Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Textbook Question
Chapter 22, Problem 5RQ
Cemented carbide tools are made by a powder metallurgy method? What is powder matallurgy?
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A cylinder of 25 mm diameter and 100 mm length is turned with a tool, for which the relation VT0.25 = 55 is applicable. The cutting velocity is 22 m/min. For a tool feed of 0.046 mm/rev, the number of tool regrinds required to produce 425 cylinders is?
11. Estimate the machining time required to rough turn a 0.5 m long annealed copper alloyRound bar from a 60 mm diameter to a 58 mm diameter, using a high-speed tool. Estimate the time required for an uncoated carbide tool.
In machining a mild steel work piece with carbide tool, the life of the tool was found to be 1 hour and 40 minutes, at a spindle speed of 25 m/min. Calculate the tool life if it has to be operated at a speed of 30% higher than the initial cutting speed. Also calculate the cutting speed if the tool is required to have a life of 2 hours and 45 minutes. Assume Taylor’s exponent value n is 0.28.
Chapter 22 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 22 - For metal-cutting tools, what is the most...Ch. 22 - What is hot hardness compared to hardness?Ch. 22 - Prob. 3RQCh. 22 - Why is impact strength an important property in...Ch. 22 - Cemented carbide tools are made by a powder...Ch. 22 - What are the primary considerations in tool...Ch. 22 - What is the general strategy behind coated tools?Ch. 22 - Prob. 8RQCh. 22 - How is a CBN tool manufactured?Ch. 22 - Prob. 10RQ
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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