Tandem cold mills

Cold rolling
High performance rolling for efficient production of advanced steel grades From batch to fully continuous operation

Producing high quality strips in volumes between 0.9 and 2.5 million tons per year poses a huge challenge. Perfect for such an operation are SMS group tandem cold mills - our powerful flagships in the cold rolling sector. You can operate them in either batch or continuous mode as CTCM. Optionally, it's possible to arrange them inline as coupled pickling line tandem cold mills (PL/TCM). The large number of plants we have built, especially for very wide strips, reflects the trust our customers worldwide place in our proven plant technology. We constantly improve our cold rolling technology, so you can also produce the latest material grades accurately and cost-effectively.

Concept

pickling line tandem cold mill (PL/TCM)

pickling line tandem cold mill (PL/TCM)
Central to the PL/TCM is the direct coupling of pickling and rolling. This ensures a continuous production flow. The main units on the entry side are: a pay-off reel, laser welding machine, tension leveler, turbulence pickling line, and several horizontal strip accumulators. Next in line is the mill section consisting of several mill stands in CVC® plus design and a continuous exit section with drum shear, double or carousel reel, and Rotary Inspect.
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Continuous tandem cold mill (CTCM)

Continuous tandem cold mill (CTCM)
What defines the continuous tandem mill (CTCM) is a continuous entry section featuring a pay-off unit, welding machine, and strip accumulator. All this is necessary to ensure an unbroken production flow. Typical exit-side installations are a drum shear, tension reel, and Rotary Inspect.
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Tandem cold mill (TCM)

Designs for high production

Crucial for large batch sizes is a continuous production flow. Further benefits for you are smooth production flow, low roll wear, high yield, and consistent product quality.

Especially in Europe, America, and Russia, there are many batch TCM in operation. That's no surprise, because this mill type comes with considerable advantages for flexible production planning. To increase the yield of batch mills, we have developed a number of trend-setting technical features in recent years. Included here is our threading assistance system TRC®. Using our engineering expertise, we offer you customized, efficient greenfield or revamp designs to ensure you get the most out of your mill. Needless to say, we can easily retrofit all our newly developed features.

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Technology

High performance tandem cold mill image

High performance tandem cold mill

High performance tandem cold mill design - All in one solution for efficient cold rolling

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Superior design and actuators for roll gap setting

Outstanding CVC® plus 4-high and CVC® plus 6-high designs for better yield and quality, proven by more than 800 installed systems:

Twin reel image

Twin reel

Compact - strong - accurate
Twin reel: our new continuous exit section reel type for TCM

SIEFLEX-HT gear-type mill drive spindles image

SIEFLEX®-HT gear-type mill drive spindles

Our SIEFLEX®-HT gear-type spindles are engineered to transmit ...

Multipurpose mill CVC plus M 18/4 image

Multipurpose mill CVC® plus M 18/4

Flexible production of soft and high-strength material in a single mill

Rotary inspect image

Rotary inspect

Rotary Inspect gives you reliable, ergonomic and efficient strip surface inspection

Total roll gap control (TRC) image

Total roll gap control (TRC®)

Total roll gap control (TRC) - thread in and tail out assistant for lower off-gauge lengths and high yield.

X-Pro® laser welder

Fast, safe, and successful welding of challenging steel grades

Precise, fast and reliable. The X-Pro Laser welder from SMS group for continuous production of difficult-to-weld steel grades.

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X-Roll® Oil Bearing

Hydrodynamic roll-neck bearings from SMS group are highly advanced and elementary components of modern rolling mill technology. That's because they support the load-bearing backup rolls. Even under extremely tough operating conditions, they ensure long roll service life and minimal maintenance outlay. This is how roll-neck bearings contribute substantially to meeting the high requirements for optimal final strip geometry.

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Selected References


Electrical and automation systems

Future-proof complete solutions from one source

  • Integrated solutions consisting of mechanics, electrics, and automation
  • The benefits of long-term experience with X-Pact® world-leading automation
  • Energy distribution and drive systems
  • The only genuine future-proof automation system
  • Control stations designed around the operator
  • Innovative HMI system for production-centered operation
  • Plug & Work integration test, process and production simulation, near-reality 3D visualization
  • All-inclusive modernization
  • International setup
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Holistic, efficient, and future-proof

Products and solutions for tandem cold mills

solutions
Pass schedule calculation (PSC®)
Automatic threading assistant
X-shape® flatness measuring
Profile and Flatness Control
Mass flow gauge control
Technological control for mill stand and coiler
X-shape® flatness measuring and control
Coiler control
Your professional partner for
Tandem cold mills

Our specialists in electrics, automation, technology, and mechanics work hand in hand to ensure your systems function smoothly. That’s how we create intelligent, market-centered solutions that boost your production.

Service


Coating technologies for rolling mills

Chrome plating of work rolls for longer service life

Chrome plating of work rolls

Chrome is one of the hardest metals, with excellent corrosion resistance and a low frictional coefficient. This combination turns the surface of work rolls to high-value and wear-resistant. SMS provides automated coating and carefully inspects the roll before and after chrome plating.

SMS uses EDT prior to chrome plating

Deformation behavior and appearance of the varnish depend on the structure of the strip surface. EDT (electric discharge texturing) is a machining process which removes particles from a work roll surface by energy of electric discharges. The electro-erosion leads to a higher number of peaks on the roll material's surface. This results in a roughness higher by 2-3 points compared to shot-blast-texturing (SBT). In combination with a 0.005 to 0.015 mm thick chrome layer, EDT is a successful solution for automotive sheets.

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Genius CM

Our early-warning system to avoid downtimes

The Genius Condition Monitoring includes a modularly designed, permanent online monitoring system. It controls and records the current condition of wear-prone plant components and notifies when situations become critical.

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1. Monitoring of toothing
(Gear mesh frequency) MDVA - Diagnostic Vibration Anaysis
2. Bearing damage
Temperature Monitoring
3. Gear unit lubrication
(Dirt particles, oil flow, water level) HDM - Hydraulic Monitoring
4. Spindle monitoring
(Torque) TAS - Torque Analysis System
5. Process monitoring
MiDaS - Mill Diagnostic System

X-Roll® Oil Bearing

Hydrodynamic roll-neck bearings from SMS group are highly advanced and elementary components of modern rolling mill technology. That's because they support the load-bearing backup rolls. Even under extremely tough operating conditions, they ensure long roll service life and minimal maintenance outlay. This is how roll-neck bearings contribute substantially to meeting the high requirements for optimal final strip geometry.

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Maintenance tools

Effective and economical maintenance

IMMS®

The Integrated Maintenance Management System (IMMS) is a combination of a CMMS software and valuable data based on decades of SMS experience. From elaborate analyses and existing documents, SMS creates a plant specific, customized package of component- related maintenance strategies for technically and commercially effective maintenance.
 

IMMS® - steps required for a complete maintenance system

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Downloads

Compact Cold Mills
Download
Ahead of Times with Plug & Work
Download
Precise Cold Rolling
Download
Modernization of Rolling Mills - Electrical and automation systems
Download
X-Pact Vision Operation and visualization
Download
X-Shape – PRECISE FLATNESS MEASURING
Download
Low-Voltage Frequency Converter
Download
Production Planning and Scheduling
Download

Contact

SMSgroup Schwarz, Christoph

Christoph Schwarz

SMS group GmbH
Technical Sales Tandem Cold Rolling Mills
Wiesenstraße 30
57271 Hilchenbach
Germany

Phone : +49 2733 29 1402
Fax : +49 2733 29 771402

SMSgroup Böttner, Detlef

Detlef Böttner

SMS group GmbH
Electrical and Automation Systems Cold Rolling Mills
Wiesenstrasse 30
57271 Hilchenbach
Germany

Phone : +49 2733 29 1257
Fax : +49 2733 29 771257

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