EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 31, Problem 36QLP
To determine
In spot-weld tests, what would be the reason for weldfailure to occur at the locations shown in Fig. 31.9?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Please make the answer long. Thank you!
Assume that two 1.5-mm thick steel sheets are being spot welded at a current of 4000 A and current-flow time is 0.3 s. Using electrodes 5 mm in diameter, estimate the amount of heat generated and the amount of heat required to melt the weld nugget. Use an effective resistance of 350 un. Take u= 9,7 Joule/mm Which one of the following are correct? O
a. If the electrodes were 7 mm diameter, the amount of heat generated would decrease
b. The amount of heat generated by the equipment is between 1600 to 1700 Joules
c. The equipment has enough power to weld the steel sheets.
d. The equipment does not have enough power to weld the steel sheets
e. The amount of heat required is between 700 and 750 Joules
A welding operation is time-studied during which an operator was pace-rated as 120%. The operator took, on an average, 8 minutes for producing the weld-joint. If a total of 10% allowances are allowed for this operation. What is the expected standard production rate of the weld-joint in units per 8 hour day?
Chapter 31 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 31 - Explain what is meant by solid-state welding.Ch. 31 - What is cold welding? Why is it so called?Ch. 31 - What is (a) a ferrule, (b) filled gold, and (c) a...Ch. 31 - What are faying surfaces in solid-state welding...Ch. 31 - What is the basic principle of (a) ultrasonic...Ch. 31 - Explain how the heat is generated in the...Ch. 31 - Prob. 7RQCh. 31 - Describe the principle of resistance-welding...Ch. 31 - Prob. 9RQCh. 31 - What type of products are suitable for stud...
Ch. 31 - Prob. 11RQCh. 31 - Prob. 12RQCh. 31 - Prob. 13RQCh. 31 - Describe how high-frequency butt welding operates.Ch. 31 - What materials are typically used in...Ch. 31 - Make a list of processes in this chapter,...Ch. 31 - Prob. 17QLPCh. 31 - Explain the reasons why the processes described in...Ch. 31 - Explain the similarities and differences between...Ch. 31 - Describe your observations concerning Figs....Ch. 31 - Would you be concerned about the size of weld...Ch. 31 - What advantages does friction welding have over...Ch. 31 - Prob. 23QLPCh. 31 - Prob. 24QLPCh. 31 - Discuss the factors that influence the strength of...Ch. 31 - What are the sources of heat for the...Ch. 31 - Can the roll-bonding process be applied to a...Ch. 31 - Prob. 28QLPCh. 31 - List and explain the factors involved in the...Ch. 31 - Give some of the reasons that spot welding is...Ch. 31 - Prob. 31QLPCh. 31 - Prob. 32QLPCh. 31 - Prob. 33QLPCh. 31 - Prob. 34QLPCh. 31 - Prob. 35QLPCh. 31 - Prob. 36QLPCh. 31 - Prob. 37QLPCh. 31 - Prob. 38QLPCh. 31 - Which processes in this chapter are not affected...Ch. 31 - Consider the situation where two round...Ch. 31 - Prob. 41QLPCh. 31 - The energy required in ultrasonic welding is found...Ch. 31 - Prob. 43QTPCh. 31 - Prob. 44QTPCh. 31 - Prob. 45QTPCh. 31 - Prob. 46SDPCh. 31 - Explain how you would fabricate the structures...Ch. 31 - Prob. 48SDPCh. 31 - Prob. 49SDPCh. 31 - Prob. 50SDPCh. 31 - Prob. 51SDPCh. 31 - Prob. 52SDPCh. 31 - Prob. 53SDPCh. 31 - Describe the methods you would use for removing...Ch. 31 - Prob. 55SDPCh. 31 - Prob. 56SDPCh. 31 - Inspect the sheet-metal body of an automobile,...Ch. 31 - Prob. 59SDPCh. 31 - Prob. 60SDPCh. 31 - Sketch the microstructure you would expect if a...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- What are some of the problems that oxygen can cause in welds?arrow_forwardCan a tee weld be strong if the welds on both sides do not have deep penetration? Why or why not?arrow_forwardExample 27.2. A 100 mm x 10 mm plate is to be 150 mm x 10 mm by the fillet welding on three sides. The size of the weld is 6 mm. Find out the necessary over lap of the plate, for full strength of the joint. Take allowable tensile stress in plate equal to 150 N/mm and allowable stress in weld as 110 N/mm. welded to another platearrow_forward
- QUESTION 1 In an arc welding operation, a groove weld has a cross-sectional area=0.055 in² and is 24 in long. (Round your final answers to 1 decimal place) (a) What quantity of heat (in Btu) is required to accomplish the weld, if the metal to be welded is aluminum? Btu (b) How much heat must be generated at the welding source, if the heat transfer factor = 90% and the melting factor = 60%? H= Btuarrow_forwardSketch 2 NDT symbols illustrating different methods that can be used to indicate multiple test requirments for the same section of weld.arrow_forwardYour boss requests a recommendation on which process to use to weld the high strength structural steel rail tank cars hull section. You have this additional information: P-GMAW Productivity is substantially lower. However, you have welders already qualified to do manual p-GMAW welding. Labor is 80% of total cost HYPERFILLⓇ® Productivity gains are important, and the volume of the product is sufficient on the rail tank cars to justify capital investment. With confidence, you respond: Use process because .(Give process and short explanation for why you want to use that process)arrow_forward
- Please make the answer long. Thank you!arrow_forwardA GTAW operation is performed on low carbon steel, whose unit melting energy is 10.3 J/mm3. The welding voltage is 22 volts and the current is 135 amps. The heat transfer factor is 0.7 and the melting factor is 0.65. If filler metal wire of 3.5 mm diameter is added to the operation, the final weld bead is composed of 60% volume of filler and 40% volume base metal. If the travel speed in the operation is 5 mm/sec, determine (a) cross-sectional area of the weld bead, and (b) the feed rate (mm/sec) at which the filler wire must be supplied.arrow_forwardQuestion 1 1.1 Identify the weld defect shown in Figure 1 below. Provide reasons for your selection. Figure 1: Weld defect 1.2 Explain how the weld defect, shown in Figure 1, can occur. 1.3 Identify the joining process shown in Figure 2 and explain why this process is frequently used by automotive manufacturers. Figure 2: Joining process frequently used by automotive manufacturers 1.4 Explain the main differences between the joining process shown in Figure 2 and fusion welding processes. 1.5 Name important design considerations applicable to the joining process shown in Figure 2.arrow_forward
- Calculate the heat input during the arc welding process, if the voltage is 33 volts, current is 115 amperes, the length of the weld is 88mm and the time to complete the weld 34 secs.arrow_forwardT3.2.2 The bracket shown below supports an 18 kN load. The fillet weld extends for full 100 mm length on both sides. What weld size is required to give a safety factor of 3.0 if E60 series welding is used? [Ans. 10 mm] 100 mm 18kN 75 mm Note: There are two 100 mm welds. 1arrow_forward7. Determine the size of fillet welds required for the weld group shown in fig. 10.21. Fig. 10.21 127 190 x 150 kN [10 mm] Could you please show the full working for this question. Thank you!arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Welding: Principles and Applications (MindTap Cou...Mechanical EngineeringISBN:9781305494695Author:Larry JeffusPublisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...
Mechanical Engineering
ISBN:9781305494695
Author:Larry Jeffus
Publisher:Cengage Learning
Differences between Temporary Joining and Permanent Joining.; Author: Academic Gain Tutorials;https://www.youtube.com/watch?v=PTr8QZhgXyg;License: Standard Youtube License