Electric heating – Metal heating – For bonding with pressure
Patent
1992-01-08
1993-12-14
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219 55, 219101, B23K 1104
Patent
active
052705145
ABSTRACT:
A welding method and apparatus for flash butt welding adjacent ends of axially aligned railway rails includes a base frame and fixed and movable platens supported on the base frame. The platens support rail sections and are under the control of controller means operative to automatically move the movable platen through a predetermined distance/velocity relation as electrical power is inputted into the rail ends during straight flashing, preheating, flashing and upsetting phases of a welding cycle. The controller includes PID feedback loops operative to maintain the predetermined platen distance/velocity relation with entry of a single parameter by the operator. Significantly improved quality and repeatability of rail welds are obtained.
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Battisti Charles R.
Wechselberger Emmerich E.
Chemetron-Railway Products, Inc.
Shaw Clifford C.
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