Big bar mills produces semi-finished products of quality, special and stainless steels for automotive, oil and gas, wind farms, or other special applications. They produce billets or large products round, square and hexagonal in several dimensions and grades that cannot be processed on a conticaster. Recently Danieli has introduced the Rotoforge process to roll cast round blooms of up to 850 mm and 18-t ingots to produce rounds up to 500 mm. The target is to give to the market as-forged products in order to limiting to minimum 5% second choices materials and reducing to 15% of transformation costs. The Rotoforge provides the same internal quality achievable by forging, thanks to the unique features of the new design “Rf” heavy duty stand capable to impress to the material the same strain “to the hearth” applied by a forge.
Home » Products » Long products » Bar and Section Mills LONG PRODUCTS Bar and Section Mills High-production straight rebar, sections and ultra-compact ultra-heavy spooled coils. 52/121
Danieli high-productivity straight bar production lines achieve over 180 t/h of 10-mm-dia bar/rebar production through the High-speed Twin Channel system for a 96-meter-long straight bar running onto the cooling bed at a speed of 50 m/s (180 km/h), braked and discharged in less than 2 seconds or over 130 t/h wehn using multi-stand slit rolling technology. Danieli multi-strand slit rolling technology is a combination of a special roll pass design and guide equipment to shape and longitudinally separate the incoming billet into 2, 3, 4 or 5 individual strands. These are then rolled together (as one bar) down to the finished size in the finishing mill stands, simultaneously cut into multiple lengths and fed together onto the cooling bed through the traditional ”apron-type” entry roller table at maximum speeds of up to 20 m/s for two-strand slitting and 13 m/s for four or five-strand slitting. Danieli Multiproduct rolling mills: Over 200 sizes produced in a single rolling mill in bars, light sections and coils.
Danieli ultra-high-speed wire rod lines regularly reach production speeds of over 125 m/s for commercial steel wire rod, and 115 m/s for special steel grades with strict size tolerances, producing high-quality coils of up to 3 tons in our H3 stands for High Productivity, High Efficiency and High Quality mills. Our latest innovative processes satisfy the requirements of todays increasingly demanding steel industry in terms of higher product quality and output capacity, better material yield and plant efficiency, resulting in substantial savings in production cash costs. The H3 High-speed wire rod and bar-in-coil rolling mills are designed for the production of 4.5 to 27-mm-dia. wire rod and 12 to 62-mm bar in coil at speeds up to 25 m/sec and coils up to 4 ton weight.