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Vacuum chambers

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Published: 01 March 2006
Fig. 10 Three-chamber cold-wall vacuum oil-quench furnace. Source: Ref 7 More
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Published: 01 March 2006
Fig. 11 Single-chamber batch-type pressure-quench vacuum furnace. Source: Ref 8 More
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Published: 30 April 2020
Fig. 7.23 Vacuum binder removal relies on a controlled gas leak into the chamber that causes gas flow over the heated components. The binder picked up by the gas flow is condensed in the chilled trap to avoid contamination of the vacuum pumps. More
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Published: 01 January 1998
Fig. 6-4 Schematic of a single-chamber batch-type pressure-quench vacuum furnace More
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Published: 01 January 1998
Fig. 6-5 Schematic of a typical in-line multiple-chamber vacuum furnace More
Series: ASM Technical Books
Publisher: ASM International
Published: 31 January 2023
DOI: 10.31399/asm.tb.itfdtktmse.t56060013
EISBN: 978-1-62708-440-6
...-enhanced CVD process temperature sputtering thin film purity vacuum ion plating Problem 1 Gas leaks into a vacuum chamber at a rate of 5 cm 3 atm sec −1 . The pump has a volumetric flow rate of 2000 liters sec −1 . Calculate the limiting achievable pressure. Solution P = Q / S...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900089
EISBN: 978-1-62708-350-8
...-cooling method. This method involves shutting off the plasma power and backfilling the chamber to a partial pressure with a nonreactive gas—usually clean, dry nitrogen (not metallurgical grade). The work will cool down somewhat faster than with the vacuum free-cooling method because...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900109
EISBN: 978-1-62708-358-4
... capabilities, and higher production rates, hot-wall vacuum furnaces have essentially become obsolete (with the exception of low-pressure chemical vapor deposition and ion-nitriding processes). Cold-Wall Vacuum Furnaces Vacuum furnaces now incorporate a heating unit inside a vacuum chamber...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 January 2023
DOI: 10.31399/asm.tb.itfdtktmse.9781627084406
EISBN: 978-1-62708-440-6
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740047
EISBN: 978-1-62708-308-9
..., crucible, and vacuum melting, and common casting techniques such as sand casting, plaster and shell casting, evaporative pattern casting, investment casting, permanent mold casting, cold and hot chamber die casting, squeeze casting, semisolid metal processing, and centrifugal casting. casting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930353
EISBN: 978-1-62708-359-1
... alloys are welded in vacuum-purged weld chambers that are backfilled with either argon or helium, or a mixture of the two gases. Tantalum can also be welded in a flush chamber when the parts to be welded cannot be shielded properly for open-air welding. Fluxes cannot be used because they cause weld...
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Published: 01 November 2010
Fig. 2.9 Vacuum infusion apparatus used for removing entrapped air in the mounting resin before it is added to the mold. In this apparatus, vacuum is maintained in the chamber. The mold is placed under the chamber, and a tube for resin transport is placed above the sample that connects More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900185
EISBN: 978-1-62708-350-8
... on the seal will attract dust. The amount of vacuum grease required is as much as it takes to make the tip of your finger look wet. It is not necessary to squeeze the grease from the tube into the palm of your hand. Wipe the seal clean before closing the process chamber and then apply the vacuum grease...
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Published: 01 October 2011
Fig. 5.18 Modern vacuum arc remelting (VAR) furnace. (a) 30-ton VAR. (b) Operational components: 1, electrode feed drive; 2, furnace chamber; 3, melting power supply; 4, busbars/cables; 5, electrode ram; 6, water jacket with crucible; 7, vacuum suction port; 8, X-Y adjustment; 9, load cell More
Image
Published: 01 November 2013
Fig. 9 Modern vacuum arc remelting (VAR) furnace. (a) 30 ton VAR. (b) Operational components: 1, electrode feed drive; 2, furnace chamber; 3, melting power supply; 4, busbars/cables; 5, electrode ram; 6, water jacket with crucible; 7, vacuum suction port; 8, X - Y adjustment; 9, load cell More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280041
EISBN: 978-1-62708-267-9
... is to be poured are put inside the furnace at the beginning of the melt. (A single-chamber furnace must thus be opened after each heat to extract the molds and put in the new molds.) Most furnaces have some system of large vacuum locks for transferring the prepared molds into the melt chamber. In some furnaces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120065
EISBN: 978-1-62708-269-3
... such as an inert, gas-filled, large Mylar bag in which the welding is performed. With the arc and laser welding processes, protection of the weld zone can be provided by localized inert gas shielding. Complete enclosure in a protective chamber of the high-vacuum environment associated with the electron beam...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 January 2023
DOI: 10.31399/asm.tb.itfdtktmse.t56060001
EISBN: 978-1-62708-440-6
... to as physical vapor deposition (PVD) processes, rely on advanced equipment to remove a thin film material from a solid source, transmit it through a vacuum, and deposit it onto a nearby substrate material. Figure 1 ( Ref 2 ) presents a schematic of a basic PVD deposition chamber. The substrate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030023
EISBN: 978-1-62708-349-2
... the sample surface so it will not contact the grinding and polishing surfaces. Fig. 2.9 Vacuum infusion apparatus used for removing entrapped air in the mounting resin before it is added to the mold. In this apparatus, vacuum is maintained in the chamber. The mold is placed under the chamber...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
... well suited to heat treating of nonferrous metals. Vacuum Furnaces Heating of metal parts in a vacuum furnace consists of carrying out various thermal operations in a heated chamber evacuated to a vacuum pressure suitable to the particular material and process desired. Although originally...