| Rolling is the processing of reducing
the cross section or thickness between rolls and
the purpose of the rolling is to provide equal and
excellent quality by destroying casting structure
along with molding and compressing air bubble in
the material.
This rolling of metal material is divided into
hot rolling which is conducted in the above the
recrystallization temperature of metal and cold
rolling which is conducted in the below recrystallization
temperature. In case of hot rolling, when processed,
a huge amount of water is used for roll cooling,
but recently lubricant is provided to prevent
the wear of the roll.
In case of cold rolling, that are used for the
purpose of lubrication and cooling between rolls
and rolling material.
These rolling is vary according to the material,
rolling condition, the work efficiency and product
quality of each rolling which greatly depend on
whether suitable rolling oil is used.
Especially, these days, high quality of rolling
oil is widely required by the improvement of rolling
oil technology, and high quality of the product
and the change of the rolling oil processing.
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