The following data were collected during tool life tests in turning: (1) when v 100 m/min,...
Turning tests have resulted in 5-min tool life at cutting speed=160 m/min and a 41-min tool life at speed=100 m/min. a) If you want the tool life to be at least 20 mins. What is the maximum cutting speed you can use? b) The outside diameter of a cylinder made of titanium alloy is to be turned. The starting diameter is 200 mm and the length is 800 mm. The feed is 0.2 mm/rev and the depth of cut is...
Flank wear data were collected in a series of turming tests using a coated carbide tool on hardened alloy steel at a feed of 0.3 mm/rev and a depth of 3.6 mm. At a speed of 120 m/min, flank wear 0.12 mm at 1 min, 0.27 mm at 5 min, 0.5 mm at 10 min, 0.58 mm at 15 min, 0.73 at 20 min, and 0.97 mm at 25 min. At a speed of 160 m/min, flank wear 0.2 mm...
a) A workpiece (φ-75 mm, 1 275 mm) is machined using turning at a feed rate of 0.25 mm/rev. At a cutting speed- 3.5 m/s, the turning tool is ineffective after machining 3 parts, and at a cutting speed = 2.5 m/s, the turning tool is effective for producing 20 parts. Calculate the Cutting Speed that will allow 30 parts to be machined between tool changes [20 marks] b) An aluminium alloy workpiece (tensile strength - 325 N/mm2 and yield...
During a turning operation on a lathe using a grooved tool, the following forces were recorded: Group 1 2 3 4 5 6 Feed force, Fx (kN) 1.70 1.68 1.59 1.75 1.67 1.64 Radial force, Fy (kN) 1.32 1.39 1.44 1.42 1.45 1.38 Tangential force, Fz (kN) 2.18 2.37 2.38 2.32 2.29 2.33 The machine set-up includes a feed (s) of 0.24 mm/rev. and the depth of cut (d) of 2.5 mm. Tool rake angle () = - 6 deg....
the following concentration-time data were collected: Time (min)(min) [X](M)[X](M) 0 0.467 1 0.267 2 0.187 3 0.144 4 0.117 5 0.099 6 0.085 7 0.075 Given that the rate constant for the decomposition of hypothetical compound XX from part A is 1.60 M−1⋅min−1M−1⋅min−1, calculate the concentration of XX after 15.0 minmin . Express your answer with the appropriate units.
The accompanying data in the table below were derived from life tests for two different brands of cutting tools. Complete parts a through c. Click the icon to view the data table of cutting speed and useful life. Cutting Speed (meters per minute) Useful Life Brand A (Hours) Useful Life Brand B (Hours) 30 5.5 6.3 30 4.2 6.3 30 5.4 4.6 40 5.2 6.5 40 4.5 4.6 40 2.5 5.0 50 4.4 4.5 50 2.8 4.0 50 1.0 3.7...
Chapter 15: 1. Shear plane angle and shear strain: In an orthogonal cutting operation, the tool has a rake angle = 16°. The chip thickness before the cut = 0.32 mm and the cut yields a deformed chip thickness = 0.72 mm. Calculate (a) the shear plane angle and (b) the shear strain for the operation. 2. Shear strength: The cutting force and thrust force have been measured in an orthogonal cutting operation to be 301 lb and 291 lb,...
For the reaction A⟶products, concentration and time data were collected. Enter these data into the graphing tool and determine the value and units of the rate constant, k, for this reaction. t (min) [A] (M) 0.0 1.00 1.0 0.66 2.0 0.43 3.0 0.28 Graphing Tool A graphing tool to enter and plot kinetics data. A table with 4 columns labeled t, [A], ln[A], and 1/[A]. A graph with options to plot [A] vs. t, ln[A] vs. t, or 1/[A] vs....
The following data were recorded for the enzyme-catalyzed reaction. Substrate concentration (M) 6.25 x 100 7.50 x 10 1.00 x 10-4 1.00 x 10-3 Reaction velocity (nM/min) 15 56 60 75 (1) Estimate Km and Vmax- (2) What would V be at S=2.5 x 10-5 ?
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values in Table 20.2, determine material removal rate and cutting power in the operation under the following sets of cutting conditions: (a) Cutting speed 5.6 m/s, feed 0.25 mm/rev, and depth of cut 2.0 mm; and (b) cutting speed- 1.3 m/s, feed 0.75 mm/rev, and depth 4.0 mm. Question 2 Consider a turning operation performed on steel whose hardness 225 HB at a cutting speed...