Materials

Question 1

What is iron ore used for?

Question 2

List 3 important iron ore types

Question 3

Describe how iron ore is manufactured?

Question 4

What are volatiles?

Question 5

what is sinter?

Answer 5

solid material which has been sintered

Question 6

what is coke?

Question 7

define the term flux?

Question 8

with reference to iron blast furnaces what is meant by tuyeres?

Question 9

what are the reactions which take place in a blast furnace?

Question 10

with reference to iron production what is tapping?

Question 11

Define the term pig iron?

Question 12

what is strain - aging?

Question 13

what is the principle difference between the open hearth and the Bessemer steels?

Question 14

what are the typical nitrogen contents of bessemer steel and open hearth steel?

Question 15

with reference to converting iron to steel describe the Bessemer process?

Question 16

Describe the open hearth process?

Question 17

what chemical is CO?

Answer 17

carbon monoxide

Question 18

List 4 modern steel making processes

Question 19

Describe the L.D. (Linz Donawitz) method of steel manufacture with the aid of a sketch?

Question 20

Describe the Kaldo Steel manufacture process?

Question 21

Describe the Rotor Steel manufacture process?

Question 22

Describe the BOP (basic oxygen process for steel manufacture

Question 23

Describe what is meant by the Acid and basic process used in open hearth, Bessemer, L.D and EAF steel and iron manufacturing?

Question 24

describe the EAF (electric arc furnace)?

Question 25

define the term metallurgy?

Question 26

define amorphous carbon and pure carbon form?

Question 27

Describe the metallurgy of iron and the effect of adding carbon to it?

Question 28

Define the following types of steel killed steel semi killed steel rimmed steel

Question 29

How is a material chosen?

Question 30

Define the term Alloy?

Question 31

Give 4 examples of things that need to be considered at design stage by the engineer?

Question 32

what does a hardness test determine?

Question 33

what is transition temperature?

Question 34

define Brittle fracture?

Answer 34

Brittle fracture is the sudden or rapid fracture of a component under stress, but without undergoing any appreciable permanent deformation or ductility.

Question 35

what factors effect transition temperature?

Question 36

define the term creep?

Question 37

why is a creep test important?