CHAPTER ONE
1.0 INTRODUCTION
Aluminium
pots are made from Aluminium scap. The shape of the Aluminium pots yard
according to the purpose for which they are produced.
Hence
there are various shapes of Aluminium pot such as cylindrical flat bottom pots
spherical bowel pots e.t.c. In some cases means of production of the pots also
determine their shapes.
The
pots being reported on are spherical bowel pots and circular called the mouth
joined together with a narrower neck. They also possess two EAR-LIKES Handle
used. For lifting when loaded. The mouth is covered with a circular lead having
a handle as its center.
The
cast aluminum pot serves several
functions its versatility accounts
for its popularity in many local villages,
households where it serves as the primary family cooking utensil, Normally it
is suspended from a tripod itself is typically constructed of 75mm diameter
tree limbs about two mm long.
Prior
to the usual of an aluminum reduction plant operation in the country. Local
residents used pots made of Aluminum, which came from a distant place. It did
not take long for the local entrepreneur to determine that a similar pot made
of aluminum was much lighter, had much better heat transfer characteristic, and
provided an improved and uniform thermal dispersion into the substance being
cooked. These attributes are important
economics consideration where fuel is both scarce and expensive.
It
is some what ironic that the formerly discarded and displaced cast iron pots are
used as the pattern for the sand moulds made for casting the aluminium. Such a cast iron pot used for pattern
purposes is visible, which shows the
sand mould being prepared.
The
major aspect in preparation of aluminum cooking pot include preparation of
sand, melting and pouring of the molten and finally into already prepared mould
and finally the removal of the solicited casting from the sand and its
dressing. After the metal had been poured the end product of the foundry
operation is known as casting and may vary from a fraction of a kilogram to
several tones. Various materials used in the furnace for the production of .aluminum
cooking pot includes the materials that `can withstand very high temperature
without causing any damage by heating. This materials as called refractory
material such as crucibles used in the melting of aluminum scraps. Its should
posses properties such as high mechanical strength and chemical stability at
elevated temperature so as to withdraw the action of metabolic melt oxide slag and fluxes.
The
major aspect of preparation of aluminum cooking pot includes preparation of
sand, melting.
Fire
clay has sufficient mechanical strength and chemically stable to be used as a
lining materials in furnaces for melting of aluminum scraps.
Fluxes are
also added during melting of metal inform and control the composition of slag
with the required physical and chemical
characteristics of the slag. Parting powder is also added to separate a
content of moulding flask or boxes from one another. Surface dressing powder
mould against the action of the molten metal and to help to produce good
surface on casting.
Surface
dressing powder used in the casting of aluminum cooking pot is talc, plumb ago
and coal dust can also be used.