help me!!! what advantages and disadvantages in rolling process?

Answer 1

I think you are referring to metal rolling.
Rolling is a fabricating process in which the metal, plastic, paper, glass, etc. is passed through a pair of rolls. There are two types of rolling process, flat and profile rolling. In flat rolling the final shape of the product is either classed as sheet (typically thickness less than 3 mm, also called "strip") or plate (typically thickness more than 3 mm). In profile rolling, the final product may be a round rod or other shaped bar such as a structural section (beam, channel, joist etc). Rolling is also classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallisation temperature then the process is termed as hot rolling, If the temperature of metal is below its recrystallisation temperature the process is termed as cold rolling.
May i now request you to give some more data so that the question can be accurately answered.