1-20 of 70 Search Results for

crucible melt furnaces

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 May 2018
DOI: 10.31399/asm.tb.hma.t59250073
EISBN: 978-1-62708-287-7
... to improve tool performance. FIG. 6.1 Teeming by Robin Bell, in honor of clockmaker Benjamin Huntsman. A group of foundrymen cast molten steel from a crucible into a mold. Source: Malcolm Campbell. FIG. 6.2 Crucible melting furnace, circa 1829. This is the oldest example of the Benjamin...
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
... the furnace or, more commonly, by charging the furnace through hoppers lowered through a large vacuum lock (bulk charger) located over the crucible. The furnace is capable of quickly pumping down to or maintaining vacuum levels below 100 μm (and often into the <10 μm) range. The virgin material is melted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... techniques as briefly described in this chapter. Melting can be performed using several different processes. Traditional melting methods include (but are certainly not limited to) crucible furnace melting, electric arc furnace (EAF) melting, induction melting, and vacuum induction melting (VIM). Molten...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220001
EISBN: 978-1-62708-341-6
... of induction to heating of electrical conductors was realized. The first major application was melting of metals. Initially, this was done using metal or electrically conducting crucibles. Later, Ferranti, Colby, and Kjellin developed induction melting furnaces which made use of nonconducting crucibles...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460173
EISBN: 978-1-62708-285-3
... Wire-feed melting Crucible Melting Crucible melting of the feedstock can be performed by any of several heating techniques; again, the most common is induction heating. Once the material is fed into the crucible, the furnace is evacuated and flooded with protective gas. The metal feedstock...
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
... reactions in the molten metal bath) and treating the metal (adding small amounts of materials that affect the nucleation and growth of the solid during solidification). Induction Melting Cupola Melting Arc Furnaces Crucible Melting Reverberatory Furnaces Vacuum Melting Casting methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230253
EISBN: 978-1-62708-298-3
..., aluminum, silicon, and copper content occurred. Kura et al. [1949] also used beryllia crucibles; however, they employed a tilt-pour induction furnace, shown in Fig. 18.5 . One disadvantage was that dross was inductively stirred into the melt, resulting in poor microcleanliness. Gas porosity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... data comparing Ti-6Al-4V cast and cast + hot isostatic pressed (HIP) material with annealed ingot metallurgy material Fig. 8.9 Consumable electrode titanium vacuum arc melting furnace with centrifugal casting table. Courtesy of Howmet Fig. 8.12 Ceramic mold. Courtesy of TiLine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740001
EISBN: 978-1-62708-308-9
... a melting crucible inside a steel shell that is connected to a high-speed vacuum system ( Fig. 6 ). The heart of the furnace is the crucible ( Fig. 7 ) with heating and cooling coils and refractory lining. Heating is done by electric current that passes through a set of induction coils. The coils are made...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220281
EISBN: 978-1-62708-341-6
... ), with a quartz liner in the case of silicon and gallium arsenide. Impurities are added to the crucible in controlled amounts to produce the desired electrical characteristics. The material is brought to its melting temperature, and a seed crystal of the proper orientation is inserted into the melt, rotated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420239
EISBN: 978-1-62708-310-2
..., as a last resort, to use the experimental alloy as its own “crucible” by melting a pool in its top surface with a fine torch or other concentrated source of radiated heat. For constitutional studies at temperatures below the melting point, alloys that cannot be maintained in a satisfactory state of purity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410009
EISBN: 978-1-62708-265-5
..., Bessemer patented a process in which hot air was blown through molten pig iron to reduce carbon and silicon content; in 1858, Siemens first successfully operated an open hearth furnace in which solid or liquid pig iron and scrap were melted with combusted producer gas. In later modifications, the oxygen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230093
EISBN: 978-1-62708-298-3
... H. , 1923 . Untersuchungen über Hydrate in Wäβriger Lösung. I. Mitteilung. Das Berylliumion , Z. Anorg. Chem. , Vol 131 , p 130 – 139 10.1002/zaac.19231310111 Furby E. , and Wilkinson K.L. , 1960 . The Melting and Boiling Points of Beryllium Chloride and an Investigation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410029
EISBN: 978-1-62708-280-8
... machine is provided with a holding furnace filled periodically by a distribution ladle that transfers metal from a central melting furnace. Fig. 4.6 Die casting cell elements Castings extracted are cooled either in a water quench tank or a forced air cooling tunnel. Warm castings move...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... the host alloy, there is a tendency for the particulate to sink to the bottom of the furnace or crucible. Turbulence during casting must be minimized to avoid entrapping gas. By heeding these general guidelines, MMC ingots can be successfully remelted and cast using the current casting methods mentioned...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140047
EISBN: 978-1-62708-335-5
... in furnace atmospheres allowing atomic hydrogen diffusion into the melt. Turbulence, whether in melt treatment or in pouring can rapidly accelerate the rate at which hydrogen from atmospheric moisture is absorbed and coincidentally is responsible for degradation of the liquid melt after effective treatment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220009
EISBN: 978-1-62708-259-4
... conditions inside the furnace made it possible for the iron to dissolve a large amount of that element ( Ref 4 ), significantly lowering the metal melting point (refer to Fig. 1.3 ). Liquid iron produced this way is rich in carbon and contains undesirable impurities, leading to a product with somewhat...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170550
EISBN: 978-1-62708-297-6
... alloys. Sheet thickness: 1 mm (0.04 in.) in air Typical applications for dispersion-strengthened platinum alloys include furnace windings, heater tapes and ignition coils, glass processing equipment, and crucibles for holding molten minerals and ceramics. A particularly important industrial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220085
EISBN: 978-1-62708-341-6
... currents that are induced in an electrical conductor (the charge to be melted) by suitably coupling it with a coil carrying an alternating current. Various coil and crucible designs are used for induction melting. The two most common are referred to as the coreless furnace ( Fig. 6.19 ) and the channel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060001
EISBN: 978-1-62708-261-7
...-frequency induction furnace for nonferrous melting. 1916 : Dr. Edwin Northrup of Princeton University invents the coreless induction furnace. 1917 : Alcoa completes a great deal of early development work in aluminum as World War I generates a large demand for high-integrity castings for aircraft...