Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 13, Problem 14R
What is the purpose of the root pass?
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The link lengths and the value of 2 and offset for some fourbar crank-slide linkages are defined
in Table 1. The linkage configuration and terminology are shown in Figure 1. For the rows
assigned, find
(a) all possible solutions for angle & and slider position d by vector loop method.
(b) the transmission angle corresponding to angle 03. (Hint: Treat the vector R4 as virtual rocker)
Show your work in details: vector loop, vector equations, solution procedure.
Table 1
Row
Link 2
Link 3
Offset
Ө
a
1.4
4
1
45°
b
3
8
2
-30°
C
5
20
-5
225°
03
slider axis
B
X
offset
Link 2
A
R3
Link 3
R4
04
R2
02
R1
d
Figure 1.
X
Chapter 13 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 13 - Why is it important to make sure that an FCA...Ch. 13 - What major safety concerns should an FCA welder be...Ch. 13 - Why should the FCA welding practice plates be...Ch. 13 - Why should the FCA welds be of substantial length?Ch. 13 - What must be done to a shielding gas cylinder...Ch. 13 - What can happen to the wire if the conduit is...Ch. 13 - Why is it a good idea for a new student welder to...Ch. 13 - Why is the curl in the wire end straightened out?Ch. 13 - What problems can a high-feed roller pressure...Ch. 13 - Referring to Table 13-1, answer the following a....
Ch. 13 - What are the disadvantages of beveling plates for...Ch. 13 - What is the maximum plate thickness that an FCS...Ch. 13 - What is the smallest V-groove angle that can be...Ch. 13 - What is the purpose of the root pass?Ch. 13 - Why is the FCA welding process not used for...Ch. 13 - Why should convex weld faces be avoided?Ch. 13 - What bead pattern is best for overhead welds?Ch. 13 - Why is the appearance of the cover pass so...Ch. 13 - What are the visual inspection standard's...Ch. 13 - Why is the backing strip 2 in. (50 mm) longer than...Ch. 13 - Why should there be a space between the plates...Ch. 13 - What would a small notch at the root weld's...Ch. 13 - What changes should be made in the setup for...Ch. 13 - What problem must be overcome if the amperage and...Ch. 13 - How can higher welding speeds help control...Ch. 13 - How can spatter buildup on the welding gun be...
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