With the development of industry, the use of vacuum furnace more and more widely. Vacuum furnace in the long-term construction process, will produce parts failure and damage, resulting in decreased mechanical operating capacity. In order to ensure the normal operation of the vacuum furnace, to extend the service life, the vacuum furnace operation to do the following analysis:
First, in accordance with the PLC program pumping low vacuum: close all the vacuum valve, start the mechanical pump, until it is running normally (about 1-2 min), open the furnace to the low vacuum valve that is on the disc valve, Body pumping low vacuum.
Second, according to the PLC program pumping high vacuum: open the next disc valve, the diffusion pump for pumping, when the vacuum reaches 15 Pa after the system automatically open the diffusion pump to warm up, generally after about 45 minutes diffusion valve began its role, You can close the upper disc valve, while opening the main block valve to be vacuum to 1.33 × 10Pa or more, can open the heating button on the sample heating.
In addition, vacuum furnace operation can guide the equipment operator within the scope of the duties of the equipment on the inspection site, with the correct inspection methods and tools based on the inspection cycle of equipment for routine maintenance; the operator must be based on this maintenance manual Carefully fill out the “heat treatment equipment routine maintenance records”, by the staff check the review, maintenance staff to collect the archive. The complete set of equipment according to technical requirements after installation, no pieces and a good grounding, you can follow the following items for debugging and acceptance.