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Low temperature joining of segmented tools for cut off grinding by adhesive bonding technology

: Wirts-Rütters, M.; Schneider, B.; Denkena, B.; Konopatzki, B.; Wloka, R.

Denkena, B. ; TU Hannover, Institut für Fertigungstechnik und Spanende Werkzeugmaschinen:
1st International Conference on Stone and Concrete Machining 2011. Proceedings : Hannover, Germany, November 23 - 24, 2011
Garbsen: PZH Produktionstechnisches Zentrum, 2011
ISBN: 978-3-943104-22-6
International Conference on Stone and Concrete Machining (ICSCM) <1, 2011, Hannover>
Fraunhofer IFAM ()

Compared to conventional bonding technology, adhesive bonding has advantages because the cutting segments are bonded to the saw blade at temperatures that cause no change to the internal stress or to the strength of the surrounding material. Adhesive bonding technology thus brings considerable benefits. The selection and qualification of the adhesive will be presented and a production module for manufacturing bonded cutting discs will be introduced. The strength values in the axial direction determined in static tests beat the value specified in the "Principles for the testing and certification of abrasive tools with diamond and boron nitride" (BGG 932 and 933, formerly ZH 675 and 676). To demonstrate the practical viability of this process, the presentation also reports results from examinations where a saw blade in a bridge saw was directly fitted with some new cutting segments. The performance of the tool was tested for granite. Cutting tests showed that the tool with the bonded cutting segments was equivalent to a brazed/welded reference tool with regards to its usage and the quality of cut.