EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 23QLP
Describe the relative advantages and limitations of cold and hot isostatic pressing.
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لانقطة واحدة
of Warm working
The advantages
over cold working are: 1) forces and
power are higher,2) more intricate
work geometries possible, and 3)
need for annealing may be reduced
.or eliminated
T
F
Blow molding is an important
industrial process for making one-
piece hollow plastic parts with thick
.walls
T
Sly The sequence of the Blow Molding
is automated and often integrated
with downstream operations such
.as bottle filling and labeling
T
لنقطة واحدة
Describe the defects found on the injection/ compression moulded parts with different temperatures or time setting. Discuss the possible causes for each case.
Is compression molding a reversible process or irreversible process? Explain.
Chapter 17 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 17 - Describe briefly the production steps involved in...Ch. 17 - Name the various methods of powder production and...Ch. 17 - Explain why metal powders may be blended.Ch. 17 - Describe the methods used in metal powder...Ch. 17 - What is isostatic pressing? How is it different...Ch. 17 - What hazards are involved in PM processing?...Ch. 17 - Describe what occurs to metal powders during...Ch. 17 - Prob. 8RQCh. 17 - Why might secondary and finishing operations be...Ch. 17 - Prob. 10RQ
Ch. 17 - Prob. 11RQCh. 17 - Prob. 12RQCh. 17 - Prob. 13RQCh. 17 - What is screening of metal powders? Why is it...Ch. 17 - Why are protective atmospheres necessary in...Ch. 17 - Why is there density variation in the compacting...Ch. 17 - What is the magnitude of the stresses and forces...Ch. 17 - List the similarities and differences of forging...Ch. 17 - Give some reasons that powder-injection molding is...Ch. 17 - How does the equipment used for powder compaction...Ch. 17 - Explain why the mechanical and physical properties...Ch. 17 - What are the effects of the different shapes and...Ch. 17 - Describe the relative advantages and limitations...Ch. 17 - How different, if any, are the requirements for...Ch. 17 - The powder metallurgy process can be competitive...Ch. 17 - What are the reasons for the shapes of the shown...Ch. 17 - Should green compacts be brought up to the...Ch. 17 - Because they undergo special processing, metal...Ch. 17 - In Fig. 17.12, it can be seen that the pressure is...Ch. 17 - Why do the compacting pressure and the sintering...Ch. 17 - What will be stronger: a blend of stainless steel...Ch. 17 - Name the various methods of powder production and...Ch. 17 - Estimate the maximum tonnage required to compact a...Ch. 17 - Refer to Fig. 17.11a. What should be the volume of...Ch. 17 - Determine the shape factors for (a) a cylinder...Ch. 17 - Estimate the number of particles in a 500-g sample...Ch. 17 - Prob. 37QTPCh. 17 - A coarse copper powder is compacted in a...Ch. 17 - A gear is to be manufactured from iron powders. It...Ch. 17 - What volume of powder is needed to make the gear...Ch. 17 - The axisymmetric part shown in Fig. P17.41 is to...Ch. 17 - Prepare an illustration similar to Fig. 13.1,...Ch. 17 - Prob. 44SDPCh. 17 - Compare the design considerations for PM products...Ch. 17 - Prob. 46SDPCh. 17 - Prob. 47SDPCh. 17 - Using the Internet, locate suppliers of metal...Ch. 17 - Explain why powder metal parts are commonly used...Ch. 17 - Prob. 50SDPCh. 17 - Describe how the information given in Fig. 17.15...Ch. 17 - It was stated that, in the process shown in Fig....Ch. 17 - Prob. 53SDPCh. 17 - The axisymmetric parts shown in Fig. P17.54 are to...Ch. 17 - Assume you are working in technical sales. What...
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- Q. Discuss the following sentences: 1- A wide particle size distribution is preferred for dry pressing. 2- Products with high dimension accuracy are obtained in hot pressed technique.arrow_forwardA bearing of simple geometry is to be pressed out of bronze powders, using a compacting pressure of 240 MPa. Outside diameter of the bearing 45mm, inside diameter 20 mm, and length 18 mm. What is the required press tonnage to perform this operation? Whole number answer.arrow_forwardSingle-crystal technology is applied to nickel alloys that are used as gas turbine blades in aerospace engines. With the aid of sketches describe how a single-crystal casting can be manufactured and explain why a single-crystal casting is likely to have superior creep resistance than a directly-solidified one. Demonstrate the application of the Ten-percent Rule by calculating the approximate tensile strength and elastic modulus in the 0° direction of a carbon-fibre reinforced polymer composite if the strength and elastic modulus in the 0' single ply are 3620 MPa and 143 GPa respectively. The lay-up sequence of the composite is [0,/+45/-45/90-],.arrow_forward
- A thin steel disk of an oil separator of 100mm outside diameter is shrunk onto a solid steel shaft of 20mm diameter. The system is to be designed to make sure the disc does not become loose at speeds lower than 100000rev/min. Determine the shrinkage allowance required in order to avoid separation disc and shaft, at a speed of 100000rev/min. For the material assume a Young's Modulus, Poisson Ratio and density of 210GPa, 0.3 and 7850kg/m³ respectively.arrow_forwardFor simplified processing calculations, glass-bottle shaping temperature can be taken as the softening point (at which n = 107.6 P ), and the subsequent annealing temperature can be taken as the annealing point (at which n = 1013.4 P ). If the glass-bottle processing sequence involves a shaping temperature of 690 °C for a glass with an activation energy for viscous deformation of 440 kJ/mol , calculate the appropriate annealing temperature. Express your answer to three significant digits.arrow_forward4. A steel rotor of a gas turbine of 400mm outside diameter, 150mm inside diameter and 25mm thick is shrunk onto a solid steel shaft. At its service speed of 3000rev/min the radial stress on the outside of the rotor is 1.45MPA. Determine the shrinkage allowance required in order to avoid failure, if the design stress limit of the material is 200MPA. For the material assume a Young's Modulus, Poisson Ratio and density of 210GPA, 0.3 and 7850k g/m3 respectively.arrow_forward
- Please provide Handwritten answerarrow_forwardWhich of the following processes are the plastic forming methods used in the shaping of traditional ceramics (three correct answers): Odry pressing O extrusion O jangling O jiggering O jolleying Oslip casting O spinningarrow_forwardExplain the extrusion blow molding in detail.arrow_forward
- GKN Sinter Metals Company pressed iron powders using a compaction pressure of 600 MPa to produced a cylindrical bearing which is 70 cm long and has internal and external diameters of 8 cm and 16 cm, respectively. Determine (a) the most appropriate pressing direction, (b) the required press tonnage to perform this operation, and (c) the final weight of the part if the porosity is 12%, given that the density of iron, ρ = 7.87 g/cm3. Assume shrinkage during sintering can be neglectedarrow_forwardWhat is the Forging process? Explain the process including two forged products.arrow_forwardWhat are the critical differences between work hardening and geometric hardening?arrow_forward
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