Development of the microbiological population in water miscible metal working fluids

• Autores: Bernhard Seidel, A.G Huesmann Cordes, A. Rabinstein, E Brinksmeier
• Localización: Proceedings of the VIII Iberian Conference on Tribology: Conference proceedings / Ana Eva Jiménez Ballesta (aut.), Tulia Espinosa Rodríguez (aut.), Noelia Saurín Serrano (aut.), Joaquín Arias Pardilla (aut.), María Dolores Bermúdez Olivares (aut.), 2015, ISBN 978-84-606-8904-1, págs. 163-170
• Idioma: inglés
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• Resumen

  • The deterioration of metal working fluids (MWFs) due to the microbial colonization and degradation is a considerable economic factor in the metal working industry. Microorganisms (MO) are able to metabolize almost all components of MWFs and thus lead to a loss of its function by the reduction or depletion of additives. Microbial growth cannot be avoided completely, although various methods exist to reduce the bacterial load in MWFs. This paper presents a study on the colonization of MWFs by bacteria and fungi in an industrial environment. The cooling lubricants have been periodically examined based on biological and chemical methods. The level of the total bacterial load in the lubricant is considered as well as the composition of the species community and its development over the evaluation period. With regard to the increasing relevance of environment friendly processes, a conventional mineral oil based MWF has been compared to a product based on renewable resources.