Abrégé

A threading die (100) for cold-drawing a metal wire (4) is described; the threading die comprises a hole (103) for the inlet of the wire to be drawn and the hole comprises a conical part (106) for drawing the metal wire and a truncated-cone shaped part (105) which precedes the conical part in the advance path of the metal wire and wherein no decrease in the diameter of the metal wire occurs; the base with the greater diameter (111) of the truncated-cone shaped part precedes the base with the shorter diameter (112) in the advance path of the metal wire.

Classes IPC  ?

• B21C 3/14 - Supports de filières combinés à des dispositifs de guidage du matériau à étirer, ou à des dispositifs pour le refroidissement, le chauffage ou la lubrification

Abrégé

A threading die (100) for cold-drawing a metal wire (4) is described; the threading die comprises a hole (103) for the inlet of the wire to be drawn and the hole comprises a conical part (106) for drawing the metal wire and a truncated-cone shaped part (105) which precedes the conical part in the advance path of the metal wire and wherein no decrease in the diameter of the metal wire occurs; the base with the greater diameter (111) of the truncated- cone shaped part precedes the base with the shorter diameter (112) in the advance path of the metal wire.

Classes IPC  ?

• B21C 3/02 - Matrices; Emploi d'un matériau spécifié pour ces filières; Nettoyage de ces filières
• B21C 3/04 - Matrices; Emploi d'un matériau spécifié pour ces filières; Nettoyage de ces filières à ouverture constante
• B21C 9/00 - Refroidissement, chauffage ou lubrification du matériau à étirer

Abrégé

There is described equipment for cold-drawing a metal wire (4); the equipment comprising a succession of a sleeve (510) and a threading die (600) in the advance path of the wire. The sleeve comprises a hole (513) for the inlet of the wire to be drawn and said threading die comprising a conical hole (610); the equipment comprises first support means (512) of the sleeve and second support means (612) of the threading die which are coupled with each other so as to keep said sleeve and said threading die in position to allow the advance path of the wire from the sleeve to the threading die. The equipment comprises a further element (70) provided with a cylindrical hole (74) for the inlet of the wire to be drawn and which precedes the sleeve in the advance path of the metal wire; the further element comprises at least one hole (78) for the inlet of compressed air into the cylindrical hole.

Classes IPC  ?

• B21C 3/14 - Supports de filières combinés à des dispositifs de guidage du matériau à étirer, ou à des dispositifs pour le refroidissement, le chauffage ou la lubrification
• B21C 9/00 - Refroidissement, chauffage ou lubrification du matériau à étirer
• B21C 3/04 - Matrices; Emploi d'un matériau spécifié pour ces filières; Nettoyage de ces filières à ouverture constante
• B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer

Abrégé

Equipment for cold-drawing a metal wire. The equipment comprises a sequence of a sleeve and a drawing die in the advancing wire path; the sleeve comprises a hole for inserting the wire to be drawn, and the drawing die comprises a conical hole. The equipment comprises first support means of the sleeve and second support means of the drawing die coupled with each other so as to keep the sleeve and the drawing die in place to allow the wire to advance from the sleeve to the drawing die. The first support means comprises a hole for inserting the metal wire which precedes the hole of the sleeve in the metal wire path; the hole of the first support means is coaxial with the hole of the sleeve and has a smaller diameter than the initial opening of the sleeve hole in the metal wire path.

Classes IPC  ?

• B21C 3/14 - Supports de filières combinés à des dispositifs de guidage du matériau à étirer, ou à des dispositifs pour le refroidissement, le chauffage ou la lubrification

Abrégé

An equipment for cold-drawing a metal wire is described. The equipment comprises a sequence of a sleeve (100) and a drawing die (200) in the wire advance path; the sleeve comprises a hole (103) for inserting the wire to be drawn, and the drawing die comprises a conical hole (210). The equipment comprises first support means (102) of the sleeve and second support means (202) of the drawing die coupled with each other so as to keep the sleeve and the drawing die in place to allow the wire advance path from the sleeve to the drawing die. The first support means (102) comprise a hole (101) for inserting the metal wire which precedes the hole (103) of the sleeve in the metal wire advance path; the hole (101) of the first support means is coaxial with the hole (103) of the sleeve and has a smaller diameter than the initial opening (111) of the sleeve hole in the metal wire advance path. Said hole of the sleeve comprises an initial truncated-cone-shaped part, the larger diameter base of which is the initial opening of the sleeve hole in the metal wire advance path, the walls of said initial truncated-cone-shaped part of the sleeve hole forming an angle of less than 30° with the hole axis (A).

Classes IPC  ?

• B21C 3/14 - Supports de filières combinés à des dispositifs de guidage du matériau à étirer, ou à des dispositifs pour le refroidissement, le chauffage ou la lubrification