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(11) | EP 0 053 510 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Extrusion method |
(57) A method and apparatus for hot lubricated metal extrusion in which a billet is extruded
into a solid or tubular form by means of a die and/or a mandrel with an organic lubricant
interposed within a container, the method comprising feeding a combustion improver
or a mixture of a combustion improver and water to the surface of the extruded product
to burn off the carbide of the lubricant deposited on the surface of the extruded
product. |