H - Electricity – 05 – B
Patent
H - Electricity
05
B
327/21
H05B 6/40 (2006.01) H05B 6/02 (2006.01)
Patent
CA 1199376
INDUCTION HEATER ARRANGEMENT FOR FORGING BAR STOCK Abstract An induction heating arrangement for heating an end length of a forging bar following the cut-off therefrom of a previously heated and forged end length is arranged to heat the end length to a uniform temperature despite the existence of a residually heated terminal end from the previous heat. The heating arrangement has an induction heating coil with a longitudinally extending axial passageway therethrough for receiving the bar length to be heated by insertion into the passageway through the feed-in end thereof. A reciprocable flux diverter or robber ring is moved into the open other end of the coil passageway to surround the residually heated terminal end of the inserted bar end length, during a predetermined portion of the total coil heating cycle, to divert the flux from and prevent it from penetrating and heating the residually heated terminal end, whereby the inserted bar end length is evenly heated throughout its entire axial extent to the desired uniform forging temperature.
427091
Gowling Lafleur Henderson Llp
Park-Ohio Industries Inc.
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