Die lubrication

Die lubrication is a fundamental operation in hot forging.
During production, it aims at cleaning, lubricating and cooling the die improving the sliding of material and reducing surface wear.

The commonest lubricant is a mix of water and graphite. In contact with the hot piece, water evaporates creating a steam cloud that cools the die down. Thanks to its lubricant detaching properties, graphite creates a film on the die that lubricates its walls and favours the separation of the piece being extracted.

This process assures a better product machinability and protects the die, thus increasing its duration.