The rolling/planishing process is used
to produce Tartan Bars®. A unique bar product offered
only by Scot Forge, these bars are produced by combining
a preliminary forging process which consolidates the center,
with a planishing operation, which provides a smooth rolled
bar surface.
Prior to rolling, the bar is rough forged
to both consolidate the center for soundness and size the
material in preparation for bar mill processing.
Finish rolling (or planishing) begins as the forged bar
goes through one of the four hyperbolic grooves of the customer-engineered
GFM bar mill. The desired final dimension is reached after
a series of bar rotations and reversing passes through the
grooves, taking less than 5 minutes to complete.
While still
hot, the bar moves down the GFM mill to the Braun abrasive
saw station for trimming. A 16" round can be cut in
less than half a minute. To complete the process, the bar
is end-stamped for traceability by an automated programmable
marking system. The bar is then slowly rotated down an automatic
uniform cooling bed to maintain straightness.
Because bars can be produced so efficiently in the planishing
mill, delivery times are reduced. And unlike traditional
hot rolled bars, which can only be manufactured in large
runs, Tartan Bars can be purchased in quantities as small
as the product of one ingot.
Rolling/Planishing
consolidates the center,
with a planishing operation, which provides a smooth rolled
bar surface.
While still
hot, the bar moves down the GFM mill to the Braun abrasive
saw station for trimming. A 16" round can be cut in
less than half a minute. To complete the process, the bar
is end-stamped for traceability by an automated programmable
marking system. The bar is then slowly rotated down an automatic
uniform cooling bed to maintain straightness.
