Why are metals heat-treated?

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Answer 1

Question

Chapter 26, Problem 1RQ

To determine

Why are metals heat-treated?

Expert Solution & Answer

Explanation of Solution

Heat treatment is a series of processes done to modify the physical, chemical and mechanical properties of a material. The series of heat treatments include annealing, case hardening, tempering, quenching and all.

Mostly carbon and steel are undergoing the heat treatment. It is done to increase its tensile strength and yield strength. When heat is applied the micro structure of these metals changes and thus their properties changes.

There are basic five stages in heat treatment. They are hardening, case hardening, annealing, normalizing, and tempering. The common steps for doing all these steps are heating, soaking, and cooling.

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motor supplies 200 kW at 6 Hz to flange A of the shaft shown in Figure. Gear B transfers 125 W of power to operating machinery in the factory, and the remaining power in the shaft is mansferred by gear D. Shafts (1) and (2) are solid aluminum (G = 28 GPa) shafts that have the same diameter and an allowable shear stress of t= 40 MPa. Shaft (3) is a solid steel (G = 80 GPa) shaft with an allowable shear stress of t = 55 MPa. Determine: a) the minimum permissible diameter for aluminum shafts (1) and (2) b) the minimum permissible diameter for steel shaft (3). c) the rotation angle of gear D with respect to flange A if the shafts have the minimum permissible diameters as determined in (a) and (b).

Answer 2

Question

Chapter 26, Problem 1RQ

To determine

Why are metals heat-treated?

Expert Solution & Answer

Explanation of Solution

Heat treatment is a series of processes done to modify the physical, chemical and mechanical properties of a material. The series of heat treatments include annealing, case hardening, tempering, quenching and all.

Mostly carbon and steel are undergoing the heat treatment. It is done to increase its tensile strength and yield strength. When heat is applied the micro structure of these metals changes and thus their properties changes.

There are basic five stages in heat treatment. They are hardening, case hardening, annealing, normalizing, and tempering. The common steps for doing all these steps are heating, soaking, and cooling.

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Answer 3

Question

Chapter 26, Problem 1RQ

To determine

Why are metals heat-treated?

Expert Solution & Answer

Explanation of Solution

Heat treatment is a series of processes done to modify the physical, chemical and mechanical properties of a material. The series of heat treatments include annealing, case hardening, tempering, quenching and all.

Mostly carbon and steel are undergoing the heat treatment. It is done to increase its tensile strength and yield strength. When heat is applied the micro structure of these metals changes and thus their properties changes.

There are basic five stages in heat treatment. They are hardening, case hardening, annealing, normalizing, and tempering. The common steps for doing all these steps are heating, soaking, and cooling.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 26, Problem 1RQ

To determine

Why are metals heat-treated?

Expert Solution & Answer

Explanation of Solution

Heat treatment is a series of processes done to modify the physical, chemical and mechanical properties of a material. The series of heat treatments include annealing, case hardening, tempering, quenching and all.

Mostly carbon and steel are undergoing the heat treatment. It is done to increase its tensile strength and yield strength. When heat is applied the micro structure of these metals changes and thus their properties changes.

There are basic five stages in heat treatment. They are hardening, case hardening, annealing, normalizing, and tempering. The common steps for doing all these steps are heating, soaking, and cooling.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 26, Problem 1RQ

To determine

Why are metals heat-treated?

Expert Solution & Answer

Explanation of Solution

Heat treatment is a series of processes done to modify the physical, chemical and mechanical properties of a material. The series of heat treatments include annealing, case hardening, tempering, quenching and all.

Mostly carbon and steel are undergoing the heat treatment. It is done to increase its tensile strength and yield strength. When heat is applied the micro structure of these metals changes and thus their properties changes.

There are basic five stages in heat treatment. They are hardening, case hardening, annealing, normalizing, and tempering. The common steps for doing all these steps are heating, soaking, and cooling.

Answer 6

Chapter 26, Problem 1RQ

To determine

Why are metals heat-treated?

Expert Solution & Answer

Explanation of Solution

Heat treatment is a series of processes done to modify the physical, chemical and mechanical properties of a material. The series of heat treatments include annealing, case hardening, tempering, quenching and all.

Mostly carbon and steel are undergoing the heat treatment. It is done to increase its tensile strength and yield strength. When heat is applied the micro structure of these metals changes and thus their properties changes.

There are basic five stages in heat treatment. They are hardening, case hardening, annealing, normalizing, and tempering. The common steps for doing all these steps are heating, soaking, and cooling.

Answer 7

Chapter 26, Problem 1RQ

To determine

Why are metals heat-treated?

Answer 8

Expert Solution & Answer

Explanation of Solution

Heat treatment is a series of processes done to modify the physical, chemical and mechanical properties of a material. The series of heat treatments include annealing, case hardening, tempering, quenching and all.

Mostly carbon and steel are undergoing the heat treatment. It is done to increase its tensile strength and yield strength. When heat is applied the micro structure of these metals changes and thus their properties changes.

There are basic five stages in heat treatment. They are hardening, case hardening, annealing, normalizing, and tempering. The common steps for doing all these steps are heating, soaking, and cooling.