Module 3 - Heat treatment of metals

Which of the metal contains iron?

• Non- ferrous metals

• Non- ferrous metal

  alloys

• Ferrous metals

• Bronze

Which of the metal does not contain Iron?

• Ferrous metal

• Ferrous metal alloys

• Pig iron

• Non-Ferrous metal

What is the process of changing the

structure and properties of steel by heating

and cooling?

• Heat treatement of

  steel

• Austenite

• Martensite

• Cementite

Which instrument is used for observing

visible exact grain size and structure of

broken metal?

• Power glass

• Microscope

• Lens

• Reading glass

What is the process of heat treartment to

add the cutting ability to steel?

• Tempering

• Annealing

• Hardning

• Normalising

What is the process of heat treatment to

remove the brittleness of hard metal?

• Hardening

• Annealing

• Normalising

• Tempering

What is the property of quenching oil used in

heat treatment process for steels?

• Low viscosity

• High viscosity

• Corrosive

• Emulsification

What is the process of heat treatment to

improve the machinability of steel?

• Normalising

• Annealing

• Hardening

• Tempering

What is the process of heat treatment to

remove stress and strain formed in the

internal structure of steel due to repeated

heating?

• Annealing

• Hardening

• Normalising

• Tempering

What is the process of heat treatment for

components to have hard wear resisting

surface and shock resisting core for better

service conditions and longer life?

• Annealing

• Normalising

• Hardening

• Surface hardening