Relationship between Cover Material and Pouring Weight for Inserting Ceramics Bar into Cast Iron
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Accession number;05A0969963
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| Title;Relationship between Cover Material and Pouring Weight for Inserting Ceramics Bar into Cast Iron |
| Author;
TOMITA YOSHIHIRO
(Kinki Univ., Faculty of Sci.and Engineering, JPN)
SUMIMOTO HARUYOSHI
(Kinki Univ., Faculty of Sci.and Engineering, JPN)
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Journal Title;Journal of Japan Foundry Engineering Society
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Journal Code:G0096A
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ISSN:1342-0429
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VOL.77;NO.11;PAGE.738-743(2005)
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| Figure&Table&Reference;FIG.12, TBL.2, REF.14 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;A technique was developed to insert a ceramic bar into cast iron using a flake graphite cast iron cover without preheating the bar. This technique allows the heat energy of the molten metal to be utilized to produce cast iron products which are added with functions of ceramic materials. Excellent results were obtained by using a method whereby a ceramic bar is covered with a flake graphite cast iron cover and fixed in a sand mold and then molten metal is poured. However, since there are applications whose purposes require the use of spherical graphite cast iron (FCD) instead of flake graphite cast iron (FC), there can be different combinations of molten metal and cover material in practice. In this study, experiments were conducted using a number of combinations of molten metal and cover material including combinations that use FCD, which differs in characteristics from FC, for the molten metal, cover material and both, to examine and analyze the effects of each combination on the insert casting. From these experiments, a molten metal quantity range was found within which all of the combinations of cover material and molten metal of FC and FCD produced an excellent insert casting result. It was also found that the molten metal quantity (weight) range within which good insert casting result can be obtained with molten metal of FCD was wider than that within which good insert casting results can be obtained with molten metal of FC. It was shown that this was because of the lower rate of increase in the temperature of the ceramic bar due to the higher surface tension and lower thermal conductivity of FCD. (author abst.) |
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