A spherical casting of diameter 10 cm has a cylindrical riser 5 cm in diameterand 10 cm high. Predict with suitable explanation whether the riser can preventmacroporosity in the casting based on calculation applied to the riser design.Q2.(а)(Word limit: ~80)A manufacturer would like to produce carbonated beverage plastic bottle which(b)requires good precision and mechanical properties. Identify with supportedexplanation in terms of process characteristics which polymer processingmethod is suitable for this application.(Word limit: ~120)In solid state sintering of compacted metal powder material, discuss how the(c)progress of microstructure changes in sintering can be observed by microscopy.Support your discussion with suitable schematic diagram.(Word limit: ~100)

As per our guidelines we are supposed to do only first question if multiple question, kindly post…

(a) A spherical casting of diameter 10 cm has a cylindrical riser 5 cm in diameter and 10 cm high. Predict with suitable explanation whether the riser can prevent macroporosity in the casting based on calculation applied to the riser design. (Word limit: ~80)

(a) A spherical casting of diameter 10 cm has a cylindrical riser 5 cm in diameter and 10 cm high. Predict with suitable explanation whether the riser can prevent macroporosity in the casting based on calculation applied to the riser design. (Word limit: ~80)

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter9: Heat Transfer With Phase Change

Section: Chapter Questions

Problem 9.26P

See similar textbooks

Related questions

Q: A cylinder with a diameter of 40 mm and height of 80 mm solidifies in 3 minutes in a sand casting…

A: Given data: The diameter of the cylinder is d=40 mm The height of the cylinder is h=80 mm The…

Q: 2b) Figure 3 shows a cooling curve of Cadmium (Cd). Determine (i) the solidification temperature;…

A: As per company policy, we are restricted to solve only three sub-part of one question at a time.…

Q: (b) What are the factors that affecting the freezing rate during solidification of the molten metal…

A: Chvorinov's rule: According to this law, the freezing rate (solidification time) is a function…

Q: Explain in detail different components of a gating system in sand mold casting

A: The main components of the gating system in sand mold casting are described below:(1) Pouring…

Q: Design a closed cylindrical riser with ratio H / D = 2, to obtain the aluminum part shown in the…

A: Given: To find: Design a riser

Q: ical core of diameter 120 mm and height 180 mm is placed inside the mould cavity. The densities of…

Q: Q3. a) What the structural changes occurring during the annealing of stee casting? (Explain and…

A: Annealing is a heat treatment process that changes the physical and sometimes also the chemical…

Q: A riser in the shape of a sphere is to be designed for a sand casting mold. The casting is a…

Q: With a solidification factor of 0.97 x 10 s/m2, the solidification time (in seconds) for a spherical…

A: Given: Spherical castingd=200 mmr=100 mm or 0.1 m

Q: In the casting process, does the type of mold affect the nature of the microstructure, bearing in…

A: Yes it effect the microstructure of materials .

Q: Discuss the die casting process and specify the types

A: die casting is the metal casting process the working of the die casting is prepare a die by using…

Q: 2) Explain the reasons for shrinkage that occurs during solidification of a cylindrical casting What…

Q: Explain the working of principles of the die casting process which is most preferred of the high…

Q: H.W: determine solidification time of cylinder casting, assuming that the radius is 6 cm and its…

A: givenradius of cylinder r=6cmheight of the cylinder h=15cmconstant k=0.22sec/cm

Q: Q. Solidification patterns of steel, with different composition of carbon, in sand and metal molds…

A: Casting is a process in which liquid milten metal is poured into a cavity whose shape is same as…

Q: Imagine that you work in a foundry and are asked to calculate the solidification time of particular…

A: In the casting process, molten metal is poured into a mould and liquid metal fills up the cavities…

Q: ). Sand casting is one of the basic process in metal casting. Illustrate a schematic diagram of a…

Q: With a solidification factor of 0.97 × 10° s/m², the solidification time (in seconds) for a…

A: Given:Solidification factor, k=0.97×106 s/m2Diameter of sphere, D=200 mm or 0.2 mradius of sphere,…

Q: Which ingot has greater mechanical resistance? Why? Explain in detail what occurred during…

A: Given image : the image is showing two different ingot which shows the grain struture where one is…

Q: Copper alloy will cast by using mold have sphere shape attached with plate shape. The sphere shape…

Q: Q#3:(b)Explain in detail different components of a gating system in sand mold casting.

A: The gating system includes all those elements which connect the pouring ladle to the mould. The…

Q: A sphere with a diameter of 75 mm solidifies in three (3) minutes in a sand-casting operation. Using…

Q: Under uniform cooling, a spherical casting of 25 mm diameter undergoes volumetric solidification…

A: Given, Original diameter = d =25 mm Volumetric solidification shrinkage = Vs = 2.5 % = 0.025…

Q: (a) Which variables affect the total solidification time for casting process? Justify your answer…

A: Soln:- part (a) According to Chvorinov's principle Total solidification time directly propositional…

Q: The relation between dendrite arm spacing (X) and the solidification time (t) is given by X Al"

Q: Explain the function of a riser in sand mold casting process. Please sen me answer in detail in…

A: The riser is a part of the casting that is above the casting. Riser should be placed at appropriate…

Q: Two cubical castings of the same metal and sizes of 2 cm side and 4 cm side are moulded in green…

Q: 1- Explain why a casting may have to be subjected to various heat treatments. 2- Describe the…

A: Given questions are related to manufacturing engineering and material science. Why a casting may…

Q: With a solidification factor of 0.97 x 106 s/m2, the solidification time (in seconds) for a…

Q: Based on the data given in Question 7, what will be the total solidification time for a hemisphere…

A: Finding the value of 'n' and 'Cm'

Q: Please use phase diagram to explain why micro-segregation and macro-segregation happen during…

A: Solidification is basically a phenomenon that plays a great role in developing the diverse…

Q: Copper alloy will cast by using mold have sphere shape attached with plate shape. The sphere shape…

A: Data given - D = 5 cm = 0.05 m Solidification time = roll number × 10-5 Plate dimension = 0.3 cm…

Q: A disk-shaped part is cast out of aluminium with a diameter of 630 mm and a thickness of 16 mm. If…

Q: What is sand casting? Explain the steps in sand casting process with neat diagram and indicate all…

A: Sand casting is the casting process in which sand is used as the molding material. In sand casting…

Q: With a solidification factor of 0.97 x 106 s/m², the solidification time (in seconds) for a…

A: Given:d=200 mm,r=100 mm or 0.1 m

Q: A round casting is 0.2 m in diameter and 1 m in length. Another casting of the same metal is…

A: Givend=0.2 mr=0.22=0.1 mL=1mmajorminor=2=aba=2b

Q: What is pressure die casting? Explain the six major steps in pressure die casting process with neat…

A: Pressure Die-Casting: Pressure die casting is a quick, reliable and cost-effective manufacturing…

Q: Q3// Answer two only A) Within a cubic unit cell, sketch the following planes: (10 0J, (21 1) B)…

A: A).

Q: cm. The solidification time for this casting is 1. naual to 1 If the riser and ca

Q: (b) In a sand casting experiment that was performed using Aluminium alloy, it took 180 seconds for a…

Q: Question 1. For the casting part in two different geometries (one cube and a height/diameter ratio…

Q: Copper alloy will cast by using mold have sphere shape attached with plate shape. The sphere shape…

Q: en might low quantities be justified for the die-casting process?

A: casting : it is a manufacturing process in which the liquid metal/ material is poured into the mould…

Q: A jeweler wishes to produce 24 gold rings in one investment-casting operation, as illustrated in…

Concept explainers

Metal Casting

Metal casting is described as a manufacturing process in which a mold cavity is produced by sand, and molten metal is filled inside a mold cavity. The desirable shaped object is achieved after the solidification of molten metal. Large metal objects like machine beds, motor bodies, and others can easily be manufactured using metal casting. The place or shop where metal casting is performed is called foundry.

Question

A spherical casting of diameter 10 cm has a cylindrical riser 5 cm in diameter
and 10 cm high. Predict with suitable explanation whether the riser can prevent
macroporosity in the casting based on calculation applied to the riser design.
Q2.
(а)
(Word limit: ~80)
A manufacturer would like to produce carbonated beverage plastic bottle which
(b)
requires good precision and mechanical properties. Identify with supported
explanation in terms of process characteristics which polymer processing
method is suitable for this application.
(Word limit: ~120)
In solid state sintering of compacted metal powder material, discuss how the
(c)
progress of microstructure changes in sintering can be observed by microscopy.
Support your discussion with suitable schematic diagram.
(Word limit: ~100)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Caplets are used to support a sand core inside a sand mold cavity. The design of the caplets and the manner in which they are placed in the mold cavity surface allows each caplet to sustain a force of 45 N. Several caplets are located beneath the core to support it before pouring; and several other caplets are placed above the core to resist the buoyancy force during pouring. If the volume of the core = 5450 cm3, and the metal poured is steel, determine the minimum number of caplets that should be placed (a) beneath the core, and (b) above the core (Sand density = 1.6 g/cm3, steel density = 7.82 g/cm3).
A sand core is used to form the internal surfaces of a steel casting experiences a buoyancy force of 23kg .The volume of the mold cavity forming the outside surface of the casting is 5000 cm3 .Determine the weight of the final casting . Ignore consideration of shrinkage .Sand density =1.6g/cm3 ,steel casting density = 7.82 g/cm3
In his experiment to test whether the crown of the King of Syracuse was made of pure gold or not, Archimedes immersed the crown into a container filled with water. He noted that the crown displaced 150 mL of water. If the mass of the crown is 2675 g, is it made of pure gold? A storage tank that is 15 m high is open at the top and initially filled with water. It developed a hole 12 m below the surface of water along its side. (a) What is the initial speed of water through the hole? (b) How far from the base of the tank will the water stream strike the ground?
Discuss how you might measure the bulk modulus of a liquid.
hi, can you solve this ? A smooth circular hole at the bottom of a metal cylinder is 0.04 mm in diameter. Ethanol is filled into the cylinder until it drips from the hole. Since the surface tension of the ethanol wetting the metal at ambient temperature is 22.3 dyn / cm and its density is 0.789 g / cm3, what is the minimum height of the ethanol in the cylinder for dripping to begin?
CONCEPTUAL QUESTION - Hydrostatic Forces in Layered Fluids How do you get the centroid of the inclined shape like in the picture? Like for F1 = PcgA1, you obviously need the centroid and the area, so how do you get it if it's inclined? Can anyone give an example?
Consider a stack of six pancakes. Each pancake is made of 1/4 cup (approximately 60 mL) of batter, and the density of batter is 1 g/cm3. Consider the pancake at the bottom of the stack. What is the total weight of pancakes sitting on top of it? Express your answer in kilograms, but without entering the unit. This is not a lot of weight. Assuming that pancakes have an elastic modulus of 20 kPa, that the area of each pancake is identical (approximately 80 ), and that the stack of pancakes has a height of 55mm, compute how much the single pancake at the bottom of the stack is compressed by the weight of the pancakes on top of it. This is a very small compression, so instead you place a 4 kg weight on the pancakes. Now you see that the stack noticeably compresses. Consider the stack of pancakes as one aggregate unit with a surface area of approximately 80 cm2. What is the stress on the pancakes? Express your answer in Pascals, but without including the unit. Your observation of the normal…
Hi pls help me with the solutio. Of this problem exercise. The answer is already attached in bold. your will would be much appreciated
A 10tall by7 cm diameter cup is filled to the height of 5 cm with water and is fixed to the center of a plate. How fast can the plate be spun (rad/s) without losing water out of the cup?
in the discussion, stress/pressure is could be obtained by the formula force over area with the units Pa or atm. Despite being defined by the amount of force that is vector quantity, why is stress/pressure considered a scalar quantity?
SUPPOSE THE AMBIENT TEMPERATURE IS 20degrees CELSIUS, AND THE HOT RESERVOIR CONSISTS OF A SPHERICAL TANK WITH A RADIUS OF 4.00 m, THAT ACTS AS AN IDEAL EMITTER OF RADIATION. IF ALL THE RADIANT ENERGY EMITTED BY THE TANK COULD BE CAPTURED, WHAT IS THE AVERAGE AMOUNT OF WORK THAT COULD BE DONE EACH SECOND? ( please only answer if your 100% correct) (show work)
Consider a thin-walled, ﬁ xed-volume container of volume V that holds an ideal gas at constant temperature T. It can be shown by dimensional analysis that the number of particles striking the walls of the container per unit area per unit time is given by nv-/4, where as usual n is the particle number density. The container has a small hole of area A in its surface through which the gas can leak slowly. Assume that A is much less than the surface area of the container. (a) Assuming that the pressure inside the container is much greater than the outside pressure (so that no gas will leak from the outside back in), estimate the time it will take for the pressure inside to drop to half the initial value. Your answer should contain A, V, and the mean molecular speed v-. (b) Obtain a numerical result for a spherical container with a diameter of 40 cm containing air at 293 K, if there is a circular hole of diameter 1.0 mm in the surface.