Magnitogorsk Iron and Steel Works has signed the contract for supply of the process equipment and services for the revamping of Hot-rolling Mill 2500 in Rolling Shop No. 4.
According to strategic plans of the Company aimed at increasing the output of commercial products there is a current necessity to increase hot-rolled coils production capacities. In this connection MMK took a decision on radical reconstruction of Hot-rolling Mill 2500. Following the reconstruction Mill 2500 process equipment will include highly efficient walking beam reheating furnaces (370 t/h), which will allow to produce at least 5,0 million tons per year using new slab charging systems, primary descalers of the roughing train; roughing train consisting of two high-capacity universal stands equipped with all necessary actuators (electric motors, spindles, screw-down units, work roll changing devices).
The roughing train will also be equipped with new roller tables, side guides, water descalers and auxiliary tables. The existing intermediate roller table between the roughing and finishing trains will be replace by a new one. In front of the flying shears there will be Coilbox system installed ensuring preliminary coiling the input material of up to 45mm thick fed from the roughing stands followed by feeding the plates to the finishing train with simultaneous uncoiling of the preliminary coil. Instead of the existing shears installed before the finishing train , the new flying shears will be mounted ensuring cutting the input material of up to 65mm thick for further processing in the finishing stands.
The reconstruction of Hot Rolling Mill 2500 will allow increasing the production rate of the mill to 5 mtpy with ability to produce coils and sheets for pressure vessel construction, shipbuilding and bridge building industries. Moreover, the range of sizes and steel grades produced on this mill will broaden, and the production of quality input material in coils will be ensured for further production of cold rolled strip and coated strip. The reconstruction of the mill will be performed in the environment of on-going operation. The approximate deadline of the project implementation is the year of 2010.
The contract for the equipment supply has been awarded to «NKMZ» J.St.Co.