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A vacuum table is similar to a "Magnetic Clamping Table" in use, typically, to the same end as a vacuum table except instead of vacuum, the magnetic table uses electromagnetic attraction to restrain ferrous materials to the table facilitating ease of access for modern machining. A vacuum table, of course, is not limited to ferrous materials.
A self-centering chuck, also known as a scroll chuck, [2] uses jaws, interconnected via a scroll gear (scroll plate), to hold onto a tool or workpiece. Because they most often have three jaws, the term three-jaw chuck without other qualification is understood by machinists to mean a self-centering three-jaw chuck.
This is an accepted version of this page This is the latest accepted revision, reviewed on 31 December 2024. Manufacturing processes This section does not cite any sources.
Materials may sublimate in vacuum (this includes some metals and their alloys, most notably cadmium and zinc). Or the gases can be released from porous materials or from cracks and crevices. Traces of lubricants, residues from machining, can be present on the surfaces. A specific risk is outgassing of solvents absorbed in plastics after cleaning.
In tubes used in electronics, the getter material coats plates within the tube which are heated in normal operation; when getters are used within more general vacuum systems, such as in semiconductor manufacturing, they are introduced as separate pieces of equipment in the vacuum chamber, and turned on when needed. Deposited and patterned ...
The etching line is a multi-chambered machine that has driven-wheel conveyors to move the plates and arrays of spray nozzles above and below the plates. The etchant is typically an aqueous solution of acid, frequently ferric chloride, that is heated and directed under pressure to both sides of the plate. The etchant reacts with the unprotected ...
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The Joint European Torus and DIII-D tokamaks' vacuum vessels are made of Inconel. [43] Inconel 718 is commonly used for cryogenic storage tanks, downhole shafts, wellhead parts, [ 44 ] and in the aerospace industry -- where it has become a prime candidate material for constructing heat resistant turbines.
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