Molten metal sampling
AssigneeInjectall Limited
InventorsAnthony Thrower, Kenneth W. Bates
Life of this patent
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Abstract
Apparatus and related method for taking a sample of molten metal from a vessel comprising a refractory block installed in a wall of the vessel before the vessel is filled with molten metal. The block is traversed by at least one passage having a closure element to initially block the passage. A rigid elongated pipe is movable lengthwise in the passage and a sample mould is operatively associated with the pipe. There is means activatable to advance the pipe forcibly in a forward direction to cause a forward end of the pipe to engage the closure element for unblocking the passage whereby molten metal gains access to the pipe and flows along the pipe to enter the mould.
Claims35
A method of taking a metal sample from a vessel of molten metal, comprising the steps of:
- (a) before filling the vessel with metal, installing in a wall of the vessel of refractory block having at least one passage therethrough extending from the exterior to the interior of the vessel, said at least one passage being initially blocked,
- (b) before or after filling the vessel with metal inserting an elongated pipe into said at least one passage, the pipe having a sample mould operatively associated with an outer end thereof,
- (c) thrusting the pipe forcibly towards the vessel interior, to engage an element in said passage which initially blocks the passage, for unblocking the passage thereby to expose the pipe to the molten metal for the latter to run along the pipe and fill the mould, and
- (d) after allowing time for the metal that has accumulated in the mould to cool at least to attain a pasty condition, separating the mould from the pipe thus obtaining a sample for evaluation.
A method of taking a metal sample from a vessel of molten metal, wherein the vessel has a refractory block installed in a wall of the vessel, the block being traversed by at least one passage which extends from the exterior of the vessel to the interior thereof and is initially blocked, the method comprising inserting into said at least one passage a pipe having at its outer end a sample mould, forcibly advancing the pipe at an element in the passage which initially blocks said passage to unblock said passage and expose the pipe to the metal for the latter to run along the pipe and fill the mould and, after allowing time for the metal accumulated in the mould to attain at least a pasty condition, separating the mould from the pipe thus obtaining a sample for evaluation.
Apparatus for use in taking a sample of metal from a vessel containing molten metal, comprising a refractory block for installing in a wall of the vessel, the block being traversed by at least one passage, a closure element in said passage to initially block same, a rigid elongated pipe movable lengthwise in the passage, a sample mould operatively associated with the pipe, and means activatable to advance the pipe forcibly in a forward direction, in use to cause a forward end of the pipe to engage the closure element for unblocking said passage whereby molten metal gains access to the pipe and is free to flow along the pipe to enter the mould.
A sample for use in taking a sampler of metal from a vessel containing molten metal comprising a dispensible unit including a rigid, elongated pipe for extending into said vessel through the wall of said vessel and a sample mould for remaining outside the wall of said vessel operatively associated with an end of said pipe, the mould being detached from the pipe while the pipe remains in said wall after a metal sample has been collected in the sampler.
A dispensable refractory body traversed by a plurality of passages all having frangible or dislodgeable closure elements located at one end of the body and a plurality of samplers having pipes to fit movably in the passages, each sampler having a mould attached to its pipe for collecting a sample, each mould being detachable from its pipe after collecting its sample.
Dependencies are inferred from the claim text.