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 17, Problem 24RQ
What type of information about the material being deformed may be particularly significant to a metal�forming engineer?
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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. 1CSCh. 17 - Prob. 2CSCh. 17 - Which stainless steel would you recommend? Begin...Ch. 17 - Prob. 4CSCh. 17 - Prob. 5CSCh. 17 - After drawing and perforating, the residual...
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- Discussion / 1-What is hardness and what is the benefit of calculating it? 2- Classify the materials that have the highest hardness? 3-What does the change of metal type of Brinell ball depend on? 4-What are the means of developing a Brinell test device from your point of view? 5-How does the accuracy of the results in the experiment depend ? V jjo Varrow_forwardHow are (yield strength and E-modules )affected when we increase the hardness of a metal?arrow_forwardChoose the best , fast please.arrow_forward
- How can the effects of thermal expansion be controlled so as not to significantly affect integrity of engineering materials?arrow_forward1) The stresses and strains in metal forming are of which type? Elastic_plastic_ultimatefracture_none of these 2) The applied stresses in most bulk deformation processes are- Shear_tensile_compressive_bending_none of these 3) What is the difference between the physical shape of bulk deformation and sheet metalworking manufacturing processes?. In bulk deformation, the work parts have a. area-to-volume ratio, whereas in sheet metalworking, the area-to-volume ratio is Low, high_high,low_high,high,low,low 4) is a bulk deformation process in which a workpiece is compressed between two opposing dies, so that the die shapes are imparted to the work. Rolling_forging_drawing_extrusions_none of these 5) is a compression bulk deformation process in which the work material is forced to flow through a die orifice, thereby forcing its cross section to assume the profile of the orifice Forging.extrusion_drawing.extendingrollingnone of these 6) is a bulk deformation process in which the diameter of a…arrow_forwardQuestion 3: Describe how the compatibility equation of deformation can be used to solve statical indeterminate structures?arrow_forward
- (one or more option can be true please select from below) which of the following will reduce the failure strength or lifetime of a test piece and why? Decreasing the grain size, more grain boundaries to initiate failure Raising the temperature above the BDTT, more plastic deformation in the lattice will cause it to fail faster Increasing its volume, greater likelihood of critical defects Decreasing the loading frequency, the material will be at peak stress values for longer Increasing the difference between the maximum and minimum stress values, as this affects the stress concentration factorarrow_forwardWhat is true stress and true strain?arrow_forwardStuck need help! Problem is attached. please view attachment before answering. Really struggling with this concept. Please show all work so I can better understand ! Thank you so much.arrow_forward
- c) Calculate ore grade when (12 - Pn) t (tonnes) of copper is extractable from a copper ore mine deposit containing 2200(1 + Pn ) t of both pure and none-pure (waste) rock? Pn = 0.6 h) Table below presents deformation recorded at a point on the slopes of a pit at different times. This data corresponds to the displacement monitoring measurements over a period of time prior to the installation of the rock bolts. (a) Plot these points by choosing time as your x-axis and deformation as your y-axis and fit the best curve representing your data at the station. Does the data reveal any warning for slope failure? (c) If yes, estimate the failure time. Time (Days 0 1 3 Displ (mm) 0 2 3 5 3 7 4 9 11 13 15 17 19 21 23 25 27 29 6 4 6 10 12 15 20 30 40 60 90arrow_forwardbrief and concise essayWhy is it important to know the suitable fabrication/processing technique to be used for a certain metal?arrow_forwardGiven your understanding of what initiates and controls failure in materials, which of the following will increase the failure strength or lifetime of a test piece or component and why? a. Polishing to reduce surface defects b. Decreasing the temperature below the brittle-ductile transition temperature, to make it harder C. Increasing its volume, to give a larger cross sectional area d. Increasing the grain size so there are less grain boundaries to initiate failure e. Decreasing the difference between the maximum and minimum stress values, as this effects the stress concentration factorarrow_forward
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