Question
In: Mechanical Engineering
Question 3 a) In an Electrochemical Machining process, the feedstock is made of an aluminium alloy...
Question 3
a) In an Electrochemical Machining process, the feedstock is made of an aluminium alloy (Ultimate Tensile Strength = 572 MPa, Tensile Yield Strength = 503 MPa). The desired time to machine a hole (?=10 mm) through a 20 mm-thick part is 2.1 min at a feed rate of 0.18 mm/s. What are:
(i) the efficiency of the process in %, and
(ii) the current requirement in amps to achieve this machining time target?
b) Describe in detail the process of circular sawing with the aid of a freehand sketch. What are the two major mechanisms by which circular sawing is achieved and what materials are commonly used as circular saws of each type?
Solutions
samet mamat answered 2 years agoRelated Solutions
Question 3 a) In an Electrochemical Machining process, the feedstock is made of an aluminium alloy...
Question 3
a) In an Electrochemical Machining process, the feedstock is
made of an aluminium alloy (Ultimate Tensile Strength = 572 MPa,
Tensile Yield Strength = 503 MPa). The desired time to machine a
hole (?=10 mm) through a 20 mm-thick part is 2.1 min at a feed rate
of 0.18 mm/s. What are:
(i) the efficiency of the process in %, and
(ii) the current requirement in amps to achieve this machining
time target?
b) Describe in detail the...
Question 3 a)In an Electrochemical Machining process, the feedstock is made of an aluminium alloy (Ultimate...
Question 3 a)In an Electrochemical Machining process, the
feedstock is made of an aluminium alloy (Ultimate Tensile
Strength=572 MPa, Tensile Yield Strength=503 MPa). The desired time
to machine a hole (?=10 mm) through a 20 mm-thick part is 2.1 min
at a feed rate of 0.18 mm/s. What are: (i)the efficiency of the
process in %, and (ii)the current requirement in amps to achieve
this machining time target? [30 marks] Describe in detail the
process of circular sawing with the...
An alloy contains 97% by mass aluminium and 3% by mass copper. 8. Using 100 kg...
An alloy contains 97% by mass aluminium and 3% by mass
copper.
8. Using 100 kg of material as the starting point, what
proportion of the atoms are copper?
Consider an orthogonal machining process carried out on a steel alloy of 600 MPa shear strength,...
Consider an orthogonal machining process carried out on a steel
alloy of 600 MPa shear strength, the width of the cut is 10mm. The
depth of cut is 0.5 mm and the chip thickness 0.7mm. The cutting
speed is 2400 m/sec, the coefficient of friction is 0.364 and the
rake angle of the tool is 10 oC. Estimate : a) Material removal
rate b) specific power in shear c) specific power in friction
On the surface of a certain component made of aluminium with a modulus of elasticity of...
On the surface of a certain component made of aluminium with a
modulus of elasticity of 75 GPa and a Poisson’s ratio of 0.35, a
strain gauge rosette measures the following strains 0 = –94 × 10-6
60 = 370 × 10-6 120 = 235 × 10-6 The aluminium has a yield strength
of 95 MPa. a) Determine the strain components x, y, and xy from the
strain gauge measurements. b) Determine values for x, y and xy from
the...
A cast aluminium-silicon alloy containing 12 % silicon which cannot be age hardened would normally solidify...
A cast aluminium-silicon alloy containing 12 % silicon which
cannot be age hardened would normally solidify with a
hyper-eutectic structure. This alloy can be used for both
sandcasting and metal die-casting. Describe THREE methods in which
the cast metal can be strengthened by controlling the
microstructure during solidification.
Name the feedstock materials used in the manufacture of Portland cement. Describe the process of cement...
Name the feedstock materials used in the manufacture of
Portland cement. Describe the process of cement production using
these materials.
Explain the importance of water in the setting reaction for
cement and the reasons for selecting the correct water-cement ratio
in concrete. Discuss the problems that might occur when the
water-cement ratio is too low or too high.
Write down the chemical reaction between atmospheric carbon
dioxide and concrete and state what happens to the pH of concrete...
Explain unconventional machining process? b) why it applicable to small machining operations.
Explain unconventional machining process?
b) why it applicable to small machining operations.
Question 1 a) A cylindrical feedstock of length = 35.4 cm and diameter = 10 cm...
Question 1
a) A cylindrical feedstock of length = 35.4 cm and diameter = 10
cm is subjected to turning using a high speed steel tool. For this
tool, n and C values in the Taylor tool life equation are 0.125 and
70 m/min, respectively. The cost for hiring an operator and using
the machine tool are $82 per hour. The tooling cost per edge of
cutting is $5. Loading and unloading the part on to the machine
takes about...
1) Give 3 methods to determine machining time. 2) What is the difference between process optimisation...
1) Give 3 methods to determine machining time.
2) What is the difference between process optimisation and
economic.
3) From your understanding, would the costing calculation make
difference from one machining process to another.Why?
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