. function of a forge

. the parts of a forge and state their functions

. identify the forge tools and state their uses

The forge supplies heat for raising the temparature of the metal to be forged.

Parts of a forge and their uses

Hearth

The hearth is the main part where the heating of the metal takes place. It is prepared with refractory (fire) bricks and clay.


Tuyers

The forced air is sent through the tuyers to burn the fuel. The tuyer covered with refractory materials to avoid melting. The air also passes through a cooling tank.

Cooling tank

To keep the tuyer cool always, the cooling tank is filled with cold water.

Air valve

The air valve is used to regulate the supply of air to the hearth


Blower

The blower supplies air to the forge for burning the  coal or coke. The blowers are operated manually or by electric Power.

The blower is fixed independently to each forge or it supplies ait to a number of forges which are controlled by independent air valves.

Hood and chimney

Smoke and  dust are let out through the hood and the chimney. The fumes given off by a coal forge are toxic therefore, good ventilation is essential

Quenching tank

A quenching tank is provided along with the forge. It is filled with water for cooling the hit tools and workpieces. The tank is also used for hardening and Tempering

Coal tank

The coal tank is used for the storing of fuel for the forge. Generally solid fuels are used i.e coal, coke and charkol. Of these, steam coal with low sulphur is the best fuel for the forge. Hence it is known as Smith's fuel.

Forge tools


The SHOVEL is used to shovel coal and to clean the hearth. The RAKE AND POKER are used to remove clinkers from the fire, and to draw fresh fuel over the nozzle.

The SPRINKLER is used to localize the heat. The outer ring of the fire is kept wet so that the heat is concertrated in the middle of the hearth.