HIGH FREQUENCYHEATING APPARATUS FOR THE VESSEL CRANK SHAFT

摘要

A high frequency heating equipment for a vessel crankshaft is provided to heat only a part(forming range) of a crankshaft workpiece on which a forging operation is conducted, reduce heating energy, and substantially reduce heating time. A high frequency heating equipment(10) for a vessel crankshaft comprises: a heating part(14), a section into which a crankshaft workpiece is inserted, and which is heated; a heating coil(20) wound along an outer peripheral surface of the heating part; a cooling water supply part installed at one side face of a body to supply and circulate a refrigerant to the circumference of the heating coil; a tap changes(24) installed on an upper part of the heating coil while maintaining a predetermined spacing therebetween to selectively control a heating region of the crankshaft workpiece; and an electrode plate(22) contacted with any one selected from the tap changes to supply a power source to the tap change.