How Forging Is Done
A forge is a procedure wherein it makes use of different bituminous materials as fuels like industrial coke, coals, or charcoal. These are types of fuels used to heat metals. The designs have varied over time but it still uses the same fuel and the general designs remained the same. Generally speaking, a forge is a fireplace where fire can be controlled especially when metals are already introduced for the purpose of making them reach their malleable state. This is also a way wherein metallurgical effects occur like hardening, annealing, and drawing tampers. Essentially, this type of forging controls fire in three different manners: amount of air, shape of the fire or fuel, and volume of the fuel.
Forging is a process which has been practiced for thousands of years now and the devices have undergone transformations in one to another. Essential features of forging includes the tuyere which is a pipe that serves as the passage of forced air to the fire; bellows or blower which is a way to push the air into the tuyere; and hearth or firepot which is a place where the burning fuel can be contained over the opening of the tuyere.
During the process or the operation, fuel is placed in or on the firepot and ignited. A source of air comes to the hearth in a moving fashion (from fan or bellows) introduces additional air to the fire by means of the tuyere. By adding more air, the fire is triggered to consume more fuel, thus producing a higher temperature which is basically needed in the forging process. Now, for a blacksmith to suit a particular kind of work, he needs to balance the fuel and air in the fire, this is a procedure that mainly involves maintaining and adjusting the shape of the fire.
Typically, coal forge makes use of a firepot that is placed in the center of the flat hearth and the tuyere will proceed to the bottom part of the firepot. The center of the fire will then surrounded by hot but not burning coke. Around the unburnt coke is a transitional layer of coal that is then transformed into coke by means of the heat of the fire. Surrounding all is a kind of a ring or a horseshoe shaped raw coal layer which is usually kept damp. This is also maintained in a tight pack in order to maintain the shape of the fire’s heart and keeps the coal from burning directly so that it will be transformed into coke first.
As of these days, there are many individual smiths and specialized applications have had fostered development of a variety of forges of this particular type; from the coal forge mentioned above, to simpler constructions that amounts a hole in the ground with a particular pipe leading into it.
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