Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 13, Problem 54RQ
Define the following riser-related terms: top riser, side riser, open riser, blind riser, live riser, and dead riser.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
i need the answer quickly
What is the hardening process? What is rooting?
Manufacturing Processes
Chapter 13 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 13 - What are the six activities that are conducted on...Ch. 13 - What is materials processing?Ch. 13 - What are the five basic families of...Ch. 13 - Describe the capabilities of the casting process...Ch. 13 - What are some of the various mold materials and...Ch. 13 - How might the desired production quantity...Ch. 13 - Why is it important to provide a means of venting...Ch. 13 - What types of problem or defect can occur if the...Ch. 13 - Why might product removal be less of a problem...Ch. 13 - What is a casting pattern? Flask? Core? Mold...
Ch. 13 - In a horizontally parted two-part mold, what is...Ch. 13 - What are some of the components that combine to...Ch. 13 - What is a parting line or parting surface?Ch. 13 - What is draft, and why is it used?Ch. 13 - Why is it important to control the solidification...Ch. 13 - What are the two stages of solidification, and...Ch. 13 - Why is it that most solidification does not begin...Ch. 13 - Why might it be desirable to promote nucleation in...Ch. 13 - Nucleation generally begins at preferred sites...Ch. 13 - Why might directional solidification be desirable...Ch. 13 - Describe some of the key features observed in the...Ch. 13 - What is superheat?Ch. 13 - Prob. 23RQCh. 13 - What is a liquidus temperature? A solidus...Ch. 13 - What is the freezing range for a metal or alloy?Ch. 13 - Discuss the roles of casting volume and surface...Ch. 13 - What characteristics of a specific casting process...Ch. 13 - What is the correlation between cooling rate and...Ch. 13 - What is the chill zone of a casting, and why does...Ch. 13 - Which of the three regions of a cast structure is...Ch. 13 - What is dross or slag, and how can it be prevented...Ch. 13 - What are some of the possible approaches that can...Ch. 13 - What is a misrun or cold shut, and what causes...Ch. 13 - What is fluidity, and how can it be measured?Ch. 13 - What is the most important factor controlling the...Ch. 13 - What defect can form in sand castings if the...Ch. 13 - Why is it important to design the geometry of the...Ch. 13 - Why might it be preferable to attach gates to the...Ch. 13 - Prob. 39RQCh. 13 - What are some desirable features in the sprue...Ch. 13 - What is a choke, and how does its placement affect...Ch. 13 - What features can be incorporated into the gating...Ch. 13 - What are some of the materials and designs of...Ch. 13 - What factors might influence the positioning of...Ch. 13 - What features of the metal being cast tend to...Ch. 13 - What are the three stages of contraction or...Ch. 13 - Why is it more difficult to prevent shrinkage...Ch. 13 - What steps can be taken to compensate for the...Ch. 13 - During what stage of shrinkage might hot tears...Ch. 13 - What is the role of a riser?Ch. 13 - Why is it desirable to design a casting to have...Ch. 13 - What is yield, and how does it relate to the...Ch. 13 - Based on Chvorinovs rule, what would be an ideal...Ch. 13 - Define the following riser-related terms: top...Ch. 13 - What assumptions were made when using Chvorinovs...Ch. 13 - Discuss aspects relating to the connection between...Ch. 13 - What is the purpose of a chill? Of an insulating...Ch. 13 - What are some materials that are commonly used to...Ch. 13 - What types of modifications or allowances are...Ch. 13 - Prob. 60RQCh. 13 - What is the purpose of a draft or taper on pattern...Ch. 13 - Why is it desirable to make the pattern allowances...Ch. 13 - What additional adjustment or correction must be...Ch. 13 - What are some of the features of the casting...Ch. 13 - Prob. 65RQCh. 13 - What are some design recommendations for inside...Ch. 13 - What are some appearance considerations in parting...Ch. 13 - Prob. 68RQCh. 13 - Prob. 69RQCh. 13 - Using Chvorinovs rule as presented in the text...Ch. 13 - Reposition the riser in Problem 1 so that it sits...Ch. 13 - A rectangular casting having the dimensions 3 in....Ch. 13 - A cylinder with a diameter of 2.5 in. and a height...Ch. 13 - Figure 13.Ashows the wall profile of a cast iron...Ch. 13 - Investigate various experimental techniques to...Ch. 13 - Porosity within a casting can be either...Ch. 13 - The chapter text describes various materials that...Ch. 13 - What is the most likely source of the gas bubbles?...Ch. 13 - What factors may have caused the penetration...Ch. 13 - Prob. 3CSCh. 13 - Prob. 4CSCh. 13 - Prob. 5CS
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- (3):-The suitable type of casting to making tubs and cylinders is by a --- a- Lost wax casting b- Centrifugal casting c- Sand casting d- Continuous casting (4):- The surface of product Extruded by ----- Extrusion process has high smooth a- Hot b- Cold e- Warm (5):- High temperature leads to ----- he metal's ability to form a- Decreases b- Increases c- Non affected onarrow_forwardWhat is the advantage in casting turbine blades that have either highly aligned grain boundaries or no grain boundaries at all?arrow_forwardA flat plate is to be cast in an open mold whose bottom has a square shape of 12.5 cm by 12.5 cm. The mold is 7.0 cm deep. A total of 350 cm³ of molten aluminum is poured into the mold. Solidification shrinkage is known to be 6.25%, which is a volumetric contraction, not a linear contraction. Table 7.1 lists the linear shrinkage due to thermal contraction after solidification. If the availability of molten metal in the mold allows the square shape of the cast plate to maintain its square dimension until solidification is completed, determine the final dimensions (width and height) of the plate.arrow_forward
- (9,00 Puanlar) 36 - A riser in the shape of a sphere is to be designed for a sand casting mold. The casting is a rectangular plate, with length = 25 cm, width = 15 cm, and thickness = 2,5 cm. If the total solidification time of the casting itself is known to be 4,5 min, determine the diameter of the riser so that it will take 2596 longer for the riser to solidify. Riser volume: V-(nD³/6 (D=diameter) Riser area: A-TD2 Casting volume: V-L-W-t (L-Length, W=width, t=thickness)arrow_forward3. (Slow or Fast, which one? – Circle one) cooling rates results in coarse dendritic structures. 4. The higher the viscosity of the melt, the . its fluidity? 5. Name 3 defects in casting: 6. Internal or external are an effective means of reducing shrinkage porosity during solidification. 7. Is green-sand molding expensive? 8. .... are inserts placed in the molds to form the hollow regions in casting. 9. The method of casting turbine blades: Sample A 10. Which one has higher stiffness? Sample A or Sample B Sample B 11. Which one has higher toughness? Sample A or Sample B 12. Which one has higher strength? Sample A or Sample B 13. Which one has higher ductility? Sample A or Sample 14. Higher ......... means more rigidity. Strain 15. Before the no-slip point, the velocity is (higher or lower, which one? - Circle one) 16. In flat-rolling process, using smaller diameter rolls (increases or decreases, which one? - Circle one) the roll force. 17. Balls for ball bearings can be made by rolling…arrow_forward2. What do the various elements that comprise the gating system? what are the pouring basin in a sand casting? 3. Explain why a sprue should be tapered? 4. What are the disadvantages of die casting? 5. Explain the various kinds of patterns in use. What are the allowances provided How do the patterns differ from the casting required? 6. Define Expendable-mold, Expendable-pattern Casting Processesarrow_forward
- h, is placed on the top of the mold cavity of a closed type sand mould as shown in the figure. If the riser is of constant volume, then the rate of solidification in the riser is the least when the lindrical blind riser with diameter dand height is ratio h: d is Sprue basin Riser Mould cavityarrow_forward(c) A square casting has a volume and surface area equal to 1000 mm³ and 600 mm² respectively, and a cylindrical riser through which the molten metal is poured has a volume and surface area equal to 282 mm³ and 244 mm² respectively. Using Chvorinov's rule, determine whether such a design would avoid shrinkage cavities.arrow_forwardNonearrow_forward
- Converging passage is used for feeding the liquid molten metal into the mould to (a) increase the rate of feeding (b) quickly break off the protruding portion of the casting (c) decrease wastage of cast metal (d) avoid aspiration of airAarrow_forwardState the steps that must be taken to correct the following casting defects: 1. Formation of discontinuity in the casting.- 2. Cast surface consisting of a mixture of sand and metal. 3. Casting with balloon-shaped gas cavity near the surface. 4. Formation of hot tearing in expandable and permanent mold casungs. 5. Metal splatters during pouring and solid globules form and become entrapped in casting.arrow_forwardA flat plate is to be cast in an open mold whose bottom has a square shape that is 200 mm by 200 mm. The mold is 40 mm deep. A total of 106 mm3 of molten aluminum is poured into the mold. Solidification shrinkage is known to be 6.0%. The linear shrinkage due to thermal contraction after solidification is 1.3%. If the availability of molten metal in the mold allows the square shape of the cast plate to maintain its 200 mm by 200 mm dimensions until solidification is completed, determine the final dimensions of the plate.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Casting Metal: the Basics; Author: Casting the Future;https://www.youtube.com/watch?v=2CIcvB72dmk;License: Standard youtube license