Prestressing wire rods with smooth and profiled surfaces in rings - reinforced concrete rods with smooth and profiled surfaces in rods with and without threads.
Prestressing wire rods consisting of 7 strands, smooth or profiled, with very low relaxation in a cross section area of 29 mm2 to 150 mm2 – compacted reinforced concrete rods, cross section of 165 mm2 – reinforced concrete strands, greased and sheathed.
Cold-rolled shaped wire in dimensions from 5mm2 up to approx. 75mm2, are produced in our small shaped wire rolling facility.
Based on continuous casted and rolled billets 500.000 t/a of wire rod with diameter from 5,0 mm up to 32,0 mm are rolled in a continuous process.
Billets measuring 130 x 130 mm square and up to 12 m in length are heated up to rolling temperature in a walking beam furnace, descaled and rolled on a two-strand roughing train. After having passed scrap-shears the rod enters two single-strand ten-stand intermediate trains with H-V design. Prior to two ten-stand finishing blocks two loop lines are optionally available for thermo-mechanic rolling,
The final rolling speed producing size 5,5 mm is 85m/sec.
After passing water cooling boxes the wire rod will be spread by a laying unit on the retarded cooling line separated in different cooling zones (transport by rolls) and finally be formed to coils in the coil forming chamber. By employing controlled cooling specific mechanical properties of the material can be selectively achieved.
A computerized transportation system conveys the coils to three single and one double compacting and binding stations where the bundles are prepared for shipping by strapping in four places.
Marking is carried out on an integrated weighing and tagging station.
Furthermore, we can offer various kinds of surface treatment (pickling, phosphate and polymere coating) and heat treatment (soft annealing ). The pickling plant comprises an annual capacity of 140.000 mt and the annealing plant 70.000 t.
wire rod for springs, chains, cold heading wire