Metal Machining - Theory and Applications Episode 1 Part 8 ppsx

... sintered steel and Inconel 7 18 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 B 111 2 TiC-Al 2 O 3 ceramic Inconel 7 18 VB max B 112 - P10, V = 200m/min, ... 0.1mm/rev Sintered steel - P10, V = 200m/min, d = 0.5mm, f = 0.1mm/rev Inconel 7 18 - Al 2 O 3 -TiC ceramic, V = 200m/min, d = 0.5mm, f = 0 .19 mm/rev Cumulative...

Ngày tải lên: 21/07/2014, 17:20

... h c Non-orthogonal (three-dimensional) machining 18 7 Childs Part 2 28: 3:2000 3 :13 pm Page 18 7 18 2 Advances in mechanics (b) (c) Fig. 6 .15 continued Childs Part 2 28: 3:2000 3 :13 pm Page 18 2 is ... 6.4 .8. Non-orthogonal (three-dimensional) machining 18 1 Fig. 6 .15 Uncut chip cross-sections in single point turning: (a) case 1, (b) case 2, (c) case 3 and (d) case 4 (...

Ngày tải lên: 21/07/2014, 17:20

... Smart, E. F. and Milner, D. (19 70) The metallurgy of machining, Part 1. Metallurgia 81 , 3 10 . 15 8 Experimental methods Childs Part 2 28: 3:2000 3 :11 pm Page 15 8 Over the exit boundaries BD and DA′, ... Emission 3, 10 8 11 6. Miwa, Y., Inasaki, I. and Yonetsu, S. (19 81 ) In-process detection of tool failure by acoustic emission signal. Trans JSME 47, 16 80 16 89...

Ngày tải lên: 21/07/2014, 17:20

... (min) 15 0 m min -1 15 0 m min -1 236 m min -1 Turning Milling 236 m min -1 Crater depth ( µm) Depth of cut :1. 0mm Feed rate: 0.2 mm rev -1 Flank wear (mm) Fig. 4 .8 Comparisons of wear when milling and ... carbon steel with a P10 cemented carbide tool, after Yamane and Narutaki (19 83 ) d :1. 0 mm, f: 0.2 mm tooth -1 Real cutting time: 1. 9 min 0. 01 0 .1 1...

Ngày tải lên: 21/07/2014, 17:20

... 400 20– 28 6–7.5 WC-Co* 4.5–6.0 550–650 75 12 0 50–75 WC-TiC-TaC-Co* 5 .8 6 .8 490–560 25–55 20–50 Co ≈ 12 ≈ 18 0 70 – * from Table 3.5. Childs Part 1 28: 3:2000 2:40 pm Page 11 1 200 to 10 00 MPa and a ... 3 .1 960–990 – PCD 10 0–550 2.0** 3 .8 4.2 620 84 0 14 0–540 PcBN 10 0* 1. 9–2 .1 4.7–4.9 680 – 710 15 0–340 K-carbide 75 12 0 3.0–3.4 4.5–6.0 550–650 390–925 P-carbide 2...

Ngày tải lên: 21/07/2014, 17:20

... Carbide CVD coated 0.2–0.5 3–7 1. 2 1. 9 2 .8 1. 8 Ground 0 .1 0.25 2–4 1. 2 1. 9 2 .8 1. 8 Super-finished 0.03 0.4 1. 2 1. 9 2 .8 1. 8 Childs Part 1 28: 3:2000 2: 38 pm Page 73 2.4.3 Wear in metal cutting Finally, ... Mech. 18 , 405– 413 . Mallock, A. ( 18 81 82 ) The action of cutting tools. Proc. Roy. Soc. Lond. 33, 12 7 13 9. Merchant, M. E. (19 45) Mechanics o...

Ngày tải lên: 21/07/2014, 17:20

... 2.2 k/ ρ C 11 0–220 85 14 0 50 16 0 12 0–200 220–320 ∆T 1 [°C] a 230–470 18 0–300 11 0–340 250–430 470– 680 K work [W/m K] 25–45 10 0–400 10 0–300 15 –20 6 15 K tool b [W/m K] 20–50 80 12 0 10 0–500 80 12 0 50 12 0 K* ... al. (19 72) Brass/carbide 30 48 0.3 450 0.9 0.95 Shirakashi and Usui (19 73) C steel/carbide 10 46 0.3 600 1. 3 0 .8 Shirakashi and Usui (19 73) Low a...

Ngày tải lên: 21/07/2014, 17:20

... ferrous and non-ferrous chips observed through a microscope at about five times magnification (Figure Fig. 2 .1 Early chip observations by (a) Tresca ( 18 78) and (b) Mallock ( 18 81 82 ) Childs Part 1 28: 3:2000 ... 2 .12 A range of possible rake face contact pressure distributions σ n / k , for α = 0º, φ = 10 º and λ = 35º and n = (a) 1/ 2, (b) 1/ 3 and (c) 1/ 6 Chi...

Ngày tải lên: 21/07/2014, 17:20

... 0.27 C t [£] 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 turning (- - -) Childs Part 1 28: 3:2000 ... 0 .85 ; n s = 2 n s = 2 n s = 2 n s = 3 Mechanical 1 kW 6000 0.0 28 Simple CNC 1 kW 20000 0.092 0.060 5 kW 280 00 0 .13 0. 086 15 kW 50000 0.23 0 .15 Tu...

Ngày tải lên: 21/07/2014, 17:20

... from Fig. 1. 1 International demand for machine tools, 19 78 88 , £bn at 19 85 prices (from European community statistics 19 88 ) and projected at that time to 19 95 Childs Part 1 28: 3:2000 2:32 pm Page 1 Contents Preface ... in machining 82 3.2 Tool materials 97 References 11 7 4 Tool damage 11 8 4 .1 Tool damage and its classification 11 8 4.2 Tool life 13 0 4...

Ngày tải lên: 21/07/2014, 17:20