process and extend the service life of the equipment.

2. What are the classifications of vacuum degree detection methods?

The vacuum degree detection methods of vacuum furnaces are mainly divided into two categories: direct measurement and indirect measurement.

a. Direct measurement method

The direct measurement method is to directly read the vacuum value in the furnace by using instruments such as vacuum gauges. This method is simple and easy, and the results are intuitive, but it is limited by the accuracy and measurement range of the instrument. Commonly used direct measurement instruments include resistance vacuum gauges, thermocouple vacuum gauges, etc.

b. Indirect measurement method

The indirect measurement method is to measure other physical quantities related to vacuum, such as gas pressure, temperature, etc., and then calculate the vacuum value. This method is relatively complex, but it can provide more accurate measurement results under certain special conditions. Common indirect measurement methods include pressure difference method, gas discharge method, etc.

3. What are the steps for vacuum detection?

Whether it is direct measurement or indirect measurement, vacuum detection needs to follow certain operating steps to ensure the accuracy of measurement. This includes instrument calibration, measurement point selection, measurement process control, data recording and analysis, etc.

4. What are the common detection equipment?

For the detection of vacuum furnace vacuum, the process is completed by equipment. The following are the popular detection equipment on the market:

a. Capillary gauge

The capillary gauge is one of the commonly used tube vacuum gauges. It can be used to measure gas pressure and vacuum, and can play many roles in vacuum furnaces and other equipment. At the same time, the use of the capillary gauge is relatively simple and easy to operate. It is one of the most widely used vacuum gauges.

b. Thermal dilatometer

Thermal dilatometer is a commonly used high vacuum gauge that can measure lower gas pressure and higher vacuum degree. Its operating temperature range is also relatively wide, usually in the range of 300-1800K.

c. Mass spectrometer

Mass spectrometer is a modern mass spectrometry detection equipment that can efficiently scan the components contained in the gas, so it can obtain reliable and accurate vacuum values. The use process of the mass spectrometer is relatively cumbersome, but its detection effect is very good.

5. What should be paid attention to in vacuum degree detection?

When conducting vacuum furnace vacuum degree detection, the following points need to be noted:

a. Keep the detection equipment confidential to avoid data leakage.

b. The vacuum furnace is required to reach a steady state during detection to avoid temperature changes and other interferences.

c. The equipment needs to be pre-processed before detection, and the influence of the detection equipment itself on the results should be eliminated as much as possible.

d. During the detection process, it is necessary to pay attention to the changes in parameters such as temperature and pressure, and record them in time to verify the reliability of the results.

e. The test results need to be saved in time and compared with historical data for equipment maintenance and problem troubleshooting.

Fiber Vacuum Furnace (Click on the image to learn more)

In short, the detection of vacuum furnace vacuum is an important link to ensure the quality of heat treatment process and safe operation of equipment. There are two main detection methods: tube method and mass spectrometry. Capillary meter, thermal expansion meter, mass spectrometer and other equipment are required to complete. At the same time, attention should be paid to the details and precautions in the detection process so that we can effectively monitor and adjust the furnace environment and provide strong guarantee for the heat treatment of materials.

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