METHOD AND APPARATUS FOR HEAT TREATMENT OF STEEL RODS

摘要

Plant for direct heat treatment of medium-high C steel rods as they are leaving a hot rolling mill has a loop layer (3) from which rod is dropped as a spiral coil on to a horizontal conveyor (5) and inclined conveyor submerged in a heat treating vessel. Upwards inclined conveyor (9) is cascade connected to other upward inclined conveyors, the last communicating with a delivery roll conveyor (12). Rod, transformed in the coolant, passes to the delivery conveyor, which is covered by a heat holding vessel (13) to provide a second patenting process for removing detects of the first patenting process.