Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1234960A
Inventor
George Joseph Nall Cherry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foseco International Ltd
Original Assignee
Foseco International Ltd
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Publication date
Application filed by Foseco International LtdfiledCriticalFoseco International Ltd
Priority to GB1234960ApriorityCriticalpatent/GB917228A/en
Publication of GB917228ApublicationCriticalpatent/GB917228A/en
C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
C21C7/10—Handling in a vacuum
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Chemical & Material Sciences
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Engineering & Computer Science
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Materials Engineering
(AREA)
Metallurgy
(AREA)
Organic Chemistry
(AREA)
Treatment Of Steel In Its Molten State
(AREA)
Abstract
Molten metal, e.g. steel, is degassed in a closed vessel, such as a ladle furnished with a gas-tight cover connected via a flexible tube to a vacuum pump, by applying a vacuum to the melt surface and imparting to the vessel a motion which sets up waves on the melt surface of such intensity that their crests become unstable and break up. The vessel is preferably subjected to an eccentric rotary motion, such as described in Specification 801,156, wherein the vessel is moved without rotation about its own axis along a circular path, e.g. 50-100 mm. diameter, with respect to a vertical axis, e.g. at a frequency of 50-100 cycles/minute.
GB1234960A1960-04-071960-04-07Method of treatment of molten metals
ExpiredGB917228A
(en)
Unusual technologies in metal working; National Conference, Timisoara, Rumania, October 14-16, 1971, Proceedings(Metal working technology- Conference, Timisoara, Rumania, October 1971)