Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 14, Problem 25QLP
Comment on your observations regarding the grain-flow pattern in Fig. 14.13b.
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Chapter 14 Solutions
Manufacturing Engineering & Technology
Ch. 14 - What is the difference between cold, warm, and hot...Ch. 14 - Explain the difference between open-die and...Ch. 14 - Explain the difference between fullering, edging,...Ch. 14 - What is flash? What is its function?Ch. 14 - Why is the intermediate shape of a part important...Ch. 14 - Describe the features of a typical forging die.Ch. 14 - Explain what is meant by load limited, energy...Ch. 14 - What type of parts can be produced by rotary...Ch. 14 - Why is hubbing an attractive alternative to...Ch. 14 - What is the difference between piercing and...
Ch. 14 - What is a hammer? What are the different kinds of...Ch. 14 - Why is there barreling in upsetting?Ch. 14 - What are the advantages and disadvantages of...Ch. 14 - Why are draft angles required in forging dies?Ch. 14 - Is a mandrel needed in swaging?Ch. 14 - Describe and explain the factors that influence...Ch. 14 - How can you tell whether a certain part is forged...Ch. 14 - Identify casting design rules, described in...Ch. 14 - Describe the factors involved in precision...Ch. 14 - Why is control of the volume of the blank...Ch. 14 - Why are there so many types of forging machines...Ch. 14 - What are the advantages and limitations of cogging...Ch. 14 - What are the advantages and limitations of using...Ch. 14 - Review Fig. 14.6e and explain why internal draft...Ch. 14 - Comment on your observations regarding the...Ch. 14 - Describe your observations concerning the control...Ch. 14 - Prob. 27QLPCh. 14 - Describe the difficulties involved in defining the...Ch. 14 - Describe the advantages of servo presses for...Ch. 14 - List the general recommendations you would make...Ch. 14 - Which would you recommend, (a) hot forging and...Ch. 14 - Take two solid, cylindrical specimens of equal...Ch. 14 - Calculate the room-temperature forging force for a...Ch. 14 - Using Eq. (14.2), estimate the forging force for...Ch. 14 - To what thickness can a solid cylinder of 1020...Ch. 14 - In Example 14.1, calculate the forging force,...Ch. 14 - Using Eq. (14.1), make a plot of the forging...Ch. 14 - How would you go about estimating the punch force...Ch. 14 - A mechanical press is powered by a 30-hp motor and...Ch. 14 - A solid cylindrical specimen, made of a perfectly...Ch. 14 - Devise an experimental method whereby you can...Ch. 14 - Assume that you represent the forging industry and...Ch. 14 - Figure P14.44 shows a round impression-die forging...Ch. 14 - Prob. 45SDPCh. 14 - Prob. 46SDPCh. 14 - Review the sequence of operations in the...Ch. 14 - Prob. 48SDPCh. 14 - Discuss the possible environmental concerns...Ch. 14 - List the advantages and disadvantages in using a...
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- In 2018, 25% of produced flat glass were recycled back as a raw material in the production of flat glass as it yielded sustainable impacts such as the reduction of energy requirement to heat up the furnace since the mixture will melt easily. In your opinion, can other types of glass wastes (eg. tempered glass, glass bottles, etc) be used as a raw material in the production of flat glass. Justify your answer by providing references.arrow_forwardTranslate the given information in your words, figures given below. Time-temperature cooling curve for the solidification of a small crucible of 50 percent antimony, 50% bismuth alloy.arrow_forwardDiscuss under what circumstances martensite is formed and highlight its effect on mechanical properties.arrow_forward
- Please include the diagram in your solution.arrow_forwardPlease explain each step clearly and in detail.arrow_forwardUnder uniform cooling, a spherical casting of 25 mm diameter undergoes volumetric solidification shrinkage and volumetric solid contraction of 2.5% and 6.2%, respectively. Determine the diameter of the casting after solidification.arrow_forward
- In casting experiments performed during a certain alloy and type of sand mould it took 155 second for a cube shaped casting to solidify. The cube was 50 mm on a side. (i) Determine the value of the mould constant in Chvorinov's Rule. (ii) If the same alloy and mould type were used, find the total solidification time for cylindrical casting in which the diameter D = 30 mm and length L = 50 mm. %3Darrow_forwardEnumerate and explain each briefly the FOUR (4) Properties of the Bernoulli Process.arrow_forward(a) For the solidification of iron, calculate the critical radius r* and the activation free energy ΔG* if nucleation is homogeneous. Values for the latent heat of fusion and surface free energy are –1.85 × 109 J/m3 and 0.204 J/m2, respectively. Use the supercooling value ΔT = 286 K, and the melting point of iron is 1538°C. (Critical radius, r* in nm and Activation Free Energy ΔG* in J) (b) Now calculate the number of atoms found in a nucleus of critical size. Assume a lattice parameter of 0.292 nm for solid iron at its melting temperature. (Number of Atoms for Critical Size in atoms/critical nuclues)arrow_forward
- Explain how grain boundaries are formed upon solidification of metals.arrow_forwardQ1/ In a homogeneous solidification process, assume molten metal solidifies into a spherical nucleus with a BCC structure. The given data are; lattice parameter (0.292 nm), the heat of fusion energy (1.85×10-9 J/m³), latent surface free energy (0.204 J/m²), critical radius (1-35 nm), equilibrium melting temperature (1516 K), and room temperature (27 °C). Calculate the following for this metal; (a) supercooling value temperature (b) activation tree energy (c) number of atoms in a nucleus of critical size.arrow_forwardA slab of 1500 mm x 750 mm x 500 mm is required to be cast using a sand casting process. It was observed previously that the total solidification time (T) for this casting = 1.6 min. Find out the cylindrical riser dimensions (diameter to height ratio = 1) for a solidification time T = 5 min.arrow_forward
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Explanation of Solidification of Metals & Alloys | Manufacturing Processes; Author: Magic Marks;https://www.youtube.com/watch?v=G5z9KknF_s8;License: Standard Youtube License