TY - GEN

T1 - Determination Of The Influence Of The Mixing Quality On The Grinding Tool Bond After Sintering

AU - Denkena, Berend

AU - Bergmann, Benjamin

AU - Geschwind, Thomas

N1 - Funding Information: The research and development project "Knowledge-based design of the manufacturing process of grinding tools using sintering in lost forms" (SemiFS) was financially supported by the Federal Ministry for Economic Affairs and climate protection within the central innovation programme for SMEs (ZIM). The authors would like to thank the Federal Ministry for Economic Affairs and climate protection and the project partner BDW-BINKA Diamantwerkzeug GmbH. The responsibility for the content of this publication lies with the authors.

PY - 2022

Y1 - 2022

N2 - The powder mixture properties determine the sintering result 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 significant influence of abrasive concentration, sintering time and temperature on porosity, shrinkage and bending fracture stress. Instead it was shown, that abrasive concentration has a negative influence on the porosity of the powder mixture. With increasing the concentration from two to ten Vol% the porosity of the powder decreases at about 1.6 Vol%. Further the shrinkage has also a negative influence on the porosity of the sintered pellets. Here, with increasing the shrinkage about six Vol% the porosity of the sintered pellets decreases about four Vol%. These outcomes are important for designing moulds and optimizing sintering results.

AB - The powder mixture properties determine the sintering result 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 significant influence of abrasive concentration, sintering time and temperature on porosity, shrinkage and bending fracture stress. Instead it was shown, that abrasive concentration has a negative influence on the porosity of the powder mixture. With increasing the concentration from two to ten Vol% the porosity of the powder decreases at about 1.6 Vol%. Further the shrinkage has also a negative influence on the porosity of the sintered pellets. Here, with increasing the shrinkage about six Vol% the porosity of the sintered pellets decreases about four Vol%. These outcomes are important for designing moulds and optimizing sintering results.

UR - http://www.scopus.com/inward/record.url?scp=85160678821&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85160678821

T3 - World PM 2022 Congress Proceedings

BT - World PM 2022 Congress Proceedings

T2 - World PM 2022 Congress and Exhibition

Y2 - 9 October 2022 through 13 October 2022

ER -