Machinist Grinder 4th Sem - NSQF - Module 5 : Lapping and Honing

What is name of Lapping tool?

• Round lap

• Adjustable ring lap

• Internal laps

• Machine lap

Which abrasive is used for lapping hardened steel and cast irons?

• Diamond
• Silicon carbide
• Aluminium carbide
• Boron carbide

Which abrasive is used for lapping small holes?

• Rotary diamond
• Boron carbide
• Silicon carbide
• Aluminium carbide

Where rotary diamond laps is used?

• Drilled holes
• Boring holes
• Flat surfaces
• Very small holes

What is the role of lapping lubricant?

• To helps adhesive
• Hold the work
• Regulating the cutting action
• Help to separate the work

Which substances are used for wet lapping?

• Oil and Abrasives
• Abrasive
• Oil
• Abrasive and Water

What is the type of lapping?

• Hand lapping

• Wet lapping

• Machine lapping

• Dry lapping

Which type of laps are used for producing flat surface?

• Internal laps
• External laps
• Rotary laps
• Flat laps

Which lapping abrasives are used for soft steel?

• Silicon carbide
• Boren carbide
• Aluminium oxide
• Diamond

Which lapping vehicles are used for non-ferrous metal?

• Vegetable oil
• Machine oil
• Petroleum jelly
• Soluble oil