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AssigneeTri-C Corporation
InventorsWalter A. McCray, Michael D. Cope, Thomas J. Connors, Alex Csaszar
Estimating the term…
A dart-assembly for piercing open a blockage in the opening of a ladle for holding and transporting molten steel is mounted in the outlet bore of a slide-gate associated with the ladle opening. The assembly has an outer steel housing; mounted within the housing is a dart-member having an elongated rod, which rod has a lower threaded end for receiving a threaded nut. The upper end of the rod is provided with a dart-like head-portion which actually contacts and pierces through the blockage in the opening of the ladle when the dart-member is fired. A compression spring is telescopingly mounted about most of the length of the elongated rod of the dart-member, between the enlarged dart-like head-portion and the upper, flat-surface of a stop member. A restraining nut is screwed onto the lower, threaded end of the elongated rod of the dart-member, whereby the dart-member is prevented from being fired until the restraining nut is removed, which removal occurs only after the assembly has been emplaced within the outlet-bore of a slide-gate associated with the ladle. The open, upper top of the housing is closed off by a pivotal flap, which flap is pivoted open to allow for the firing of the dart-member only when the slide-gate has been moved to its completely open position where its bore is in complete alignment with outlet-bore of the well-block.
In a ladle for holding and transporting molten material, said ladle comprising a well-block having an exit-bore through which the molten material exits, said exit-bore having refractory sand therein forming an interface with the molten material contained in said ladle, which interface defines a blockage preventing the flow of molten material therepast, and a slide-gate for controlling the removal of the molten material, said slide-gate having a main frame, means for sliding the main frame relative to said well-block, said slide-gate having an exit-bore that is capable of alignment with said exit-bore of said well-block when said means for sliding align said exit-bores, wherein the improvement comprises:
A dart-assembly for piercing through and breaking open a blockage in an exit-bore of a well-block of a ladle for holding and transporting molten material, said dart assembly being positionable in an exit-bore of a slide-gate associated with the exit-bore of the well-block, comprising:
A method of piercing through and breaking open a blockage in an exit-bore of a ladle for holding and transporting molten steel, which exit-bore is filled with refractory sand, which ladle has associated therewith a slide-gate having an exit-bore for closing off the exit-bore of the ladle and for allowing the pouring out of the molten steel when the two exit-bores are in alignment, said method comprising:
In a ladle for holding and transporting molten material, said ladle comprising a well-block having an exit-bore through which the molten material exits, said exit-bore having refractory sand therein forming an interface with the molten material contained in said ladle, which interface defines a blockage preventing the flow of molten material therepast, and a slide-gate for controlling the removal of the molten material, said slide-gate having a main frame, means for sliding the main frame relative to said well-block, said slide-gate having an exit-bore that is capable of alignment with said exit-bore of said well-block when said means for sliding align said exit-bores, wherein the improvement comprises:
Dependencies are inferred from the claim text.