Hot forged tie plate for railroad
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United States of America Patent
Stats
-
Jun 30, 2020
Grant Date -
Jul 11, 2019
app pub date -
Mar 13, 2019
filing date -
Aug 24, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A railroad tie plate has a generally prismatic body including a field side flange and a gauge side flange connected by an intermediate portion. The intermediate portion includes a rail seat for positioning a railroad rail. At least one of the flanges includes a protrusion extending in a thickness dimension of the tie plate. A hole extends into the at least one protrusion so as to receive a retaining device, such as an e-clip. The tie plate is made by hot forging, having a microstructure comprising pearlite and alpha-ferrite. The net shape of the tie plate may be achieved by forging without subsequent material addition and without subsequent material removal.
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