Arc spray
The arc spraying (also LDS - L maybe arc d raht s inject or D raht l maybe bow s called inject) is a powerful wire spraying method for the production of coatings, be injection molded at the electrically conductive materials.
An arc is ignited between two wire-shaped spray materials of the same or different types . The wire tips are melted at a temperature of around 4000 ° C and blown onto the prepared workpiece surface using atomizer gas. When using nitrogen or argon instead of air as the nebulizer gas , oxidation of the materials is reduced. Typical layer thicknesses are in the range 0.2–20 mm. Practically any electrically conductive, wire-shaped material can be used as the material. By using hollow wires (tubular wires) with carbidic or ceramic fillings, it is possible to produce hard material layers. Areas of application for arc spraying include: corrosion protection , wear protection, slide bearings , repair of incorrectly machined machine parts, etc. The process is characterized by very high application rates, but the low particle speeds lead to slightly porous layers.
Related procedures
- Flame spraying ,
- Laser spraying ,
- Detonation syringes ,
- Cold gas spraying ,
- Plasma powder deposition welding ,
- Plasma spraying .
HVOF syringes (derived from high-velocity oxygen fuel)
Web links
- Sketch and pictures of arc spraying , available on December 18, 2018.
- Carbide materials for thermal spraying , available on December 18, 2018.
- Overview of thermal spray processes and wire arc spraying