No. 4, 1998 - Tribology in Industry
No. 4, 1998 - Tribology in Industry No. 4, 1998 - Tribology in Industry
YU |SSN 03s4 - 8996 Iff I I voLUME 20 NO4 DECEMBER 1ee8. tribology in industry contents RESEARCH BOOI(S AND JOURNALS SCIENTIFIC MEETINGS S. SEfUltC: Tiibological Processes in The Cutting Zone .' t27 A. RAC: Contemporary Lubricants: Role and Reqiurements I37 S. TANASIJEVIC: Characteristics of Existence and Development of Macine Elements Tiibolory N{. BABIC: Tiibology and Enerry 748 BLASXOVIC: Tiibological Behaviour of Surfacing Layers for Continual Casting Roils . I42 t54 159 160 REVIEW of research and expert papers published in journal "Tlibologr in industry" for peiiod 1989-1998. 761
UDK 52i.821.015.62 S. SEKT]LIC Tribological proces s es ira The Cutting Zone li[] TT IJ tl lt L_l :E C) E u a tll E. The paper presents the conternporary views ort tibological that' phettometta the physical in the nature metal of cutting thi pheriomt',ro processes. Besides iyro*, iitntijpii,ti,u'i, production is pointed out. Kqwords: Tibologt,curfiilg tool cuttittg 1. GEI{ERAL Tiibrjlogy has enormous importance in production processes, especially in metal machining. In this p."r"nto_ tion we shali primarily deal with triilological processes that are accompanying metal cutting. 'iiibolcgical processes in cutting conditions are charac_ terized by contact surfaces, streis and temperature field distributions, as well as fast appearance of new surf.aces, rvhat all makes these concJitions specific. In rlepth knowledge of tribological processes in general, and especiaily in the cutting p.o."rr, enables achievenent of optimum solutions both in technical end econo_ mical sense. Here ii primarily reterred to introduction of the r:ewpr'cesses, but also the special materials, b'th for tools and machined pieces (e.g. hardly machined mate_ rials that are causing problems duringtheir machining). By arraly5l5 of machining costs for one operation U6,we can state that they consist of Iabor costs R, costs rerated to tool amortizatioir A and machine costs M, i.e., f,,'hef e: Uo=R+A+M+SHp ^f, tv! - ,R = tt.k7.tk cu'P F-4.100.60 A=A1+.4r+A, t A,=lt'k,.t..4 1 I tT t Ar= kr.tr.-l Fro.t. tlr Siti,a St. Sekulit, rtipt, eng. !;.ri ti Lil s far I t : t ! us t n a l,S1,s t i t ns i:'trt:rllty of Techtzical Sciences Univenity of Novi Sart .L "=''\r; ,cntr 17.-= "" -"'.'=' r io+1 T 5r,, _ e_$!r.c;rtt.!t 60 lo= tr+ ta+ tp+ tor+ t; lo lo= t;i; Uo=E'B+t, B = tpr trr* lpr* l,=66nry. E = tt.k. .--" 1F .11.100.60 G = kr.tr-:i to- t / c) kr.N, 71= I 4.'.i.-.---1. kt'N, l, -':'-u- | (. r) ctt ! where: k1; k2; kj are the gross salaries of the productive worker; sharpener, expert worker (brigadier), respecti_ vely in din/min; /k - comntanding time, C,y - machine price; p - amortization rate; F - annual time fund; ry - efficiency ratio; A6 A5 A j - costs of replacement, sharpening and amortization, respectively; /, - main machine time; /o- time for tool replacement per machined piece; lr - auxiliary time; to, = foJz - preparation/finishing time per machined piece; 'inbelsgt, irt iitdusity, Volume 20, No. 4,lg9g. r27
- Page 4 and 5: i - number of passes; i6 - number o
- Page 6 and 7: o Y = 10" o Y = 10" oY=1 t Y = 10"
- Page 8 and 9: Figurc 13. Awiliary f,;ttction gt f
- Page 10 and 11: Vapor Depositron) proce tl ure, t h
- Page 12 and 13: [20.] I*i'oukov, VA., et al.,llenan
- Page 14 and 15: The end of this century, i.e., the
- Page 16 and 17: Tabie 3. Typical ISO viscosirt* gro
- Page 18 and 19: = (J ul U) LrJ t\a T T il t-i tl rl
- Page 20 and 21: and systens, and the numbet lf si:i
- Page 22 and 23: area of triboiogy of the real machi
- Page 24 and 25: UDK 621:192.6.N4 I O cc LU U) [! E
- Page 26 and 27: 3. TRIBOLOGIC,{L ENERGY LOSSES Tiib
- Page 28 and 29: \biurmno u s invr.:stigations cf ec
- Page 30 and 31: nn n T o E, lrJ (t) IU E YY P. BI}I
- Page 32 and 33: Distribution of these inclusions wa
- Page 34: Fig. 7. Detail of electroslag sutfa
YU |SSN 03s4 - 8996<br />
Iff<br />
I<br />
I<br />
voLUME 20<br />
NO4<br />
DECEMBER 1ee8.<br />
tribology <strong>in</strong> <strong>in</strong>dustry<br />
contents<br />
RESEARCH<br />
BOOI(S AND JOURNALS<br />
SCIENTIFIC MEETINGS<br />
S. SEfUltC: Tiibological Processes <strong>in</strong> The Cutt<strong>in</strong>g Zone<br />
.' t27<br />
A. RAC: Contemporary Lubricants: Role and Reqiurements I37<br />
S. TANASIJEVIC: Characteristics of Existence and Development<br />
of Mac<strong>in</strong>e Elements Tiibolory<br />
N{. BABIC: Tiibology and Enerry 748<br />
BLASXOVIC: Tiibological Behaviour of Surfac<strong>in</strong>g Layers for<br />
Cont<strong>in</strong>ual Cast<strong>in</strong>g Roils .<br />
I42<br />
t54<br />
159<br />
160<br />
REVIEW of research and expert papers published<br />
<strong>in</strong> journal<br />
"Tlibologr <strong>in</strong> <strong>in</strong>dustry" for peiiod 1989-<strong>1998</strong>.<br />
761
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