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US 4,140,300 AGranted
Supervising casting flow
AssigneeMannesmann Aktiengesellschaft
InventorsHans Gruner, Karlheinz Koch, Josef Glaser, Hartwig Matzner
Life of this patent
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Abstract
A stream of molten metal is monitored as to emitted radiation to detect the onset of inclusion of slag for stopping the stream.
Claims5
Method of supervising the discharge of molten metal from a casting vessel through a protective tube having a side duct, comprising the steps of:
- detecting the radiation intensity of the metal as poured from the vessel through said tube, by observing through the side duct the metal as poured;
- and
- using a change in detected radiation intensity as indication of inclusion of slag in the metal as poured and observed.
Apparatus for supervising the discharge of molten metal from a casting vessel through a protective tube, comprising:
- a lateral duct extending from but open to the interior of said protective tube permitting observation of the metal as poured through the tube;
- a radiation sensitive element disposed at said lateral duct for detecting the radiation intensity of the metal as poured from the vessel through said tube;
- and
- means being responsive to a change in detected radiation intensity as indication of inclusion of slag in the metal as poured.
1 more element
Dependencies are inferred from the claim text.