Coaxial cladding nozzle

European Patent N°0574580

US Patent N°5 418 350 -Date: 23/05/95

This patent presents a cladding nozzle for laser beam with coaxial injection of powder and use of a shielding gas. Laser cladding consists in melting with a laser beam a feeding material as a powder or a wire and due to the simultaneous melting of the material to be treated, it forms a seam weld with perfect metallurgical bond and a perfectly dense clad. The low dilution of the substrate enables to maintain the chemical characteristics of the feeding material. The precise control of the dilution helps the clad to keep all its properties of wear or corrosion resistance.

To date this patent concerns cladding with CO2, Nd-YAG and diode laser. The implementation of these nozzles in different companies around the world (USA, Australia, England, Canada, France .) confirms their industrial interest.

A micro nozzle, specially adapted for the prototyping of thin wall pieces (from 400/500 ?m to a few mm) is under validation.

This nozzle is sold by IREPA LASER