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METALLURGICAL STUDY OF CAST IRON FOR GLASS MOLDS *
Author(s) -
Bruckner W. H.,
Czyzewski H.
Publication year - 1942
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.1151-2916.1942.tb14325.x
Subject(s) - metallurgy , cast iron , cracking , materials science , alloy , annealing (glass) , molybdenum , composite material
A bstract Research data are reported on the susceptibility of cast iron to cracking when it is used in molds for processing glassware. An accelerated test was run to produce cracking in a shorter time than would occur in the production of glassware. The results from this test indicate that sand‐cast iron is more resistant to cracking than chill‐cast iron of the same composition. The alloyed chill‐cast irons, however, cracked less severely than the unalloyed iron. An annealing heat‐treatment of these irons increased resistance to cracking, whereas a spheroidizing heat‐treatment reduced resistance. A maximum resistance to cracking together with the ability of the iron to take a high polish apparently may be obtained by using an annealed, chill‐cast alloy iron containing chromium, nickel, and molybdenum. Such iron is more susceptible to cracking than a sand‐cast iron of the same composition, but the latter type is incapable of a sufficiently high polish and usually has an open, porous structure.