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WELDED ZIGZAG WINDINGS AND REFRACTORY SHAPES FOR HIGH‐TEMPERATURE FURNACES 1
Author(s) -
Navias Louis
Publication year - 1931
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.1151-2916.1931.tb16614.x
Subject(s) - tube (container) , electromagnetic coil , welding , zigzag , materials science , composite material , refractory (planetary science) , metallurgy , engineering , electrical engineering , geometry , mathematics
A brief account is given of published methods for making high‐temperature furnaces using W and Mo windings, placed both internally and externally with respect to the furnace tube. Several new methods of furnace construction are here mentioned:1 A furnace tube may be built up of a series of rings made of refractory substances for external windings. 2 A furnace tube may be built up of a series of tall and flat rings, alternately placed, made of refractory substances for an internal winding, the winding being threaded through small holes drilled in the flat rings. 3 A zigzag winding with welded joints has been developed for W and Mo wire. The winding may be conveniently sheathed with refractory tubes, as the winding runs the length of the furnace tube. The entire zigzag winding may be put in series, or divided into a split parallel winding, each type having its own advantages and faults. 4 Details of windings and refractories for furnaces reaching 1600°C and 2000°C are given. Windingq are protected from oxidation by hydrogen.