Apparatus and methods for rolling and treating steel rod.

摘要

Method and apparatus are provided for heat treatment of steel rod while being transported in overlapping ring form on a conveyor. In a method of controlled cooling the rod is deposited at high temperature onto a conveyor in spread-out ring form and transported along a given path while being cooled by forcing air against the rod from slots positioned adlacent thereto and extending transversely across said path and controlling the pressure and/or volume of air supplied to the individual slots or groups of slots. Apparatus for carrying out such method may comprise a conveyor having mutually spaced driven carriers on which the rings are transported along a given path characterised in that heat resistant elements (46) are arranged beneath the path to define slots (48) which underlie the carriers and extend transversely across said path, conduits (40) communicate with said slots, means (32, 42) supply cooling air via said conduits and through said slots for application as concentrated jets directly against the undersides of the rings being transported thereon, and means associated with said conduits for varying the amount of air being supplied through said slots along the lengths thereof.