Gas concrete mold runner and method of use
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United States of America Patent
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-
Feb 17, 1981
Grant Date -
N/A
app pub date -
Apr 20, 1978
filing date -
Apr 28, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and an apparatus is provided for casting molten metallic materials through runners in the form of casting gates, flow-through tubes, feeders, rising gates and the like. The method basically comprises casting the molten metals through runners defined by bodies of porous calcium hydro-silicate such as gas concrete. A filler, such as quartz, may be used. The runner bodies are formed of gas concrete and provided with a moisture ratio of 3 to 30% so as to afford progressive evaporation of the moisture during casting to thereby produce a cooling effect on the runner walls. The runner bodies can be reinforced.
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