Wed, 12 Sep 2018 02:26:52 +0000
vacuum sintering furnace advantages
Introduction to the advantages of vacuum sintering furnace
With the increasing domestic demand for vacuum sintering furnace and the continuous development of vacuum sintering technology, the need for various vacuum sintering furnace is more urgent. In recent years, various types of vacuum sintering furnaces have been made in China. These equipments are not only new in structure and wide in use, but also catch up with some equipments produced by developed countries. The advantages of vacuum sintering furnace are introduced.
1. The shell, cover, conductive disposal of electric heating elements (water-cooled electrode), water-cooled device, intermediate vacuum heat insulation and other components of the vacuum sintering furnace all work under vacuum and heating conditions. Under such extremely unfavorable conditions, it is necessary to ensure that the structure of each component is not deformed and damaged, and that the vacuum sealing ring is not overheated or burned. Therefore, Hunan top science and technology introduced that each component should be set up water-cooled device according to different conditions to ensure that the vacuum heat treatment furnace can operate normally and has sufficient service life.
2. Adopting low voltage and high current: arc discharge will occur in vacuum vessel seriously, and glow discharge will occur in the electrified conductor of vacuum vessel at higher voltage. Therefore, the working voltage of the electric heating element of the vacuum heat treatment furnace generally does not exceed 80 1 100 volts. At the same time, effective measures should be taken to prevent glow discharge or arc discharge, such as avoiding cutting-edge components as far as possible, and the spacing between electrodes should not be too narrow. In the vacuum heat treatment furnace, the electric heating element and insulation layer are burned, causing serious accidents and losses.
3. Strict vacuum sealing: In order to ensure the vacuum performance of the vacuum sintering furnace, a basic principle must be followed in the design of the vacuum heat treatment furnace structure, that is, the furnace should be air-tightly welded. As is known to all, the vacuum heat treatment of metal parts is carried out in an airtight vacuum furnace, therefore, the original furnace is obtained and maintained. It is very important to ensure the quality of vacuum heat treatment of parts by ensuring the leakage rate and working vacuum of vacuum furnace. Therefore, a key problem of vacuum heat treatment furnace is to have a reliable vacuum sealing structure. At the same time, as far as possible in the furnace body, less or no hole, less or avoid the use of dynamic sealing structure, in order to minimize the chance of vacuum leakage. Sealing structure must also be designed for parts and accessories such as water-cooled electrodes and thermocouple outlets installed on the vacuum furnace body.
4. High degree of automation: The degree of automation of vacuum heat treatment furnace is higher, because the metal workpiece heating, cooling and other operations, need dozens or even dozens of actions to complete. These movements are carried out inside the vacuum heat treatment furnace, and the operators are unable to access them. At the same time, some actions such as heating and holding after the completion of the metal workpiece quenching process to take six or six actions and to complete within 15 seconds. In such a rapid condition to complete many movements, it is easy to cause operator tension and constitute a misoperation.