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vacuum arc remelting

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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 March 2002
Fig. 4.16 Vacuum arc remelting pool depth vs. melt current More
Image
Published: 01 November 2013
Fig. 8 Key components of a vacuum arc remelting furnace. Source: Ref 6 More
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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
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Published: 01 December 2000
Fig. 4.4 Schematic of a vacuum arc remelting furnace 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
... oxygen decarburization melting, vacuum induction melting, vacuum arc remelting, and electroslag remelting. It also addresses related issues such as consumable remelt quality, control anomalies, melt pool characteristics, and melt-related defects, and includes a section that discusses the processes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... Abstract Casting is the most economical processing route for producing titanium parts, and unlike most metals, the properties of cast titanium are on par with those of wrought. This chapter covers titanium melting and casting practices -- including vacuum arc remelting, consumable electrode arc...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740001
EISBN: 978-1-62708-308-9
... induction melting furnaces, and electroslag and vacuum arc remelting furnaces. It also covers casting, rolling, and annealing procedures and describes the basic steps in aluminum and titanium production. primary metal production rolling steel refining A GENERAL DIAGRAM for the production...
Image
Published: 01 January 2015
. VAR, vacuum arc remelting; PAM, plasma arc melting. Courtesy of K. Akhtar, Armstrong/Crystal, Sept 2013 More
Image
Published: 01 March 2002
Fig. 4.2 IN-718 nickel-base superalloy showing (a) pseudobinary phase diagram for niobium, (b) dendritic ingot structure produced by vacuum arc remelting (VAR), and (c) niobium distribution in trace perpendicular to dendrite More
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Published: 01 January 2015
Fig. 19.8 Influence of sulfur content and steelmaking practice on temperature ranges for overheating and burning. Steelmaking practices are: consumable-electrode vacuum arc remelted (CEVAM), basic-electric (BE), and open-hearth (OH). Source: Ref 19.22 More
Image
Published: 01 March 2002
Fig. 4.1 Freckles in IN-718 nickel-base superalloy billet forged from vacuum arc remelted ingot in which control of melt conditions was lost. Note: Composition of freckle vs. matrix was by microprobe and does not show carbon, which would be elevated in the freckles. Compositions More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120025
EISBN: 978-1-62708-269-3
..., which may be remelted several times to achieve the necessary properties. It also discusses the cause of defects and ingot imperfections and the benefits of billet reduction and grain-refinement processes. billets ingots mill products titanium alloys titanium sponge vacuum arc remelting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310155
EISBN: 978-1-62708-286-0
...) are achievable commercially. Use of VIM is generally limited to high-value, high-purity, or low-tonnage melts. Remelting Some stainless steels and related alloys are remelted to refine composition or ingot structure. There are two principal remelt processes: vacuum arc remelting (VAR) and electroslag...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900029
EISBN: 978-1-62708-358-4
... steel applications where the end user is willing to pay the extra cost for premium ESR quality. Vacuum Arc Remelting (VAR) Vacuum arc remelting (VAR) is a companion process to ESR, which has limited application to tool steels. Like ESR, VAR is a progressive solidification process that results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... (ESR) and vacuum arc remelting (VAR). These operations can be performed after primary melting and solidification are completed to further refine the microstructure of the material. The process of solidification can be achieved using a wide variety of casting technologies—either for the primary...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200187
EISBN: 978-1-62708-354-6
... Abstract This chapter provides an overview of the types of melting furnaces and refractories for steel casting. It then presents information about arc furnace melting and induction melting cycles. The chapter also describes methods for the removal of phosphorous, the removal of sulfur...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230253
EISBN: 978-1-62708-298-3
... that, economically, the most attractive production process for obtaining high-purity product for fabrication is to use both VIM and vacuum arc remelting (VAR). The second VAR step reduces both impurities and grain size and removes cast inhomogeneities associated with induction-melted product. The double melting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030245
EISBN: 978-1-62708-349-2
... that are affordable, repairable, and maintainable ( Ref 2 ). Metal aircraft structures have relatively high electrical conductivity, which permits lightning currents to readily pass through to ground. The high electrical current of the lightning arc can cause remelting and rapid quenching of the metal alloy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170234
EISBN: 978-1-62708-297-6
...) maraging steels Heat treatment: solution heat 1 h at 815 °C (1500 °F), then age 5 h at 480 °C (900 °F). Testing was conducted on 63.5 × 88.9 mm (2.5 × 3.5 in.) billets produced from 200 mm (8 in.) diam vacuum induction melted/vacuum arc remelted ingots. Grade Ultimate tensile strength 0.2% offset...