Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 34, Problem 28QTP
Estimate the plating thickness in electroplating a 20-mm solid-metal ball using a current of 10 A and a plating time of 1.5 h. Assume that c = 0.08 in Eq. (34.1).
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(a)
Figure 1 shows surface roughness and tolerances obtained in Chemical
Machining (CM) and Electrochemical Machining (ECM) process for different
types of electronic products.
Comment on the differences between chemical and electrochemical machining
process in terms of surface roughness and tolerance of the machined product as
illustrated in Figure 1.
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0.6
0.5
0.4
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0.2
0.1
Product A
Product B
Product C
Product D
Products
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20
Z ECM
15
10
Product A
Product B
Product C
Product D
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Figure 1: Surface roughness and tolerances of various electronic products
Surface roughness, Ra
Tolerance, (t mm x 10)
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While removing material from iron (atomic weight = 56, valency = 2 and density = 7.8 g/cc by electrochemical machining, a metal removal rate of 2 cc/min is desired. The current (in A) required for achieving this material removal rate is...
Chapter 34 Solutions
Manufacturing Engineering & Technology
Ch. 34 - Explain why surface treatments may be necessary...Ch. 34 - What is shot peening? Why is it performed?Ch. 34 - What are the advantages of roller burnishing?Ch. 34 - Explain the difference between case hardening and...Ch. 34 - Describe the principles of physical and chemical...Ch. 34 - Review Fig. 34.2 and describe the principles...Ch. 34 - Prob. 7RQCh. 34 - Prob. 8RQCh. 34 - Prob. 9RQCh. 34 - Prob. 10RQ
Ch. 34 - Prob. 11RQCh. 34 - Prob. 12RQCh. 34 - Prob. 13RQCh. 34 - Prob. 14RQCh. 34 - Prob. 15RQCh. 34 - Prob. 16RQCh. 34 - Describe how roller-burnishing processes induce...Ch. 34 - Explain why some parts may be coated with...Ch. 34 - Prob. 19QLPCh. 34 - Prob. 20QLPCh. 34 - Prob. 21QLPCh. 34 - It is well known that coatings may be removed or...Ch. 34 - Make a list of the coating processes described in...Ch. 34 - Sort the coating processes described in this...Ch. 34 - Why is galvanizing important for automotive-body...Ch. 34 - Explain the principles involved in various...Ch. 34 - Taking a simple example, such as the parts shown...Ch. 34 - Estimate the plating thickness in electroplating a...Ch. 34 - Which surface treatments are functional, and which...Ch. 34 - An artificial implant has a porous surface area...Ch. 34 - If one is interested in obtaining a textured...Ch. 34 - It is known that a mirrorlike surface finish can...Ch. 34 - It has been observed in practice that a thin layer...Ch. 34 - Prob. 34SDPCh. 34 - Prob. 35SDPCh. 34 - Because they evaporate, solvents and similar...Ch. 34 - Prob. 37SDPCh. 34 - The shot-peening process can be demonstrated with...Ch. 34 - Prob. 39SDPCh. 34 - Prob. 40SDP
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