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Synthetic Mica Investigations: III, Precision‐Controlled Electric Furnaces for Temperatures to 1500°C
Author(s) -
HUMPHREY R. A.,
WORDEN E. C.
Publication year - 1954
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1954.tb14022.x
Subject(s) - schematic , wiring diagram , silicon carbide , block diagram , circuit diagram , controller (irrigation) , materials science , nuclear engineering , crystallization , diagram , mechanical engineering , process engineering , metallurgy , thermodynamics , electrical engineering , computer science , engineering , physics , database , agronomy , biology
Three furnaces using silicon carbide heating elements are described, including (1) a utility furnace for melting and testing, (2) a precisioncontrolled (± 1/2°C.) crystallization furnace, and (3) a rectangular crystallization furnace. Schematic drawings of the furnaces and a simplified wiring diagram for the heating elements are included. One composite controller is described from a functional viewpoint, with a block‐diagram presentation. A complete circuit diagram of this controller also is incorporated. The use of saturable core reactors in regulating power to electric furnaces is advocated; reactors permit the control of electricity in a manner similar to adjustment of the flow of water by means of a valve.