Induction heating of rail welds

Details Induction heating of rail welds Induction heating of rail welds

2007-08-07

2007-08-07

Leung, Philip H. (Department: 3742)

Electric heating

Inductive heating

Metal working

C219S610000, C219S635000, C219S662000, C219S667000, C219S672000, C219S676000, C266S129000, C148S569000

Reexamination Certificate

active

10296635

ABSTRACT:
An apparatus (10) and method for preheating welds uses a centered induction plate (12) having preferably a plurality of induction coils (30, 32) to impart the generation of heat in the materials to be welded (14), being interactively controlled by at least a temperature sensor (90, 92) and power supply control loop (16) so that even preheating can be obtained for a selected length of time given the parameters of the weld desired.

REFERENCES:
patent: 4300031 (1981-11-01), Reboux et al.
patent: 4327265 (1982-04-01), Edinger et al.
patent: 4355222 (1982-10-01), Geithman et al.
patent: 4717801 (1988-01-01), Brolin et al.
patent: 4734552 (1988-03-01), Brolin
patent: 4845332 (1989-07-01), Jancosek et al.
patent: 5773779 (1998-06-01), Morlock
patent: 5877468 (1999-03-01), Morlock
patent: WO 99/31322 (1999-06-01), None

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