DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 18, Problem 9RQ
To determine
The reason for uniform temperature during hot rolling a material is desirable.
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Quiz/An eccentrically loaded bracket is welded to the support as shown in Figure below. The load is static. The weld size
for weld w1 is h1=6mm, for w2 h2 5mm, and for w3 is h3 -5.5 mm. Determine the safety factor (S.f) for the welds.
F=22 kN. Use an AWS Electrode type (E90xx).
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Chapter 18 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 18 - Briefly describe the evolution of forming...Ch. 18 - What are some of the possible means of classifying...Ch. 18 - How are bulk deformation processes different from...Ch. 18 - Prob. 4RQCh. 18 - Prob. 5RQCh. 18 - Prob. 6RQCh. 18 - Prob. 7RQCh. 18 - Why is it undesirable to minimize friction between...Ch. 18 - Prob. 9RQCh. 18 - Prob. 10RQ
Ch. 18 - Prob. 11RQCh. 18 - Prob. 12RQCh. 18 - Prob. 13RQCh. 18 - Prob. 14RQCh. 18 - Why is foil almost always rolled on a cluster...Ch. 18 - Prob. 16RQCh. 18 - Prob. 17RQCh. 18 - Prob. 18RQCh. 18 - Prob. 19RQCh. 18 - Explain how hot�rolled products can have...Ch. 18 - What is mill scale, and how can it be removed?Ch. 18 - Discuss the problems in producing uniform...Ch. 18 - Prob. 23RQCh. 18 - How might the addition of horizontal tensions act...Ch. 18 - What are some other techniques to reduce roll...Ch. 18 - What is thermomechanical processing, and what are...Ch. 18 - Provide a concise description of the forging...Ch. 18 - What are some of the types of flow that can occur...Ch. 18 - Prob. 29RQCh. 18 - Prob. 30RQCh. 18 - Prob. 31RQCh. 18 - Prob. 32RQCh. 18 - Prob. 33RQCh. 18 - Prob. 34RQCh. 18 - Prob. 35RQCh. 18 - Prob. 36RQCh. 18 - Prob. 37RQCh. 18 - Prob. 38RQCh. 18 - Prob. 39RQCh. 18 - Describe some of the primary differences among...Ch. 18 - What are some common examples of impression�die...Ch. 18 - What are some of the significant requirements of...Ch. 18 - Why are different tolerances usually applied to...Ch. 18 - What are some of the roles played by lubricants in...Ch. 18 - What are some of the attractive features of...Ch. 18 - What types of product geometry can be produced by...Ch. 18 - What is upset forging?Ch. 18 - What are some of the typical products produced by...Ch. 18 - What types of products can be produced by...Ch. 18 - What are some of the attractive features of...Ch. 18 - How does roll forging differ from a conventional...Ch. 18 - Describe the swaging process.Ch. 18 - What kind of products are produced by swaging?Ch. 18 - How can the swaging process impart different sizes...Ch. 18 - What are some possible objectives of...Ch. 18 - Provide a concise definition of extrusion.Ch. 18 - What metals can be shaped by extrusion?Ch. 18 - What are some of the attractive features of the...Ch. 18 - What is the primary shape limitation of the...Ch. 18 - What is the primary benefit of indirect extrusion?Ch. 18 - What are some temperature considerations in hot...Ch. 18 - Why might lubricant selection be more critical in...Ch. 18 - What are some possible causes of surface cracks in...Ch. 18 - How might tubular products be made by extrusion?Ch. 18 - What types of products are made using a...Ch. 18 - Why can lubricants not be used in spider�mandrel...Ch. 18 - What are some of the attractive features of...Ch. 18 - What are some unique concerns and limitations of...Ch. 18 - What is the unique capability provided by...Ch. 18 - How is the feedstock pushed through the die in...Ch. 18 - Describe the Conform process of continuous...Ch. 18 - What types of feedstock can be used in continuous...Ch. 18 - How is wire, rod, and tube drawing different from...Ch. 18 - Why are rods generally drawn on draw benches,...Ch. 18 - Why is the reduction in area significantly...Ch. 18 - What is the difference between tube drawing and...Ch. 18 - For what types of products might a floating plug...Ch. 18 - What are some of the benefits of cold drawing of...Ch. 18 - What types of materials are used for...Ch. 18 - What is the benefit of a tandem wire drawing...Ch. 18 - What is cold forming?Ch. 18 - What types of products are produced by cold...Ch. 18 - What is impact extrusion and what variations...Ch. 18 - If a product contains a large�diameter head and...Ch. 18 - What are some of the attractive properties or...Ch. 18 - What process can be used to produce seamless pipe...Ch. 18 - What type of products can be made by the...Ch. 18 - What types of rivets can be used when there is...Ch. 18 - How is coining different from a process known as...Ch. 18 - Why might hubbing be an attractive way to produce...Ch. 18 - How might a peening operation increase the...Ch. 18 - What is burnishing?Ch. 18 - Prob. 1PCh. 18 - Consider the extrusion of a cylindrical billet,...Ch. 18 - The force required to compress a cylindrical solid...Ch. 18 - Prob. 4PCh. 18 - Prob. 5PCh. 18 - Prob. 6PCh. 18 - Prob. 7PCh. 18 - Prob. 8PCh. 18 - Based on the size, shape, and desired precision,...Ch. 18 - What types of engineering materials might be able...Ch. 18 - For each of the shape generation methods in part...Ch. 18 - Which of the combinations of part 4 do you feel...Ch. 18 - For this system, outline the specific steps that...Ch. 18 - For your proposed solution, would any additional...
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- Quiz/An eccentrically loaded bracket is welded to the support as shown in Figure below. The load is static. The weld size for weld w1 is h1 = 4mm, for w2 h2 = 6mm, and for w3 is h3 -6.5 mm. Determine the safety factor (S.f) for the welds. F=29 kN. Use an AWS Electrode type (E100xx). BES FOR P 163 mm 133 mm 140 mmarrow_forwardExample -4s F(s) = = (s²+4)² As + B Cs+D + (s²+4) (s²+4)² (s²+4) (H.W)arrow_forwardQ1/ Find L[t et sin t] Q2/ Find The Laplace Transform f(t) = [sint [sint 0arrow_forwardb) The 50 mm diameter rod is placed in a hole, lubricated walls. There is no clearance between the rod and the sides of the hole. Determine the change in length of the rod if an 8 kN load is applied. Take E(brass) = 80 GPa; v = 0.55 [10] 50 mmm 300 rat 3arrow_forwardThe Mach number NM for flow of a perfect gas in a pipe depends upon the specific-heat ratio k (dimensionless), the pressure p, the density ρ, and the velocity V. Obtain by dimensional reasoning the form of the Mach number expression. (Buckingham pi)Answer: NM = f(V/sqrt(p/ρ), k)arrow_forwardoyfr 3. The figure shows a frame under the influence of an external loading made up of five forces and two moments. Use the scalar method to calculate moments. a. Write the resultant force of the external loading in Cartesian vector form. b. Determine the & direction of the resultant moment of the external loading about A. 15 cm 18 cm 2.2 N-m B 50 N 45° 10 cm 48 N.m 250 N 60 N 20 21 50 N 25 cm 100 N A 118, 27cm 5, 4:1arrow_forwardAssume the Link AO is the input and revolves 360°, determine a. the coordinates of limit positions of point B, b. the angles (AOC) corresponding to the limit positionsarrow_forwardoyfr 3. The figure shows a frame under the influence of an external loading made up of five forces and two moments. Use the scalar method to calculate moments. a. Write the resultant force of the external loading in Cartesian vector form. b. Determine the & direction of the resultant moment of the external loading about A. 15 cm 18 cm 2.2 N-m B 50 N 45° 10 cm 48 N.m 250 N 60 N 20 21 50 N 25 cm 100 N A 118, 27cm 5, 4:1arrow_forwardThe 2-mass system shown below depicts a disk which rotates about its center and has rotational moment of inertia Jo and radius r. The angular displacement of the disk is given by 0. The spring with constant k₂ is attached to the disk at a distance from the center. The mass m has linear displacement & and is subject to an external force u. When the system is at equilibrium, the spring forces due to k₁ and k₂ are zero. Neglect gravity and aerodynamic drag in this problem. You may assume the small angle approximation which implies (i) that the springs and dampers remain in their horizontal / vertical configurations and (ii) that the linear displacement d of a point on the edge of the disk can be approximated by d≈re. Ө K2 www m 4 Cz 777777 Jo Make the following assumptions when analyzing the forces and torques: тв 2 0>0, 0>0, x> > 0, >0 Derive the differential equations of motion for this dynamic system. Start by sketching LARGE and carefully drawn free-body-diagrams for the disk and the…arrow_forwardA linear system is one that satisfies the principle of superposition. In other words, if an input u₁ yields the output y₁, and an input u2 yields the output y2, the system is said to be linear if a com- bination of the inputs u = u₁ + u2 yield the sum of the outputs y = y1 + y2. Using this fact, determine the output y(t) of the following linear system: given the input: P(s) = = Y(s) U(s) = s+1 s+10 u(t) = e−2+ sin(t) =earrow_forwardThe manometer fluid in the figure given below is mercury where D = 3 in and h = 1 in. Estimate the volume flow in the tube (ft3/s) if the flowing fluid is gasoline at 20°C and 1 atm. The density of mercury and gasoline are 26.34 slug/ft3 and 1.32 slug/ft3 respectively. The gravitational force is 32.2 ft/s2.arrow_forwardUsing the Bernoulli equation to find the general solution. If an initial condition is given, find the particular solution. y' + xy = xy¯¹, y(0) = 3arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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