Welded nose rail used for crossing

Details Welded nose rail used for crossing Welded nose rail used for crossing

1996-10-29

1998-10-13

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

148581, C21D 904

Patent

active

058207023

ABSTRACT:
A nose type rail member for crossing member applied to a turnout or wayside switch system on the ground for a train and the like, is made of high carbon steel material containing 0.70 to 0.82 wt. % of carbon. The rail member is constructed by a pair of rail parts, which has a concave at a side of the middle support part. A backing plate is made of the same as the rail member or a steel material having a less carbon content than that of the rail member and is holden by a pair of the opposite concaves. A pair of the head portions and the base portions at a side thereof are joined by means of electron beam welding and the joined rail member is subjected to S.Q. heat processing, thereby at least a wheel tread of the rail member becomes a homogeneous and fine pearlite structure.

REFERENCES:
patent: 1774263 (1930-08-01), Gillispie
patent: 1788622 (1931-01-01), Gillispie
patent: 1794287 (1931-02-01), Germann
patent: 2174367 (1939-09-01), Hoffman
patent: 4575397 (1986-03-01), Heller

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