Authors:
Berend Denkena (Institute of Production Engineering and Machine Tools, Germany),
Benjamin Bergmann (Institute of Production Engineering and Machine Tools, Germany)
Abstract:
The powder mixture properties determine the sintering results of vitrified bonds for grinding tools. In this paper the influence of the mixing process on porosity of the sintered bonds through the bulk density is shown. Therefore, the bulk density of the mixture and the abrasive concentration and sintering temperature and holding time were varied. Porosity, shrinkage and bending fracture stress were determined to evaluate the influence of these parameters on the sintering result. It was shown that there is no significance influence of abrasive concentration, sintering time and temperature on porosity, shrinkage and bending fracture stress. Instead the influence of the abrasive concentration on the porosity of the powder mixture and the influence of the porosity of the powder mixture on the shrinkage was shown. These outcomes are important for designing moulds and optimizing sintering results.
DOI:
https://doi.org/10.59499/WP225370589