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Bar and Wire Rod Mill

Steel Plantech provides the Bar and Wire Rod Rolling System that meet variety of customer needs.
For example, we provide solutions that meet customer needs such as the Slit Rolling System and the High Speed Mill (40m/s) which increase productivity, the Hot Direct Rolling System which is directly connected with a continuous caster, not via a reheating furnace, and thereby greatly reduces the energy consumption, the Water Quenching System which helps in enhancing the strength of bars, and Endless Bar Rolling System (EBROS™) which significantly boosts yield.
Moreover, we can suggest and provide a package solution by supplying integrated lines of electric arc furnaces, continuous casting facility and rolling mills.

News List

11. May, 2016
JP Steel Plantech Co. will exhibit in 2016 SEAISI Conference & Exhibition

Solutions

  • approximately
    20~40m/s

    Speeding up of finishing speeds

Production Volume Increase

High speed rolling technology

Increased production volume and stable operations become possible through high speed rolling technology.

Block mills

Using a block mill, which drives multiple rolling mills and has been used on 100m/s class wire rod lines, as the bar steel finishing mill, will achieve speeds far beyond the finishing speed of about 20m/s that was the limit of conventional mills. Rolling using ultra-hard rolls provides advantages such as precise measurements and enhanced surface finish.Additional advantages are easier roll exchange and maintenance.

High Speed Dividing Shears (HSDS)

Ordinarily, shears were start-stop types, which began moving when the shearing point arrived. However, there was a limit to the speed of the blade rotation (shearing speed) because the blades went from a standstill then began rotation and acceleration. Continuous rotating shears were adopted for the HSDS system, enabling faster shearing speeds. This makes stable shearing possible at even faster rolling speeds.

Production Volume Increase

  • 75 % increase

    in production volume

  • 2 % improvement

    of yield ratios

  • 15 % increase

    in operation rate

EBROS™ stands for Endless Bar Rolling System. Its objective is to enhance productivity and yield ratios.
Simply put, the function of the EBROS™ is to weld the heads and tails of the billets that are extracted at constant intervals from a reheating furnace, and to create a billet of unlimited lengths.

  1. It enhances productivity by doing away with gap time
  2. It does away with cropped items or items of irregular lengths
  3. It reduces miss-rolls and enables uniform quality
  • 0 0Reheating Furnace Fuel Costs

Production Cost Reduction

HDR (Hot Direct Rolling) is a system where the billet from a continuous casting facility is conveyed through roller table and directly input into a mill without being reheated. It is an excellent energy-saving technology.

For the realization of this HDR system, comprehensive engineering capabilities for furnaces and continuous casting and rolling facilities are required. Such includes (1) high-temperature casting technology; (2) technology to minimize the temperature decrease; and (3) optimal layout for delivery to the next process.

We, Steel Plantech, will make the utmost use of these comprehensive engineering technologies to meet our customers’ needs.

References

Supplied To Country Capacity Start Up
  • Asia・Oceania
  • Vina Kyoei Steel Vietnam 110 2014
  • Kishiwada Steel Japan 130 2012
  • Kyoei Steel Japan 100 2011
  • Asahi Industries Japan 110 2010
  • Hmisho Steel Syria 60 2009
  • JFE Bars & Shapes / Himeji Works Japan 140 2008
  • Nakayama Steel Products Japan 90 2007
  • YK Steel South Korea 105 2004
  • Dongkuk Steel / Pohang Works South Korea 97 2003
  • Shiu Wing Steel Hong Kong 100 2002
  • Xingtai Iron & Steel China 88 2002
  • Kishiwada Steel Japan 130 1997
  • Tokyo Steel Manufacturing / Takamatsu Plant Japan 90 1996
  • JFE Bars & Shapes / Kashima Works Japan 160 1996
  • Kyoei Steel / Nagoya Japan 100 1995
  • Topy Industries Japan 100 1995
  • Vina Kyoei Steel Vietnam 50 1995
  • Mitsuboshi Metal Industry Japan 90 1994
  • Shimizu Steel Japan 60 1993
  • Dongkuk Steel / Incheon Works South Korea 90 1992
  • Dongkuk Steel / Changwon Works South Korea 110 1992
  • Otani Steel Japan 70 1988
  • Asahi Industries Japan 120 1988
  • JFE Bars & Shapes / Sendai Works Japan 180 1986
  • Hokkai Steel Japan 60 1982
  • JFE Bars & Shapes / Himeji Works Japan 150 1976
  • Godo Steel / Funabashi Works Japan 150 1976
  • South America
  • Gerdau Brazil 120 2012
  • Europe・Middle East
  • Fundia Wire Finland 86 2001
  • Çukurova Turkey 100 1992
  • Sivas Turkey 90 1988
  • Africa
  • ANSDK Egypt 50 1999

Technical Information

Controlled Water-cooling Device

The manufacturing of water-cooled reinforced steel is possible through an online heat treatment process in the rolling mill line. There is no need to add expensive alloy elements vanadium and niobium.

Online Flaw Detection System

Placing a flaw detector immediately after the finishing mill has made it possible to track the position of surface flaws on special-form steel bar products. This enables operators to be notified of where that flaw ultimately is on the product, thereby making it possible to significantly reduce the mixing in of defective products.

Housingless Stand

Simple, highly sturdy construction

  1. 1Housingless
     →The weight has been trimmed, creating the possibility that a larger stand can be adopted in the rolling mill yard where there is a limit on the crane capacity.
  2. 2The midsection of the rolling screw shaft is secured on the pass line
     →This results in a more balanced construction than when the lower portion of the rolling screw shaft is secured.
  3. 3Buttress screw thread used at the rolling screw shaft
     →The same position is securely maintained even if a strong rolling reaction force is applied.

Wide area supporting the load as well as a chock self-aligning system

  1. 1Upper area of the chock supported at two points
     →The area on the bearing that receives the pressure becomes wider, extending the life of the bearing.
  2. 2Self-aligning mechanism (spherical seat) embedded in the chock
     →Equal load is applied on the bearing because the chock tilts in accordance with roll slack, extending the life of the bearing

Simultaneous rolling by top and bottom rolls

→Fixed pass line that enables stable rolling
→Shim adjustment, carried out at the roll shop according to the roll diameter, unnecessary

Non-hydraulic inner stand

  1. 1Mechanical roll balance has been adopted
  2. 2The hydraulic motor for rolling has been placed in the spindle support
    →Serviceability improved by removing hydraulics from the inner stand, where conditions are harsh for hydraulic piping due to water, scaling and miss-rolls

Continuous Spindle Support

  1. 1Structured so that the spindle is supported even when there is no inner stand in place
     →Suitable for automated stand exchange.

Slit Rolling

Multislit rolling methods include 2-slit, 3-slit, and 4-slit rolling.2–slit rolling is currently the mainstream method, providing stable quality and good measurement systems. Furthermore, even higher production efficiency can be achieved through speeding up technology.
3-slit and 4-slit rolling allows production volume to be increased even with a small number of rolling mills. Slit rolling is also suitable for revamping a low productivity 2-slit line mill to a high productivity mill with greater production volume while keeping the number of rolling mills the same.

4-Roll Sizing Mill

High measurement control technology
Simple configuration and high rigidity

SPCL Chockless Stand -Ultra High Rigidity Stand

The chockless stand does not have a chock, and has an extremely rigid structure. The mechanism makes it possible to adjust the spaces of the upper and lower rolls symmetrically with the pass line by using the worm screw to turn the eccentric sleeve that has been built into the roll axis.

  1. High rigidity mill without roll jumping
  2. Constant pass line at the precise level by symmetrical screwdown of two rolls
  3. Independent stand change
  4. Quick roll change by exclusive changing device
  5. High reduction rate and high productivity
  6. Allows exceptionally easy rolling
  7. Improves quality of products