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are frequently produced using this process. The VIM process is often used for small batch sizes and allows for a high level of control over the composition of the alloy. There is low environmental contamination (dust etc) and oxidation, while elements that are often undesired such as hydrogen or
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VIM involves placing a core-less induction furnace into a vacuum chamber. The melting and casting operations are carried out at low pressures to control the entire alloy chemistry process.
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Patent DE 345161, Vacuumschmelze and Dr. Wilhelm Rohn, Verfahren zum
Vakuumschmelzen und Vergueten von Metallen und Legierungen, priority date 12 January 1918, published 12 June 1921.
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http://md1.csa.com/partners/viewrecord.php?requester=gs&collection=TRD&recid=8512511577MD&q=vacuum+induction+melting&uid=792184177&setcookie=yes
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VIM is used in particular for producing alloys with melting points beyond those practical for other kinds of melting. Nickel, nickel-iron, and
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create heating effects to melt the metal. Vacuum induction melting has been used in both the aerospace and nuclear industries.
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applied for a patent on vacuum melting on 12 January 1918 and were granted a German patent DE 345161.
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built the first prototype of a vacuum induction furnace in the United States of
America in 1920.
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86:. As these metals and alloys became more common, the process of VIM became more widely used.
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Medium frequency furnaces were seen soon afterwards in
England and Sweden in 1927.
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VIM now helps to melt a variety of metals for aircraft and nuclear applications.
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The process was initially developed to refine certain special metals such as
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The process was invented in Hanau, Germany in 1917.
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42:. The first prototype was developed in 1920.
120:nitrogen can be removed from the process.
201:"Consarc | Vacuum Induction Melting"
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46:induces eddy currents within conductors.
143:History of Induction Heating and Melting
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171:"Vacuum Induction Melting and Casting"
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242:. ASM Handbook. Vol. 15. 2008.
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240:Casting , Vacuum Induction Melting
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140:MĂĽhlbauer, Alfred (2008).
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28:Vacuum induction melting
18:Vacuum induction furnace
270:Metallurgical processes
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38:to melt metal within a
60:Heraeus Vacuumschmelze
70:Edwin Fitch Northrup
249:978-0-87170-711-6
153:978-3-8027-2946-1
101:Induction heating
44:Induction heating
36:electric currents
16:(Redirected from
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177:. 4 July 2002.
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48:Eddy currents
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209:. Retrieved
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64:Wilhelm Rohn
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34:) utilizes
211:2011-10-04
124:References
93:Procedure
264:Category
175:azom.com
62:and Dr.
54:History
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84:nickel
80:cobalt
40:vacuum
244:ISBN
148:ISBN
111:Uses
82:and
32:VIM
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