YU ISSN 0354 - 8996 lll I I voLUME'2o <strong>No</strong>1 MARCH 1ee8. tribology <strong>in</strong> <strong>in</strong>dustry contents INTRODUCTION RESEARCH e. WfOVIe: Tiibology <strong>in</strong> <strong>in</strong>dustry - 20 Years With You 3 C. GHEORGHIES, O. GHEORGHIES: Predicrion of Case-harden<strong>in</strong>g Steel Behaviour <strong>in</strong> Roll<strong>in</strong>g Tiibosystem 5 D. AIv[AF!{I{DEI, M. COZMINCA, D. SEMENCIUC: Research and Method Concern<strong>in</strong>g the Experimental Values of the Average Friction Coefficient on the Tool's Fl<strong>in</strong>k <strong>in</strong> Mach<strong>in</strong><strong>in</strong>s of Carbon Ste-els with Speedsuptol000m'm<strong>in</strong>-l ...:... 10 E FLORIAN, D. L ALEXANDRU: Synthetic <strong>No</strong>n-newtonian Fluids Based on Polymer Gels II. Rheology of Polymer Gels for Determ<strong>in</strong>e Their Flow <strong>in</strong> Pipe-l<strong>in</strong>e 16 V. F. BEZAIZICHNY, V V. NEPOMILUEV: Calculation of The Cutt<strong>in</strong>g Conditions Tak<strong>in</strong>g <strong>in</strong>to Account The Criteria of The Cost and Productivity 27 T F. KALMYKOVA T M. MOISEEV,\ O.V KHOLODILOV: On Statistical Description of Solids Friction 24 M. OGNJANOVIC, P. OBRADOWC: Modell<strong>in</strong>gof High-pressure Dynamic Seal<strong>in</strong>g Jo<strong>in</strong>ts 27 NEWS JJ BOOKS AND JOURNAIS SCIENTIFIC MEENNGS 35
B.IVKOWC <strong>Tribology</strong> <strong>in</strong> <strong>in</strong>dustry - Z}Years With You In already distant 1978, The Council of Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g <strong>in</strong> Kragujevac had brought a decision, at the proposal of the Scientific-Educational Board, on beg<strong>in</strong>n<strong>in</strong>g with publication of a scientific journal entitled "TRIBOLOGY IN IN- DUSTRY'', The orig<strong>in</strong>s of the entitled "TRIBO- LOGYIN INDUSTRY" journal lie <strong>in</strong> Publications of Laboratory for Metal mach<strong>in</strong><strong>in</strong>g and Tiibolory, that were published occasionally, as edition.s of Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, s<strong>in</strong>ce I974. Dur<strong>in</strong>g that period, from 1974. till 1978., 10 issues were published, <strong>in</strong> which the results were presented of the scientific-research work, realized through projects, ma<strong>in</strong>ly form the area of the tribologr of metal cutt<strong>in</strong>g. Members of the First Joumal's Council were: S. Spasojevii, from The Chamber of Commerce of Serbia; Mr. V. Kaliian<strong>in</strong> and Z. Prokii - ZCZ;Prof. Dr S. Savar - Faculty of Mach<strong>in</strong>ery and Shipbuild<strong>in</strong>g, Zagreb;Prof. Dr D. Zelenovii - Faculry of Technical Sciences, <strong>No</strong>vi Sad; Prof. Dr Branko Ivkovii - Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Kragujevac; M. Voljevica - Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g. Mostar; Z. Milut<strong>in</strong>ovii - The Chamber of Commerce of Kragujevac; and M. Lt.zic - Faculry of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Kragujevac. The Council rvas rvork<strong>in</strong>g, mii<strong>in</strong>ly with these members and small changes, until 1992., when ceased the need for its eistence. The First Editorial Board of the Journal consisted of: Prof. Dr B. Ivkovii - Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Kragujevac - Editor <strong>in</strong> Chief;Prof. Dr R. Zgaga - Faculty of Mach<strong>in</strong>ery and Shipbuild<strong>in</strong>g,Zagreb; prof. Dr S. Sekulii - - Faculty ofTechnical Sciences, <strong>No</strong>vi Sad; Prof. Dr M. Radovanovii - Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Belgrade; Mr. Z Palundii - Faculty of Mechanical Eng<strong>in</strong>ee r<strong>in</strong>g, Kragujevac - Secretary; F. Pavlovii - Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Mostar; R, Nikolii - FAM, Km(evac; and M. Simovii, Editor. S<strong>in</strong>ce 1986. till 1992. mernbers of Editorial Boarcl were also: Prof. Dr A. Rac, - Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Belgrade; Prof. Dr J. Vite- Zan<strong>in</strong> - Faculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Ljubljana; Prof. Dr M.Lazil - F:rculty of Mechanical Eng<strong>in</strong>eer<strong>in</strong>g, Kragujevac. S<strong>in</strong>ce 1991. until present time, the Journal is edited by an <strong>in</strong>ternational Editorial Board rvhose members are famous scientists from several countries (Belarus, Poland, England, IJSA, \'ugoslavia, N{acedonia). The core of the Boirrd consists of scientific workers fiom Faculties of Mechzrnical Engirteer<strong>in</strong>g flom Kragujevac and tselgrade, and Faculty of Technical Sciences from <strong>No</strong>vi Sad. With translation of texts for years are engaged Prof. Dr RuZica Nikolii (English) and Mr, A. Milenkovi6 (Russian). The structure of the Journal did not vary sirnificantly <strong>in</strong> past years. Constant sections, until today, were IN- TRODUCTION, RESEARCH, BOOKS AND JOURNALS, and SCIENTIFIC MEETINGS. Occasionally, there were sections like TRIBOLOGICAL DICTIONERY, FOR DIRECT PRACTICE, and NEWS, thert existed <strong>in</strong> several issues, but except for the NEWS, they did nt-lt get the permanent character. Abstracts of all the papers were published, until 1992., both <strong>in</strong> English and <strong>in</strong> Russian, on the last pages of Journal, <strong>in</strong> fcrm of cards, as it is frequently done <strong>in</strong> scientific and expert journals. S<strong>in</strong>ce 1992., however, the structure of the Journal has changed somewhat. Abstracts of each paper are pr<strong>in</strong>ted, <strong>in</strong> English and Russian, at the end of each paper, what seems to be more convenient for the readers, 1o have complete papers and abstracts at one place, and abstract irr Serbian is pr<strong>in</strong>ted at the beg<strong>in</strong>n<strong>in</strong>g of each paper, below the title. Besides publish<strong>in</strong>g the Journal <strong>in</strong> Serbian, with abstracts of papers <strong>in</strong> English and Russian, s<strong>in</strong>ce 1996. as separate issue is published the English version of the Journal, with separate ISSN number, entitled TRI- BOLOGY IN INDUSTRY. In the first years of publish<strong>in</strong>g the Journal l'rad covered mostly the are of tribo- Iogy of cutt<strong>in</strong>g, and tribometry, Tibolog, itt itttlustry,, Volume 20, <strong>No</strong>. 1, <strong>1998</strong>. 3
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