welding-alloys.com 27 Thermal arc spraying Within the spectrum of thermal spraying technologies, the arc spraying process stands out for its cost-effectiveness and efficiency. This methodology offers a robust solution for a diverse array of applications, providing superior resistance against various forms of wear, including abrasion, erosion, thermal degradation, metal-to-metal friction, and corrosion. The twin wire arc spraying process utilises two conductive wires, each assigned an opposite electrical charge. These wires melt under the influence of the electric arc, and are then atomized by a stream of dry compressed air to form a cohesive coating layer. Cored wires, notable for their versatile chemical composition, significantly enhance the adaptability of this process to specific application requirements. Our HARDSPRAY product line encompasses both iron-based and nickel-based cored wires, precisely engineered to combat all forms of wear. These coatings are characterised by their exceptional density, minimal porosity, and superior bond strength, ensuring optimal performance under the most demanding conditions. We also supply WA SPRAY solid wires, featuring two of the most popular thermal spray solutions available on the market, to complete the range. Our portfolio of thermal spray wires is designed to provide solutions across a range of operating environments, combating various mechanical and thermal stresses. Product Composition [%] Hardness C Mn Si Cr Ni Mo Nb W B Al Fe Others HARDSPRAY HB4 0.1 1.5 1.5 29 3.8 Bal. Matrix: 45-55 HRC Carbides: 1000-1150 HV0.1 HARDSPRAY 140 1.2 22 0.5 4 3.5 6.5 4.5 Bal. 65-70 HRC HARDSPRAY NI WC 0.4 5 Bal. 2 WSC: 62 Matrix: 45-55 HRC Carbides: 2000-2800 HV0.1 HARDSPRAY NI CBS 0.4 4.5 20 Bal. 2 0.7 700-800 HV0.1 HARDSPRAY NI Al5 Bal. 5 180-200 HV HARDSPRAY NI Cr20 20 Bal. 100-150 HB WA SPRAY CuAl9 9 Cu: Bal 63-65 HRB WA SPRAY 13Cr 0.3 0.6 1 13 Bal. 35-45 HRC The technical datasheets for these products are available on our website. The safety datasheets are also available on request. Back to contents page
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