Abstract: An inner cooling system on drawing die drums, particularly for the working of wires, includes an inner insert extending substantially across the width of the drawing die drum and slightly spaced from the inner jacket wall of the drawing die drum defining a small rotational gap therebetween, the inner insert being stationarily mounted relative to the rotating drawing die drum. A cooling medium - feed conduit is flow-wise in communication with the gap. The inner insert includes axially extending ribs dividing the inner insert into a plurality of individual chambers one behind the other in a peripheral direction, as well as additional ribs extending in the peripheral direction on an upper and lower edge, respectively, closing the individual chambers at the upper and lower edges, all of the ribs being directed on the inner jacket wall of the drawing die drum spaced therefrom by only the small rotational gap.

Abstract: A method of descaling a rod comprises forming at least one bend in the rod and rotating the bent portion in an appproximately circular path while maintaining it in a space having a distribution of separated cleaning particles therein in a suspended relationship relative thereto. The rotating bent portion strikes the distributed particles and is cleaned thereby.

Abstract: An apparatus and method for continuously cleaning and coating wire is disclosed in which rod having scale and other inpurities on its outer surface is first mechanically descaled by passage through a plurality of spatially positioned rollers, then cleaned by frictional scraping by at least two rotating and orbiting abrasive drums which scrape the entire outer surface of the rod. The cleaned rod is then covered by a coating solution and electrically heated to a temperature sufficient to bake a coating on the exterior surface of the rod. The rod is then passed to a drawing apparatus.

Abstract: Apparatus is provided for uniformly cooling hot rolled rod over a continuous range of cooling rates from less than 0.5.degree. C/sec. to about 20.degree. C/sec. together with a mechanism for removing scale accumulated therein in a confined and safe manner. The context is that of cooling hot rolled steel rod directly after the steel leaves the rod mill wherein the rod may either be cooled rapidly by forced air convection or cooled very slowly under conditions in which a heated fluid or radiant heating must actually be employed in order to retard the cooling rate. The apparatus includes a group of cooling chambers, each of which has a blower which can be used to force cool air from the atmosphere onto the rod. Some of the cooling chambers are also equipped with means for supplying heat to the rod as may be necessary to retard the cooling rate.

Abstract: The present method makes it possible to expose or make visible surface defects on or in the surface of steel blanks by heating the blanks to a temperature below the hot working temperature of the particular type of steel and thereafter rapidly descaling the blanks by means of high pressure water which contacts the steel for a limited time so as to avoid a substantial chilling or quenching. After such descaling the blanks are cooled at a controlled rate to thereby produce an oxidation film on the descaled surface which film makes the defects visible.