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molten-metal transfer pumps

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005352
EISBN: 978-1-62708-187-0
... furnaces or transport crucibles, molten-metal transfer pumps, teeming ladles, and dosing and pouring furnaces. degassing pouring furnaces molten-metal treatments fluxing molten-metal filtration launders tundishes holding furnaces transport crucibles molten-metal transfer pumps teeming...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005350
EISBN: 978-1-62708-187-0
... in ratio! Molten Metal Circulation In the melting of aluminum and its alloys, forced convectional heat transfer within the melt often plays an important role. There is a considerable latent heat of fusion (95 cal/g) associated with taking aluminum at its melting point from a solid to a liquid...
Image
Published: 01 December 2008
Fig. 5 Molten-metal pumps with ceramic posts and steel tension rods. (a) Recirculation pump. (b) Transfer pump. (c) Pump elements. Courtesy of Metaullics Inc. More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005285
EISBN: 978-1-62708-187-0
... temperature difference between the heat source and the melt, resulting in greater heat transfer and hence faster melting practice. This is accomplished by convectional burners, by melt stirring, and, in larger furnaces, by application of molten-metal pumping. This allows heat to be more effectively...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003173
EISBN: 978-1-62708-199-3
... furnaces are channel furnaces and coreless furnaces. Channel Induction Furnaces In channel induction furnaces ( Fig. 1 ), a small channel of molten metal surrounds the inductor coil. Only the small amount of metal in the inductor channel receives enough energy to be heated, and it is pumped out...
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
... efficient than ever before. Many of the newer furnaces can reach an energy efficiency capability of 1250 Btu/lb of metal melted, especially when molten metal circulation pumps are employed. Typical capacity of the furnace can range widely, from 1 to 75,000 tons. The energy efficiency of reverberatory...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006484
EISBN: 978-1-62708-207-5
.... When the molten metal reaches the desired temperature, it is either pumped out or tapped from a hole in the side. Burners are mounted in the opposite end of the furnace from the charge door; mounting the flue near the charge door gives hot combustion gases more chance to transfer energy to the melt...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003594
EISBN: 978-1-62708-182-5
... serve as high-temperature reducing agents in the production of metals (such as the use of molten magnesium to produce titanium), and, because of their excellent heat- transfer properties, liquid metals have been used or considered as coolants in a variety of power- producing systems. Examples...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005265
EISBN: 978-1-62708-187-0
... countergravity low-pressure vacuum process vacuum process THE METHOD of countergravity mold filling has been practiced for many years. The technique is the result of applying a differential pressure between the molten metal and the mold to be filled, much like a soda straw is used to drink a liquid. During...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005351
EISBN: 978-1-62708-187-0
... in front of a transfer pump to provide first-stage filtering. This first-stage filtering, which lessens the burden on downstream filtering processes, minimizes entrainment of sludge and other debris associated with melting foundry returns and other materials with a high inclusion content. The molten metal...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005745
EISBN: 978-1-62708-171-9
... of the areas associated with production and transfer of molten glass. Precious Metals Precious metals such as platinum and certain of their alloys are used extensively for long-term contact with molten glass. The industry is possibly the single largest consumer of platinum and is accustomed to measuring...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005646
EISBN: 978-1-62708-174-0
... term for any J of molten metal in large drops from a con- brazing process that takes place in a hydro- J-groove weld A type of groove weld. sumable electrode across the arc. See also gen atmosphere. joint The junction of members or the edges of short circuiting transfer and spray transfer. I members...
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001369
EISBN: 978-1-62708-173-3
..., by the size of the vacuum chamber employed. Consequently, the production rate (as well as unit cost) is affected by the need to pump down the chamber for each production load. Because the electron beam is deflected by magnetic fields, nonmagnetic or degaussed metals must be used for tooling and fixturing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003198
EISBN: 978-1-62708-199-3
... mechanical Such furnaces are built to handle large, heavy heating surface should be large enough to effect pumps. a rapid transfer of heat. loads and are cooled rapidly by a high-velocity Diffusion Pumps. For pumping at a vacuum- internal or external circulating gas system. Resistance heating elements...
Book Chapter

By J.R. Keough
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005820
EISBN: 978-1-62708-165-8
... at a regulated rate into a vigorously agitated area of the molten bath. In installations where the salt is pump circulated, returning salt is cascaded into the quench zone. A controlled fine stream of water may be injected into the cascade of returning salt. The austempering bath may be kept saturated...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005318
EISBN: 978-1-62708-187-0
... the valve to prevent metal from filling the vacuum system. The accumulator is then pumped down for the next cycle. Overflows can also act as a reservoir for molten alloy that has flowed through the cavity. One method of removing entrained gas from the cavity relies on the transfer of some of the gas...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005205
EISBN: 978-1-62708-187-0
... to a ladle of molten metal to either maintain the temperature or raise the temperature of the melt. For numerous steel grades, especially those with extremely low carbon contents, plasma arc ladle heating is an alternative to heating with graphite electrodes and the risk of carbon pickup. High-power plasma...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005615
EISBN: 978-1-62708-174-0
..., this high-purity vacuum environment is particularly beneficial when welding refractory metals, because these materials are prone to embrittlement by interstitial atoms from the atmosphere, such as nitrogen and oxygen. The process (or energy transfer) efficiency, which is defined as the power...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004218
EISBN: 978-1-62708-184-9
... Abstract The high-temperature corrosion processes that are most frequently responsible for the degradation of furnace accessories are oxidation, carburization, decarburization, sulfidation, molten-salt corrosion, and molten-metal corrosion. This article discusses each corrosion process, along...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.9781627081740
EISBN: 978-1-62708-174-0