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 10RQ
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2 2 . 13 Explain the difference between M-series and T-series high-speed steels.
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(10) The lead screw of a lathe has a 2.0-in Acme thread, 2%2TPI. To drive the tool carriage, this screw
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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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- 1. A milling operation is to be performed on a ductile cast iron shaft to make slots for assembly. The operation will be done at high speeds for good surface finish. For each of the following tool materials, indicate whether it is a reasonable candidate to use in the operation with a detailed description of why or why not including required alloying element/grade/group etc. where applicable: ) plain carbon steel, (i) high-speed steel, (ii)cemented carbide, (iv) ceramic, and (v) Sintered polycrystalline diamond. After selection of material/materials discuss about ) recommended angles and tool signature (ii) how to held cutting edge, and type of cutting fluids With reasons for each recommended material.arrow_forward1. A milling operation is to be performed on a ductile cast iron shaft to make slots for assembly. The operation will be done at high speeds for good surface finish. For each of the following tool materials, indicate whether it is a reasonable candidate to use in the operation with a detailed description of why or why not including required alloying element/grade/group etc. where applicable: (i) plain carbon steel, (ii) high-speed steel, (iii) cemented carbide, (iv) ceramic, and (v) Sintered polycrystalline diamond. After selection of material/materials discuss about (i) recommended angles and tool signature (ii) how to held cutting edge, and type of cutting fluids With reasons for each recommended material. 2. Make a figure and explain how shear plane angle effect the power requirements in the machining. How can you reduce the power requirements during machining in orthogonal cutting?arrow_forward(10) The lead screw of a lathe has a 2.0-in Acme thread, 2½TPI. To drive the tool carriage, this screw must exert an axial force of 600lb. The thrust is carried on the collar 4½-in outside diameter & 2¼- in in inside diameter. The lead screw revolves 30rpm. Determine: (a) the efficiency of the screw & the collar, assuming ft = 0.15 & fc = 0.10 ; (b) the power to drive the screw.arrow_forward
- Select suitable material for hacksaw blades and explain the selection procedure for selecting suitable material for hacksaw blades?arrow_forwardIf the number of fatigue is smaller than the number of yield, would that be safe or not? and why? (In shaft) Prove this through explanation and calculationsPlease, I want a wonderful, correct and detailed reportarrow_forwardWhen does the Stress concentrations occur in shafts?arrow_forward
- Please solve question 2,3 and 13. Determine the % change in the machine time for an USM operation cutting WC plate when the tool material is changed from copper to stainless steel. Take ratio of flow stress of WC to flow stress of copper is 4.6 and the ratio of flow stress of WC to the flow stress of SST is 1.2.arrow_forwardQ3(a) Assuming you have been given the responsibility of procuring some cutting tool for UCSI workshop. Based on your knowledge in manufacturing processes, one of the major properties of interest in a cutting tool material is the hot hardness. Explain the relationship between the cost of a cutting tool and its hot hardness citing at least FOUR (4) examples of cutting tools.arrow_forward2. Given a plate that is 0.12 in thick and constructed from high carbon steel, 490 Brinell hardness, with a machined finish. Assume 95% reliability and an operating temperature of 250 °C. (Hint: to find a relationship between Brinell Hardness and ultimate tensile strength, see Chapter 3 of the textbook). a) Construct the log S- log N curve. b) The loading is completely reversed (o mean =0), and infinite life is desired. What alternating stress can be allowed with a safety factor of 2?arrow_forward
- 2.14 W hy is cBN generally preferred over diamond for machining steels?arrow_forwardA process engineer is trying to improve the life of a cutting tool. He has run a 23 experiment using (1) cutting speed, (2) metal hardness, (3) and cutting angle as the factors. The data from the 2 replicates are shown below. (a) Do any of the 3 factors affect tool life? (b)what combination of the factor levels produces the longest tool life? (c) Is there a combination of cutting speed and cutting angle that always gives good results regardless of metal hardness? Replicate Run I II (1) 221 311 a 325 435 b 354 348 ab 552 472 c 440 453 ac 406 377 bc 605 500 abc 392 419arrow_forwardI need answer within 20 minutes please please with my best wishesarrow_forward
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