Hot Working Processes Quiz

Hot working is a metal forming process carried out:

• Below recrystallization temperature

• At room temperature

• Above recrystallization temperature

• At freezing temperature

One of the main advantages of hot working is:

• Produces rough surface

• Reduces ductility

• Improves grain structure and mechanical properties

• Reduces temperature of metal

Which of the following is not an advantage of hot working?

• No residual stress

• Low power requirement

• Improved ductility

• Grain refinement

In hot working, the metal is:

• Strained above melting point

• Crystallized during deformation

• Hardened by cold working

• Always cast first

Rolling is a type of:

• Joining process

• Heat treatment

• Hot working process

• Casting process

In forging, the operation where metal is shaped by repeated blows of hammer is called:

• Drop forging

• Press forging

• Hammer or Smith forging

• Upset forging

Drop forging is characterized by:

• Constant load application

• Rolling between dies

• Sudden impact by falling hammer

• Heating and quenching

Upset forging increases the:

• Length of workpiece

• Width of workpiece

• Diameter or cross-section by reducing length

• Internal porosity

Press forging differs from drop forging because it:

• Uses high-speed hammering

• Applies gradual pressure

• Is done cold

• Requires no dies

Which type of forging is best suited for high-volume, high-precision parts?

• Hand forging

• Drop forging

• Upset forging

• Press forging