| 摘要 |
An automated heat treatment system for heat treating forged work pieces in a fewer steps is provided The system has a furnace for heat treating engine valves, a carry-in mechanism for transporting forged engine valves into the furnace, and a carry-out mechanism for transporting heat treated engine valves out of the furnace. The carry-in mechanism has a first retention mechanism for retaining the engine valves hung by supporting the umbrella-shaped portions of the valves, and a first transportation mechanism for transporting the retained engine valves to the furnace. The furnace has heating means for heating the engine valves, groups of paired rails for supporting the umbrella-shaped portions of the engine valves The paired rails are movable in their longitudinal directions, and a stopper having a pawl which is movable towards, and away from, the rails. The carry-out mechanism includes a second transport mechanism for transporting the engine valves as they are hung, and a second retention mechanism for retaining the engine valves hung |
