No-slit hot rolling of railroad rails
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United States of America Patent
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Jun 30, 2015
Grant Date -
Mar 28, 2013
app pub date -
Sep 28, 2011
filing date -
Sep 28, 2011
priority date (Note) -
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Abstract
A method of recycling a one-piece rail having a base portion and a head portion spaced from each other by a substantially flat web portion. The steps include: heating the rail to a plastic state; feeding the heated rail through a first reduction pass to reduce a cross section of the rail without slitting the rail, thereby forming a bar; feeding the bar through a second reduction pass in which the cross section of the bar is further modified and then slitting the bar along the web portion into two bar pieces, one containing the former head portion and one containing the former base portion, as the bar leaves the second reduction pass; and rolling the two bar pieces, in a single pass line, through a series of reduction passes to produce a desired final cross section of the pieces.
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