What role does a forging lubricant play in surface defects?
Forging lubricant provides a thin layer of film that prevents rough contact between the forging and die surface. Thanks to their hexagonal lamellar structure, solid lubricants like graphite accompany the metal flow so that the forged metal is not in direct contact with the die. At the opposite, soluble solutions like white lubricants provide a releasing effect thanks to their diesel effect. They protect the die and then help the part to be ejected. Effective lubrication will improve tool life and surface quality by reducing friction.
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