Produits et services

Machines and installations for manufacturing, treating and collecting straps, wires and cables of metal; Machine tools for the production of metal and Machine tools for working metals; Stranding machines; Swaging machines; Moulding machines; Machine tools for cutting; Wire-coiling machines; Cable cylinders [parts of machines]; Yarn winding machines and Yarn twisting machines; Wire forming machines; Wire extruding machines; Wire cut machines; Wire drawing dies being parts of machines.

Produits et services

Machines and installations for manufacturing, treating and collecting straps, wires and cables of metal; machine tools for metal manufacturing and processing; forging machines; moulding machines; tools (machine -) for cutting; wire-coiling machines; cable cylinders [parts of machines]; wire-coiling machines; yarn winding machines; yarn twisting machines; wire forming machines; wire extruding machines; wire cut machines; wire drawing dies being parts of machines.

Produits et services

Extruding machines and installations for manufacturing, treating and collecting straps, wires and cables of metal; machine tools for metal manufacturing and processing; forging machines; extrusion moulding machines; cutting machines; wire-coiling machines; cable cylinders being machines parts; yarn winding machines; yarn twisting machines; wire forming machines; wire extruding machines; wire cutting machines; wire drawing dies being parts of machines

Produits et services

Machines and installations for manufacturing, treating and collecting straps, wires and cables of metal; Machine tools for the production of metal and Machine tools for working metals; Swaging machines; Moulding machines; Machine tools for cutting; Wire-coiling machines; Cable cylinders [parts of machines]; Wire-coiling machines; Yarn winding machines; Yarn twisting machines; Wire forming machines; Wire extruding machines; Wire cut machines; Wire drawing dies being parts of machines.

Produits et services

Metal drawing machines; Rotating electrical machines.

Abrégé

A resistance annealing furnace for annealing a metal wire, strand, string, wire rod or strap having at least two electric axes, which are provided with respective pulleys for conveying the metal wire, and DC voltage generator means suppliable by an AC voltage source to generate an annealing voltage applied between the two electric axes. The DC voltage generator means has a first voltage rectifier stage connectable to the AC voltage source to generate an intermediate DC voltage, an active power filter, connected so as to compensate the current harmonics at the input of the first voltage rectifier stage, a pulse width modulator to transform the intermediate voltage into a first PWM voltage, a voltage transformer to transform the first PWM voltage into a corresponding second PWM voltage, and second voltage rectifier means to transform the second modulated PWM voltage into the annealing voltage.

Classes IPC  ?

• C21D 9/62 - Fours continus pour bandes ou fils métalliques avec chauffage direct par résistance
• F27D 19/00 - Aménagement des dispositifs de commande
• F27D 11/04 - Chauffage par résistance ohmique avec passage direct du courant à travers le matériau à chauffer
• C21D 9/56 - Fours continus pour bandes ou fils métalliques
• H05B 1/02 - Dispositions de commutation automatique spécialement adaptées aux appareils de chauffage

Abrégé

A resistance annealing furnace for annealing a metal wire, strand, string, wire rod or strap having at least two electric axes provided with respective pulleys to convey the metal wire and a DC voltage generator suppliable with an AC voltage to generate an annealing voltage applied between the two electric axes so as to provoke the annealing due to Joule effect. The DC voltage generator has active supplying means supplied with the AC voltage so as to generate an intermediate DC voltage, a pulse width modulator to transform the intermediate voltage into a first PWM voltage with the same amplitude, a voltage transformer to transform the first PWM voltage into a second PWM voltage with a smaller amplitude, and a voltage rectifier stage to transform the second PWM voltage into the annealing voltage.

Classes IPC  ?

• C21D 9/52 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour fils métalliquesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour bandes métalliques
• C21D 9/56 - Fours continus pour bandes ou fils métalliques
• H05B 3/00 - Chauffage par résistance ohmique
• C21D 9/62 - Fours continus pour bandes ou fils métalliques avec chauffage direct par résistance
• F27D 11/04 - Chauffage par résistance ohmique avec passage direct du courant à travers le matériau à chauffer
• F27D 19/00 - Aménagement des dispositifs de commande

Produits et services

Machines and installations for manufacturing, treating and collecting straps, wires and cables of metal.