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The analysis preceding the refurbishment confirmed that, as an alternative of changing the entire pressure instruct, handiest the force trains on stands two and three needed to get replaced to eliminate the susceptible features. The attainable installed reserves of stands one, four and 5 have been utilized and the weight optimally redistributed to achieve the mandatory increase in throughput for the finished plant. New transformers and cycloconverters had been installed on stands two and three, and new motor and kit contraptions have been mounted on the latest foundations. The "Motor Utilization mannequin – MUM" newly developed by Primetals technologies changed into used for the primary time to make the optimum viable use of the installed efficiency reserves of the new and latest stand motors. the load was allotted optimally to adapt it especially to the product combine and to acquire the very best dynamic use of the forming forces of the individual stands. The purpose changed into to obtain the highest diploma of forming alongside the finished line, and to return as near as feasible to the burden limits of the individual stands.
The continuous vigor of the new machines is round 36 bigger and that they allow the rolling work to be optimally redistributed within the tandem mill. one of the crucial low-voltage drives had been also replaced. as an example, the rollers on the infeed aspect at the moment are outfitted with motors and drives which are up to 50 % larger with the intention to carry the mandatory pulling drive at bigger speeds. apart from the renewal of the force device, the technological controls in the simple automation and the degree 2 rolling regulations have been modernized. The refurbishment of all ingredients of the plant become planned in terrific detail and accomplished correct on agenda within the timeframe of 15 days. It turned into even feasible to cling the first checks of the rolling operation sooner or later sooner than scheduled. the first strip became effectively rolled as deliberate on December 14, and the plant turned into brought up to its old throughput inside three days.
all the verifications for greater than 20 individual product organizations, particularly interstitial free grades and different items for the car sector, had been completed by using the end of the primary month. The plant also drastically surpassed the contractually agreed parameters inside the first few weeks.
PLTCM at Hyundai's Dangjin web site now has a potential of round million tonnes once a year. It approaches bloodless metal strip in widths ranging from 600 to 1,800 millimeters. The entry thicknesses can differ between and 6 millimeter, and from to three millimeters on the exit side. The maximum strip pace is 1,four hundred meters per minute. the line consists of 4 four-high stands and one six-excessive rolling stand. Primetals technologies had fitted the road with procedure automation lower back in 2006.
source : Strategic research Institute, SteelGuru