Heat Treatment

Question 1

Normalised steel is heated to 900 degrees , it is then allowed to -

A) cool as quickly as possible by quenching in water or oil

B) in a furnace

C) cool in air to ambient temperature

Answer 1

Brings back strength and toughness !

C) cool in air to ambient temperature

Question 2

Normalised steel optimises -

A) optimises strength and toughness

B) softened to improveductility

C) prevent carbides

D) reduces strength and toughness , but improves ductility

Answer 2

Brings back strength and toughness

A) optimises strength and toughness

Question 3

Quenched and tempered steel, Heated to 900 degrees -

A) cool in air to ambient temperature

B) cooled quickly as possible by quenching in oil and water

C) rapidly cooled by quenching in water to prevent carbides

D) cool in furnace

Answer 3

B) cooled quickly as possible by quenching in oil and water

Question 4

Solution Annealed / heat treatment , heated to 1100 degrees and

A) cooled in air

B) rapidly cooled by quenched in water to prevent carbides

C) cooled quickly as possible by quenching in water or oil

D) cooled in furnace to ambient temperature

Answer 4

Reverses weld decay .

B) rapidly cooled by quenched in water to prevent carbides

Question 5

Annealed is heated to 900 degrees ,

A) rapidly cooled by quenching in water
B) cooled quickly as possible by quenching oil or water
C) cooled in air to ambient temperature
D) cooled in furnace to ambient temperature

Answer 5

Reverses the effect of cold working

D) cooled in furnace to ambient temperature

Question 6

Quenched and tempered gives the steel -

A) softened and improved ductility
B) strength and toughness
C) prevent carbides
D) reduce strength and toughness but improves ductility

Answer 6

A) softened and improved ductility

Question 7

Annealed improves the steel by

A) prevents carbides
B) softens and improves ductility
C) optimises strength and toughness
D) reduce strength and toughness but improves ductility

Answer 7

D) reduce strength and toughness but improves ductility

Question 8

Solution annealed improves the steel -

A) softened and improved ductility
B) strength and toughness
C) prevent carbides
D) reduce strength and toughness but improves ductility

Answer 8

C) prevent carbides