Metal Machining Episode 11 pptx

... 10 Aluminium 5 .11 21 4.89 17.1 Brass 3.67 42.9 3.89 46.7 Copper 5.89 70 5 .11 61 Stainless steel 6 .11 64.8 7.33 79 Cost/kg Cost/m 3 Cost/kg Cost/m 3 Economics of process planning 415 The ... 430 Process Planning Machining processes Machining is already specified for the Q100 mm and O50 mm bores and it is a case of consulting the process selection tables to determine...

Ngày tải lên: 12/08/2014, 16:21

... Smart Syst. II, Pittsburgh, 19 87, Vol. 459, pp. 11 9 13 0. 11 4. D. Vokoun and R. Stalmans, SPIE 3667: 825–835 (19 99). 11 5. Y. Zheng, L. Cui, D. Zhu, and D. Yang, Mater. Lett. 43: 91 96 (2000). 11 6. ... 43: 91 96 (2000). 11 6. M. Piao, K. Otsuka, S. Miyazaki, and H. Horikawa, Mat. Trans. JIM 14 : 919 –929 (19 93). 11 7. R .M. Banks and M.C. Fleming, J. Phys. Col...

Ngày tải lên: 13/08/2014, 05:20

... equation for the error in step n, which will be written as  n = y(x n ) −y n ,intheform  n − k  i=1 α i  n−i = Kh p+1 , 362 NUMERICAL METHODS FOR ORDINARY DIFFERENTIAL EQUATIONS For U ∈ R kN ,writeU i , ... y n ). (452c) 350 NUMERICAL METHODS FOR ORDINARY DIFFERENTIAL EQUATIONS 1 2 3 1 2 i −i −2 −1 0 Figure 434(i) Stability regions for Adams–Moulton methods...

Ngày tải lên: 13/08/2014, 05:21

... a detailed analyses of the noise and noise control of ducted ventilation systems. b. Noise reduction from fan housing. The fan housing and its nearby connected ductwork radiate fan noise into the fan ... octave bands containing the impeller C-12. Fans. blade passage frequency and its first harmonic. These would usually fall in the 1,000 and 2,000 Hz octave bands. The data of...

Ngày tải lên: 13/08/2014, 05:22

... quantity calculation, 20–21 Zinc anodes, 20 Index 95 ch002.qxd 31/7/00 1:51 pm Page 95 92 Guide to Ship Repair Estimates (in Man-hours) % Time 100 90 80 70 60 50 40 30 20 10 0 Marine welder/burner % ... cable, un-armoured, multi-core, 75, 76 Electric cables, 75–79 Electric generators, 73 Electric motors, 71 Electric motors, crane, 72, 73 ch002.qxd 31/7/00 1:51 pm Page 93 ... calcu...

Ngày tải lên: 13/08/2014, 09:20

... affect machinery life in unknown or unquantifiable ways. 450 Improving Machinery Reliability Figure 11- 10. Downstream piping details. Figure 11- 11. Pump bearing housing. 458 Improving Machinery ... Operating Expenses,” Turbomachinery International, JulyIAugust 1989, pp. 34 ,35 ,46. 11. Bloch, H. P. and Geitner, F. K., Practical Machinery Management for Process...

Ngày tải lên: 13/08/2014, 09:20

... 500–700 ρ C [MJ/m 3 ] ≈ 3. 5 ≈ 3. 5 ≈ 2.5 ≈ 4.0 ≈ 2.2 k/ ρ C 110–220 85–140 50–160 120–200 220 32 0 ∆T 1 [°C] a 230 –470 180 30 0 110 34 0 250– 430 470–680 K work [W/m K] 25–45 100–400 100 30 0 15–20 6–15 K tool b [W/m ... E. (19 73) Friction characteristics on tool face in metal machining. J. JSPE 39 , 966–972. Taylor, F. W. (1907) On the art of cutting metals. Trans. ASME 28, 31 3...

Ngày tải lên: 13/08/2014, 09:20

... 2.0** 3.8 4. 2 620– 840 140 – 540 PcBN ≈100* 1.9–2.1 4. 7 4. 9 680–710 150– 340 K-carbide 75–120 3.0–3 .4 4.5–6.0 550–650 390–925 P-carbide 25–55 4. 0 4. 1 5.8–6.8 49 0–560 390– 840 Cermet 11–35 2 .4 2.7 6.7–7.8 ... 6.7–7.8 390 42 0 48 0– 740 Al 2 O 3 10–35 3.2–3.6 7.9–8.0 380–390 145 –330 Al 2 O 3 /TiC 10–22 3.8 4. 0 7.6–8.0 370–395 180–330 Al 2 O 3 /SiC(wh.) 10–35 ≈3 .4* 7.0–7.5 34...

Ngày tải lên: 13/08/2014, 09:20

... 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 - P10, V = 200m/min, d = 0.5mm, f = 0.1mm/rev Sintered ... chamfers for a length T between 0.5f and 0.75f for turning operations and 1.2f to 1.5f for milling; with a c from 15 to 30˚ depending on the severity of the machini...

Ngày tải lên: 13/08/2014, 09:20

... 1991), to give an insight into how machining may be changed by non-planar rake face and cutting edge modified tools. Figures 6. 6 and 6. 7 give examples. Figure 6. 6 is concerned with modifications ... equation (6. 9a) to the work-hardening behaviour of the material, expressed as s — = s 0 e — n (6. 10) and to the shear strain-rate on OA″, from equation (6. 6), in order to replace equat...

Ngày tải lên: 13/08/2014, 09:20

... al., 1 978 ; Usui and Hirota, 1 978 ; Arsecularatne et al., 1995). This section introduces the further Non-orthogonal (three-dimensional) machining 177 Childs Part 2 28:3:2000 3:12 pm Page 177 where ... single-point cutting tools. Trans. ASME 76 , 199–204. Dewhurst, P. (1 978 ) On the non-uniqueness of the machining process. Proc. Roy. Soc. Lond. A360, 5 87 610. Dewhurst, P. (1 979 )...

Ngày tải lên: 13/08/2014, 09:20

... conditions as Figure 7.14 Childs Part 2 28: 3:2000 3:15 pm Page 217 2 28 Applications of finite element analysis Fig. 8. 1 continued Childs Part 2 28: 3:2000 3:16 pm Page 2 28 generate the nucleus of a BUE. ... methods were being developed for metal machining, linear fracture mechanics methods were being developed for the machining of brittle ceramics (Ueda and Sugita, 1 983 ). The 1...

Ngày tải lên: 13/08/2014, 09:20

... (2.24d) V=100 m/min V=200 m/min m à n* m à n* Steel P 1.0 2.31 3. 89 1.0 2.48 3.22 Steel X 0 .99 1.25 3.05 0 .96 1.43 2.06 Steel Y 0 .97 0.76 5 .98 0 .99 1.04 3.04 Steel L 0.74 0.38 8.78 0.88 0.72 4.21 Childs ... Luttervelt, 199 3). Section 8.4.1 describes a two-dimensional (orthogonal) finite element simulation of chip breaking when machining with grooved rake face tools (Shinozuka et al....

Ngày tải lên: 13/08/2014, 09:20

... (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 J. Eng. Ind. 103 , 221–228. Yamane, ... (1998) Modeling the physics of metal cutting in high speed machining. Int. J. Machining Sci. and Tech. 2, 343–353. Shaw, M. C., Usui, E. and Smith, P. A. (1961) Free machinin...

Ngày tải lên: 13/08/2014, 09:20

... up-milling, centring and splitting. The machining scenario is used to control cutting force and machining error by pre -machining feed adjustment, and to diagnose machining states. Figure 9.37 (from ... 1450 rpm) (2.6) power efficiency: (95%) (3) Machining plan (3.1) machining (3.1.1) turning: {general turning, contouring, tapering, grooving, . . .} (3.2) machining type: {heavy r...

Ngày tải lên: 13/08/2014, 09:20