PLATE MILL
Plate Mill

PLATE MILL — POWER MEETS PRECISION

Plate Mills are quite literally the most powerful metal-working tools on earth, but they are precision tools too.

Precise control of dimensions is critical, and so is imparting mechanical properties to the rolled product. The plate rolling process affords great flexibility in terms of how mechanical properties are achieved, through a combination of alloying, working the material, and accelerated cooling processes. Accurate microstructural control starts with expert process knowledge. Primetals Technologies has bundled this knowledge into its process equipment and is able to work closely with our customers to develop the most cost-effective solution for their specific needs.

Plate Mills delivering metallurgical precision

Primetals Technologies has successfully completed over 70 Plate Mill projects since 2000, including new full lines, mechatronic packages and major modernizations.


Our plate equipment portfolio consists of:


Bottom Mounted Long Stroke HAGC

Plate Mill stands equipped with this feature benefit from active passline adjustment, reducing turn-up and turn-down rolling defects as well as lowering maintenance time and cost through the elimination of fixed and stepped packers. Industry thickness quality requirements are also exceeded.


SmartCrown® Work Roll Shifting

As well as increased plate profile accuracy and improved plate flatness, reductions per pass are increased leading to higher productivity, particularly for thin plates.


Direct Application of Levelling Load

The Thin Gauge High Strength Leveller and Power Leveller, specialized for thin and thick high strength plate respectively, utilize the direct application of levelling and bending load through six or more HAGC cylinders with internal position transducers. This allows the most precise control of the plate and leveller cassette deformation, leading to the highest quality, flat, high strength plates.

 

Primetals Technologies has built up a wealth of expertise in the Thermo-mechanical Controlled Processing (TMCP) of steel plates. Central to this process is the accelerated cooling of the plates after rolling.

Accelerated Plate Cooling

MULPIC® (Multi Purpose Interrupted Cooling) is the world-leading plate cooling technology. Its large flow control range (20:1) allows for both the Direct Quenching (DQ) of Abrasion Resistant and High Strength Steels and the lower cooling rates needed for high carbon or lower strength steels. High cooling rates lead to alloy savings on critical products such as Pipeline Steels, as well as improved toughness and weldability. The cooling header design, coupled with actuators to control the flow across the width leads to reduced residual stress and improved flatness compared to conventional spray and laminar systems.

MULPIC®’s flexible, modular design allows it to be integrated with existing cooling systems to form hybrid systems. This enables higher cooling rates, improved flatness and an expanded product range with minimal capital expenditure. Such systems have allowed the production of up to 500 Brinell Hardness abrasion resistant steel plates online as well as providing significant alloy savings on micro-alloyed steel plates.

With the increasing importance of steel production’s impact on the environment, many of MULPIC®’s unique technological design features have been optimized to support sustainably greener steel production.

 

Want to know more about Integrated Plants? Go to Integrated Plants & Solutions.

 

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Complete automation and process control for Plate Mills

Plant productivity and product quality are substantially depending on the quality of plant automation, process control, and available process optimization functions. Primetals Technologies provides standardized high-performance automation systems seamlessly integrating:

  • Digitalization packages (e.g. TPO, MAT, Condition Monitoring, Intelligent Sensors)
  • Production management systems (Level 3)
  • Physical models combined with artificial intelligence (Level 2)
  • Automation solutions including advanced technological controls (Level 1)

For existing installations, optimization packages are available as stand-alone solutions to improve production efficiency and strip quality.


Throughput maximization with:

  • Dynamic Batching and advanced Interleaving for thermo-mechanical rolling
  • Mill Pacing including Cooling beds charging optimization


Excellent strip quality with:

  • Contour and Flatness Optimizer
  • Model predicted roll alignment control to minimize camber (MRAC)
  • Wedge and Camber Expert
  • De-Tappering to improve Head/Tail thickness tolarances 


Our solutions provide:

  • Process Automation Twin to safely develop new materials and to optimize rolling schedules
  • Central Operation Cockpit to support mill operations (centralized pulpit)
  • Software architecture open for customers own future developments
  • Modular structure for step-by-step modernizations

 

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TECHNOLOGY AND MODERNIZATION PACKAGES

Get striking results with incremental investments

NameShort Description
TorqueMon Inline measurement of roll spindle torque for rolling mills
ShapeMon HSM Camber and centerline measurement for hot mill, plate mill and ESP
Integrated Solenoid Valve (ISV) Spray System ISV Roll coolant spray bars for hot and cold rolling mill strip flatness control
Width-Gauge Stereo Camera Non-contact stereoscopic camera width-gauging systems for Hot Strip Mills
Position Transducer Position measurement of rolling mill hydraulic capsule
MULPIC® Flow Control Flow control valves and automation solution for plate and steckel mill
MULPIC® Process Control Level 2 and cooling model for plate and steckel mill
MULPIC® Hybrid Cooling Flexible hybrid cooling solution for plate and steckel mill
Strip Cooling Technology Innovative and tailor-made strip cooling solution

Lifecycle Services — improve performance while reducing costs

Service and support from a single source – fast, experienced, reliable

As your lifecycle partner, we provide you with comprehensive operational support, which helps you operate your plant at the lowest cost possible. Our portfolio includes maintenance and repair services as well as the fast delivery of original manufacturer components, produced in-house according to the highest standards of quality.

We fully integrate maintenance organizations into our customers’ organizations, thereby proving what it means to be a true lifecycle partner. The result of this win-win relationship between steel plant operators and Primetals Technologies is continuous improvement in equipment performance, product quality, and total cost of ownership.

Our customers can rely on fast and uncomplicated support in the event of an unexpected component breakdown, wherever their facility may be located. Backed by global resources and a worldwide supplier chain, we can promptly provide you with top-quality original spare and wear parts at competitive prices. We keep a range of key parts in stock to ensure their fast availability.

Want to know more? Go to Primetals Technologies Lifecycle Services Site

Reference Story: Product mix extended to include high-strength structural steels

Customer
Baosteel Zhanjiang Iron and Steel Co., Ltd., PR China

Type of plant
Heavy Plate Mill

Our solution
Primetals Technologies MULPIC® accelerated cooling technology enables the production of plates with a uniform microstructure along the length and width of the plate. Read more

What the customer says
“The product mix is dramatically extended by the application of the MULPIC® in Zhanjiang Heavy Plate Mill Plant. Using the MULPIC®, we successfully produced TMCP API steel and high-strength structural steel.” Mr. Chen, Baosteel.