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AssigneeMassachusetts Institute of Technology
InventorsJung-Hoon Chun, Richard C. Lanza, Nannaji Saka
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A liquid metal/solid metal interface detecting device comprises in general a radiation source for generating gamma radiation, which is directed to pass through a strand extruded from a continuous casting mold. A detector detects the gamma radiation passing through the partially solidified strand to determine a spatial profile for a liquid metal/solid metal interface by relying on the different gamma radiation attenuation characteristics of the solid metal and the liquid metal. Preferably, the gamma radiation is at energies of greater than one million electron volts. In some embodiments, a movable support carries the radiation source and the detector and moves the radiation source and detector along and around the ingot enabling generation of a three-dimensional profile of the liquid metal/solid metal interface by utilizing tomographic imaging techniques. Alternatively, solidification at a single region is determined and this information is used to control the formation of the strand in process controller implementations.
In a continuous casting machine including a source of molten material, a continuous casting mold for casting the molten material, and a cooling zone, downstream of the continuous casting mold for cooling and solidifying material extruding from the mold, a device for imaging a liquid material/solid material interface in the partially solidified material comprising:
A device for imaging a liquid metal/solid metal interface in a partially solidified strand in a continuous casting machine, the device comprising:
A method for imaging a liquid metal/solid metal interface in a partially solidified strand extruding from a continuous casting mold, the method comprising:
Dependencies are inferred from the claim text.