Statistical Evaluation of the Wear Behaviour of Diamond Impregnated Tools Used for the Core Drilling of Concrete

Kansteiner, M.1, a; Biermann, D.1, b; Dagge, M.2, c; Müller, C.2, d; Ferreira, M.3, e; Tillmann, W.3, f

Institut für Spanende Fertigung, Technische Universität Dortmund, Baroper Str. 303, 44227 Dortmund
Lehrstuhl Statistik mit Anwendungen im Bereich der Ingenieurwissenschaften, Fakultät Statistik, TU Dortmund, 44221 Dortmund
Lehrstuhl für Werkstofftechnologie LWT, Technische Universität Dortmund, Leonhard-Euler-Str. 2, 44227 Dortmund

a); b); c); d); e); f)


Core drilling with diamond impregnated segments is a widely used application in the construction industry for the generation of openings in different types of materials like reinforced concrete. The segments consist of synthetical diamonds bonded in a metal matrix and are manufactured by powder metallurgical processes. Due to the necessary and desired wear of the tool, they are called self-sharpening tools. This paper deals with a detailed analysis of the tool wear in core drilling, and single segment tests are presented. The analysis is based on process force measurements and a microscopical analysis of the segments. The test methods allow a detailed analysis of the wear progress, and statistical methods are utilised to assess and characterise the wear behaviour of the used segments. Certain wear processes like diamond break outs are identified and correlated with the process force signals to develop tool wear models for the prediction of the tool life.


In: EURO PM 2017, International Powder Metallurgy Congress & Exhibition, 1.10.-5.10. 2017, Milan, Italy