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50 m/s in Cooling Bed to Enhance Profitability in
Rebar Production
Luigi Tambosco Andrea Taurino
(Vice President Sales Bar Wire Rod Mills Dept.- Danieli Morgårdshammar,
Marketing Manager Long Product - Danieli Morgårdshammar)
Abstract Achieving a very high production rate for the smaller-size range of bars products, in order to exploit reheating
furnace capacity fully, has always been a common goal for bar producers worldwide. But one of the most common ways to
reach this goal is to use the well-known Multistrand Slit Rolling system, a combination of dedicated roll-pass design and
dedicated guiding equipment to shape and longitudinally separate the rolled stock into two, three or four individual strands,
rolled together as one single bar down to the final finished size. The alternative technology that will result in a real
breakthrough innovation for the full spectrum of steel producers worldwide, will be the ultra-high speed bar finishing
rolling and delivery into the cooling bed through the Danieli HTC “High-speed Twin Channel”. This system, originally
invented and patented by Danieli in the early 1970s, has been operating successfully worldwide since then with speeds that,
from the original top speed of 20 m/s during those years, has now reached the record speed of 50 m/s in the cooling bed.
The HTC perfectly suits the latest generation high-production bar mills where smaller-size bars are slit at the pre-finishing
continuous mill stands and finished on two independent strands through two Delta-type high-speed blocks. This paper
introduces the technical characteristics of the ultrahigh
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