DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Textbook Question
Chapter 38, Problem 22RQ
Why is laser-beam welding an attractive process for producing tailored blanks for sheet metal forming? For use on small electronic components?
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Chapter 38 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 38 - What are some joining conditions where welding...Ch. 38 - What are some of the lower-temperature methods of...Ch. 38 - In what ways is a thermit weld similar to the...Ch. 38 - What is the source of the welding heat in thermit...Ch. 38 - For what types of applications might thermit...Ch. 38 - What is the source of the welding heat in...Ch. 38 - What are some of the various functions of the slag...Ch. 38 - Electroslag welding would be most attractive for...Ch. 38 - What is the source of heat in electron-beam...Ch. 38 - Why is a high vacuum required in the electron-beam...
Ch. 38 - What types of production limitations are imposed...Ch. 38 - What are the major assets and negative features of...Ch. 38 - What are some of the attractive features of...Ch. 38 - What is unique about the fusion zone geometry of...Ch. 38 - Describe the weld pool geometry and size of the...Ch. 38 - What is an autogenous weld?Ch. 38 - What might be necessary to permit the laser...Ch. 38 - What are some of the Ways in which laser-beam...Ch. 38 - What are the three common types of industrial...Ch. 38 - Which type of laser light can be transmitted...Ch. 38 - What are some of the attractive features of a...Ch. 38 - Why is laser-beam welding an attractive process...Ch. 38 - What are the attractive properties of hybrid...Ch. 38 - Prob. 24RQCh. 38 - What is the function of the assist gas in...Ch. 38 - What is the difference between exothermic cutting...Ch. 38 - Which type of laser is preferred for cutting...Ch. 38 - Prob. 28RQCh. 38 - Prob. 29RQCh. 38 - What features have made lasers a common means of...Ch. 38 - What are some of the attractive features of laser...Ch. 38 - What are some common objectives of surfacing...Ch. 38 - What types of materials are applied by surfacing...Ch. 38 - Prob. 34RQCh. 38 - What is the benefit of high-velocity oxyfuel...Ch. 38 - What are some of the arc or plasma techniques that...Ch. 38 - How is thermal spraying similar to surfacing? How...Ch. 38 - Prob. 38RQCh. 38 - Prob. 39RQCh. 38 - Provide a reasonable definition of brazing?Ch. 38 - What are some key differences between brazing and...Ch. 38 - What kinds of materials or combinations can be...Ch. 38 - What advantages can be gained by the lower...Ch. 38 - Why do brazed joints have an enhanced...Ch. 38 - What is the most important factor influencing the...Ch. 38 - How does capillary action relate to joint...Ch. 38 - Why is it necessary to adjust the initial...Ch. 38 - What is wettability? Fluidity? How do each relate...Ch. 38 - What are the two most common types of brazed...Ch. 38 - How do the butt-lap and scarf joint configurations...Ch. 38 - What are some important considerations when...Ch. 38 - What are some of the most commonly used brazing...Ch. 38 - Why are eutectic alloys attractive as brazing...Ch. 38 - What special measures should be taken when brazing...Ch. 38 - What are the three primary functions of a brazing...Ch. 38 - Why is it important to preclean brazing surfaces...Ch. 38 - How might braze metal be preloaded into joints?Ch. 38 - What is the purpose of brazing jigs and fixtures?Ch. 38 - 59- What are some factors to consider when...Ch. 38 - What are the advantages and disadvantages of torch...Ch. 38 - What is the primary attraction of furnace-brazing...Ch. 38 - Why might reducing atmospheres or a vacuum be...Ch. 38 - What are some of the attractive features of...Ch. 38 - Why is dip brazing usually restricted to use with...Ch. 38 - What are some of the attractive features of...Ch. 38 - Why is flux removal a necessary part of many...Ch. 38 - What benefits can be achieved through fluxless...Ch. 38 - How does braze welding differ from traditional...Ch. 38 - What is the primary difference between brazing and...Ch. 38 - What are the six steps of a soldering operation?Ch. 38 - Why is soldering unattractive if a high-strength...Ch. 38 - For many years, the most common solders have been...Ch. 38 - What is driving the conversion to lead-free...Ch. 38 - What are some of the difficulties encountered when...Ch. 38 - What are the two basic families of soldering flux?Ch. 38 - What are some of the more common heat sources for...Ch. 38 - Why is wave soldering attractive for making the...Ch. 38 - Describe the vapor-phase soldering process.Ch. 38 - A common problem with brazed or soldered joints is...Ch. 38 - When molten metal deposition is applied to a...Ch. 38 - Prob. 3P
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- 1. Wire drawing is cold working process use to decrease the dimeter of wire. A) Explain the process. B) Discuss the effect of this process on mechanical properties in'details? Sketch to illustrate your explanation. 2. Name and explain a manufacturing process of making open end wrench? 3. How can you decided whether to use a cold work or hot work processes? 4. Briefly explain arc welding and oxyacetylene welding? ( 5. Submerged arc welding is suitable for non-ferrous metals. YES, OR NO, AND EXPALIN WHY? 6. Briefly explain powder metallurgy (P/M)? 7. What is flux in welding. What is the main purpose of using it? . 8. Name and explain a method used to measure particle size of powder, especially if you have variety of sizes?( 9. Briefly explain the metallurgy of welding. Sketch it?arrow_forwardA gas metal arc welding test is performed to determine the value of melting factor f₂ for a certain metal and operation. The welding voltage = 25 volts, current = 125 amps, and heat transfer factor is assumed to be = 0.90, a typical value for GMAW. The rate at which the filler metal is added to the weld is 0.50 in³ per minute, and measurements indicate that the final weld bead consists of 57% filler metal and 43% base metal. The unit melting energy for the metal is known to be 75 Btu/in³. (a) Find the melting factor. (b) What is the travel speed if the cross-sectional area of the weld bead = 0.05 in²?arrow_forwardWhen steel is joined using arc welding, only the liquid fusion zone must be protected by a gas or flux. However, when titanium is welded, both the front and back sides of the welded metal must be protected. Why must these extra pre-cautions be taken when joining titanium?arrow_forward
- (c) Two carbon steel workpieces were joined together by welding. The type of joint is butt joint. (i) With the aid of sketches, state ONE (1) suitable fusion and ONE (1) suitable solid- state welding processes. Compare both of the processes. (ii) Explain the effect of heat on the microstructure and material properties of the base metal after the welding process.arrow_forwardQ4 (a) Discuss the differences between fusion and solid state welding.arrow_forwardI need the answer as soon as possiblearrow_forward
- 4. why Filler metals are used in fusion welding process?arrow_forwardA pipe can be manufactured as (a) seamless (cold rolled and extruded) or (b) hot rolled and welded. (i) Describe the process for manufacturing each type of pipe: (a) Seamless (cold rolled and extruded) pipe; (b) Hot rolled and welded pipe. (ii) Why might a cold rolled seamless pipe be better suited to drilling operations than a hot rolled and welded pipe? A particle reinforced composite (containing flakes) has particles evenly distributed throughout the matrix where the rule of mixtures applies. (i) State THREE effects that a larger volume of carbon particles within the matrix produces. A drill bit is a cutting tool on the end of a rotary subsea drill. A Thermally Stable Polycrystalline (TSP) drill bit can be used to drill a subsea well. TSP bits are man-made polycrystalline structures consisting of a multitude of synthetic diamond crystals sintered together at high pressure and temperature, used to aid cutting into hard rock formations. (i) Describe THREE reasons why this type…arrow_forwardPlease help me with this problemarrow_forward
- ANSWER FAS WITH A SUMMARIZED SOLUTIONarrow_forward(b) Two flat aluminum sheets (each 1 mm thick) are being spot welded by use of a current of 5000A and a current flow time of 0.2 s. The electrodes are 3 mm in diameter. Assume that the resistance is 200µ2. Given the density of aluminum is 2.70 g/cm³ and the latent heat of fusion (hf) for aluminum is 321 J/g.arrow_forwardProvide a reasonable explanation for the following observation: a welded component made of Al 6061-T6 alloy is routinely found to deform plastically first in the region adjacent to the weld joint despite the fact that the stress is nominally the same everywhere in the component. What solution would you propose to fix this problem, assuming that the weld joint cannot be eliminated from the design?arrow_forward
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Metal Joining Process-Welding, Brazing and Soldering; Author: Toc H Kochi;https://www.youtube.com/watch?v=PPT5_fDSzGY;License: Standard YouTube License, CC-BY