New Interlinked Drawing Line for Steel Tubes

ASMAG, Austria finalized commissioning of a new manufacturing line for steel tubes at Wiederholt GmbH in Germany.
The new line allows an increase of output and a significant improvement of product quality. With a tube diameter of up to 125 mm and a maximum length of 12 m it represents the first interlinked production line of its kind in Germany.
After passing a hydraulic in-line pointing press the steel tubes are drawn on a 1200 kN two-fold draw bench with rack and pinion drive.
The new developed multiple pre-bench allows permanent availability of two different plug rod dimensions.
A head and tail sawing facility cuts both ends of the drawn tube. Chips are removed by a new designed integrated blow-off device.
With the 10 roll straightening machine RRM-pro 125/420/10 ASMAG realized a benchmarking machine for tube straightening. The customer’s straightness demands and even more challenging expectations could be exceeded far.
Tubes are run end to end before ultra sonic and eddy current testing and separated afterwards again.
A new developed multiple saw, consisting of 4 single saw units, allows automated positioning of each saw depending on specific requirements.
After a final visual check the tubes are joined automatically in hexagonal shaped packages.

The essential benefits of the new line are:
Material output could be increased significantly due to a high line speed and preventing of not straightened tube ends. A robust design and implementation of new ideas led to an essential increase of product quality.

Special Attention was focused upon environmental requirements and to this avail new standards have been accomplished.

Not least an amicable and constructive cooperation between ASMAG and Wiederholt was responsible for the success.