The material for both systems is black iron sheet.
Cylindrical vacuum chamber wall thickness.
Chamber diameter of 600 mm requires a flat bottom about three times the wall thickness as of a dished end.
The door is frequently aluminum to reduce weight.
Producing a vacuum chamber means de fining the boundary conditions inner and outer envelopes operational constraints etc choosing the material designing the parts manufacturing and assembling these parts together and putting them under vacuum.
Asme viii only considers membrane stresses circumferential in a spherical vessel i e.
Thicker walled material should be specified for chambers with ports having angular tolerances of less than 1 2ยบ or for processes that require large mass for vibration dampening.
Chamber diameter wall thickness under 17 inches.
Chamber feet on the outside ensure stability eye bolts or hoisting shackles allow safe transport.
Any bulk container will naturally try to form a spherical shape under sufficient internal pressure.
A main flange with fitting lid allows access to the chamber a door hinge increases ease of use.
Radial stresses are ignored which is considered reasonable given that the maximum.
Vacuum chamber design guide chamber wall thickness recommended minimum wall thicknesses are listed in the table below.
This paper gives the methodology methods and hints for designing vacuum chambers.