MT UNIT I Cutting tool material &Tool wear

What is the most common material used to make cutting tools?

• Steel

• Copper

• Tungsten

• Carbon

Which material is best for high-speed cutting applications?

• Steel

• Copper

• Tungsten

• Carbon

What is the main advantage of using carbide as a cutting tool material?

• Low cost

• High toughness

• High hardness

• High wear resistance

Why are multi-layer coatings used on cutting tools?

• To improve hardness

• To improve wear resistance

• To improve toughness

• To improve all of the above

What is a common alternative to carbide cutting tools for machining titanium alloys?

• Ceramics Coated high-speed steel

• Uncoated high-speed steel

• Cobalt-bonded

• carbide

What is tool wear?

• A type of tool damage

• An increase in cutting speed

• A decrease in cutting speed

• An increase in cutting force

What is the main cause of tool wear?

• Improper tool selection

• Improper cutting speed

• Improper cutting force

• Improper chip formation

What can be done to reduce the occurrence of fretting wear?

• Proper cutting speed

• Proper cutting force

• Proper tool material  

• Proper cutting fluid