DeGarmo's Materials and Processes in Manufacturing
DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 22, Problem 1RQ

For metal-cutting tools, what is the most important material property (i.e., the most critical characteristic)? Why?

Expert Solution & Answer
Check Mark
To determine

The most important material property for metal cutting tool.

The reason for being important.

Explanation of Solution

Hardness is the most essential material property for metal cutting tools. The cutting tools are used to machine different kinds of materials like silicon carbide, graphene, and many more, so the cutting tools must have the ability to withstand early failure and rapid wearing, which can only be achieved when the cutting tool is hard.

The most common tool materials are Tool steel, High-speed steel, and Titanium nitride coated high-speed steel. The tool is the alloy of carbon steel and medium alloy steel. It is having high hardness and good strength, but they lose their hardness at temperature 400°F . High-speed steel is superior then the tool steel because it withstands above the temperature 1100°F . The high-speed steel is fabricated by three methods casting, wrought, and powder metallurgy processes. Titanium nitride coated high-speed steel increases the cutting speed and having good hardness and toughness property. So the hardness is the important characteristic of the metal cutting tool.

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Chapter 22 Solutions

DeGarmo's Materials and Processes in Manufacturing

Ch. 22 - Prob. 11RQCh. 22 - Discuss the constraints in the selection of a...Ch. 22 - What does cemented mean in the manufacture of...Ch. 22 - What advantage do ground carbide inserts have over...Ch. 22 - What is a chip groove?Ch. 22 - What is the DCL?Ch. 22 - Suppose you made four beams out of carbide, HSS,...Ch. 22 - Multiple coats or layers are put on the carbide...Ch. 22 - What tool material would you recommend for...Ch. 22 - What makes the process that makes TiC coatings for...Ch. 22 - Why does a TiN-coated tool consume less power than...Ch. 22 - For what work material are CBN tools more commonly...Ch. 22 - Why is CBN better for machining steel than...Ch. 22 - What is the typical coefficient of variation for...Ch. 22 - What is meant by the statement Tool life is a...Ch. 22 - The typical value of a coefficient of variation in...Ch. 22 - Machinability is defined in many ways. Explain how...Ch. 22 - What are the chief functions of cutting fluids?Ch. 22 - Prob. 29RQCh. 22 - Why is the PVD process used to coat HSS tools?Ch. 22 - Why is there no universal cutting tool material?Ch. 22 - What is an 18-4-1 HSS composed of?Ch. 22 - Over the years, tool materials have been developed...Ch. 22 - Why is the rigidity of the machine tool an...Ch. 22 - Explain how it can be that the tool wears when it...Ch. 22 - What is a honed edge on a cutting tool and why is...Ch. 22 - Suppose you have a turning operation using a tool...Ch. 22 - A 2 in.-diameter bar of steel was turned at 284...Ch. 22 - Prob. 3PCh. 22 - The following data have been obtained for...Ch. 22 - In the insert is set with a 0 side cutting-edge...Ch. 22 - Prob. 6PCh. 22 - Here is a single point tool. Identify angles A...Ch. 22 - Figure 22.B gives data for cutting speed and tool...
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