Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Textbook Question
Chapter 17, Problem 26RQ
Why is friction such an important parameter in metalworking operations?
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11.
A load of 2 kN is dropped axially on a close coiled helical spring, from a height of 250 mm. The spring
has 20 effective turns, and it is made of 25 mm diameter wire. The spring index is 8. Find the maximum
shear stress induced in the spring and the amount of compression produced. The modulus of rigidity
for the material of the spring wire is 84 kN/mm².
[Ans. 287 MPa; 290 mm]
What is the reason for this composition?
Homework: ANOVA Table for followed design
B
AB
Dr
-1
-1
1
(15.18,12)
1
-1
-1
(45.48.51)
-1
1
-1
(25,28,19)
1
1
(75.75,81)
Chapter 17 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 17 - What is plasticity?Ch. 17 - What are some of the general assets of the...Ch. 17 - Why might large production quantities be necessary...Ch. 17 - What types of deformation may occur in forming...Ch. 17 - What is an independent variable in a...Ch. 17 - What are some considerations regarding selection...Ch. 17 - What is the significance of tool and die geometry...Ch. 17 - Why is lubrication often a major concern in metal...Ch. 17 - What are some of the secondary effects that may...Ch. 17 - Prob. 10RQ
Ch. 17 - Why is it important to be able to predict the...Ch. 17 - Prob. 12RQCh. 17 - Prob. 13RQCh. 17 - Prob. 14RQCh. 17 - Prob. 15RQCh. 17 - Prob. 16RQCh. 17 - Prob. 17RQCh. 17 - What are some of the features that may be...Ch. 17 - What features have contributed to the expanded use...Ch. 17 - What are some of the uses or applications of...Ch. 17 - Prob. 21RQCh. 17 - Prob. 22RQCh. 17 - Prob. 23RQCh. 17 - What type of information about the material being...Ch. 17 - Prob. 25RQCh. 17 - Why is friction such an important parameter in...Ch. 17 - Why are friction effects in metalworking difficult...Ch. 17 - Prob. 28RQCh. 17 - Prob. 29RQCh. 17 - Prob. 30RQCh. 17 - Prob. 31RQCh. 17 - Discuss the significance of wear in metal forming:...Ch. 17 - Lubricants are often selected for properties in...Ch. 17 - What is tribology?Ch. 17 - What are some of the common types of metal forming...Ch. 17 - What is hydrodynamic lubrication? What are some of...Ch. 17 - If the temperature of a material is increased,...Ch. 17 - Define the various regimes of cold working, warm...Ch. 17 - What is an acceptable definition of hot working?...Ch. 17 - What are some of the attractive manufacturing and...Ch. 17 - What are some of the negative aspects of hot...Ch. 17 - Prob. 42RQCh. 17 - Prob. 43RQCh. 17 - If the deformed grains recrystallize during hot...Ch. 17 - Why might a rolled thread offer improved strength...Ch. 17 - How might the temperature of a deforming workpiece...Ch. 17 - Why are heated dies or tools often employed in...Ch. 17 - What generally restricts the upper temperature to...Ch. 17 - What is the primary cause of residual stresses in...Ch. 17 - What is cold working?Ch. 17 - Compared to hot working, what are some of the...Ch. 17 - What are some of the disadvantages of...Ch. 17 - How could cold working be used to reduce the cost...Ch. 17 - Why are cold�forming processes best suited for...Ch. 17 - How can the tensile test properties of a metal be...Ch. 17 - Why is elastic springback an important...Ch. 17 - What is pickling, and how does it remove surface...Ch. 17 - Prob. 58RQCh. 17 - What engineering properties are likely to decline...Ch. 17 - Prob. 60RQCh. 17 - Prob. 61RQCh. 17 - Prob. 62RQCh. 17 - What are some of the advantages of warm forming...Ch. 17 - Prob. 64RQCh. 17 - What material feature is considered to be the...Ch. 17 - Why is isothermal forming considerably more...Ch. 17 - Prob. 67RQCh. 17 - Prob. 1PCh. 17 - Prob. 2PCh. 17 - List and discuss the various economic factors that...Ch. 17 - Prob. 4PCh. 17 - Prob. 5PCh. 17 - Prob. 6PCh. 17 - Prob. 1.1CSCh. 17 - Prob. 1.2CSCh. 17 - Which stainless steel would you recommend? Begin...Ch. 17 - Prob. 1.4CSCh. 17 - Prob. 1.5CSCh. 17 - After drawing and perforating, the residual...Ch. 17 - One of the blades has struck a rock and is badly...Ch. 17 - A second propeller, identical to the one above,...
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