Process and apparatus for descaling rod
AssigneeTrefilunion
InventorJean Bernot
Life of this patent
Estimating the term…
Abstract
Descaling apparatus for steel rod wherein the rod is first bent by two sets of rollers oriented perpendicular to each other to initially dislodge the scale from the surface of the rod. The scale is collected in a hopper then conveyed to a tank where it is mixed with and suspended in water. The scale and water mixture is pumped out of the tank then projected against the surface of the wire as it passes through a descaling chamber by a series of nozzles staggered angularly and longitudinally through the chamber. The mixture following the descaling operation is collected and conveyed to a hydrocyclone and separator which recycles the larger scale particles and water while disposing of the finer scale particles which are too small for use in the descaling operation.
Claims16
A process for removing iron oxide scale from a steel rod, including the steps of bending the rod to cause a portion of said scale to be detached from the rod surface, collecting the detached scale, projecting the collected scale against the rod within an enclosure at a point downstream from the bending site, re-collecting the projected and newly detached scale, and recycling the re-collected scale for further projecting, characterized by:
- (a) suspending the collected, projected, re-collected and recycled scale in a liquid carrier,
- (b) accelerating the projected suspended scale against the rod with pressurized air,
- (c) projecting the accelerated suspended scale against the rod at a plurality of axially spaced points relative to the longitudinal dimension of the rod, and
- (d) elastically cushioning the interior surface of the enclosure.
An apparatus for removing iron oxide scale from a steel rod, including means for bending the rod to cause a portion of said scale to be detached from the rod surface, means for collecting the detached scale, means for projecting the collected scale against the rod within an enclosure at a point downstream from the bending site, means for re-collecting the projected and newly detached scale, and means for recycling the re-collected scale for further projecting, characterized by:
- (a) a tank containing a suspension of the collected, projected, re-collected and recycled scale in water,
- (b) a pressurized air nozzle opening into conduit means for the suspended scale for accelerating it against the rod,
- (c) a plurality of axially spaced nozzles relative to the longitudinal dimension of the rod for projecting the accelerated suspended scale thereagainst, and
- (d) elastically deformable cushioning means lining the interior surface of the enclosure.
Dependencies are inferred from the claim text.