Metal Machining - Theory and Applications Episode 1 Part 5 potx
Metal Machining - Theory and Applications Episode 1 Part 5 potx
... 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, ... chip flow and tool wear.
Wear 13 9, 2 35 250 .
Childs, T. H. C., Richings, D and Wilcox, A. B. (19 72) Metal cutting: mechanics, surface physics
and meta...
Metal Machining - Theory and Applications Episode 1 Part 10 ppt
... 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
(a)
Childs Part 2 28:3:2000 3 :12 ... r
n
d
θθ
2
θ
4
A
θ
t
1e,
θ
3–4
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⎛
⎜
⎝
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⎟
⎠
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⎟
⎠
⎛
⎜
⎝
⎛
⎜
⎝
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⎠
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Childs Part 2 28:3:2000 3 :13 pm Page 19 2
Non-orthogonal (three-dimensio...
Metal Machining - Theory and Applications Episode 1 Part 9 pptx
... 47 (1) , 41 44.
Williams, J. E, 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 ... (Reichenbach, 19 58 ), on the tool flank
Temperatures in machining 15 3
Fig. 5. 20 Radiation from a black body
Childs Part 2 28:3:2000 3 :11 pm Page 15 3
(Chao et al.,...
Metal Machining - Theory and Applications Episode 1 Part 8 ppsx
... 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
B 111 2
TiC-Al
2
O
3
ceramic
Inconel 718
VB
max
B 112 - P10, V = 200m/min, d = 0.5mm, ... measured,
Temperatures in machining 15 1
Fig. 5 .17 A detail of the hot junction and the associated measurement circuit
Fig. 5 .18 Calibration test results for P1...
Metal Machining - Theory and Applications Episode 1 Part 7 ppt
... turning a 0. 45% 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
2
5
10
20
2
5
10
20
50
10 0
Oxygen ... (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
Fla...
Metal Machining - Theory and Applications Episode 1 Part 6 pdf
... 2.0 3 .1 960–990 –
PCD 10 0 55 0 2.0** 3.8–4.2 620–840 14 0 54 0
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 55 0– 650 390–9 25
P-carbide 25 55 4.0–4 .1 5. 8–6.8 490 56 0 390–840
Cermet ... [10
–6
K
1
] modulus [GPa] 10 0°C 10 00°C
TiC 7.4–7.7 ≈ 450 24–33 38– 41
TiN 9.4 ≈ 250 19 – 21 25 26
Al
2
O
3
8.4–9.0 ≈ 400 20–28 6–7 .5
WC-Co* 4 .5...
Metal Machining - Theory and Applications Episode 1 Part 4 pot
... [MJ/m
3
] ≈ 3 .5 ≈ 3 .5 ≈ 2 .5 ≈ 4.0 ≈ 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 ... 6 15
K
tool
b
[W/m K] 20 50 80 12 0 10 0 50 0 80 12 0 50 12 0
K* 0 .5 2 0.2 1 0.3 5 4–8 3–20
a
∆T
1
for
γ
≈ 2 .5 and
β
= 0. 85;
b
tool grades appropr...
Metal Machining - Theory and Applications Episode 1 Part 3 pot
... data.
52 Chip formation fundamentals
Fig. 2 .12 A range of possible rake face contact pressure distributions
σ
n
/
k
, for
α
= 0º,
φ
= 10 º and
λ
= 35 and
n
=
(a) 1/ 2, (b) 1/ 3 and (c) 1/ 6
Childs ... in air and CCl
4
atmos-
pheres at cutting speeds from 1 to 10 0 m/min, at feeds between 0 .1 and 0. 25 mm and with
cutting tools of rake angle 6˚ to 40˚. At the high...
Metal Machining - Theory and Applications Episode 1 Part 2 pps
... lathe; 1 min
12 x 12 x 4 3.00–6.00 1. 10 1. 90 for insert tooling on turning
25 x 25 x 7 9.00 11 .20 2. 65 3.20 centre
ceramic insert, plain
12 x 12 x 4 4 .50 –9.00 1. 50 –2.70
25 x 25 x 7 13 .50 17 .00 ... 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...
Metal Machining - Theory and Applications Episode 1 Part 1 potx
... 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
4.3 Summary 13 4
References 13 5
5 Experimental methods 13 6
5 .1 ... Page v
5. 4 Acoustic emission 15 5
References 15 7
6 Advances in mechanics 15 9
6 .1 Introduction 15 9
6.2 Slip-line field modelling 15 9
6.3 Introducing variable...