Chamber diameter wall thickness under 17 inches.
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.
A main flange with fitting lid allows access to the chamber a door hinge increases ease of use.
This paper gives the methodology methods and hints for designing vacuum chambers.
Radial stresses are ignored which is considered reasonable given that the maximum.
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.
Vacuum chamber design guide chamber wall thickness recommended minimum wall thicknesses are listed in the table below.
The material for both systems is black iron sheet.
The door is frequently aluminum to reduce weight.
Asme viii only considers membrane stresses circumferential in a spherical vessel i e.
The d shape chamber when viewed from above combines the thin wall of the cylindrical chamber with the volume and large o ring sealed access door of the box chamber making it appropriate for high vacuum applications.
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.
Any bulk container will naturally try to form a spherical shape under sufficient internal pressure.