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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Chapter 1, Problem 9RQ
In making a gold medal, what do we mean by a “relief image” cut into the die?
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Q1) Choose the correct answer in the following questions (some questions have multiple answers
that are correct).
1. The appropriate punch size for a blanking operation using to perform a cold-rolled steel (half
hard) circular part with diameter = 75.0 mm and 2.0 mm thick is:
(a) Punch diameter = 77.72 mm and Die diameter = 74.50 mm.
(b) Punch diameter = 73.50 mm and Die diameter = 75.50 mm.
(c) Punch diameter = 74.70 mm and Die diameter = 75.0 mm.
(d) Punch diameter = 75.62 mm and Die diameter = 76.0 mm.
2. In sheet metal processes, the typical of starting work geometry is:
(a) high volume-to-area ratio.
(b) low volume-to-area ratio.
(c) equal volume-to-area ratio.
3. The characteristics of hot working relative to cold working are:
(a) fracture of workpart is less likely,
(b) friction is reduced,
(c) increased strength properties,
(d) isotropic mechanical properties,
(e) less overall energy is required,
(f) lower deformation forces are required,
(g) more significant shape changes are…
Please answer number 6 only (Complete solution, with diagram/illustrate or analysis/explanation etc.) That would be soooo helpful and appreciated, thank you in advance!!
*the previous answer is cropped, i cant see the full solution.
The end of forging-stroke during impression-die forging is forming of
a. die cavities
O b. die flash
O c. die lines
O d. die stars
O e. die lands
Chapter 1 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 1 - What role does manufacturing play relative to the...Ch. 1 - Arent all goods really consumer goods, depending...Ch. 1 - The Subway sandwich shop is an example of a job...Ch. 1 - How does a system differ from a process? From a...Ch. 1 - Is a cutting tool the same thing as a machine...Ch. 1 - What are the major classifications of basic...Ch. 1 - Casting is often used to produce a...Ch. 1 - In the lost�wax casting process, what happens to...Ch. 1 - In making a gold medal, what do we mean by a...Ch. 1 - How is a railroad station like a station on an...
Ch. 1 - Because no work is being done on a part when it is...Ch. 1 - What forming processes are used to make a paper...Ch. 1 - What is tooling in a manufacturing system?Ch. 1 - It is acknowledged that chipâ€�type machining is...Ch. 1 - Compare Figures 1.1 and 1.16. What are the...Ch. 1 - In a modern safety razor with three or four blades...Ch. 1 - List three purposes of packaging operations.Ch. 1 - Assembly is defined as the putting together of...Ch. 1 - What are the physical elements in a manufacturing...Ch. 1 - In the production system, who usually figures out...Ch. 1 - In Figure 1.8, what do the lines connecting the...Ch. 1 - Characterize the process of squeezing toothpaste...Ch. 1 - It has been said that low-cost products are more...Ch. 1 - Prob. 24RQCh. 1 - If the rolls for the cold-rolling mill that...Ch. 1 - Make a list of service systems, giving an example...Ch. 1 - What is the fundamental difference between a...Ch. 1 - Prob. 28RQCh. 1 - What kind of process is powder metallurgy: casting...Ch. 1 - In view of Figure 1.2, who really determines the...Ch. 1 - What costs make up manufacturing cost (sometimes...Ch. 1 - What are major phases of a product life cycle?Ch. 1 - How many different manufacturing systems might be...Ch. 1 - In general, as the annual volume for a product...Ch. 1 - The Toyota truck plant in Indiana produces 150,000...Ch. 1 - A company is considering making automobile bumpers...Ch. 1 - Many companies are critically examining the...Ch. 1 - We can analogize your university to a...Ch. 1 - What kind of manufacturing system (design) is your...Ch. 1 - What are the major process steps in the assembly...Ch. 1 - What is the relationship between Figures 1.2Â...Ch. 1 - Recently, National Geographic magazine asked the...
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- In which of the following forming operations, the workpiece is pulled through a die resulting in reduction of area? a. Wire drawing O b. Rolling O c. Extrusion d. Deep drawingarrow_forwardI need answers for problems 1, 2, and 3 pertaining to the print.arrow_forwardSheet Forming Processes; V-Bending of Sheets is more expensive than Edge Bending. (T or F)In Metal Forming Processes there are 2 Basic Categories; Bulk Deformation Sheet Metalworking (T or F)In Sheet Metalworking there are 3 types of processes used; Bending Drawing Cutting (T or F)An Advantage of Hot Rolling is the process produces a final product with Small Tolerances (T or F)Direct Extrusion produces Hollow or Semi-Hollow types of Cross-Sections. (T or F)Designing a metal sheet product in the elastic zone of the Stress-Strain curve gives a longer life cycle for the products service (T or F)In the Bulk Deformation, Drawing Process, there is Tension Residual Strain. (T or F)Hot Rolling metal prevents residual stresses from building up in the made product (T or F)arrow_forward
- A compound die will be used to blank and punch a large washer out of 6061ST aluminum alloy sheet stock 3.50 mm thick. The outside diameter of the washer is 50.0 mm and the inside diameter is 15.0 mm. Determine the punch and die sizes for the punching operation. TABLE 20.1 Clearance allowance value for three sheet-metal groups. Metal Group A. 1100S and 5052S aluminum alloys, all tempers 2024ST and 6061ST aluminum alloys; brass, all tempers; soft cold- 0.045 0.060 rolled steel, soft stainless steel Cold-rolled steel, half hard; stainless steel, half-hard and full-hard 0.075 Select one: a. 18.42 mm b. 20.42 mm c. 19.42 mm d. 15.42 mmarrow_forwardAnisotropy in a metal O increases residual stresses. O properties vary with direction. increase the amount of toughness. increase the amount of springback. explosive forming increase the degree of ductility. O increases the strain hardening exponent. Vacuum line in the die is found in forging Tolling wire drawing deep drawing explosive forming Bending extrusion bar drawingarrow_forwardHaving trouble understanding how to apply the trapezoidal rule here; any help would be appreciated!arrow_forward
- An automated blanking and forming line is designed to from 2 mm thick sheet, made from 2024 Aluminum, T4 temper, into a square sheet metal part. Elongation at 50mm 20% Young’s Modulus 70GPa Yield strength 325 MPa UTS 470 A) What is the force required to punch a square piece that is 500 mm on each edge? B) If the sheet blank was bent to a radius of 5 mm, what will be the radius after springback occurs? C) What is the required bend angle to achieve a 90° final bend angel for a bend radius of 5 mm?arrow_forwardWhat force is required to punch a ½ inch hole on a 3/8 thick plate if the ultimateshearing strength of the plate is 42,000 psi?arrow_forwardHow did they get the drawing and answers?arrow_forward
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