Cylindrical Vacuum Chamber Wall Thickness

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.

Cylindrical vacuum chamber wall thickness.

A main flange with fitting lid allows access to the chamber a door hinge increases ease of use. Pressure vessels calculates the wall thickness of plain spheres of same material and equal wall thickness throughout. The material for both systems is black iron sheet. Chamber diameter wall thickness under 17 inches.

The door is frequently aluminum to reduce weight. Vacuum chamber design guide chamber wall thickness recommended minimum wall thicknesses are listed in the table below. 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. Thicker walled material should be specified for chambers with ports having angular tolerances of less than 1 2º or for processes that require large mass for vibration dampening.

This paper gives the methodology methods and hints for designing vacuum chambers. Asme viii only considers membrane stresses circumferential in a spherical vessel i e. Radial stresses are ignored which is considered reasonable given that the maximum. Any bulk container will naturally try to form a spherical shape under sufficient internal pressure.