TPT May 2015

Tube scarf ing systems & tools

Edge scarfing equipment DURATRIM edge scarfing equipment for welded tube mills, from STE (Superior Technologies Europe), enables the manufacturer to trim and clean the steel coil’s edges as it enters the tube mill prior to the forming station.

The Duratrim edge scarfing equipment increases yield and weld quality

Clamed benefits of this process include reduced welding energy; consistent homogeneous weld integrity; reduced strip width/costs; ability to weld more challenging materials; and less OD/ ID welding flash (bead). A consistent strip width leads to fewer rejects. The unit runs dry, without emulsion.

Commercially slit coils can suffer from as much as 35 per cent of their edges not being cut cleanly, whether due to bad practices, poor quality material or worn tooling. The result is that edge presentation at the welding point will be poor, and welding heat has to be increased to melt more material. Excessive ‘squeeze pressure’ also has to be applied to avoid defects. These issues will increase material and energy costs, as well as creating an excessively large inside/outside welding flash that then has to be removed. The Duratrim edge scarfing system is designed to remove these problems, and trims the strip edges at the required rate, ensuring clean and parallel faces meet at the welding station.

All sets of inserts are mounted on a floating mechanism, ensuring constant material removal even with movements in the strip. STE also offers a comprehensive range of welding consumables, including ferrite cores, impeders, induction coils and OD/ID scarfing inserts. Superior Technologies Europe Ltd – UK Fax: +44 1256 47 99 33 ID scarfing GEM Tool Corp designs, engineers and manufactures ID scarf and bead rolling systems. The systems’ design can be incorporated into most existing tube mills. The company can also custom design systems for size ranges down to 12mm ID. In addition to the scarf systems, Gem Tool manufactures solid carbide cutting tools and forming rolls. Email: sales@st-europe.co.uk Website: www.st-europe.co.uk

The ‘floating’ design of the scarfing assemblies allows the unit to follow the path of the steel strip while maintaining positive contact pressure on the scarfing inserts. The system uses four sets of special scarfing inserts, which remove material from the strip edges, top and bottom. The inserts are supported and kept in position by eight pneumatic cylinders, the pressure of which is adjustable, enabling different amounts of material to be removed.

Tube ID scarfing systems – ready for Industry 4.0

as ID scarfing mandrels, impeders, mounting units and custom-made parts as a set of tow bars for adapting to various tube mill distances. Alpha Metall manufactures all of the items in its factory in Germany. Commissioning in the customer’s factory is also possible with engineers sharing Alpha Metall’s know-how during commissioning for excellent tube ID scarfing results. Alpha Metall GmbH & Co KG – Germany Fax: +49 6831 506958 Email: info@alpha-metall.de Website: www.alpha-metall.de

ALPHA Metall is among the few manufacturers of machinery who supply PLC-controlled production units for Industry 4.0 tube mills for communicating with main PLC tube mill boards. During recent years Alpha Metall has installed several PLC- controlled tube ID scarfing systems as turnkey projects at well-known tube manufacturers around the world. The tube ID scarfing systems are state-of-the-art and aim to provide the best tube ID scarfing results. They can be installed in all tube mills and consist of standard items such

Gem Tool Corp – USA Fax: +1 414 762 0615

Email: sales@gemtoolcorp.com Website: www.gemtoolcorp.com

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M ay 2015