Electric induction heating of a rail head with non-uniform longitudinal temperature distribution
AssigneeInductotherm Corp.
InventorsPeter Dickson, Paul F. Scott
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Abstract
Apparatus and method are provided for making the longitudinal temperature distribution of the bulbous end of a longitudinally oriented workpiece, such as a rail's head, generally uniform when the head has a non-uniform longitudinal temperature distribution. A combination of crown and skirt electric inductors is used to achieve the generally uniform temperature distribution by modulating the magnetic field intensity produced by current flow through one or more of the combination of crown and skirt inductors as required for the non-uniformly heated regions of the rail's head.
Claims9
A rail head electric induction heating apparatus comprising:
- a crown inductor comprising a central longitudinal section;
- a right flank longitudinal section;
- and a left flank longitudinal section;
- the right and left flank longitudinal sections each having a length shorter than the length of the central longitudinal section and disposed on opposing sides of the central longitudinal section;
- a skirt inductor comprising opposing right and left side skirt inductor sections;
- and
- at least one ac power source connected to the crown inductor and skirt inductor.
Dependencies are inferred from the claim text.