TPT March 2017

T E CHNOLOG Y

Ten-roll tube straightening machines BÜLTMANN has been awarded an order for a straightening machine by an Indian manufacturer of precision tubes. 12m, and material strength up to 1,000 MPa. The machine will also meet the requirement of straightening accuracy of < 0.3mm/m.

project phase, in close collaboration with the customer. The fully automatic tube bundle separation, for example, ensures high manufacturing flexibility in-line with the customer’s existing tube production line. Bültmann GmbH – Germany Website: www.bueltmann.com Cutting heavy ID scarf GEBRUBER Lennartz GmbH & Co KG, Germany, is a manufacturer and supplier of carbide-tipped circular saw blades for the ferrous and non-ferrous industry. It has announced a new product from the ECOmax family. The ECOmax circular saw blade is a new development and is customised for cutting tubes and profiles with heavy ID scarf on flying cut-off units. Previously, conventional blades were damaged after only a few cuts because they cut the high strength weld bead inside the bottom of the tube. The service life of the blades was poor and the cost per cut was high, resulting in a cutting application that is not economical. Because of its special tooth form and cutting geometry, and in combinationwith a new proprietary coating, the ECOmax saw blade is suitable for this application. This new design works successfully on single head machines as well as on twin saws with the simultaneous operation of two saw blades, to meet the customer’s requirements and decrease the cost per cut. Successful trials and on-going production usage, together with target customers and machine manufacturers, have shown the ECOmax blades achieve 7m of material removal on welded tubes with wall thickness up to 14mm. Further wear life tests and enhance- ments are planned to improve the performance further. Using the ECOmax blade is an advantage for every application with heavy ID scarf.

The machine, equipped with modern straightening technology, will be used for the production of precision tubes for the automotive industry. The tube specifications are diameter 45 to 175mm, wall thickness 3 to 15mm, length 4 to

The straightening machine is equipped with charging and discharging devices which have been partially tailored to the customer’s demands. The specific design has been elaborated in the

C O N T R A S T

info@contrastsale.com Tel: ++39 0421 272337

Via Umbria, 15 30026 Portogruaro - VE - Italy

www.contrastsale.com Fax: ++39 0421 272337

• Impeder cores • Fiberglass tubes • Complete impeders • Copper inductors

• HSS blades

• Hard metal inserts • Carbide base plates

• Friction circular saw blades • Knives for guillottine cut-off

• Tool holders • Cutting rings

• Tools for slitting lines

INSIDE SCARFING TOOLS

• Rolls for tubes

• Capacitors for H.F. welders

• Tube’s cleaners

Gebr Lennartz GmbH & Co KG – Germany

Email: info@lennartz.de Website: www.lennartz.de

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MARCH 2017