TPT March 2010

T echnology U pdate

Improving carbide-tipped sawing technology

GEBR Lennartz GmbH & Co KG, from Remscheid, Germany, one of the market leaders in manufacturing and supplying carbide-tipped circular saw blades for the ferrous and non-ferrous industry, is presenting a new development in saw blade technology. The X-max blade is a circular tipped saw blade designed for cutting special and high alloy steel produced by the seamless tube, forging, aircraft and automotive industries. Due to continuous enquiries for circular saw blades for cutting high chromium steel with more than 10% chrome, nickel base alloys, stainless steel, Duplex and Super Duplex, Lennartz said it is proud to offer a suitable cutting tool to meet

the customer’s requirements. Previously, it was almost impossible to cut these materials economically with carbide-tipped saw blades because of the very low wear life in relation to the cost of the blade. Successful trials together with targeted customers, users and machine manufacturers have shown that the X-max blade is able to achieve life times which are five to seven times higher than conventional circular saw blades. Cutting the X20Cr13 grade, the X-max reached a material removal of nearly 16m². Conventional blades reach a material removal of 3m² maximum. The same results were proven when cutting P91/T91. The achieved wear life is 9–13m² compared to 3–5m².

In the past alloys that were nearly impossible to cut with any saw blade, are now easy work for the X-max blade. With the X-max blade one customer achieved a material removal of more than 7m² when cutting super duplex material. Further wear life tests and enhancements are planned to improve the blades’ performance even more. Using the X-max blade is an enormous advantage for every application with difficult alloys or steel grades. This applies for cutting tubes (single or layer) as well as for cutting billets. Gebr Lennartz GmbH & Co KG – Germany

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

Manufacturer of pipe fittings for refineries and powerstations

Mawo Pipefittings’ stainless steel pipefittings

MAWO Pipefittings GmbH produces equipment accessories for the refinery, chemical, power station and shipbuilding industry. It specialises in manufacturing pipe fittings unalloyed, alloyed, stainless and other materials and it uses both conventional machinery for single item production system and its controlled tuning and milling centre in order to produce bulk quantities. It stocks more than 70 different

materials in its large material warehouse. Additionallly, it stocks every grade of olet and high pressure fittings according to ASME/ASTM and pipe nipple with NPT – thread in all marketable materials. In stock it has: welding nozzles, thermometer nozzles, laval nozzles, grommets, added nozzles and lateral tees. Mawo Pipefittings – Germany Website: www.mawo-pipefittings.de

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M arch 2010

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