(19)
(11) EP 0 348 596 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.10.1991 Bulletin 1991/40

(43) Date of publication A2:
03.01.1990 Bulletin 1990/01

(21) Application number: 89102566.0

(22) Date of filing: 15.02.1989
(51) International Patent Classification (IPC)5: B21B 21/04
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 30.06.1988 IT 2117788

(71) Applicant: INNSE INNOCENTI ENGINEERING S.p.A.
I-16121 Genova (IT)

(72) Inventors:
  • Maccarini, Carlo c/o J.P. Calmes Consultants
    CH-1618 Chatel St. Denis (CH)
  • Quecchia, Giorgio
    I-20094 Corsico (Milan) (IT)
  • Sardelli, Bruno c/o J.P. Calmes Consultants
    CH-1618 Chatel St. Denis (CH)

(74) Representative: Vannini, Torquato et al
c/o JACOBACCI & PERANI S.p.A. Via Visconti di Modrone, 7
20122 Milano
20122 Milano (IT)


(56) References cited: : 
   
       


    (54) A pilgrim-process rolling mill for hot rolling pipes


    (57) In a pilgrim-process rolling mill, the mandrel-breaker bush (16) is mounted to the spindle (7) on which it is guided for movement between two stop ledges (19,20) in axial alignment relationship with the mandrel (10) accommodating seat (16). Thus, the rolling mill reliability can be improved and replacement of the bush at each rolling course eliminated.







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