Tubular products. A steel producer's know-how lies in by thu16555


									Ruukki article: Tubular products

A steel producer’s know-how lies in the

PONSSE Ergo 2008 harvester - Ruukki’s high-strength Optim HS 700 steel is used in the harvester boom.

With expertise in both steel and                                                  ”The steel raw material comes from our own
mechanical engineering, Ruukki has a                                              production. We have tailored material for each
head start in the development of various                                          dimension to optimise the relationship between the
                                                                                  reach and strength required for the tube concerned,”
steel applications. Ruukki’s extensive                                            explains Juha Ikkala, Product Manager for hollow
offering of tubular products includes                                             sections at Ruukki Metals.
tubes     engineered     for    different
applications. These tubes are made from                                           Ruukki’s direct link between tube production and the
steel grades developed specifically for a                                         steel works ensures tubes can be made from a newly
particular application by Ruukki's own                                            developed steel grade at short notice. It also enables
                                                                                  an immediate study of tube welding properties and
product development.
                                                                                  other behaviour.

                                                                                  “This is why our product development is considerably
                                                                                  faster than that of our competitors. A preliminary

More information: info.metals@ruukki.com
Ruukki article: Tubular products

appraisal of the suitability of a future steel strip for
tube production is already available,” Ikkala says.

Unique products for the transportation equipment

Ruukki’s offering of tubes and profiles has been
developed to meet customer needs and includes all
steel grades from formable to ultra high-strength
steels. Since it contains minimum carbon, Ruukki’s
advanced modern steel raw material improves steel
weldability and surface quality.

Highly advanced steel products include components          In concrete mixers it is possible to use high-strength steel in the boom and
made of Optim steels, which have excellent strength,       wear-resistant steel in the concrete pump. Here: A concrete truck from Saraka.
as well as Raex steels, which have excellent wear-
                                                           Ruukki’s precision tube Form combines high strength
                                                           with good formability. Typical applications for the
Typical, suitable applications for Optim steels are in     Form product family can be found in the automotive
the mechanical engineering industry. Optim enables         industry. Form is ideal for different safety parts, such
light, thin steel structures and even structures that      as impact protection or bumpers, which absorb
would be impossible using traditional soft steels.         collision energy within a short distance very fast. Steel
                                                           strengthens the whole time when absorbing impact
                                                           energy and so protects the persons inside the vehicle.
Hard, wear-resistant direct-quenched Raex steel is a       Another typical application area is products, such as
unique product from which also tubular products are        tools, where both lightness and strength are required.

                                                           With expertise gained in Nordic climatic conditions,
“Raex can be used, for example, in vehicles                Ruukki also has unique cold-resistant tubes, the
transporting wear-resistant material, such as concrete     impact strength of which can be guaranteed down to -
pumping and transfer systems. No other supplier can        60C. No Central European or Asian competitors can
offer a direct-quenched steel strip comparable to          provide similar tubes.
Raex. This means similar wear-resistant tubes are not
simply available elsewhere,” Ikkala proudly explains.
                                                           Customisation even for heavier tubes

                                                           Ruukki has over 10 production lines, which enable
                                                           customised tubular product solutions for every need.

                                                           Ruukki’s latest laser cutting technology enables the
                                                           laser cutting of heavier tubes and profiles up to 508
                                                           mm in diameter. Tube ends can be formed accurately
                                                           into the required shape and angle, which makes tube
                                                           fittings easy to form.

More information: info.metals@ruukki.com
Ruukki article: Tubular products

“Our laser for heavier grades is probably the biggest
pipe laser in Finland and enables us to make very
complex shapes in heavy tubes. We also have four
smaller pipe lasers. We can provide high-strength
tube, which has been shaped to customer needs,”
says Kari Salin, application manager at Ruukki

                                                                               Vapo peat harvester: Thanks to thinner Optim hollow sections, peat harvesters
                                                                               can carry a higher payload.

                                                                               The lightness and strength of Optim tubes together
                                                                               with the wear-resistance of Raex make an unbeatable
                                                                               combination. Machines are both lighter and more
Ends of heavy tubes shape cut by pipe laser. The tube ends can be accurately   durable. The lightness of the structure benefits the
formed to the desired shape and angle.                                         end-user in the form of higher pay loads and lower
                                                                               fuel consumption.

Lighter, more durable peat machines
The peat machines of Vapo, the world’s leading peat
machinery manufacturer, are an example of a
mechanical engineering application where Optim and
Raex steel grades have been used in tandem with
Ruukki’s advanced laser cutting machinery.

Vapo’s miller mills a 20-40 mm thick layer of peat from                        Juha Ikkala, Product Manager, Ruukki Metals
                                                                               Kari Salin, Application Manager, Ruukki Metals
the peatland surface for drying for use as fuel.
Ruukki’s wear-resistant steel Raex 500 is used for the
milling blades.

The milled peat is collected into wagons, which
feature Optim 700 MC tubes in the frame structure.
Thanks to high-strength Optim tubes, the wall
thickness of the wagons could be reduced from five to
three millimetres.

More information: info.metals@ruukki.com

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