(19)
(11) EP 0 053 510 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.07.1982 Bulletin 1982/28

(43) Date of publication A2:
09.06.1982 Bulletin 1982/23

(21) Application number: 81305652

(22) Date of filing: 30.11.1981
(84) Designated Contracting States:
DE FR GB

(30) Priority: 29.11.1980 JP 16991880

(71) Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO
 ()

(72) Inventors:
  • Nishihara, Masao
     ()
  • Matsushita, Tomiharu
     ()
  • Noguchi, Masataka
     ()
  • Ohte, Akira
     ()
  • Arimura, Kazuo
     ()
  • Kimura, Tetsuo
     ()
  • Iwai, Akira
     ()
  • Hayashida, Nobuo
     ()

   


(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.







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