Section and billet mills

Hot rolling
Custom-designed to your portfolio

SMS group always has you in mind when we design plant and machinery exclusively for you and your products. This includes everything you want - from beams and sections to rails and semi-finished products - down to the very last detail. Also incorporated are complete rolling lines with ready-integrated heat-treatment and finishing equipment. These plants are perfect for producing e.g. head-hardened rails, which have a very long service life that makes them great for high-load applications. So you benefit measurably from our technologies because we continually improve them. That ensures they are much more cost-effective and deliver demonstrably higher quality than the alternatives.

SMS group has banked vast experience in planning and building section and billet mills. Considering our long list of almost 200 references since 1950, we enjoy the status of a true market leader in this field.

Typical Layout Rail & Section Mill Layout

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Plant types

Rail mills

Custom solutions for all rail types

You know single-purpose rail mills are designed specifically for producing rails for railroads as well as crane rails, tram rails, and special rails. But it's also possible to use combined rail and section mills.

We developed a universal rolling method using a tandem reversing group. That ensures you can cost-effectively roll rails as well as beams and other sections on the same compact mill.

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Heavy section mills

One mill – diverse products

Extremely versatile, heavy section mills produce not only beams, but also channels, angles, shipbuilding sections, special sections, and sheet piles. Depending on your product range, we design your mill for the size spectrum you want. Typically, these mills produce web heights measuring up to 1,000 mm. Yet they can also handle 1,100 mm webs for super-heavy beams. Heavy section mills always come in the form of reversing mills.

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Medium section mills

A wide range of products

You’ll find many uses for our medium section mills because they are perfect for smaller beams, channels, angles, flats as well as special sections. These mills produce web heights between approx. 100 mm and 600 mm. Whatever your product range and output, we adapt the mill stand arrangement to suit you. That’s how SMS has already implemented three different layouts for various customers. Included in the types we supply are reversing mills, semi-continuous, and fully-continuous mills.

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Billet mills

Do you want to produce semi-finished products such as blooms, billets, hexagonal dimensions, or large round bars? We offer you two mill types that are ideal for these purposes. Blooming mills roll billets from ingots or large continuous-cast input stock. Billet mills manufacture high-quality and stainless steel products, e.g. for the automotive industry. You can vary the dimensions of your products from approx. 50 to 350 mm in diameter or edge length. One stand-out feature here is our HSC® Hydraulic Size Control. Originally engineered for our section mills, this technology ensures you achieve tolerances as close as a quarter of the DIN EN standard.

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Technology

Section and billet mills CBD mills image

Crucial to effective production in semi-continuous and reversing mills are our breakdown mills. They create the leader passes before rolling in the finishing mill, e.g. a CCS® tandem reversing mill. These two-high reversing mills also make all the difference in blooming mills that produce smaller billets from large-dimensioned cast material.

To develop our new generation of breakdown mills, we combined our vast experience with cutting-edge design and calculation tools, including the finite element method (FEM).

Out of this evolved mill stands offering higher stiffness and greater potential rolling loads, yet more compact design and lower investment costs.
All this explains why SMS group has supplied 20 breakdown mills in the last 10 years alone.

You benefit from:

  • Constant roll force measurement via hydraulic cylinders and pressure transducers
  • Automatic overload protection with quick roll gap opening to avoid roll breaks or damage to the adjusting system
  • Top mill stand stiffness for better dimensional accuracy
  • Roll changing within max. 20 minutes
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Our CCS® mill stands ensure you can produce sections more cost effectively than ever before. Plus, you achieve better product quality, lower total investment, and cheaper operation due to lower roll costs. It’s an added advantage that you can use our CCS® stands as both two-high and universal stands in heavy and medium section mills as well as in rail mills. Its compact design makes the CCS®equally suited to revamps and new plants. Outstanding here is that you can simultaneously change rolls and mill guides within 20 minutes.

You also benefit from the high stand rigidity, the option of installing rolls with different barrel lengths, and the all-hydraulic adjustment systems for:

  • High adjustment precision
  • Close rolling tolerances
  • High reproducibility
  • Automatic roll gap control (AGC) over the entire section length
  • Automatic zeroing of the rolls under load (roll kissing)
  • Automated determination of actual mill stand modulus after roll change
  • Precise roll gap presetting
  • Automatic overload protection

SMS group delivered more than 90 CSS® stands since 2000.

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Our CRS® straighteners are ideal in medium and heavy section mills. They come with these benefits and technologies:

  • Higher product quality and better residual stress behavior
  • Symmetrical application of the straightening force with the rollers supported on both sides
  • Automatic straightening roller changing within 20 minutes
  • Fixed straightening roller pitch for a large product range
  • Automated straightening roller changing with fewer personnel

Built in sandwich design, the straightening shafts are supported in bearings on both sides. All nine straightening shafts are driven individually, and hydraulic cylinders adjust the shafts under load.

Key features of our straighteners:

  • Overload protection
  • Backlash-free straightening roller installation
  • Maximum straightening roller concentricity
  • Automated setting of all elements according to the straightening data
  • Position transducers for reproducible recording of all the setting values

SMS group has supplied 15 CRS® straighteners since 2001.

Electrical and automation systems

Service

Downloads

Contact

SMSgroup Krieg, Elmar

Elmar Krieg

SMS group GmbH
Ohlerkirchweg 66
41069 Mönchengladbach
Germany

Phone : +49 2161 350 1724
Fax : +49 2161 350 1753