PLASMA, ARC, ACETYLENE-OXYGEN

Hardfacing

A welding technique that is used to fill defects in a worn-out part, but also to apply layers that are resistant to abrasion, corrosion, erosion, abrasion and impact loads. Of the available surfacing methods, we have plasma, arc and acetylene-oxygen methods.

Plasma Transfered Arc - PTA

Plasma cladding technology allows to deposit layers from powders with precisely defined chemical and phase compositions. Its advantage over the arc method is the lower linear energy of the process, which limits the decomposition and dissolution of hard carbide phases – which are components of composite additives – to less beneficial forms. The surface of the deposit is smooth. The content of the substrate material in the surfacing is low.

Arc hardfacing

Arc hardfacing technology is most often used in the reconditioning of large components where there is a need to replace large material defects in a short period of time. It is economical, efficient and easy to robotise. For wear-resistant layers operating in corrosive environments or impact, the use of additional primer buffer layers is recommended.

Acetylene-oxygen surfacing

Gas hardfacing is used in the hardfacing of coarse-grained tungsten carbide layers to provide “offensive” hardfacing properties such as the ability to cut, grind or shred.

Surfacing is a fundamental process used in the reconditioning of machine parts. Together with thermal spraying, it makes it possible to increase the service life of components.

Plasma hardfaced blades.