Displaying items by tag: butting

In Punta Pereira, Colonia department, a new chemical pulp factory is being constructed based on a joint venture of Stora Enso and Arauco.

A good performance and high flexibility during a comparable project in the years from 2006 until 2008 have for sure been important reasons for order placement of this
actual Uruguayan large scale project. Even at that time BUTTING was involved in the construction of the chemical pulp factory in Fray Bentos with more than 3,500 tons of
fabricated and delivered material.

For BUTTING the total order volume amounts to 50 km of pipes and 60 internal vessels. BUTTING Anlagenbau fabricates, delivers and assembles vessels and pipelines coming up to approx. 80 per cent of the overall required raw material.

BUTTING delivers the material (pipes and fittings) for the pipeline bridges and equips the pulp pipeline and the drying line with vessels and pipes. In this area also prefabrication of the pipelines and the subsequent assembly on site will be assumed. The appropriate pipes have been produced in Knesebeck production, prefabricated in
Schwedt works since December 2011 and will be assembled at Uruguay location starting the second quarter 2012.

For installation of the delivered parts, we actually calculate with 210 fitters in Punta Pereira – an internationally mixed team led by an experienced BUTTING management team. This order is highly sophisticated not only for the reason of a high capacity. “An on-schedule supply and a smooth organization at site – at a distance of
more than 11,000 kms – require a logistical master accomplishment” Debora Stimpel says. She works in a leading position on this project. “Another problem that cannot be
influenced can be founded in the highly unsteady weather conditions at the location – semi-tropical rainstorms are no curiosity”, she supplements.

We at BUTTING are sure to successfully perform this large-scale project as well.

BUTTING – Progress by Tradition

The BUTTING HeRo^® (Heat-resisting Roller) has been used since the mid-1990s very successfully by the world’s leading steel producers. As a transport roller, it is an integral part of heat treatment facilities and is constructed and produced individually for the relevant annealing task. External diameters from DN 100 up to DN 700 and wall thicknesses of up to 60 mm are always possible.

Now a customer has ordered the largest size ever produced by BUTTING: 400 x 35 mm, and 5,530 mm in length.

The benefits of the BUTTING HeRo^® convinced our customer, whose order was for 10 furnace rollers. The roller body, at the heart of the HeRo, consists of a high-quality BUTTING pipe made from plate with optimum forming and storage tolerances, made from the material 2.4633. This is suitable for very high temperatures of up to 1,200° C. A single furnace roller weighs an impressive amount: more than 1,600 kg. The overall volume for the order thus amounts to more than 16 t.

The 10 HeRos were delivered at the beginning of November. They will be used in a heat treatment facility for steel plates with wall thicknesses from 6-150 mm and temperatures from 600-1,160° C. Since this facility is in operation on a daily basis 24/7 for 365 days a year, a good deal is riding on the robust BUTTING HeRos^®: Furnace downtimes because of changing the roller are to be minimized, thus reducing the cost of maintenance measures and downtimes.

The individual design of the BUTTING HeRo^® brings crucial benefits to the customer. These include its outstanding durability through the use of materials resistant to high temperatures and with a low oxidation tendency and good wear resistance. In addition, we offer careful processing until the product is ready to be installed, the lowest possible tolerances required by the manufacturing process and the high running accuracy which this ensures. Furthermore, if after many years in use there is any loss of straightness and roundness tolerances, there is a possibility of reprocessing by special straightening and calibration procedures. The prerequisite for this is provided by the mechanical properties of the material selected, the roller bodies formed from steel plate.

However, the crucial advantage of HeRo is that no water cooling is required, which is sometimes necessary with traditional furnace rollers; this considerably reduces energy costs. Thus the amortisation period of a BUTTING HeRo^® is distinctly shorter than for other materials.

Let the BUTTING HeRo^® convince you!

BUTTING - Progress by Tradition

Stainless steel pipes can be manufactured in either welded or seamless form.

The decision as to which manufacturing process should be used for a particular purpose depends mainly on the wall thickness/diameter ratio required and on the specified pipe tolerances.

In many cases, the benefits of the welded pipe predominate, and so this method is now generally used in western European industry.

For outside diameters of up to DN 100 with a diameter/wall thickness ratio of 5:1 or less, however, seamless pipes are usually better value. But wall thicknesses of less than 3 mm are not available for heat-formed seamless pipes. For welded pipes, the minimum diameter/wall thickness ratio is a constant 10:1, thus offering a wide range of possibilities.

The individual production of longitudinally welded pipes also enables an order for precise wall thicknesses – that is cost-effective and saves resources.

Due to the manufacturing process, differences in wall thicknesses and thus deviations from symmetry (eccentricity) may arise in seamless pipes. It is different with longitudinally welded pipes: The regularity of the coil or plate thickness means that here the wall thickness tolerance is the same across the entire pipe surface – there can be no eccentricity.

The number of alloys available for each group of materials is limited in the case of heat-formed seamless pipes, whereas coils and plates for the production of welded pipes are available without any problems in a wide variety of materials.

When manufacturing seamless pipes, the length manufactured depends on the weight per metre or pipe. In welded form you have a choice of up to 12 m or 18 m without circumferential welds.

The pipes welded on the basis of the valid calculations (AD-form 2000 / ANSI B 31.3 / ASME VIII) are of the same quality as seamless pipes, providing a 100 % weld check has been performed. Corrosion resistance in the weld seam area is maintained at a constant level by the use of higher-alloyed welding additives.

Would you like more information and comparison criteria? Then click here to be taken to our flyer on the subject.

BUTTING - Progress by Tradition