Joule effect continuous annealer for multiple wire drawing machines

(19)

(11)

EP 1 063 306 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	08.10.2003 Bulletin 2003/41

(43)	Date of publication A2:
	27.12.2000 Bulletin 2000/52

(21)	Application number: 00201070.0

(22)	Date of filing: 23.03.2000

(51)	International Patent Classification (IPC)⁷: C21D 9/62 // C21D8/06

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

30.03.1999 IT MI990650

(71)	Applicant: Sictra Machinery s.r.l.
	21052 Busto Arsizio (Varese) (IT)

(72)	Inventor:
	Monti, Giorgio 20090 Vimodrone (Milano) (IT)

(74)	Representative: Mittler, Enrico
	c/o Mittler & C. s.r.l., Viale Lombardia, 20 20131 Milano 20131 Milano (IT)

(54)	Joule effect continuous annealer for multiple wire drawing machines

(57) A continuous joule effect annealer for multiple wire drawing machines comprises a capstan (5) for the dragging of the wires (2) that is made rotate at a constant speed by a first motor (6) and at least two contact rollers (12-14) that are engaged by said wires (2) and that are kept at an electric potential having alternate polarity with respect to one another and to the capstan. The contact rollers (12-14) are made rotate by a second motor (15) that is independent from the first one (6). Between said capstan (5) and said contact rollers (12-14) an idle roller (17) is interposed that is suitable to detect the degree of tensioning of the wires (2) that are being treated and to operate on a speed governor (21, 22) that is associated with said second motor (15) in order to govern the rotation speed of the contact rollers (12-14) to such a value as to assure a tangential speed of the same rollers equal to the wires' dragging speed (2).

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