Method of field welding head-hardened rails
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United States of America Patent
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Dec 3, 1985
Issued Date -
N/A
app pub date -
Feb 19, 1985
filing date -
Dec 7, 1982
priority date (Note) -
Expired
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Abstract
A method of field welding head-hardened rails which includes the steps of gas pressure welding the rails, shearing off excess metal therefrom at the welded portion with a portable welder device, subjecting the railhead of the pressure welded portion of the rails to a subsequent heat treatment with a gas heater device, setting a width of the pressure welded portion to be heated at the time of the subsequent heat treatment with a pair of jigs, and cooling the portion which has undergone the subsequent heat treatment with an air blowing type cooler.
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