cameroon gce intermediate level material science and processes 2
cameroon gce intermediate level material science and processes 2
Explain the following designations: C 35; 10 Ni Cr 6; EN-GJN450-10. (2 marks)
b) Let‘s suppose that the designation 10 Ni Cr 6 is a stainless steel,
i) Define stainless steels. (2 marks)
ii) Give an industrial application of a stainless steel. (2 marks)
c) Let’s consider that study carried out is with the metal Cu Ni12 Zn6.
i) Give the name of this metal. (2 marks)
ii) Give its base metal and the different additional elements. (2 marks)
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3. In order to improve the production rate of the wheel shaft in figure 2 below, the rough piece is obtained from
sand moulding.
Figure 2
a) Draw and label the parts of the mould ready for use. (5 marks )
b) Sketch the piece obtained from the moulding. (2 marks)
c) Give two benefits and two inconveniences of using sand mould
