Vacuum method of experimental vacuum furnace

Because of the heating and cooling of metal workpieces, it takes a dozen or even dozens of actions to complete. These actions are carried out inside the vacuum heat treatment furnace, and the operators are unable to get close. Therefore, the requirements for the automation degree of the vacuum heat treatment experimental furnace are higher. At the same time, some actions, such as the heating and heat preservation, the metal workpiece shall be hardened by six or seven motions and shall be completed within 15 seconds.

Vacuum heat treatment of metal parts is carried out in closed vacuum furnace, and strict vacuum seal is well known. Therefore, it is of great significance to obtain and adhere to the original air leakage rate of the furnace and ensure the vacuum degree of vacuum furnace, which is of great significance to ensure the quality of vacuum heat treatment of parts. Therefore, a key problem of vacuum heat treatment furnace is to have a reliable vacuum seal structure.

To guarantee the vacuum performance of vacuum furnace, vacuum heat treatment furnace structure design must follow a basic principle, is the furnace should use airtight welding, at the same time as little as possible to open or not open hole in the furnace body, less use or avoid use dynamic seal structure, to minimize the opportunity of the vacuum leak. The parts and accessories such as water cooling electrodes and thermocouple export devices installed in the vacuum furnace must also be designed and sealed.