71 KB365 KB67 KB200020242005Ćurčija, DušanMamuzić, Ilija15 straništevilka:3letnik:39str. 61-75ISSN:1580-2949COBISSID:393130URN:URN:NBN:SI:doc-PT7T2B4LenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijeemulzijemazivaReynoldsove enačbesuspenzijeLubricants for the rolling and drawing of metals|A survey is given over lubricants for rolling and drawing of metals. Emulsions, suspensions, natural fats and oils and synthetic lubricants are presented. Fluid mechanics Reynolds equations are used for the calculation of the lubricant lyer in the entering section of the metals deformation zone. Colloide chemistry is used for the analysis of surface active additions on lubricant properties, lubricant layer thickness and the wetting angle. Lubricants for hot rolling based on suspensions and glass are presented also. Special attention is given to the removing of lubricant from the surface after processing, to measures for the protection of workers and to ecological problems of used lubricantsDan je pregled maziv, ki se uporabljajo pri valjanju in vlečenju kovin. Opisane so emulzije, suspenzije, naravna olja in masti ter sintetična maziva. Reynoldssove enačbe iz mehanike tekočin so uporabljene za izračun debeline sloja maziva na prerezu kovine na začetku deformacijske zone. Koloidna kemija je uporabljena za opis vpliva površinsko aktivnih snovi na lastnosti maziva, na debelino sloja maziva in na kot omočljivosti. Opisana so maziva za vroče valjanje na osnovi suspenzij in stekel. Posebna pozornost je namenjena odstranitvi sloja maziva s površine kovine po procesiranju, ukrepom za zavarovanje delcev pri delu in okoljuTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije