Metal Machining - Theory and Applications 2008 Part 5 ppsx

... removal. Naerheim and Trent (1977) have proposed that the wear rates of both WC-Co (K-grade) and WC-(Ti,Ta,W)C-Co (P-grade) cemented carbides are controlled by the rate of diffusion of tungsten (and Ti and ... and Inconel 718 0. 05 0.02 0.1 0.2 0 .5 1.0 2.0 5 10 20 40 60 80 99 85 Flank wear VB (mm) P10 Sintered steel P10 B1112 TiC-Al 2 O 3 ceramic Inconel 718 VB max B112 -...

Ngày tải lên: 12/08/2014, 02:22

... Obikawa, and Yasuo Yamane England and Japan September, 1999 viii Preface Childs Prelims 28:3:2000 4:07 pm Page viii 5. 4 Acoustic emission 155 References 157 6 Advances in mechanics 159 6.1 Introduction ... design 251 8 .5 Summary 262 References 262 9 Process selection, improvement and control 2 65 9.1 Introduction 2 65 9.2 Process models 267 9.3 Optimization of machining cond...

Ngày tải lên: 12/08/2014, 02:22

... mm 2 [ α n c fd] = 1 mm 2 [ α n c fd] = 0 .5 mm 2 V vol [mm 3 ] 960 2 950 00 2 950 00 f mach 0. 65 0. 65 0. 65 n c fd [mm 2 ]2 4 2 C [m/min] 180 150 180 n 0. 25 0. 25 0. 25 t ct [min] 5 5 5 t load [min] 2 2 2 M m [£/min] ... 15 15 15 Fig. 1.28 Times and costs to remove metal by milling, for the conditions i and ii of Table 1.7 compared with remov- ing the same metal by t...

Ngày tải lên: 12/08/2014, 02:22

... between the parts is a slip-line. Thus, in machining, the boundaries between the primary shear zone and the work and chip and between the secondary shear zone and the chip are slip-lines. Figure ... measured, Temperatures in machining 151 Fig. 5. 17 A detail of the hot junction and the associated measurement circuit Fig. 5. 18 Calibration test results for P10 carbide and a 0...

Ngày tải lên: 12/08/2014, 02:22

... 201 Childs Part 2 28:3:2000 3:14 pm Page 201 Kudo, H. (19 65) Some new slip-line solutions for two-dimensional steady-state machining. Int. J. Mech. Sci. 7, 43 55 . Lee, E. H. and Shaffer, B. W. (1 951 ) ... Sci. 14, 85 97. Shaw, M. C., Cook, N. H. and Smith, P. A. (1 952 ) The mechanics of three dimensional cutting oper- ations. Trans. ASME 74, 1 055 –1064. Shi, T. and Ramalingam, S...

Ngày tải lên: 12/08/2014, 02:22

... built-up-edge formation (Usui et al., 1981) and more recently in studies of low alloy semi free -machining steels (Childs and Maekawa, 1990). It is given further consideration in Section 7.3 and ... steel (the 0.36C-Cr-Mo-Ni material of Table A4.4). The Hopkinson bar equipment has established different laws for non-ferrous face centred cubic metals such as aluminium and a-brass. A mu...

Ngày tải lên: 12/08/2014, 02:22

... E., Smart, E. F. and Milner, D. (1970) The metallurgy of machining, Part 2. Metallurgia 81, 51 59 . Yamaguchi, K. and Kato, T. (1980) Friction reduction actions of inclusions in metal cutting. Trans ASME ... for design and control of machining processes: (a) CAD assisted milling process simu- lator and planner (Spence and Altintas, 1994) and (b) machining- scenario assist...

Ngày tải lên: 12/08/2014, 02:22

... detailed and reli- able recognition of cutting states in the future. 9 .5 Model-based systems for simulation and control of machining processes In this final section, the application of machining theory ... flank, notch and nose wear (VB, VN and VS) and operation variables to current forces. The levels of VB, VN and VS, V, f and d were the inputs and F d , F f and F c...

Ngày tải lên: 12/08/2014, 02:22

... 278–2 85. Kobayashi, S., Oh, S-I. and Altan, T. (1989) Metal Forming and the Finite Element Method. New York: Oxford University Press. Kudo, H. (19 65) Some new slip-line solutions for two-dimentional ... machining. Int. J. Mech. Sci. 7, 43 55 . Johnson, W. and Mellor, P. B. (1973) Engineering Plasticity. London: van Nostrand. Johnson, W., Sowerby, R. and Venter, R. D. (1982) Plan...

Ngày tải lên: 12/08/2014, 02:22

... 800 Iron and steel pure iron* 85 64 50 38 31 0.04–0.25C 52 –60 48 54 42– 45 35 37 29–30 0. 25 0.8C 51 52 46–48 39–42 33– 35 29–30 0.8–1.2C 45 51 42–46 37–39 32–33 27–29 low alloy 25 49 30– 45 32–40 30– 35 ... and steel pure iron, C, low alloy 3 .5 3.8 4.1–4.3 4.7 5. 0 5. 6 5. 9 6.7–7.1 ferritic stainless 3 .5 4.1 3.8–4.3 4.3 5. 0 6.0–7.1 5. 8–6.2 austenitic stainless 3 .5 4 .5...

Ngày tải lên: 12/08/2014, 02:22