How To Bend Flat Bar
The reason as to why flat bar is so versatile is because it's easy to bend. Flat bars can be made into angular iron. This is when the flat bar has been hot rolled and bent into a 90 degree right angle down the centre creating angle bar. Angle bar is another versatile material perfect for constructing with.
To bend a strip of steel bar, it get's put through a process called hot-rolling process. This is a technique where the strip of steel bar gets heated to a very high temperature of typically around 926 degrees Celsius so that it becomes malleable. It's then inserted into a heated mill and gets rolled down the centre until it forms the necessary angle. It's then left to cool to room temperature.
There is also another method called the cold rolling process, it's practically the same as the hot rolling process however the metal isn't initially heated. The metal is instead rolled at room temperature, this method however is more expensive and labour-intensive as it's much more time consuming to bend the metal.
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