Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Textbook Question
Chapter 40, Problem 36SDP
Is it always desirable to purchase stock that is close to the final dimensions of a part to be manufactured? Explain why or why not and give some examples.
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Chapter 40 Solutions
Manufacturing Engineering & Technology
Ch. 40 - Explain what is meant by manufacturing properties...Ch. 40 - Why is material substitution an important aspect...Ch. 40 - What factors are involved in the selection of...Ch. 40 - How is production quantity significant in...Ch. 40 - List and describe the major costs involved in...Ch. 40 - Why does material selection influence energy...Ch. 40 - Describe life-cycle assessment and life-cycle...Ch. 40 - Define what is meant by economic order quantity.Ch. 40 - Explain the difference between direct-labor cost...Ch. 40 - Describe your understanding of the following...
Ch. 40 - What is the difference between production...Ch. 40 - Is there a significant difference between...Ch. 40 - How would you define value? Explain.Ch. 40 - Define sustainable manufacturing.Ch. 40 - What is the meaning and significance of the term...Ch. 40 - Describe the major considerations involved in...Ch. 40 - What is meant by manufacturing process...Ch. 40 - Prob. 18QLPCh. 40 - Explain why the value of the scrap produced in...Ch. 40 - Prob. 20QLPCh. 40 - Prob. 21QLPCh. 40 - Explain why it takes different amounts of energy...Ch. 40 - Refer to Table 40.2 and explain why it is...Ch. 40 - Explain how the high cost of some of the...Ch. 40 - On the basis of the topics covered in this book,...Ch. 40 - What factors are involved in the shape of the...Ch. 40 - Describe the problems that may have to be faced...Ch. 40 - Prob. 28QLPCh. 40 - Prob. 29QLPCh. 40 - Prob. 30QLPCh. 40 - Prob. 31QLPCh. 40 - Review Table 40.2 and estimate the carbon...Ch. 40 - Explain why the larger the quantity per package...Ch. 40 - Prob. 34QLPCh. 40 - As you can see, Table 40.5 lists only metals and...Ch. 40 - Is it always desirable to purchase stock that is...Ch. 40 - Prob. 37SDPCh. 40 - Prob. 38SDPCh. 40 - Prob. 39SDPCh. 40 - Over the years, numerous consumer products (such...Ch. 40 - List and discuss the different manufacturing...Ch. 40 - Prob. 42SDPCh. 40 - Prob. 43SDPCh. 40 - Select three different products commonly found in...Ch. 40 - Prob. 45SDPCh. 40 - The cross-section of a jet engine is shown in Fig....Ch. 40 - Inspect some products around your home, and...Ch. 40 - Prob. 48SDPCh. 40 - Discuss the trade-offs involved in selecting...Ch. 40 - Discuss the factors that influence the choice...Ch. 40 - Prob. 52SDPCh. 40 - Figure P40.53 shows a sheet-metal part made of...Ch. 40 - The part shown in Fig. P40.54 is a carbon-steel...
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- Based on the following specification (Figure: 12), state whether the measured component would be accepted or rejected. Please give the reasons for your decision.arrow_forwardIt pertains as to how a shape of a product is in accordance with the desired specifications.arrow_forwardWhat is the relation between product tolerance and product variation?arrow_forward
- 3) Forging: A cylindrical specimen made of annealed 4135 steel (K = 1015 MPa, n = 0.17) has a diameter of 150 mm, and is 100 mm high. It is upset between dies to a height of 50 mm at room temperature. Calculate the work done for 2 cases: a) Ideal (frictionless) b) Friction, where the coefficient of friction is 0.2. Set up on paper and solve using software. Be careful with units.arrow_forwardWhat is relation between product tolerance (engineering tolerance) and process variation.? Explain in some details showing some representation. Analyze the following study in terms: Components of variations and their contributions X Chart and R Chartarrow_forwardSuppose your company has just found $100,000 worth of outdated inventory in an old warehouse (this is the original manufacturing cost). Your boss asks you to consider two options: (1) re-engineer the outdated parts at a cost of $30,000, and ideally resell them for $60,000, or (2) scrap them for $15,000 cash (which is certain) in a second-hand market. What advice would you give your boss? Explain in your own words and give the data that supports your answer.arrow_forward
- With complete and clear units/conversion factors. Box your final answers. Thank youarrow_forwardEvaluate the different manufacturing processes used to produce a component and recommend the most suitable process based on cost, quality and time constraints.arrow_forwardA manufacturer of plastic traffic cones sells the cones at a wholesale cost of £8 pounds per cone. The variable cost for each cone is £3. The annual overhead cost for the production line is £100,000. Current production is 30,000 cones/units per annum. What is the annual profit generated by this production line? £240,000 £50,000 £50,000 £150,000 £90,000 Hide hint for Question 14 The question is asking for the annual profit and not the contribution. Use Break-even theory.arrow_forward
- As an engineer you are asked to choose 1 component from what you studied ( Screw, rolling bearing, Sliding Bearing, key, or shaft). 1. Explain what you know about that component and its types? 2. Make a sketch of the component with the important dimensions required? 3. Explain in detail what information you need to know to design this component?arrow_forwardQ1) The redesigned brake caliper is manufactured using SLM from Titanium Ti6Al-4V alloy powder. How many SLM machines are required to manufacture parts for 450 vehicleswhich are to be built in a 20-month production period. The following parameters are in effect:• A single caliper is built at a time• The caliper has a height of 173mm.• Each layer is 32 µm thick• Only one laser is used• The average laser scanning time for each layer with a single laser is 63 seconds• The powder recoating time for every odd numbered layer is 12 seconds and 25 for every evennumbered layer• Every 8th layer is scanned twice, at 2.3 times the usual laser scan speed to provide additional heatinput for in-situ heat treatment• The SLM machine operates at a duty rate of 42% of the 24-hour day, Monday to Friday, for 48 weeksof the year, with 10% of production time lost to unscheduled downtime.arrow_forwardA cylindrical workpiece of 100mm diameter and 150mm in height (Fig. 1) is upset (open die forged) at 1200° C to 100mm height disk (Fig. 2). Material of the workpiece is low carbon steel. A graphite lubricant reduces the friction to u=0.25. A press with 2-m/sec speeds is used to make this part. At 1200° C the material has the values for its C=48MPA and m=0.08 parameters Fig. 1 Height=150mm, Diameter=100mm Fig. 2 Height = 100mm, Diamete = ? mm (a) (b) (c) Determine the final diameter of the disk (see Fig. 2) Determine the true strain rate at the end of process. Calculate the flow stress at the end of the stroke.arrow_forward
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