Question
In: Mechanical Engineering
In a manufacturing process, stainless steel cylinders (AISI 304) initially at 600K are quenched by submersion...
In a manufacturing process, stainless steel cylinders (AISI 304) initially at 600K are quenched by submersion in an oil bath maintained at 300K with h=500W/m2-K. Each cylinder is of length 2L=60 mm and diameter D=80mm. Consider a time 3 min into the cooling process and determine the temperatures at the center of the cylinder, at the center of the circular face and at the mid height of the site. (Use the Heisler charts to answer these questions). You may evaluate properties at the mean temperature of Tm=450K.
Solutions
samet mamat answered 1 year agoRelated Solutions
A stainless-steel rod (AISI 304) of length ? = 100[??] and triangular cross-section is attached between...
A stainless-steel rod (AISI 304) of length ? = 100[??] and
triangular cross-section is attached between two isothermal heat
sinks at ?0 = 50℃. The rod perimeter is ? = 5[??]. When an unknown
fluid at ?0 = 23℃ is in cross-flow over the rod, the temperature of
the rod is midway between its two ends is measured to be ???? =
25℃. Determine the value of the convection heat transfer
coefficient and the rate of heat loss from the...
As part of a heat treatment process, cylindrical, 304 stainless steel rods of 100-mm diameter are...
As part of a heat treatment process, cylindrical, 304 stainless
steel rods of 100-mm diameter are cooled from an initial
temperature of 500ºC by suspending them in an oil bath at 25ºC. If
a convection coefficient of 500 W/m2·K is maintained by
circulation of the oil, how long does it take for the centerline of
a rod to reach a temperature of 52ºC, at which point it is
withdrawn from the bath? If 9 rods of length 1 m are...
As part of a heat treatment process, cylindrical, 304 stainless steel rods of 100 mm diameter...
As part of a heat treatment process, cylindrical, 304 stainless
steel rods of 100 mm diameter are cooled from an initial
temperature of 500°C by suspending them in an oil bath at 30°C. If
a convection coefficient of 500 W/m2K is maintained by circulation
of the oil, how long does it take for the centerline of a rod to
reach a temperature of 50°C, at which point it is withdrawn from
the bath? If 10 rods of length L =...
A stainless steel (AISI 316) tube used to transport a chilled pharmaceutical has an inner diameter...
A stainless steel (AISI 316) tube used to transport a
chilled pharmaceutical has an inner diameter of 30 mm and a wall
thickness of 3 mm. The pharmaceutical and ambient air are at
temperatures of 6oC and 23oC, respectively, while the corresponding
inner and outer convection coefficients are 400 W/m2 K and 6 W/m2
K, respectively.
(a) What is the heat gain per unit tube length?
(b) What is the heat gain per unit length if a 10-mm thick layer...
1.For a manufacturing application, a hollow stainless steel cylinder is to be produced into which another...
1.For a manufacturing application, a hollow stainless steel
cylinder is to be produced into which another cylinder is to slide
into. For example, this might be a piston in a car engine. Suppose
the outer cylinder diameter is normally distributed with mean 25 mm
and standard deviation 1.5 mm, and the inner cylinder diameter is
normally distributed with mean 24.5 mm and standard deviation 0.5
mm. Find the
1) mean of the difference of the outer cylinder diameter minus
the...
A new production process is being contemplated for the manufacture of stainless steel bearings. Measurements of...
A new production process is being contemplated for the
manufacture of stainless steel bearings. Measurements of the
diameters of random samples of bearings from the old and new
processes produced the following data (all in mm): Old
Old
New
16.3
15.9
15.9
16.2
15.8
16.0
16.2
15.8
16.1
16.1
16.0
16.1
15.7
15.8
15.8
16.0
15.9
16.2
16.1
15.9
16.3
15.7
16.1
16.2
15.8
15.8
15.7
15.8
15.8
16.2
15.7
16.3
.
A. Can you conclude that the variances between...
Please watch integrated tube production process from SANDVIK, a global manufacturer of stainless steel and alloy...
Please watch integrated tube production process from SANDVIK, a
global manufacturer of stainless steel and alloy steels products on
https://goo.gl/tjQzsP. a. Please identify the step by step
processes to make steel tube product. b. Please explain the purpose
of each of the process. c. Investigate the current step by step
processes to make the steel tube and suggest any idea for
improvement as detail as possible. Improvement can be in the forms
of reduction on production time, reduction on defect...
4) Fab Manufacturing Corporation manufactures and sells stainless steel coffee mugs. Expected mug sales at Fab...
4) Fab Manufacturing Corporation manufactures and sells stainless steel coffee mugs. Expected mug sales at Fab (in units) for the next three months are as follows:Fab likes to maintain a finished goods inventory equal to 30% of the next month's estimated sales. How many mugs should Fab plan on producing during the month of November?
23,200 mugs
26,800 mugs
25,900 mugs
34,300 mugs
Question Set 3. A small manufacturing plant produces specialized stainless steel valves for high-pressure steam systems....
Question Set 3. A small manufacturing plant
produces specialized stainless steel valves for high-pressure steam
systems. Each valve costs $2000 to produce. The plant incurs
$1,200,000 in fixed annual costs. The plant sells the valves
directly to power plants for $6400 each. For this question set, use
the following formulas:
[Total Profit] = [Total Revenue] – [Total Cost]
[Total Revenue] = [Production] x [Unit Revenue]
[Total Cost] = [Production] x [Variable Unit Cost] + [Fixed
Costs]
1. Create a data...
a) During the manufacturing process of rail steel, chemicals may be naturally found in or added...
a) During the manufacturing process of
rail steel, chemicals may be naturally found in or added to the
steel.
For each of the following chemicals,
describe where it comes from in the manufacturing process and the
effect that it has on the rail steel:
(i) carbon
(ii) silicon;
(iii) sulphur;
(iv) manganese;
(v) hydrogen
(vi) boron and molybdenum
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