Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 12, Problem 34SDP
If you need only a few units of a particular casting, which process(es) would you use? Why?
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Q1. Draw and explain five casting defects in sand casting process. briefly.
QUESTION 14
Pieces thicker than 5.45mm are considered sheet.
O True
O False
QUESTION 15
In sand casting, natural sands are less economical than synthetic sands.
O True
O False
QUESTION 16
Typical sheet-metal thicknesses are between 0.15 mm and 7 mm.
O True
False
what effects does casting have on material properties
Chapter 12 Solutions
Manufacturing Engineering & Technology
Ch. 12 - Why are steels more difficult to cast than cast...Ch. 12 - What is the significance of hot spots in metal...Ch. 12 - What is shrinkage allowance? Machining allowance?Ch. 12 - Explain the reason for drafts in molds.Ch. 12 - Prob. 5RQCh. 12 - What are light castings and where are they used...Ch. 12 - Name the types of cast irons generally available,...Ch. 12 - Comment on your observations regarding Fig. 12.5.Ch. 12 - Describe the difference between a runner and a...Ch. 12 - What is the difference between machining allowance...
Ch. 12 - What is dross? Can it be eliminated?Ch. 12 - Describe your observation concerning the design...Ch. 12 - If you need only a few castings of the same...Ch. 12 - Do you generally agree with the cost ratings in...Ch. 12 - Describe the nature of the design differences...Ch. 12 - Note in Fig. 12.5 that the ductility of some cast...Ch. 12 - Do you think that there will be fewer defects in a...Ch. 12 - Explain the difference in the importance of drafts...Ch. 12 - What type of cast iron would be suitable for...Ch. 12 - Explain the advantages and limitations of sharp...Ch. 12 - Explain why the elastic modulus, E, of gray cast...Ch. 12 - If you were to incorporate lettering or numbers on...Ch. 12 - The general design recommendations for a well in...Ch. 12 - The heavy regions of parts typically are placed in...Ch. 12 - What are the benefits and drawbacks to having a...Ch. 12 - When designing patterns for casting, patternmakers...Ch. 12 - Using the information given in Table 12.2, develop...Ch. 12 - The part in Figure P12.28 is to be cast of 10% Sn...Ch. 12 - Describe the general design considerations...Ch. 12 - Add more examples of applications to those shown...Ch. 12 - Explain how ribs and serrations are helpful in...Ch. 12 - List casting processes that are suitable for...Ch. 12 - Small amounts of slag and dross often persist...Ch. 12 - If you need only a few units of a particular...Ch. 12 - For the cast metal wheel illustrated in Fig....Ch. 12 - Assume that the introduction to this chapter is...Ch. 12 - In Fig. P12.37, the original casting design shown...Ch. 12 - An incorrect and a correct design for casting are...Ch. 12 - Using the method of inscribed circles, shown in...Ch. 12 - A growing trend is the production of patterns and...Ch. 12 - Repeat Problem 12.40 for the case where (a) a...
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- Describe the detailed processes about the Investment casting. Please use numbered list to show each step and process.arrow_forwardI need an answer quickly pleasearrow_forwardQUESTION 1 a) Explain what is the basic difference between expendable and permanent molds used in metal casting? Briefly also describe what are the primary advantage and disadvantage of each these two types of molds? (CO1, PO1, C2) b) Describe the steps involved in making the sand mold and the casting, including what steps that may be needed to improve the casting after it is hardened and removed? (C01, PO1, C2) c) One of Open Mold processes for shaping fibre reinforced plastics (FRP) is Hand Lay Up. List the five (5) steps involved in the Hand Lay Up method? (CO2, PO1, C2`arrow_forward
- nQ1. Evaluate Hot chamber pressure die casting process with a help of neat sketch.arrow_forward2. What are the general defects found in casting processes? Name and briefly describe two.arrow_forwardFor casting the part, whose perspective pictures are given below, into sand mold,model design, core design if necessary, all molding stages andFinally, draw the mold in the most suitable form for casting and shape all the mold elements.Name it by showing on it (Note: The hole shown in the figure is a full hole.) !!! Please draw the desired shapes !!arrow_forward
- 3. Casting (a) You want to make one bronze casting of your face, life size, and hollow. How would you do this? (b) As you fill the mold, what two parameters of the sand casting operation effect the hydrostatic pressure in the mold cavity. What does this pressure determine?arrow_forward(9,00 Puanlar) 36 - A riser in the shape of a sphere is to be designed for a sand casting mold. The casting is a rectangular plate, with length = 25 cm, width = 15 cm, and thickness = 2,5 cm. If the total solidification time of the casting itself is known to be 4,5 min, determine the diameter of the riser so that it will take 2596 longer for the riser to solidify. Riser volume: V-(nD³/6 (D=diameter) Riser area: A-TD2 Casting volume: V-L-W-t (L-Length, W=width, t=thickness)arrow_forwardQUESTIONS 1- Describe with net sketch: a. Pattern b. Riser c. Runners d. Core 2- Compare between open mold and closed mold. 3-Explain the main Procedures of Sand Casting. 4 - What are the important properties which are essential in good molding sand? Explain in details. 5- Mention advantages and disadvantages of casting. 6- Describe types of sand mold. 7- What are the common binders of sand mold and cores? 8- Describe Desirable Mold Properties. 9- Explain two types of patterns and two pattern allowances 10- Describe with sketches shell process casting (i) Composition of sand mixture (ii) Steps in molding (iii) Advantages (iv) Limitations and (v) Applications 11- Explain with Sketch the construction and operation of a hot chamber die casting machine. 12- Compare between hot chamber die casting and hot chamber die casting. 13- What is meant of investment casting? What are the main materials used for making the investment pattern. 14- Describe various kinds of patterns in use. 15- Why…arrow_forward
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