Indutherm VC 400 LCD, Инструкция по эксплуатации

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86014010_04_OPERATING_MANUAL_VC400_LCD_GB.DOC 25.11.2016 KS
page 34
6.2 Diagram casting flasks without flange
6.3 Diagram casting flasks with flange
vacuum area
force of the air
pressure
force of the
overpressure
Possible problems of losing vacuum
1.) O-Ring vacuum chamber is
not OK.
2.) Flask top surface is not flat
enough.
3.) Silicon ring is missing or
defect.
4.)
Flask lift cylinder is not in “up”
position.
5.) By using overpressure on the
crucible area you need 8 bars
air pressure. With 6 bars
pressure the flask will move
down and the vacuum will be
lost.
6.) Flask has cracks.
vacuum
area
force of the
overpressure
Possible problems of losing vacuum
1.) Flask flange is not flat enough.
2.) Silicon ring is missing or
defect.
3.) Flask has cracks.