For WW2 tank armour, what about the “rolling” that made the steel better than cast armour hardened armour and how… do you roll a steel plate?

Question

I’m familiar with the use of rollers to make glass panes but surely it’s not that?

In: Engineering

Answer 1

Rolling isn’t the specific point to worry about. Rolling works just like you think. For steel it can be either hot or cold.

if it is done hot you get rolled homogenous armor (Rha)

the important part is the homogenous part. That means that all the grains are oriented in any and all directions.

this leaves it soft enough not to shatter when hit by a shell.

from what I understand Rra will be about 10% thinner than cast armor