7th Edition

ISBN: 8220100793431

Author: KALPAKJIAN

Publisher: PEARSON

Concept explainers

It is the process of permanent or temporary joining of two metal pieces with the help of heat or pressure. Two metal parts are assembled by applying an energy source for the formation of a single unit. The obtained joined metals cannot be fragmented easi…

Videos

Textbook Question

Chapter 30, Problem 46QTP

A welding operation will take place on carbon steel. The desired welding speed is around 0.8 in./s. If an arc-welding power supply is used with a voltage of 12 V, what current is needed if the weld width is to be 0.2 in.?

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 30, Problem 45QTP

Chapter 30, Problem 47QTP

Students have asked these similar questions

6) Residual stresses in the GMAW joint can be reduced through Use of low coefficient of thermal expansion and low yield strength filler metal O Increasing the weld metal volume Increasing welding current O Developing continuous multiple pass weld beads

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= Btu

QUESTION 16 What is the approximately temperature of arc needed for arc welding? O 600-1000°C O 6000-8000°C O 5000-6000°C O 2000-4000°C Click Save and Submit to save and submit. Click Saue All Answers to save all answers.

Chapter 30 Solutions

EBK MANUFACTURING ENGINEERING & TECHNOL

Ch. 30 - Describe fusion as it relates to welding...Ch. 30 - Explain the features of neutralizing, reducing,...Ch. 30 - What is stick welding?Ch. 30 - Explain the basic principles of arc-welding...Ch. 30 - Why is shielded metal-arc welding a commonly...Ch. 30 - What keeps the weld bead on a steel surface...Ch. 30 - Describe the functions and characteristics of...Ch. 30 - What are the similarities and differences between...Ch. 30 - What properties are useful for a shielding gas?Ch. 30 - What are the advantages to thermit welding?

Ch. 30 - Explain where the energy is obtained in...Ch. 30 - Explain how cutting takes place when an...Ch. 30 - What is the purpose of flux? Why is it not needed...Ch. 30 - What is meant by weld quality? Discuss the...Ch. 30 - How is weldability defined?Ch. 30 - Why are welding electrodes generally coated?Ch. 30 - Describe the common types of discontinuities...Ch. 30 - Prob. 18RQ Ch. 30 - Explain why hydrogen welding can be used to...Ch. 30 - Prob. 20RQ Ch. 30 - Prob. 21QLP Ch. 30 - It has been noted that heat transfer in gas-metal...Ch. 30 - Explain why some joints may have to be...Ch. 30 - Describe the role of filler metals in welding.Ch. 30 - List the processes that can be performed with...Ch. 30 - What is the effect of the thermal conductivity of...Ch. 30 - Describe the differences between oxyfuel-gas...Ch. 30 - Could you use oxyfuel-gas cutting for a stack of...Ch. 30 - What are the advantages of electron-beam and...Ch. 30 - Describe the methods by which discontinuities...Ch. 30 - Explain the significance of the stiffness of the...Ch. 30 - Prob. 32QLP Ch. 30 - Which of the processes described in this chapter...Ch. 30 - Prob. 34QLP Ch. 30 - Prob. 35QLP Ch. 30 - Comment on the factors involved in electrode...Ch. 30 - Prob. 38QLP Ch. 30 - Prob. 39QLP Ch. 30 - Prob. 40QLP Ch. 30 - Prob. 41QLP Ch. 30 - What is weld spatter? What are its sources? How...Ch. 30 - Describe your observations concerning Fig. 30.20.Ch. 30 - Prob. 44QLP Ch. 30 - Plot the hardness in Fig. 30.20d as a function of...Ch. 30 - A welding operation will take place on carbon...Ch. 30 - In Fig. 30.26b, assume that most of the top...Ch. 30 - A welding operation takes place on an...Ch. 30 - An arc welding operation is taking place on carbon...Ch. 30 - Comment on workpiece size and shape limitations...Ch. 30 - Arc blow is a phenomenon where the magnetic...Ch. 30 - Review the types of welded joints shown in Fig....Ch. 30 - Comment on the design guidelines given in...Ch. 30 - Prob. 55SDP Ch. 30 - Prob. 56SDP Ch. 30 - Make a list of welding processes that are suitable...Ch. 30 - Prob. 58SDP Ch. 30 - Prob. 59SDP Ch. 30 - Review the poor and good joint designs shown...Ch. 30 - In building large ships, there is a need to weld...Ch. 30 - Prob. 62SDP Ch. 30 - Comment on whether there are common factors...Ch. 30 - Prob. 64SDP Ch. 30 - Lattice booms for cranes are constructed from...Ch. 30 - A common practice in repairing expensive broken...

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.