Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Textbook Question
Chapter 4, Problem 10RQ
Explain what is meant by “severity of quenching.”
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1.Mention four quenchants and describe how each of them affect the strength of the material being quenched arranging them in a decending ordrer.
2. Draw a typical time temperature transformation diagram showing how a material is cooled under critical cooiling rate.
3. explain non equilibrium cooling
What is quenching ? Why should quenched still be tempered ? Discuss .
Explain the reason for the quenching cracking that may occur when hardening some parts. Describe the alternative methods applied to prevent this situation by showing them on a single figure.
Chapter 4 Solutions
Manufacturing Engineering & Technology
Ch. 4 - Describe the difference between a solute and a...Ch. 4 - What is a solid solution?Ch. 4 - Prob. 3RQCh. 4 - Describe the difference between a single-phase and...Ch. 4 - What is an induction heater? What kind of part...Ch. 4 - Describe the major features of a phase diagram.Ch. 4 - What do the terms equilibrium and constitutional,...Ch. 4 - Prob. 8RQCh. 4 - What is tempering? Why is it performed?Ch. 4 - Explain what is meant by severity of quenching.
Ch. 4 - What are precipitates? Why are they significant in...Ch. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - You may have seen some technical literature on...Ch. 4 - Prob. 17QLPCh. 4 - What is the difference between hardness and...Ch. 4 - Prob. 19QLPCh. 4 - Prob. 20QLPCh. 4 - Prob. 21QLPCh. 4 - Describe the characteristics of (a) an alloy, (b)...Ch. 4 - Explain why carbon, among all elements, is so...Ch. 4 - Prob. 24QLPCh. 4 - In Section 4.8.2, several fluids are listed in...Ch. 4 - Why is it important to know the characteristics of...Ch. 4 - Explain why, in the abscissa of Fig. 4.16c, the...Ch. 4 - Prob. 28QLPCh. 4 - Prob. 29QLPCh. 4 - Prob. 30QLPCh. 4 - Design a heat-treating cycle for carbon steel,...Ch. 4 - Using Fig. 4.4, estimate the following quantities...Ch. 4 - Prob. 33QTPCh. 4 - Prob. 34QTPCh. 4 - Prob. 35SDPCh. 4 - Figure 4.18b shows hardness distributions in...Ch. 4 - Throughout this chapter, you have seen specific...Ch. 4 - Refer to Fig. 4.24, and think of a variety of...Ch. 4 - Inspect various parts in your car or home, and...
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- Give information about tempering heat treatment temperature stages, microstructures formed and effects on mechanical properties.arrow_forwardWhy does the hardness decrease at 600 ° C after rising when the tempering processarrow_forwardBriefly explain the heat treatment steps of a tool steel by use of proper drawings and explainwhy multiple tempering is applied during heat treatment?arrow_forward
- What can be done to speed up the quenching rate in any liquid?arrow_forwardWhy is brine quenching faster than water quenching?arrow_forward3) The dihedral wetting angle between solid- liquid interface with lowest solidification cracking tendency under identical welding conditions is 0° O45° 60° 90°arrow_forward
- It has been suggested that compared to SMAW, the cooling rate is higher in GMAW and it is, therefore, more likely for heat-affected zone cracking to occur in hardenable steels. What is the main reason for the cooling rate to be higher in GMAW than SMAW?arrow_forwardExplain the concept and procedures involved in a case hardening process of a low carbon steel and provide an example of the application of this technique to solving engineering problemsarrow_forwardNeed correctlyarrow_forward
- Choose... Annealing Tempering Hardening Match the following. Normalizing The heat treatment process which is used to increase the ductility of Choose... a hardened steel without loosing the hardness. The heat treatment process in which metal is heated above recrystallization temperature and then suddenly cooled. Choose...arrow_forwardDuring thermal tempering, a glass piece is heated to a temperature: A = %3D Above the glass transition temperature. ; B = Below the glass transition temperature. ; C = Above the softening point. ; D = Below the softening point. A & C B & D A & D B & Carrow_forwardDescribe the phase transformation in tempering processarrow_forward
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