gce 2022 intermediate level international material technology and workshop process 2
gce 2022 intermediate level international material technology and workshop process 2
SECTION A
MATERIALS TECHNOLOGY
Answer any three (03) questions from this section
1. PRODUCTION OF IRON AND ITS APPLICATION
In not more than five (05) lines,
a. Explain the process of obtaining pig iron. (3.5 marks)
b. Name THREE types of cast iron.
c. Reproduce the table below and fill the spaces by giving the appropriate material of the vehicle components.
(3 marks
2. MANUFACTURING PROCESSES
! ‘ .
Casting is the act of pouring molten metal into a refractory’ mould cavity and allowing it to solidify.
a. Name TWO types of casting processes.
b. Give the name of one automobile part that is obtained by casting.
c. Give TWO precautions when carrying out casting process.
d. Define forging.
e. Give TWO advantages of forging a component over casting.
(Ix2=2mark )
(2 marks)
(1.5×2=3marks)
(lmark)
(2marks)
3. STANDARD DESIGNATION AND TESTING OF MATERIALS
a. Explain the follow ing designations
i. EN-GJL 150,
ii. E295, C45,
iii. 36Ni Mo 14
b. Define hardening.
c. Justify why 36Ni MoI4 presents good corrosion resistance characteristics.
d. List TWO (2) materials that can resist penetration and two that can resist shock.
(Ix3=3marks)
(lmark )
(2marks)
(lx4=4marks)
4. CLASSIFICATION AND PROPERTIES OF MATERIALS
a. Draw a block diagram to explain the classification of engineering materials.
b. Give FOUR factors that qualify a material for engineering application.
c. Explain the following:
i. Machinability,
ii. Hardness,
iii. Weldabiltv,
iv. Ductility and
v. Brittleness
