METHOD AND APPARATUS FOR COOLING HOT ROLLED ROD

摘要

A method and an apparatus for cooling a rod of a coil form, immediately after the hot-rolling, in which the rod whose loops are spaced a given pitch one from another is laid flat on a chain conveyor, more exactly on rails thereon, and transported therealong by means of endless chains, during which time the rod is cooled with cooling fluid or air, which is being introduced from below the cooling floors, through nozzle portions formed in the bodies of the cooling floors, themselves. These method and apparatus features the arrangement, and construction including the shapes of nozzle portions thus formed. Cooling fluid is upwardly injected at an angle of 10.degree. to 70.degree. to the plan of the cooling bed and horizontally at an angle of 10.degree. to 150.degree. to the transporting direction of the rod, towards said rod right above rail portions and chain portions of the conveyor, while cooling fluid is upwardly injected at an angle of 15.degree. to 75.degree. to the plane of the cooling bed, and horizontally at an angle of 30.degree. to 150.degree. to the direction of the transportation of the rod, towards the overlapped, sidewise circumferential portions of the rod. Thus, uniform cooling may be achieved over the entire length of a coil of the rod.