Question 1

Which of the following are the three most important properties of a tool material that are suggested by the three modes of tool failure:

Accepted Answer

A) ductility 
B) hot hardness 
C) impact resistance 
D) tensile strength 
E) toughness
F)wear resistance 
A) ductility 
B) hot hardness 
C) impact resistance 
D) tensile strength 
E) toughness
F)wear resistance B, E, F

Question 2

Which one of the following materials has the highest hardness:

Accepted Answer

A) aluminum oxide 
B) cubic boron nitride 
C) high-speed steel 
D) titanium carbide 
E) tungsten carbide 
A) aluminum oxide 
B) cubic boron nitride 
C) high-speed steel 
D) titanium carbide 
E) tungsten carbide B

Question 3

Steel-cutting grades of cemented carbide are typically characterized by which of the following ingredients (three correct answers):

Accepted Answer

A) Co 
B) CrC 
C) Mo 
D) Ni 
E) TiC
F)WC 
A) Co 
B) CrC 
C) Mo 
D) Ni 
E) TiC
F)WC A, E, F

Question 4

Which of the following is not a common ingredient in cemented carbide cutting tools (two correct answers):

Accepted Answer

A) Al2O3 
B) Co 
C) CrC 
D) TiC 
E) WC 
A) Al2O3 
B) Co 
C) CrC 
D) TiC 
E) WC

Question 5

As an alloying ingredient in high-speed steel, tungsten serves which of the following functions (two best answers):

Accepted Answer

A) depth hardenability during heat treatment 
B) forms hard carbides to resist abrasion 
C) improves strength and hardness 
D) increases corrosion resistance 
E) increases hot hardness
F)increases toughness 
A) depth hardenability during heat treatment 
B) forms hard carbides to resist abrasion 
C) improves strength and hardness 
D) increases corrosion resistance 
E) increases hot hardness
F)increases toughness

Question 6

The basic Taylor tool life equation defines the relationship between which two of the following variables:

Accepted Answer

A) cutting speed 
B) depth of cut 
C) feed 
D) feed rate 
E) tool life
F)work material hardness 
A) cutting speed 
B) depth of cut 
C) feed 
D) feed rate 
E) tool life
F)work material hardness

Question 7

Most ceramic cutting tools are fabricated from which one of the following materials:

Accepted Answer

A) aluminum oxide 
B) cubic boron nitride 
C) titanium carbide 
D) titanium nitride 
E) tungsten carbide 
A) aluminum oxide 
B) cubic boron nitride 
C) titanium carbide 
D) titanium nitride 
E) tungsten carbide

Question 8

As an alloying ingredient in high-speed steel, chromium serves which of the following functions (three best answers):

Accepted Answer

A) depth hardenability during heat treatment 
B) forms hard carbides to resist abrasion 
C) improves strength and hardness 
D) increases corrosion resistance 
E) increases hot hardness
F)increases toughness 
A) depth hardenability during heat treatment 
B) forms hard carbides to resist abrasion 
C) improves strength and hardness 
D) increases corrosion resistance 
E) increases hot hardness
F)increases toughness

Question 9

Which of the following drill types would be the most likely choice to drill a hole with a 100 mm (4.0 in) diameter (one best answer):

Accepted Answer

A) gun drill 
B) spade drill 
C) straight-flute drill 
D) twist drill 
A) gun drill 
B) spade drill 
C) straight-flute drill 
D) twist drill

Question 10

Which of the following are the two main types of gradual wear on a cutting tool:

Accepted Answer

A) clearance wear 
B) crater wear 
C) flank wear 
D) nose wear 
E) notch wear 
A) clearance wear 
B) crater wear 
C) flank wear 
D) nose wear 
E) notch wear

Question 11

If you had to select a cemented carbide for an application involving finish turning of steel, which C-grade would you select (one best answer):

Accepted Answer

A) C1 
B) C3 
C) C5 
D) C7 
A) C1 
B) C3 
C) C5 
D) C7

Question 12

Chip breakers are frequently used with single-point tools.They work by forcing the chips to curl more tightly than they would naturally be inclined to curl, thus causing them to fracture:

Accepted Answer

A) True 
 B)False

Question 13

Of the following cutting conditions, which one has the greatest effect on tool wear:

Accepted Answer

A) cutting speed 
B) depth of cut 
C) feed 
A) cutting speed 
B) depth of cut 
C) feed

Question 14

Sialon is a cutting tool material containing which of the following as its principal ingredients (two correct answers):

Accepted Answer

A) aluminum oxide 
B) cubic boron nitride 
C) silicon carbide 
D) silicon nitride 
E) titanium nitride
F)tungsten carbide 
A) aluminum oxide 
B) cubic boron nitride 
C) silicon carbide 
D) silicon nitride 
E) titanium nitride
F)tungsten carbide

Question 15

An increase in cobalt content has which of the following effects on WC-Co cemented carbides (two best answers):

Accepted Answer

A) decreases hardness 
B) decreases transverse rupture strength 
C) increases hardness 
D) increases toughness 
E) increases wear resistance 
A) decreases hardness 
B) decreases transverse rupture strength 
C) increases hardness 
D) increases toughness 
E) increases wear resistance

Question 16

Cast cobalt alloys typically contain which of the following as their main ingredients (three best answers):

Accepted Answer

A) aluminum 
B) cobalt 
C) chromium 
D) iron 
E) nickel
F)steel
G)tungsten 
A) aluminum 
B) cobalt 
C) chromium 
D) iron 
E) nickel
F)steel
G)tungsten

Question 17

Which of the following are the two main functions of a cutting fluid in machining (two best answers):

Accepted Answer

A) improve surface finish on the workpiece 
B) reduce forces and power 
C) reduce friction at the tool chip interface 
D) remove heat from the process 
E) wash away chips 
A) improve surface finish on the workpiece 
B) reduce forces and power 
C) reduce friction at the tool chip interface 
D) remove heat from the process 
E) wash away chips

Question 18

How many elements of tool geometry are required to completely specify a single-point tool (one correct answer):

Accepted Answer

A) two 
B) five 
C) seven 
D) eight 
E) ten 
A) two 
B) five 
C) seven 
D) eight 
E) ten

Question 19

Which of the following processes are used to provide very thin coatings on the surface of coated carbide inserts (two best answers):

Accepted Answer

A) chemical vapor deposition 
B) electroplating 
C) physical vapor deposition 
D) pressing and sintering 
E) spray painting 
A) chemical vapor deposition 
B) electroplating 
C) physical vapor deposition 
D) pressing and sintering 
E) spray painting

Question 20

Of the three possible modes by which a cutting tool can fail during a machining operation, which one is most preferable:

Accepted Answer

A) fracture failure 
B) gradual wear 
C) temperature failure 
A) fracture failure 
B) gradual wear 
C) temperature failure

Exam 19: Cutting Tool Technology

Which of the following are the three most important properties of a tool material that are suggested by the three modes of tool failure:

Which one of the following materials has the highest hardness:

Steel-cutting grades of cemented carbide are typically characterized by which of the following ingredients (three correct answers):

Which of the following is not a common ingredient in cemented carbide cutting tools (two correct answers):

As an alloying ingredient in high-speed steel, tungsten serves which of the following functions (two best answers):

The basic Taylor tool life equation defines the relationship between which two of the following variables:

Most ceramic cutting tools are fabricated from which one of the following materials:

As an alloying ingredient in high-speed steel, chromium serves which of the following functions (three best answers):

Which of the following drill types would be the most likely choice to drill a hole with a 100 mm (4.0 in) diameter (one best answer):

Which of the following are the two main types of gradual wear on a cutting tool:

If you had to select a cemented carbide for an application involving finish turning of steel, which C-grade would you select (one best answer):

Chip breakers are frequently used with single-point tools.They work by forcing the chips to curl more tightly than they would naturally be inclined to curl, thus causing them to fracture:

Of the following cutting conditions, which one has the greatest effect on tool wear:

Sialon is a cutting tool material containing which of the following as its principal ingredients (two correct answers):

An increase in cobalt content has which of the following effects on WC-Co cemented carbides (two best answers):

Cast cobalt alloys typically contain which of the following as their main ingredients (three best answers):

Which of the following are the two main functions of a cutting fluid in machining (two best answers):

How many elements of tool geometry are required to completely specify a single-point tool (one correct answer):

Which of the following processes are used to provide very thin coatings on the surface of coated carbide inserts (two best answers):

Of the three possible modes by which a cutting tool can fail during a machining operation, which one is most preferable:

Introduction and Overview of Manufacturing

The Nature of Materials

Mechanical Properties of Materials

Physical Properties of Materials

Engineering Materials

Dimensions, Surfaces, and Their Measurement

Fundamentals of Metal Casting

Metal Casting Processes

Glassworking

Shaping Processes for Plastics

Processing of Polymer Matrix Composites and Rubber

Powder Metallurgy

Processing of Ceramics and Cermets

Fundamentals of Metal Forming

Bulk Deformation Processes in Metal Workiing

Sheet Metalworking

Theory of Metal Machining

Machining Operations and Machine Tools

Economic and Product Design Considerations

Grinding and Other Abrasive Processes

Nontraditional Machining and Thermal Cutting

Heat Treatment of Metals

Surface Processing Operations

Fundamentals of Welding

Welding Processes

Brazing, Soldering, and Adhesive Bonding

Mechanical Assembly

Rapid Prototyping and Additive Manufacturing

Processing of Integrated Circuits

Electronics Assembly and Packaging

Microfabrication Technologies

Nanofabrication Technologies

Automation Technologies for Manufacturing Systems

Integrated Manufacturing Systems

Process Planning and Production Control

Quality Control and Inspection

Filters