Dongkuk Steel of Korea Places Order
for Endless Bar Rolling System
JP Steel Plantech Co. (JSP) has received an order from
Dongkuk Steel Mill Co., Ltd., an electric furnace steelmaker in Korea,
for an NKK-developed Endless Bar Rolling System (EBROS) that is used
in the production of steel bars. JSP is a plant engineering company
established in April 2001 by integrating the steelworks plant and equipment
engineering operations of NKK, Sumitomo Heavy Industries, Ltd. and Hitachi
Zosen Corporation.
The system to be supplied to Dongkuk's steel bar mill
in Pohang will improve rolling capacity to 97 tons from the present
88 tons per hour. This will permit continuous rolling of square billets,
130 and 150mm in width, into round bar products 10-32mm in diameter.
JSP landed the contract to deliver EBROS and dispatch supervisors during
hot runs, due in January 2003, after competing with European plant makers.
Dongkuk selected JSP based on NKK's successful delivery results of EBROS
to steel mills in Japan, China (Mainland and Hong Kong) and Finland
and the system's reliable operations to date.
EBROS performs continuous online welding and joining
of hot billets as they are transferred directly from continuous casters
or through reheating furnaces and fed to the rolling mill. This facilitates
efficient manufacture of bars, wire rods and sections by means of direct,
endless hot rolling without interruption between billets. The system
is composed of a descaler fitted on the upstream end, and NKK's proprietary
automated flash-butt welder and deburring machine.
The EBROS endless rolling technology offers the following
advantages:
| · |
Improved yield by reducing losses at both head
and tail ends |
| · |
Enhanced operational efficiency and productivity
by lowering gap-time before feeding each new billet and decreasing
miss-rolls |
| · |
Manpower saving and a simplified facility due
to significant reductions in irregular and short-length products |
| · |
Production of wire rods to any required coil weight |
| · |
Reduced maintenance costs. |
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