TPT November 2008

C utting, S awing & P rofiling T echnology

Bi-metal band saws with higher performance

The new RIX-Formula SPF band saws provide higher cutting speeds, larger feed values and outstanding cross section qualities. This is even the case with very hard steels, austenites and high- temperature alloys. Extended application tests using RIX- Formula SPF band saws have been undertaken at a big German steel distributor. The test results show economical and efficient cutting speeds and cut rates – close and sometimes better than the values reached by TCT band saws. Even high-tensile steels were cut with a cutting speed of more than 60 to 70m/min. In addition, this performance did not have any negative effects on accuracy. On a cutting length of 700mm a tolerance of less than 0.1mm could be measured. These high cutting values had no negative effects on cross-sections, leading to finely structured and spotless cross sections. Sägen-Mehring GmbH – Germany

Sägen-Mehring, Germany, has developed a new range of high-performance metal band saws branded RIX-Formula SPF. The saws, are based on a new complex SPF-coating and multi-step procedure to improve the concealment of cutting edge coating. Using this technology, higher temperature resistance and red hardness can be achieved. The new saws have been developed in response to increasing industry requirements for metal sawing machines and cutting tools. Higher cut rates are now specified, with more cm² of cut area per minute, higher tool life and more precise cross sections. This equates to less cost per cut. In the area of cutting tools (ie metal band saws), the development stages over past years have been well documented. Bi-metal band saws are equipped with modern alloyed cutting materials made from high speed steels. The backing bands feature high resistance against tensile stress, alternating bending load and torsional stress.

It was becoming increasingly difficult to make further improvements to these components. Established and developed versions of setting and tooth geometries were, in many cases, specifically conceived for predetermined application areas, mainly for wear-resistant steels and alloys. Further improvements were predicted by using tungsten carbide as a cutting material. However, it had seemed that the long expected breakthrough could not be implemented on a wide basis. The dominant industry opinion had been that band saws with tungsten carbide tips could be used economically, especially with the availability of sawing machines with high drive capacities and short cutting times. In the search for new efficient ways to improve performance, due to existing experiences with precision cutting tools, an answer was found in coating processes and cutting edge treatment. It has been possible to achieve technically viable methods for coating of ‘coil ware’ and repeatable and exactly definable treatment methods for saw teeth.

Fax : +49 6205 20 98 496 Email : info@rix-mehring.de Website : www.rix-mehring.de

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N ovember 2008

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