Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 10, Problem 24QLP
Review Fig. 10.8 and make a summary, explaining the purpose of each feature shown and the consequences of omitting the feature from the mold design.
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For the casting of the part, whose perspective pictures are given below, take into account the surface of the section, the model design, if necessary, the core design, all the molding stages and finally the mold in the most suitable form for casting, and name all the mold elements by showing them on the figure (Note: The hole shown in the figure, full hole.)
For the casting of the part whose perspective pictures are given below, take into account the surface of the section, the model design, if necessary, the core design, all the molding stages and finally, draw the mold in the most suitable form for casting and name all the mold elements by showing them on the figure (Note: The hole shown in the figure is a full hole. .)
Chapter 10 Solutions
Manufacturing Engineering & Technology
Ch. 10 - Explain why casting is an important manufacturing...Ch. 10 - Why do most metals shrink when they are cast?Ch. 10 - What are the differences between the...Ch. 10 - What are dendrites? Why are they called so?Ch. 10 - Describe the difference between short and long...Ch. 10 - What is superheat? Is it important? What are the...Ch. 10 - Define shrinkage and porosity. How can you tell...Ch. 10 - What is the function of chills? What are they made...Ch. 10 - Why is the Reynolds number important in casting?Ch. 10 - What is a sprue? What shape should a sprue have if...
Ch. 10 - How is fluidity defined? Why is it important?Ch. 10 - Explain the reasons for hot tearing in castings.Ch. 10 - Why is it important to remove dross or slag during...Ch. 10 - Why is Bernoullis equation important in casting?Ch. 10 - Describe thixocasting and rheocasting.Ch. 10 - What is Chvorinovs Rule?Ch. 10 - How is a blister related to a scab?Ch. 10 - Is there porosity in a chocolate bar? In an ice...Ch. 10 - Describe the stages involved in the contraction of...Ch. 10 - Explain the effects of mold materials on fluid...Ch. 10 - It is known that pouring metal at a high rate into...Ch. 10 - Describe the events depicted in Fig. 10.5.Ch. 10 - Would you be concerned about the fact that...Ch. 10 - Review Fig. 10.8 and make a summary, explaining...Ch. 10 - Make a sketch of volume vs. temperature for a...Ch. 10 - What practical demonstrations can you suggest to...Ch. 10 - Explain why a casting may have to be subjected to...Ch. 10 - List and explain the reasons why porosity can...Ch. 10 - Why does porosity have detrimental effects on the...Ch. 10 - A spoked handwheel is to be cast in gray iron. In...Ch. 10 - Which of the following considerations are...Ch. 10 - Explain why the constant C in Eq. (10.7) depends...Ch. 10 - Are external chills as effective as internal...Ch. 10 - Explain why, as shown in Table 10.1, gray cast...Ch. 10 - Referring to Fig. 10.11, explain why internal...Ch. 10 - Note the shape of the two risers shown in Fig....Ch. 10 - Is there any difference in the tendency for...Ch. 10 - What is the influence of the cross-sectional area...Ch. 10 - It has long been observed that (a) low pouring...Ch. 10 - In casting metal alloys, what would you expect to...Ch. 10 - If you inspect a typical cube of ice, you are...Ch. 10 - How can you tell whether cavities in a casting are...Ch. 10 - Describe the drawbacks to having a riser that is...Ch. 10 - Reproduce Fig. 10.2 for a casting that is...Ch. 10 - List the process variables that affect the...Ch. 10 - Assume that you have a method of measuring...Ch. 10 - A round casting is 0.2 m (7.9 in.) in diameter and...Ch. 10 - A cylinder with a diameter of 2.0 in. and a height...Ch. 10 - The constant C in Chvorinovs rule is given as 2.5...Ch. 10 - Pure copper is poured into a sand mold. The metal...Ch. 10 - For the sprue described in Problem 10.58, what...Ch. 10 - When designing patterns for casting, pattern...Ch. 10 - Can you devise fluidity tests other than that...Ch. 10 - Figure P10.55 indicates various defects and...Ch. 10 - The fluidity test shown in Fig. 10.9 illustrates...Ch. 10 - Utilizing the equipment and materials available in...Ch. 10 - One method of relieving stress concentrations in a...Ch. 10 - Describe the effects on mold design, including the...Ch. 10 - Small amounts of slag often persist after skimming...Ch. 10 - Design an experiment to measure the constants C...
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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
- Calculate the size of a cylindrical riser (Height and diameter equal ) necessary to feed slab casting 45 * 45 * 25 cm with a side riser , casting poured horizontally in to the mould.Use caine's equation and take constants in caine equation as a= 0.18; b = 0.05 and c= 1.0.arrow_forwardA vertical true centrifugal casting process is used to make tube sections with length = 10.0 in and outside diameter = 6.0 in. The inside diameter of the tube 5.5 in at the top and 5.0 in at the bottom. At what speed must the tube be rotated during the operation in order to achieve these specifications?arrow_forward3) What are the means of elastic and plastic deformations? List the passageway (gating system) elements in sand casting moulds and show them with drawing?arrow_forward
- For pouring the part, whose perspective pictures are given below, into sand mold,model design, core design if necessary, all molding steps andFinally, draw the mold in the best way to pour and shape all the mold elements.Name it by pointing on it (Note: The hole shown in the figure is a through hole.)arrow_forwardDescribe the die casting process in detail. Use neat sketches for clarity. Differentiate clearly between hot-chamber die casting and cold-chamber die casting processes. What is the difference between true centrifugal and semi-centrifugal casting? Describe the centrifugal casting process in detail. Use neat sketches to elaborate your description.arrow_forwardDescribe the defects found on the injection/ compression moulded parts with different temperatures or time setting. Discuss the possible causes for each case.arrow_forward
- Question 3 3.1 Briefly explain the Casting and Molding processes and define their basic requirements. 3.2 If a manufacturer was asked to produce a set of plastic bottles, which method would you suggest? Justify your answer. 3.3 What is the Forging process? Explain the process including two forged products. 3.4 Briefly explain the heat treatment processing techniques using a phase diagram.arrow_forwardEx.1// A disk 40 cm in diameter and 5 cm thick is to be cast of pure aluminum in an open mold casting operation. The melting temperature of aluminum = 660°C, and the pouring temperature will be 800°C. Assume that the amount of aluminum heated will be 5% more than what is needed to fill the mold cavity. Compute the amount of heat that must be added to the metal to heat it to the pouring temperature, starting from a room temperature of 25°C. The heat of fusion of aluminum = 389.3 J/g... Assume the specific heat has the same value for solid and molten aluminumarrow_forwardFor the casting of the part whose perspective pictures are given below, take into account the section surface (model design), (core design if necessary), all molding stages and finally (the mold in the most suitable form for casting) and name all mold elements by showing them on the figure (Note: The hole seen in the figure is a full hole.)arrow_forward
- Suggest the optimum parameter setting or methods to obtain high quality moulded parts.arrow_forwardFor the sand casting of the part whose perspective pictures are given below, take into account the surface of the section, the model design, if necessary, the core design, all the molding stages and and finally draw the most suitable form mold for casting, and name all the mold elements by showing them on the figure (Note: The hole shown in the figure, full hole.) please draw the shapes more clearly and remember to draw each step.Thank you in advancearrow_forward6. In reverse drawing, the shape change is significant enough (e.g., drawing ratio greater than 2.0) that it must be carried out in two drawing steps, probably with an annealing operation between the steps. In redrawing drawing, two draws are accomplished on the part, one in one direction, the second in the opposite direction (a) true or (b) false 7. In semicentrifugal casting, a tubular mold is used and a tubular part is produced. In true centrifugal casting, the shape is solid; an example is a railway wheel. The mold is rotated so that centrifugal force is used to distribute the molten metal to the exterior of the mold so that the density of the final metal is greater at the outer sections (a) true or (b) falsearrow_forward
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