DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 30, Problem 29RQ
What is an excimer?
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Chapter 30 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 30 - How do the MRRs for most NTM processes compare to...Ch. 30 - What are the steps in chemical machining using...Ch. 30 - In chemical machining, should the etchant be...Ch. 30 - What are the advantages of chemical blanking over...Ch. 30 - How are multiple depths of cut (steps) produced by...Ch. 30 - Would it be feasible to produce a groove 2 mm wide...Ch. 30 - A drawing calls for making a groove 23 mm wide and...Ch. 30 - Could an ordinary steel weldment be chemically...Ch. 30 - How could you produce a tapered section by...Ch. 30 - What is the principal application of...
Ch. 30 - How is ECM related to chemical machining?Ch. 30 - What effect does work material hardness have on...Ch. 30 - What is the principal cause of tool wear in ECM?Ch. 30 - Would electrochemical grinding be a suitable...Ch. 30 - Upon what factors does the metal removal rate...Ch. 30 - Why is the tool insulated in the ECM schematic?Ch. 30 - What is the nature of the surface obtained by...Ch. 30 - What is the principal advantage of using a moving...Ch. 30 - What effect would increasing the voltage have on...Ch. 30 - If a metal part is quite brittle and the part will...Ch. 30 - If you had to make several holes in a large number...Ch. 30 - Prob. 22RQCh. 30 - Explain (using a little physics and metallurgy)...Ch. 30 - Prob. 24RQCh. 30 - What are some possible defects that can result...Ch. 30 - What are some other uses for the laser other than...Ch. 30 - How does the laser produce coherent light...Ch. 30 - What is ablation?Ch. 30 - What is an excimer?Ch. 30 - In Figure 30.16, what is the protective tape...Ch. 30 - Why is the EBM process done in a vacuum?Ch. 30 - What is the major problem with the redesigned cap...
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- Impregnation refers to which of the following; O None of the mentioned O Something that should not happen in a factory Filling the pores of the PM part with a molten metal Putting polymers into the pores of a PM part *arrow_forwarda- Calculate the size of the critical nucleus of tin (Sn) after it has been supercooled by 20 °C. Assume that nucleation is uniform. For the solidification of tin (melting point is 232 °C), the enthalpy change is 0.42 GJ/m³. The interfacial energy between liquid and solid is 0.055 J/m². b- Answer the following questions? (Chose only two) 1- What are the advantages of the Hydrothermal growth method? 2- What are the parameters that the perfection of the final crystal is based on by using the growth from the Gel method? 3- What are the types of techniques for growing crystals from the vapor phase?arrow_forwardExplain the Solvothermal synthesis route using an example of a material.arrow_forward
- 1- Ceramic matrix composites are designed to overcome which of the following weaknesses of ceramics (two best answers): (a) compressive strength, (b) hardness, (c) hot hardness, (d) modulus of elasticity, (e) tensile strength, and (f) toughness? 2- A facing operation is normally performed on which of the following machine tools (one best answer)? (a) drill press, (b) lathe, (c) milling machine, (d) planer. 3- A cylindrical workpart 125 mm in diameter and 900 mm long is to be turned in an engine lathe. Cutting conditions are: v = 2.5 m/s, f= 0.3 mm/rev, and d = 2.0 mm. The (a) cutting time, and (b) metal removal rate are: a) 7.18 min and 1400 mm3/s 7.85 min and 1500 mm/s b) 7.85 min and 1700 mm3/s c) 7.00 min and 1500 mm/s d) 4- Which of the following materials are not composites. (d) Portland cement, (a) cemented carbide, (e) rubber in automobile tires, (b) phenolic molding compound, (c) plywood, and (f) wood? 5- Which one of the following manufacturing processes will likely result in…arrow_forwardQ1 part ( a ) What is polymer melt? Identify the relation of polymer melt to viscosity and viscoelasticity? give complete detail Q1 part (b) Identify the classifications and operations of forging.arrow_forwardAn unknown polymer sample was found to have the following molecular weight distribution: Molecular weight range 8,000 - 20,000 20,000 - 32,000 32,000 - 44,000 44,000 - 56,000 56,000 - 68,000 68,000 -80,000 80,000 - 92,000 0.03 Knowing that the monomer is methyl methacrylate, which of the below is the number average degree of polymerization for this polymer sample? Select one: O a. O b. DP 476 O C. DP = 338 DP = 664 O d. DP 544 O e. DP = 801 Xi 0.05 0.15 0.21 0.28 0.18 0.10 Wi 0.02 0.08 0.17 0.29 0.23 0.16 0.05arrow_forward
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