The manufacturing processes related to plastic buckling are placed soon after the steel production phase. This type of process does not remove any parts of the product but it gives the material a new shape.

The main manufacturing processes related to plastic buckling are:

• Rolling
• Forging and Pressing
• Extrusion
• Drawing

Rolling:

The objective of the process is to permanently deform the metal (plastic deformation).

The result can be obtained through hot or cold rolling.

In both cases the metal is passed through two or more pairs of rollers that modify the dimension and the structure of the material.

The roller or the cylinder whose name depends on the application (rough-hewer, roughing rolls, finishing rolls, work rolls, supporting rolls, intermediate rolls, etc.) are subjected to very high radial loads, axial loads, adjustments, shocks, axial expansions, extremely high temperatures and rotation speeds. The bearings used to support these cylinders are designed in order to keep into consideration all of the above mentioned aspects.

Forgin and pressing:

The objective of forging and pressing is to deform the metal (plastic deformation) through hot and compression deformation processes.

High dimension bearings are used in this type of machines (hammers and presses). They are employed in lift systems, material handling systems and in rod-crankshaft systems.

Extrusion:

This manufacturing process deforms the metal (plastic deformation) by means of hot and compression deformation processes. It forces the metal, that resides in a cylindrical container, to flow through a specific hole in the die (matrix).

Either cold or hot extrusion processes are made by means of presses similar to those used for pressing

Another type of interesting bearings can be used in the double screw extruders.

Drawing:

This process is very similar to extrusion. It is, generally, a cold and traction deformation process.

The metal section is reduced by forcing it through serialized threading dies (extrusion matrix)

The thread passes through specific supports and it is pulled by a winding roller on each threading die.

At the end of the drawing process the thread is wrapped in hanks by a winding drum.

Important bearings are used in the winding rollers and in the drum at bench end.

Used bearings: