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Section Straightener

Section Straightener    Section Straightener


Arcon offers the broadest range of high-performance section straighteners that are available today. The various types of section straighteners include: fixed centre, variable centre, multi-strand, two plane and between housing. This encompasses the widest range of ferrous and nonferrous sections that Arcon machines can straighten with accuracy and efficiency.

Our broad range of high performance section straighteners are engineered to rolling mill standards. These machines have a heavy fabricated steel main frame and can be built to provide single, two, three or variable operational speeds to suit individual requirements. Common to all the designs, the top rolls are driven with the top work roll shafts providing the option of motorised or manual adjustment. 



Large roller-type straightening machines with variable roll centres are used in straightening a wider range of sections than would be possible with a machine having fixed centres. As an example, our 11/18 has centres variable between 1,140 and 1,780 mm and is used to straighten various rolled steel sections from 150 x 150 mm angles up to very heavy sheet piles and large beams.



Arcon precision section straightening machines are used worldwide, giving high standards of straightness and surface finish and controlled surface hardness. Where sections are straightened in line, immediately following the rolling mill cooling bed, multi-strand straightening often needs to be utilised to keep pace with the output of the rolling mill. Multi-strand straightening was initially carried out using cantilevered roll shaft type machines. However, to improve rigidity and to ensure that equal work was carried out on all sections, the between-housings design machine was utilised, incorporating quick roll changing. Depending on productivity requirements, the straightening machine may be either wide bodied and slow running or narrow bodied and relatively fast running.



The two plane machines are often used for straightening round, square and hexagonal material that enables the sections to be straightened on two planes in one pass. The between-housing design for straightening of square and round billets provides extra rigidity when long runs of similar profile materials are in demand. The rolls are mounted between the housings, which enables the machine to have shorter roll centres and therefore, handle a larger range of sections than would normally be possible. These machines have been specifically designed for the straightening of billets in steel mills.



In an effort to maximise efficiency and minimise downtime, Arcon designed a roll change system that allows for an entire set of 11 straightener rolls to be changed in less than two hours. This innovative cassette roll change system allows any number of straightener rolls to be removed by one cassette assembly. A second cassette assembly is pre-loaded with rolls to conform to the upcoming product run, allowing the straightener to be changed over in less time than the mill, reducing potential downtime between product size changes on the mill.