B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/158
B22C 9/00 (2006.01) B22D 7/06 (2006.01) B23P 6/04 (2006.01)
Patent
CA 1071832
ABSTRACT OF THE DISCLOSURE The invention provides a method of repairing a bottom plate of an ingot mould containing a cavity, comprising locating an exothermic composition in the cavity and igniting the composition to initiate an exothermic reaction with the formation of a molten slag, and including the step of locating an enclosure to surround the cavity at least during the exothermic reaction, thereby to confine fume from the reaction to a zone defined by the enclosure.
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