Metal Working: History, Progress, Importance, Techniques, Application In Everyday Life

Metals are everywhere. Our appliances at our homes, the furniture in our workplaces, and the any other structures that we see each time we go outside, all of those things are entirely or partly made of metal. This just goes to show how big of a part metals play in our everyday life.

The process of metal working started a lots of years ago. Even pre-historic men are supposed to have practiced this method. Even if it's a little bit difficult to trace how exactly metal working started, maybe we can all agree that it predates history. Imagine how life it would be like for the ancient men if they didn't have metallic equipments to use for their cooking, hunting, and other activities. They were able to create sharp instruments and knives out of pieces of rocks and metals. Since then, the whole thing has evolved into something more sophisticated.

Usually, there're 3 different types of metal working. They are cutting, joining and forming. Each of these 3 processes even has smaller processes categorized under them.

1. Forming - this is done to deform or modify an object by applying pressure, heat, or mechanical force. There're various kinds of forming processes and many of them are: plastic deforming, casting, and sheet metal forming. Under sheet metal forming, you will get bending, roll forming, spinning, drawing, rolling, stamping, shearing, raising and decambering.

2. Cutting - this is done by removing some part of a material to modify its physical look. The material would generally be cut into 2 pieces, the waste part and the finished part. Cutting has several sub-processes together with machining, burning, drilling, threading, turning, grinding, and filing.

3. Joining - examples of joining operations are brazing, soldering and welding. In brazing, you would need to melt a filler metal and turn it into a capillary to assemble minimum 2 work pieces. When the filler metal comes into contact with the work pieces, it would harden and make a hard and powerful joint. It is almost the same as soldering, but the previous is done at temperature more than 450 degrees Celsius. Soldering is done at temperatures less than 450 degrees Celsius. In welding, materials are joined by thermoplastics or metals. The work pieces are melted and are therefore added to the filler substance so that some kind of a molten material pool is formed. This would then be left to cool to form a sturdy joint.

Metal Working: History, Progress, Importance, Techniques, Application In Everyday Life
Metals are everywhere. Our appliances at our homes, the furniture in our offices, and the other structures that we see every time we go outdoors, all of these things are totally or partly made of metal.

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