On the surface of a rolled plate it is possible to see structural lines left by the rollers. These lines determine the rolling direction. Considering the end use of the plates, there may be situations where it is appropriate to pay attention to the rolling direction.
Rolling direction definition
Here at Alumeco we use the following rolling direction definition: The rolling direction is parallel to the structural lines on the surface. This is demonstrated via the illustration above.
The rolling direction is important for the aesthetic appearance
As you can see in the following images, the rolling direction creates structural lines on the aluminium surface. In order to create a uniform look, it is therefore important, for example, to place rolled plates with the rolling direction pointing the same way. This way the finished plate structure has a superior, uniform appearance where structural lines follow each other.
Not only aesthetic but practical too
Knowledge of rolling direction does not have solely aesthetic benefits. During the machining of rolled aluminium, it is important to take the rolling direction into account. If, for example, aluminium bends the wrong way in relation to the rolling direction, there is a risk of breakage on the metal.
Example of rolling direction indications on sawn material
If you want to specify the rolling direction on the sawn material, in the example below it will be 300 mm.:
More photos about how to determine the rolling direction: