Manufacturing Engineering And Technology
7th Edition
ISBN: 9789810694067
Author: Stephen R. Schmid (author) Serope Kalpakjian (author)
Publisher: Pearson Education Orphans
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Textbook Question
Chapter 14, Problem 23QLP
What are the advantages and limitations of using die inserts? Give some examples.
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Forging procedures may be characterised in part by the degree to which the amount of work that can be done is restricted in the die. Give me the names of the three primary categories that result from this grouping.
Describe with the aid of a neat sketches two forging processes and briefly discuss their relative merits and limitations:
One way to define forging procedures is by the extent to which the work is constrained in the die. Explain this classification system by identifying the three primary classes.
Chapter 14 Solutions
Manufacturing Engineering And Technology
Ch. 14 - What is the difference between cold, warm, and hot...Ch. 14 - Explain the difference between open-die and...Ch. 14 - Explain the difference between fullering, edging,...Ch. 14 - What is flash? What is its function?Ch. 14 - Why is the intermediate shape of a part important...Ch. 14 - Describe the features of a typical forging die.Ch. 14 - Explain what is meant by load limited, energy...Ch. 14 - What type of parts can be produced by rotary...Ch. 14 - Why is hubbing an attractive alternative to...Ch. 14 - What is the difference between piercing and...
Ch. 14 - What is a hammer? What are the different kinds of...Ch. 14 - Why is there barreling in upsetting?Ch. 14 - What are the advantages and disadvantages of...Ch. 14 - Why are draft angles required in forging dies?Ch. 14 - Is a mandrel needed in swaging?Ch. 14 - Describe and explain the factors that influence...Ch. 14 - How can you tell whether a certain part is forged...Ch. 14 - Identify casting design rules, described in...Ch. 14 - Describe the factors involved in precision...Ch. 14 - Why is control of the volume of the blank...Ch. 14 - Why are there so many types of forging machines...Ch. 14 - What are the advantages and limitations of cogging...Ch. 14 - What are the advantages and limitations of using...Ch. 14 - Review Fig. 14.6e and explain why internal draft...Ch. 14 - Comment on your observations regarding the...Ch. 14 - Describe your observations concerning the control...Ch. 14 - Prob. 27QLPCh. 14 - Describe the difficulties involved in defining the...Ch. 14 - Describe the advantages of servo presses for...Ch. 14 - List the general recommendations you would make...Ch. 14 - Which would you recommend, (a) hot forging and...Ch. 14 - Take two solid, cylindrical specimens of equal...Ch. 14 - Calculate the room-temperature forging force for a...Ch. 14 - Using Eq. (14.2), estimate the forging force for...Ch. 14 - To what thickness can a solid cylinder of 1020...Ch. 14 - In Example 14.1, calculate the forging force,...Ch. 14 - Using Eq. (14.1), make a plot of the forging...Ch. 14 - How would you go about estimating the punch force...Ch. 14 - A mechanical press is powered by a 30-hp motor and...Ch. 14 - A solid cylindrical specimen, made of a perfectly...Ch. 14 - Devise an experimental method whereby you can...Ch. 14 - Assume that you represent the forging industry and...Ch. 14 - Figure P14.44 shows a round impression-die forging...Ch. 14 - Prob. 45SDPCh. 14 - Prob. 46SDPCh. 14 - Review the sequence of operations in the...Ch. 14 - Prob. 48SDPCh. 14 - Discuss the possible environmental concerns...Ch. 14 - List the advantages and disadvantages in using a...
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- Describe the effect that extrusion has on material properties with examplesarrow_forward1. A round wire made from 1020 carbon steel is being drawn from a diameter of 12.5 mm to 9.5 mm in a draw die of 10°. For a coefficient of friction of 0.15, calculate required drawing force. 2. How would the extrusion process be effected if the die angle is increased?arrow_forwardWhat is K constant in sheet metal bending? How to calculate shear force and extrusions? Formulas?arrow_forward
- Why is friction generally undesirable in metal forming operations?arrow_forwardA 300 mm thick slab is being cold rolled using roll of 600 mm diameter. If the coefficient of friction is 0.08, the maximum possible reduction is,arrow_forwardWhat are the advantages of a counterblow or impact forging machine? What are some of the properties desired in forging dies?arrow_forward
- What is K-constant when it comes to sheet metal bending? How do you measure it and what's the formula?arrow_forwardThe quantity of work that can be done in the die may be used as a defining feature of forging processes. Please identify the following three broad classes that this sorting generates.arrow_forwardWith a neat diagram differentiate the direct and indirect extrusion process. Write any two advantages and applications of extrusion.arrow_forward
- Forging procedures may be classified in part by how much room there is for movement in the die. Please identify the three primary classes that this system generates.arrow_forwardExplain what you know about crystallographic anisotropy, which has an important place in sheet metal forming operations, with the help of shapes and formulations.arrow_forwardA solid cylindrical work piece is reduced in height by an open die forging process using flat dies on a mechanical press, powered by a 20 kW motor which operates at 35 strokes per minute with a stroke length of 160 mm. The work piece is 60 mm high and 100 mm in diameter and is to be reduced in height by 15%. The coefficient of friction during the operation is 0,18. Calculate the flow stress of work piece material if the press is set to operate at 90% of its maximum capacity.arrow_forward
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