ASSEMBLY - Quiz

1) What is the purpose of hardening?

Refine the structure Increase toughness Increase cutting ability Relieve stress and strain

2) Which method of heat treatment to improve machinability and ductility in the job?

Annealing Hardening Tempering Normalizing

3) What is the disadvantage of flame hardening in the heat treatment process?

More distortion Long hardening time Small depth of hardening Not suitable for small workpieces

4) What is the name of method in metallic coating done by rolling or drawing the layers of metal on the base metal?

Spraying Cladding Enameling Molten metal bath

5) Which type of key used if the hub of pulley has to axially slide on the shaft to some distance?

Feather key Flat saddle key Circular taper key Hallow saddle key