Detection method of sandbox sealing performance
A detection method and sealing technology are applied in the detection field of sand box sealing, which can solve the problems of drop of vacuum degree of sand box, insufficient negative pressure, collapse of sand box, etc., and achieve flexible operation, guaranteed vacuum degree and low cost. Effect
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[0036] figure 1 It is a schematic flow diagram of an embodiment of the method for detecting the tightness of the flask 1 of the present invention. Such as figure 1 As shown, the method for detecting the tightness of the flask 1 of this embodiment may include the following steps.
[0037] S1: Step 1: Seal the flask 1 and then pass compressed air into the flask 1 to make the flask 1 have a positive pressure.
[0038] Specifically, the flask 1 is transferred to the inspection station on the inspection track 2, and then the vacuum docking hole 3 at the bottom of the flask 1 is connected to the hydraulic sealing valve 4, and the top sealing cover 5 is installed with the flask 1 , And use the standard C-type card 6 to fix it firmly. After the flask 1 and the compressed air valve 7 are connected through the compressed air hole on the top sealing cover, compressed air is introduced into the flask 1 to make the flask 1 straight. Pressure state for inspection.
[0039] S2: Step 2: Record the...
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