Mold for direct-cast aluminothermic welding
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United States of America Patent
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Feb 25, 2014
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app pub date -
Nov 19, 2008
filing date -
Nov 20, 2007
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Abstract
The mold for aluminothermic welding of metal rails has two components made of identical rigid refractory material and suitable for fitting around two ends of rails to be welded, each component includes: a lower part having a face defining a mold cavity suitable for enveloping the foot and a core of the ends of the rails, and a channel opening at the bottom into a lower region of the mold cavity and having at the top an opening and an upper part including a cooling chamber connected to the mold cavity and capable of containing the heads of the rail ends, the cooling chamber forming a non-compartmentalized volume to which the channel is connected via the opening and which is bounded by an external wall of each mold component.
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