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US 4,982,591 AGranted
Rail recycle process
AssigneeW. Silver Inc.
InventorDarrell B. McGahhey
Life of this patent
Estimating the term…
Abstract
A worn, one-piece rail heated to a plastic state is initially deformed by a multi-stage rolling action to a slab constituted by flattened base and head extensions of an undeformed web portion of the rail. The slab is then edged in stages to effect thicknening of its intermediate portion and formation of a billet without any lapping, seaming or folding.
Claims3
In a method of recycling a one-piece rail having a base portion and a head portion spaced from each other along an axis by a substantially flat web portion, said method comprising
- heating the rail to a plastic state,
- feeding the heated rail between sizing and edging rollers to deform the same into a cross-sectionally useful billet,
- said feeding step including an initial group of rolling passes successively flattening only the base portion and the head portion of the rail between the sizing rollers to extend the web portion along said axis to form an elongated slab and then feeding the elongated slab to a second group of rolling passes alternating between edging rollers and sizing rollers where the slab is initially centrally thickened by edging rollers to prevent buckling and then ultimately forming said billet.
Dependencies are inferred from the claim text.