Assignments

Class: HE11¹                        Subject: Mechanical Engineering Technology

Assignment 1: Properties of metals

Due Date: March 31, 2015

1.       Define the following properties of metals:

              a)      Malleability

              b)      Tenacity

              c)       Ductility

              d)      Hardness

              e)      Toughness

              f)       Brittleness              

              g)      Elasticity

              h)      Machinability

              i)        Corrosion resistant

              j)        Strength

                                             i.      Compressive

                                           ii.      Tensile

                                          iii.      Shear

2.       Explain the following metal treatment processes:

             a)      Hardening

             b)      Case Hardening   

             c)       Quenching

             d)      Tempering

             e)      Annealing

             f)       Normalizing

             g)      Spherodizing

3.       Discuss electroplating and state its purposes.

4.       Explain the following processes:

            a)      Galvanizing

            b)      Copper plating

            c)       Terneplating

            d)      Anodizing

Assignment 2: Production of Ferrous Metals

Due: April 14, 2015

1.       Explain what are ferrous metals.

2.       Explain how the following ferrous metals are manufactured:

            a)      Pig iron

            b)      Cast iron

c          c)       Plain Carbon steel

3.       Also give the furnaces used in the manufacture of each metal above.

4.       What are the types of ores used in the production of pig iron.

5.       Give the countries where each type of ore can be found.

6.       Give the percentage iron content in each type of ore.

7.       Explain  how steel is made in the following furnaces:   

             a)      Bessemer converter

             b)      Open hearth furnace

             c)       Electric Arc furnace

8.       State the carbon content and uses of

            a)      Low carbon steel

            b)      High carbon steel