Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 34, Problem 11RQ
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Chapter 34 Solutions
Manufacturing Engineering & Technology
Ch. 34 - Explain why surface treatments may be necessary...Ch. 34 - What is shot peening? Why is it performed?Ch. 34 - What are the advantages of roller burnishing?Ch. 34 - Explain the difference between case hardening and...Ch. 34 - Describe the principles of physical and chemical...Ch. 34 - Review Fig. 34.2 and describe the principles...Ch. 34 - Prob. 7RQCh. 34 - Prob. 8RQCh. 34 - Prob. 9RQCh. 34 - Prob. 10RQ
Ch. 34 - Prob. 11RQCh. 34 - Prob. 12RQCh. 34 - Prob. 13RQCh. 34 - Prob. 14RQCh. 34 - Prob. 15RQCh. 34 - Prob. 16RQCh. 34 - Describe how roller-burnishing processes induce...Ch. 34 - Explain why some parts may be coated with...Ch. 34 - Prob. 19QLPCh. 34 - Prob. 20QLPCh. 34 - Prob. 21QLPCh. 34 - It is well known that coatings may be removed or...Ch. 34 - Make a list of the coating processes described in...Ch. 34 - Sort the coating processes described in this...Ch. 34 - Why is galvanizing important for automotive-body...Ch. 34 - Explain the principles involved in various...Ch. 34 - Taking a simple example, such as the parts shown...Ch. 34 - Estimate the plating thickness in electroplating a...Ch. 34 - Which surface treatments are functional, and which...Ch. 34 - An artificial implant has a porous surface area...Ch. 34 - If one is interested in obtaining a textured...Ch. 34 - It is known that a mirrorlike surface finish can...Ch. 34 - It has been observed in practice that a thin layer...Ch. 34 - Prob. 34SDPCh. 34 - Prob. 35SDPCh. 34 - Because they evaporate, solvents and similar...Ch. 34 - Prob. 37SDPCh. 34 - The shot-peening process can be demonstrated with...Ch. 34 - Prob. 39SDPCh. 34 - Prob. 40SDP
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- Problem 1. (Electrochemical Machining) An ECM operation is used to cut a hole into a plate of stainless steel that is 10 mm thick. The hole has a rectangular cross section, 15 mm by 25 mm. The operation is accomplished at a current = 1300 amps. Efficiency is 97%. Determine the feed rate and time to cut through the plate. The specific removal rate C for stainless steel = 2.46 x 10-² mm³/A-s. Problem 2. (Electric Discharge Machining) Iron is to be machined in an EDM operation. If discharge current = 30 amps, what is the expected metal- removal rate? The melting point of iron is known to be 1539°C, and the metal removal rate constant of proportionality K = 664 in Sl units (5.08 in U.S. customary units)arrow_forward(Electrochemical Machining) An ECM operation is used to cut a hole into a plate of stainless steel that is 10 mm thick. The hole has a rectangular cross section, 15 mm by 25 mm. The operation is accomplished at a current = 1300 amps. Efficiency is 97%. Determine the feed rate and time to cut through the plate. The specific removal rate C for stainless steel = 2.46 × 10-2 mm3/A-s. R - V = CIt I = V = gr A V At fr EA gr C(EAt) gr fr CI A CE gr Typical values of specific removal rate C' for selected work materials in electrochemical machining. Compiled from data in [11]. Specific Removal Rate C Materialª mm³/amp-sec (in³/amp-min) Materialª Aluminum (3) Copper (1) Iron (2) Nickel (2) 3.44 x 10-2 7.35 × 10-2 3.69 × 10-2 (1.26 × 10-4) (2.69 x 10-4) (1.35 × 10-4) 3.42 × 10-2 (1.25 × 10-4) X Low alloy steel High alloy steel Stainless steel Titanium (4) Specific Removal Rate C mm³/amp-sec (in³/amp-min) (1.1 × 10-4) 3.0 x 10-2 2.73 × 10-2 2.46 × 10-2 (1.0 × 10-4) (0.9 × 10-4) 2.73 x 10-2 (1.0 ×…arrow_forwardWhat are the types of cutting chip? How does the built-up-edge (BUE) form, and what are the influences of BUE on metal cutting?arrow_forward
- Which of the following processes resulted in metallurgical damage to the cut surface: a. Ultrasonic machining b. Water jet cutting C. Plasma arc cutting d. Electrochemical machining e. None of themarrow_forward04 05 a Explain the reasons for the following: 1- The pure aluminum and the copper are generally rated as easy to machine 2- In ultrasonic machining, the stress produced by the impact of abrasive particles on the workpiece surface is high. 3- In rolling process, the coefficient of friction must be sufficient. 4- Difference in solidification between casting and welding processes. 5- Why is it desirable to use energy sources for welding that have high heat densities? 6- Why there might be a change in the density of a forged product as compared to that of the cast blank. D. A cylindrical workpart with D=2.5 in and h=2.5 in is upset forged in an open die to a height = 1.5 in. Coefficient of friction at the die -work interface = 0.10 The work material has a flow curve defined by: K= 40,000 lb/in' and n-0.15. Determine the instantaneous force in the operation (a) just as the yield point is reached (yield at strain = 0.002), (b) at height = 2.3 in. (c) h= 1.9 in, and (d) h = 1.5 in. a List…arrow_forwardThe frontal working area of the electrode in an Electrochemical Machining (ECM) operation is 1000 mm. The applied current is 900 amps and the voltage is 12 volts. The resistivity of the electi olyte is 140 Q-mm. The material being cut has a valency of 4 and specific removal rate of 0.0342 mm /A-s. If the process efficiency is 90%, determine the material remova! rate (MRR) and inter-electrode gap after 30 minutes of machining when the resistivity of the electrolyte has dropped to 75% of its original value.arrow_forward
- Number 4,5,6arrow_forwardChoose TWO (2) types of cutting processes that are suitable for cutting thick materials (>20mm thick plate).arrow_forward-Illustrate the process of the Water Jet Machining (WJM) system compare to EDM (Electrical Discharge Machine) wire cutting in term of cutting operation.arrow_forward
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