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melt degassing

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Published: 30 September 2015
Fig. 4 Capacitance of sodium-reduced and electron beam melted, degassed-hydride tantalum powder. Thirty min anode sintering temperature at anode green densities commonly used for each powder 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: 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
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006535
EISBN: 978-1-62708-207-5
... on aluminum-silicon modification. aluminum alloys grain refinement melt degassing melt fluxing melt treatment melting cast aluminum alloys melting furnaces wrought aluminum alloys solid fluxes ALUMINUM AND ALUMINUM ALLOYS can be melted in a variety of ways. Coreless and channel induction...
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...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005300
EISBN: 978-1-62708-187-0
... or more of the following melting practices: Charging Skimming Cleaning Degassing Transferring Ladling Any of these melting practices causes the thin aluminum oxide films to break and reoxidize, causing rapid aluminum oxide film thickening (oxide buildup). The constant metal...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005199
EISBN: 978-1-62708-187-0
... metallurgy, which includes melt refinement in argon oxygen decarburization (AOD) vessels and vacuum oxygen decarburization (VODC) in a converter vessel. It also discusses ladle metallurgy, which includes vacuum induction degassing, vacuum oxygen decarburization, and vacuum ladle degassing. basicity...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005303
EISBN: 978-1-62708-187-0
... Abstract This article describes the casting characteristics and practices of copper and copper alloys. It discusses the melting and melt control of copper alloys, including various melt treatments to improve melt quality. These treatments include fluxing and metal refining, degassing...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005200
EISBN: 978-1-62708-187-0
.... It describes the VIM refinement process, which includes the removal of trace elements, nitrogen and hydrogen degassing, and deoxidation. The article concludes with information on the production of nonferrous materials by VIM. deoxidation trace elements vacuum induction melting electrodes refinement...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005900
EISBN: 978-1-62708-167-2
... vacuum degassing vacuum induction furnaces vacuum induction melting AT THE BEGINNING of the last century Wilhelm Rohn became a pioneer in the melting and treating of metals in the vacuum induction melting (VIM) furnace. But it took more than 30 years before vacuum-melting technologies could...
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Published: 01 December 2008
Fig. 29 Thermal energy balances for arc-heated and induction-heated processes. VAD/LF, vacuum arc degassing/ladle furnace; VID/VIM, vacuum induction degassing/vacuum induction melting More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005348
EISBN: 978-1-62708-187-0
... melting q fatigue notch sensitivity factor VIM/VID vacuum induction melting and  diameters (magni cation); multiplied by QT quenched and tempered r radius degassing Á multiplied by R stress (load) ratio; radius; gas constant VOD vacuum oxygen decarburization (ladle RE rare earth O ohm metallurgy) VODC...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003472
EISBN: 978-1-62708-195-5
.... Foundry scrap, gates, risers, and clean, uncoated parts can be grit or shot blasted, blown clean, and melted with new ingot. Since the production of castings often creates some oxides in the finished product, excessive amounts of recycled materials may contribute to excessive oxides in the melt, reducing...
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Published: 01 January 1990
Fig. 6 Particle shape of niobium powder made by electron beam melting, hydriding, crushing, and degassing. 250× More
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Published: 30 September 2015
Fig. 7 Particle shape of tantalum powder produced by electron beam melting, hydriding, crushing, and degassing. Courtesy of Prabhat Kumar More
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Published: 09 June 2014
Fig. 3 Three-stage production of electrosteel: melting, treating, and casting. LFR, ladle-furnace refining; VD, vacuum degassing; VOD, vacuum oxygen decarburization More
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Published: 09 June 2014
Fig. 10 Comparison of the volume of the vacuum chambers of the vacuum induction melting (VIM) and vacuum induction degassing and pouring (VIDP) furnaces. Courtesy of ALD Vacuum Technologies GmbH 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 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 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