Production of castings containing steel tubes
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United States of America Patent
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May 23, 1989
Issued Date -
N/A
app pub date -
Jul 27, 1982
filing date -
Jul 25, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a method and a set-up for production of castings containing cast-in steel tubes, preferably to provide cooling elements for metallurgical furnaces. The castings are from cast steel and the steel tubes are cast-in with a superheated cast steel melt. Before the casting the tubes are filled with a granular, highly thermal conductive, refractory material. In order to assure that the cast-in steel or respectively cooling tubes remain free from leaks, the invention provides to employ as a filling material one or more of the materials: burned magnesite (sintered magnesite), corundum, sintered aluminum oxide, chromite, silicon carbide, silicon nitride.
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