Abstract
In the early days, it was common for a blacksmith’s apprentice to use their lungs to blow air into a hollow tube, directly into the base of the fire. This method was not very effective as the majority of the oxygen they inhaled would get absorbed by the lungs, and the exhalation contained a lot of carbon dioxide which did not help the fire. Not only that – heavy breathing would quickly make apprentices dizzy from hyperventilation and could result in them passing out. Many apprentices would have begun their training before the age of ten. Life was tough for a blacksmith apprentice in those days, for sure. This was not an effective method. It was this reason that forge blower was introduced. The blower was designed to convert driver energy to kinetic energy by accelerating it to the outer rim of the impeller and the impeller driven by the connecting shaft adds the velocity component to the air by centrifugally casting the air away from the impeller vane tips.
CHAPTER ONE
1.1 INTRODUCTION
A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located. The forge is used by the smith to heat a piece of metal to a temperature where it becomes easier to shape by forging, or to the point where work hardening no longer occurs. The metal (known as the "workpiece") is transported to and from the forge using tongs, which are also used to hold the workpiece on the smithy's anvil while the smith works it with a hammer. Sometimes such as when hardening steel or cooling the work so that it may be handled with bare hands; the workpiece is transported to the slack tub, which rapidly cools the workpiece in a large body of water.
Portable forge blower delivers consistent air supply to the base of the fire to aid the combustion process. Supplying the fire with oxygen means that the fire can get to a temperature hot enough to manipulate and craft iron.
1.1 OBJECTIVE OF THE PROJECT
The objective of the project is to fabricate a portable and movable mechanical device that is used to produce consistent air supply to the base of the fire to aid the combustion process.
1.2 SIGNIFICANCE OF THE PROJECT
The forge blower is one of the most important and portable tools in a blacksmith’s workshop. The function of the blower is to deliver a consistent air supply to the base of the fire to aid the combustion process. Supplying the fire with oxygen means that the fire can get to a temperature hot enough to manipulate and craft iron objects – without a consistent supply of oxygen, this task is nearly impossible.
1.3 APPLICATION OF MOBILE FORGE BLOWER
This work is used for local and industrial use for shaping or bending of metal. Mobile forge blower is one of the most important and portable tools in a blacksmith’s workshop.
1.4 SCOPE OF THE PROJECT
In the early days, it was common for a blacksmith’s apprentice to use their lungs to blow air into a hollow tube, directly into the base of the fire. This method was not very effective as the majority of the oxygen they inhaled would get absorbed by the lungs, and the exhalation contained a lot of carbon dioxide which did not help the fire. This was not an effective method. It was this reason that forge blower was introduced. The blower was designed to convert driver energy to kinetic energy by accelerating it to the outer rim of the impeller and the impeller driven by the connecting shaft adds the velocity component to the air by centrifugally casting the air away from the impeller vane tips.
Parts produced by forging are stronger than casted or machined parts. During the forging process the internal grain of the part changes its form and continuous forging for a few minutes strengthens the part's characteristics.
1.5 LIMITATION OF THE PROJECT
- Forge blower prevents work hardening and hence increases the difficulty of performing other machining operations on the part.
- Producing forged parts involves a lot of expenditure for the machinery, dies, tools and personnel.
- Some forging requires metal-forming dies, which are required to be precisely machined and heated to properly shape the piece. This is not always achievable by novices or not very-high experienced engineers.
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