Vacuum furnaces generally have more leakage faults in the spring and autumn, and leakage failures occur easily when they are idle for a long time. Our factory takes a monthly pressure increase rate (at room temperature, close all vacuum valves, stop the vacuum system operation, read a number after 1Omin, read a number after 1h, the difference between the two numbers is the value of the pressure rise rate), Understand the trend of vacuum furnace equipment leakage changes, such as continuous shutdown of vacuum furnace equipment for a week, to run once empty.
Prepare operating rules for the use of vacuum furnaces, establish operating records and repair files, statistically accumulate working hours, strengthen routine maintenance, master the changing trend of vacuum furnace equipment technology status, early detect fault damage signs, and avoid hot repairs that are accident repairs, and According to the electric furnace load and working conditions, targeted repair materials are prepared in advance and repair procedures are prepared. For example, the service life of alloy components is related to many factors such as working temperature, furnace media, component quality, and operating conditions, and its fluctuation life span is 6,000 to 10,000 hours.
In the vacuum furnace system leak detection, in addition to mud plug, you can also use the medical needle to absorb the ether leak shot suspected point of leakage, observe the vacuum table reading changes. It is also possible to make blind plates with holes for inserting vacuum silicon tubes, and block the vacuum lines in sections to perform leak detection. Vacuum furnace diffusion pump with carbon deposition can be cleaned by chemical pickling.