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degassing

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Book Chapter

By David V. Neff
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005353
EISBN: 978-1-62708-187-0
... Abstract Gas porosity is a major factor in the quality and reliability of castings. The major cause of gas porosity in castings is the evolution of dissolved gases from melting and dross or slag containing gas porosity. Degassing is the process of removing these gases. This article describes...
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Published: 01 January 2001
Fig. 4 Degassing curve based on degassing for 20 min More
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Published: 01 January 1990
Fig. 4 Degassing can used for aluminum P/M processing. Source: Ref 2 More
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Published: 09 June 2014
Fig. 9 Sketch of the vacuum induction degassing and pouring (VIDP) furnace in melting and casting operation. Courtesy of ALD Vacuum Technologies GmbH More
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Published: 09 June 2014
Fig. 11 (a) Vacuum induction degassing and pouring (VIDP) furnace during casting operation. (b) Operation flexibility of the VIDP to be adapted for different casting systems. Courtesy of ALD Vacuum Technologies GmbH More
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Published: 01 August 2013
Fig. 18 Vacuum degassing apparatus for cold-mount preparation. Courtesy of Struers, Inc. More
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Published: 01 December 1998
Fig. 16 Schematic of a vacuum arc degassing plant layout. 1, transformer; 2, bus bars; 3, flexible cables; 4, electrode arms; 5, temperature-measuring and sampling device; 6, alloying lock; 7, electrode housing; 8, electrode masts; 9, operating platform; 10, lifting device for platform; 11 More
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Published: 01 December 1998
Fig. 17 Schematic of an in-line rotary degassing unit More
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Published: 30 November 2018
Fig. 4 Comparison between degassing methods versus flux injection/rotor dispersion degassing efficiency. Source: Ref 4 . Courtesy American Foundry Society More
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Published: 30 November 2018
Fig. 8 Various rotor designs employed in foundry degassing More
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Published: 30 November 2018
Fig. 9 Three-rotor spinning nozzle inert flotation degassing unit for wrought aluminum casting application. Courtesy of SNIF Systems, Pyrotek, Inc. More
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Published: 01 January 2001
Fig. 3 Orientation of mechanical stirring device and degassing tube for crucible-style furnace More
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Published: 01 December 2008
Fig. 21 Comparison of the effectiveness of solid degassing flux versus nitrogen purging. Source: Ref 18 More
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Published: 01 December 2008
Fig. 12 Schematic of the vacuum induction degassing and pouring furnace More
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Published: 01 December 2008
Fig. 26 Schematic of a combined ladle furnace (LF) and vacuum degassing (VD) plant. VOD, vacuum oxygen decarburization More
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Published: 01 December 2008
Fig. 27 Schematic of a vacuum arc degassing plant layout. 1, transformer; 2, bus bars; 3, flexible cables; 4, electrode arms; 5, temperature-measuring and sampling device; 6, alloying lock; 7, electrode housing; 8, electrode masts; 9, operating platform; 10, lifting device for platform; 11 More
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Published: 01 December 2008
Fig. 30 Treatment cycle of a 75 Mg (80 ton) vacuum arc degassing-heated melt. 1, tapping; 2, additions of C + Al + 0.5% CaO; 3, temperature check; 4, sampling and temperature check; 5, addition of 1.5% alloys + 0.5% CaO; 6, temperature check; 7, additions + 0.5% CaO; 8, degassing; 9, venting More
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Published: 01 December 2008
Fig. 31 Schematic of a vacuum induction degassing unit. (a) Top view. (b) Side view. 1, mold, die, or ladle; 2, charging device; 3, filter; 4, vacuum pumping system; 5, melt current supply; 6, vessel with vacuum bell; 7, gas-purging set; 8, cooling water manifold; 9, control cabinet; 10 More
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Published: 01 December 2008
Fig. 32 Effect of vacuum induction degassing (VID) processing on the (a) hydrogen, (b) nitrogen, and (c) total oxygen contents of X 38 CrMoV 51 die steel (Fe-0.38C-1.0Si- 0.40Mn-5.2Cr-1.3Mo-0.40V) More
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Published: 01 December 2008
Fig. 5 Degassing efficiency as a function of purge gas bubble size. Source: Ref 5 More