Vakuumofen leak inspection steps

(1) Check whether the glass sight glass of the observation window of the vacuum furnace is broken. If it breaks, it should be replaced.

(2) Check whether the hexagon socket screws on the observation window are loose.

(3) Check whether the inner and outer sealing rings (white) of the observation window are aging. If they are aging, they need to be replaced with new ones.

(4) Remove the automatic inflation device on the base of the vacuum furnace, use a clean rag dipped in gasoline to remove the sealing rubber and the ash on the inflatable sealing surface, and reinstall it as it is.

(5) Check the sealing condition of the pressure measuring point on the bottom of the vacuum furnace body, and tighten the tightening nut if it is loose, and replace the sealing ring if it is damaged.

(6) Check the sealing condition of the cathode part, tighten the tightening nut if it is loose, and replace the sealing ring if it is damaged.

(7) Check the sealing flange surface at the bottom of the bell jar of the vacuum furnace. If there is any damage such as rust, pits, etc., it should be dealt with in time. (Note: Every time the bell jar is hoisted, it should be placed on a rubber sheet, wooden square or other soft support to prevent damage to the sealing flange surface.)

(8) Check the large sealing ring on the bottom of the furnace body. If it is damaged, it should be repaired or replaced in time. (Note: Every time after lifting the bell, before putting it on again, use a clean brush to remove the ash on the chassis and the large sealing ring, and then wipe off the sealing flange surface and the sealing flange with a clean rag moistened with gasoline. The ash on the large sealing ring to prevent the ash from embedding in the large sealing ring and causing air leakage.)

(9) Check the tightness of the connecting flange surfaces of the vacuum furnace exhaust hard elbow. If there is looseness, it should be evenly tightened. If the sealing ring is damaged, it should be replaced in time.

(10) Check whether there is ash and slag on the inner sealing ring of the butterfly valve of the vacuum furnace. If there is ash and slag, the butterfly valve tube may not die and leak air. If such a situation is found, it should be cleaned up with a clean rag moistened with gasoline in time, and then coated with vacuum grease.

Note: When cleaning the butterfly valve sealing ring, do not soak the sealing ring with gasoline, otherwise the sealing ring will expand and the butterfly valve will not be able to switch.