Crucible Melting Furnaces.A line of crucible-type aluminum melting furnaces featuring quiet "Buzzer" venturi venturi a tube with a decrease in the inside diameter that is used to increase the flow velocity of the fluid and thereby cause a pressure drop; used to measure the flow velocity (a venturimeter) or to draw another fluid into the stream. burners is available from Charles A. Hones. These furnaces offer the cleanliness of gas heat, operate economically, do not require the maintenance of compressed air compressed air, air whose volume has been decreased by the application of pressure. Air is compressed by various devices, including the simple hand pump and the reciprocating, rotary, centrifugal, and axial-flow compressors. and will continue to operate during power failures. The furnace consists of sectioned cast iron furnace a furnace for reducing iron from the ore, or for melting iron for castings, etc.; a forge; a reverberatory; a bloomery. See also: Iron rings and a steel jacket lined with insulating firebrick firebrick, brick that can withstand high temperatures, used to line flues, stacks, furnaces, and fireplaces. In general, such bricks have high melting points that range from about 2,800°F; (1.540°C;) for fireclay to 4,000°F; (2,200°C;) for silicon carbide. . The furnace cover and lid of insulating material are removable. Furnaces are complete with silicon carbide and graphite-bonded crucibles and are offered in standard sizes from 33.5-50 in. high and in diameters from 16-39 in. Larger or special sizes and tilting crucible and pot furnaces as well as alternate-energy models for melting brass, gold or silver can be built to order. |
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