TPT July 2019

T E CHNOLOG Y

Bültmann ten-roll straightener for larger tubes

THE Bültmann multi-roll tube straightening machines in the RRM10 series are now also capable of producing tubes of large dimensions. The new Bültmann tube straightening machine, type RRM 10/350, used for aluminium tubes, was recently successfully installed by a leading Swiss aluminium manufacturer. The machine is used for high-precision straightening of special aluminiumtubesofdifferentalloys.Sincethesetubesaremainly used in the aviation industry they have very high straightness requirements of <0.2mm/m. Exacting requirements are also imposed on the quality of the tube surface. These demands are met by using the special Bültmann hyperbolic roll contour in combination with a special processing principle when straightening the tubes. The dimensional range is from Ø90 to 350mm with wall thicknesses of 4 to 15mm and a starting length of 6 to 8m. The wide range of dimensions requires increased flexibility from the straightening machine and the handling equipment – as it is being used for both thick-walled and extremely sensitive thin-walled tubes. Special tube handling systems based on vacuum suction and special entry and exit channels in front of and behind the straightening machine are used. The fully automatic straightening line, with an operating weight of more than 150 tons, is based on the robust Bültmann ring frame construction and also complies with the most recent EU machinery directive for safety. A special measuring system, consisting of combined straightness and geometry measurement, has been imple- mented to monitor and maintain the quality requirements of the end products. This ensures maximum process reliability and transparent quality monitoring for the end user. Equipped with a transparent visualisation concept and corresponding interfaces, the straightening machine also meets current Industry 4.0 requirements.

Increase yield and weld quality while reducing your downtime EHE Consumables is the world’s leading manufacturer and supplier of high-frequency welding components for the tube and pipe industry. With 35 years of experience and an ISO 9001 certification , we are ideally positioned to offer our customers the best solutions available. • Impeders (through flow / return flow / manifolds / specials) • Ferrite cores • Impeder casing • Induction welding coils (coil holders / downlead assemblies) • Canticut ID scarfing systems (4.5 inch – 26 inch pipe) • OD scarfing inserts and tool holders • Edge scarfing systems • Comprehensive range of custom-built solutions • Filtration systems

Bültmann GmbH – Germany Fax: +49 2394 18 171 Email: info@bueltmann.com Website: www.bueltmann.com

www.eheconsumables.com

Multi-roll tube straightening machine

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JULY 2019