Metal Works 2, Nov/Dec 2015

Question 4

 

 

(a)        State two suitable surface finishing processes for each of the following:

                        (i)         aluminium dishes;
(ii)        bicycle frames;

  1. mild steel litter bin.

            (b)        Sketch a doming mallet.

            (c)        State one uses each of the following tools:

                        (i)         Engineer’s square;
(ii)        half-round scraper;
(iii)       cross-cut chisel.

Observation

Most of the candidates who attempted this question could not provide the required responses to part (a).  The required responses to this part are given below:

(i)         Aluminium dishes
-           Anodizing;
-           Buffing;
-           Polishing.

(ii)        Bicycle frames

  • Electroplating;
  • Painting (spraying, brushing, dipping);
  • Enameling.

(iii)       Mild steel litter bins

    • Galvanishing;
    • Painting (spraying, brushing, dipping);
    • Electroplating;
    • Enameling.