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Special refractories for use at high temperature - NIST Page

temperature higher than that at which they are to be used. The. Arsem vacuum furnace and the high-frequency^ induction furnace have been used to fire crucibles to temperatures in the range 1,700° to 2,000° C. In the latter type of furnace,a hollow cylinder of graphite placed around the refractory crucible within the inductor.

Instruments > Glass Melting Furnace - Orton Ceramic

The Orton Model GMF-1700 glass melting furnace is a large sample batch melter designed for formula development and product improvement. The maximum continuous service temperature of the hot zone is 1700C and the maximum crucible size can accommodate approximately 2000 grams of molten glass. The bottom

VIM 02 - VIM 100 - ALD Vacuum Technologies

melting and casting process via sight glass. Vacuum Induction. Melting and Casting. VIM 02 to VIM 100. Standard VIM Furnaces. ALD's vacuum induction melting and casting furnaces of the VIM 02 to VIM 100 Availabe for all furnaces, for example, are. O Additional coils to be used for diferent melt materials and crucible.

Vacuum Induction Melting - ASM International

tially fixed by choice of the initial charge materials, and these materials are inevitably higher-priced than those that are used in arc-AOD. Process Description. A VIM furnace is simply a melting crucible inside a steel shell that is connected to a high- speed vacuum system (Fig. 1). The heart of the furnace is the crucible (Fig.

MELTING AND CASTING ZIRCONIUM METAL 1, 2 - CiteSeerX

:Reference is made to the manner of heating, furnace design, crucible materials, and used. Preference is given the latter for vacuum fusion, while the high- frequency and the arc furnaces are well adapted for melting in a noble gas atmosphere. . proposed using the same type of glass-vessel furnace in melting thorium.

Industrial glass - Glassmaking in the laboratory | Britannica

For smaller production rates, day tanks or unit melters are used. In the large melting chambers, the tank is made of high-density, highly corrosion-resistant refractory materials, such as electrocast alumina-zirconia-silica, to ensure a trouble-free service life of 5 to 10 years. Figure 8: Schematic diagram of a glass-melting

Energy Efficiency of Microwave Melting - American Foundry Society

high temperature metals like titanium over current melting processes such vacuum arc re- melting . microwave possible is based on the fact that certain materials are receptors of microwave energy. Figure 2-1. Technikon 6 kW Microwave Melt. Furnace .. furnace is commonly used for the heat treatment/melting of metals.

Melting and Refining of Gold - Springer Link

There are four types of furnaces used by gold producers to melt pre- cipitates and Induction furnaces. All four types of furnaces are fired and operated on an intermittent basis, and are very seldom kept warm all the time. The graphite crucible and the induction reliable and accepted sampling is with a glass vacuum tube.

the vacuum casting of uranium - Wiley Online Library

Uranium was perhaps the first metal to be melted and cast under covered by a glass plate on a rubber seal and used for observation of the operator to lift the sealing bung from its seat on the bottom of the crucible. The Vacuum System. (a) Pumping System. In the original construction of the furnace, two H.6 oil-diffusion

"self heating" ceramics as crucibles , for microwave melting metals

were both used to vitrify and homogenize mixtures of simulated nuclear waste and glass frit. The SiCfor the crucibles and the muffle furnace was housed in MELTING METALS. Metals can be heated, melted or reacted with other materials in a microwave cavity by placing the metal in a SiC crucible or other ceramic.