| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for vacuum impregnating and its device which rapidly and highly accurately change the pressure in the vacuum impregnation chamber into desired pressure with simple construction. SOLUTION: In the construction of the vacuum impregnation device, disk like separation walls 2a, 2b are arranged inside a horizontally cylindrical chamber main body 1 so as to airtightly slide on an inner peripheral surface of a cylindrical wall 1c. Thereby a vacuum impregnation chamber 3, of which the separation walls are made to be a part of its inner wall, is dividedly formed. A work charging port and a work take-out port, which freely open and shut, are formed in the chamber 3. At the same time, the inside of the chamber 3 is connected to an evacuating system 5, a vacuum breaking means, a source of pressurizing gas supply 6 and a source of impregnating material supply 8. In the case of the vacuum impregnation operation, the separation walls are moved in the direction of simultaneously distancing from each other when a work 9 in the chamber 3 is impregnated with a specified amount of impregnation materials 8b. Thereby inner volume of the chamber 3 in increased and the internal pressure is lowered so as rapidly to stop the impregnation treatment to the work 9.
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