When talking about cold rolling, there is no getting around the basic applications of the Duo and Quarto roller sets.
These systems are used both for rolling strips and for rolling wires.
Colloquially, a duo roll set refers to the rolling of material with the aid of a lower roll and an upper roll.
The dimensions of these rollers depend on the material to be rolled, the input dimensions and of course the target dimensions of the materials.
In the field of strips, these duo rolls are often also used for the first rolling passes for so-called roughing.
These rollers can be used, for example, in our machine series such as the FRM series and can also be exchanged with a Quarto roller set without any problems.
These quarto roller sets are often used after the roughing rollers and an annealing process and are used for finish rolling for fine tolerances and perfect surfaces.
The big difference to the Duo set is the use of 4 rolls. In this configuration, you have one work roll and one back-up roll on top and one set below the material.
However, these rollers do not have the same dimensions. The working rollers – which have direct contact with the material – are significantly smaller in diameter than the back-up rollers.
The smaller you can configure these work rolls, the better you can achieve corresponding tolerances and surfaces.
But these duo sets are also used for rolling in the wire sector. Both the reduction lines for pure round wire (RM) and the flat wire lines for the production of magnet wire (RMW) have flat rolls (duo sets) in combination with so-called upright stands.
As so-called standard technology, these duo roll sets are actually found in all cold rolling mills. INnerhlab of REDEX Group these are:
REDEX Group is a European Engineering company offering Mechatronics solutions worldwide.