TECH ADVANCES
DRB - Direct Rolling & Bundling System
For production of superior-quality bar bundles without the use of the traditional long cooling bed for bar multiples.
DRB is the revolutionary innovation that has made traditional long-type cooling beds for multiple-length bars and associated cold cut-to-length services no longer necessary in bar mills.
It is designed for production of 8 to 40 mm dia rebars, at production speeds of up to 40 m/s and 6 to 24 m final bar commercial lengths which can be applied to brand new rolling mills or as an upgrade of existing plants.
With the DRB system, high-speed cut to final commercial length of waterquenched and self-tempered high-tensile rebars is performed directly at delivery side of the finishing mill, and right before the bundle forming and tying station.
Superior bundle formation is based on a unique operating concept, whereby bars are regularly deposited and stacked in subsequent layers to form the regular bundle the tying of which is carried out with the latest generation of electromechanically driven Sund Birsta tying machines.
- All-in-one extremely compact design featuring cooling bed, perfect bundling and tying facilities in one system only.
- 10% saving in investment cost, 35% saving in maintenance and spare parts.
- 1.5 to 2.5 Million Euro saving in cost for civil works, buildings and erection (depending on plant productivity and Country).
- Absolute 100% bar counting accuracy, granted without use of the traditional bar counting system.
- Rolled stock on-line quenching and tempering (QTB system) at the finishing mill delivery side.
- Cut to final commercial length of the QTB treated rolled stock (sales-length) at high-speed directly after the finishing mill, and braking /unloading of the commercial-length bars directly onto the bundle forming station.
- High-quality bundles made-up of perfectly aligned and headed-up bars, neither twisted nor entangled.
- “Order-based” production of customized bar bundles, with extreme flexibility to change final bundle size (weight, number of bars, bar length), without interrupting the production.
- The final bundle delivery and market supply, organized on “ready-to sell” basis, minimizes the product storage requirements (storing area and residence time), with additional economical and logistical benefits.