Nickel based alloy wire Inconel 625 grade Thermal Spray Wire 1.6mm, 2.0mm
Thermal Spray wire
Thermal spraying techniques are coating processes in which melted (or heated) materials are sprayed onto a surface.The "feedstock" (coating precursor) is heated by electrical (plasma or arc) or chemical means (combustionflame).Thermal spraying can provide thick coatings (approx. thickness range is 20 micrometers to several mm, depending on the process and feedstock), over a large area at high deposition rate as compared to other coating processes such aselectroplating, physical and chemical vapor deposition. Coating materials available for thermal spraying include metals,alloys, ceramics, plastics and composites. They are fed in powder or wire form, heated to a molten or semimolten state and accelerated towards substrates in the form of micrometer-size particles. Combustion or electrical arc discharge is usually used as the source of energy for thermal spraying. Resulting coatings are made by the accumulation of numerous sprayed particles. The surface may not heat up significantly, allowing the coating of flammable substances.
Coating quality is usually assessed by measuring its porosity, oxide content, macro and micro-hardness, bond strength andsurface roughness. Generally, the coating quality increases with increasing particle velocities.
Several variations of thermal spraying are distinguished:
Plasma spraying
Detonation spraying
Wire arc spraying
Flame spraying
High velocity oxy-fuel coating spraying (HVOF)
Warm spraying
Cold spraying
Ohmalloy provide two kinds of thermal spray wire.
Nickel based alloy wire such as NiAl95/5 and Ferrum based alloy wire such as OCr25Al5
Our company use Vaccum furnace and casting control to mak the NiAl alloy solid wire, it is specially used for arc spray boning layer. This wire has stable chemical composition, low oxgen and high bonding strength.
| Chemical Composition |
Coating Strength (Mpa) |
Melting temp
(c) |
Coating Hardness
(HRC) |
| Ni 95% Al 5% |
65-68 |
1010 |
23-25
|
Applying technique: Arc spray
Specification of wire: 1.6mm, 2.0mm, 15kg/spool
Alloy 625 is a high purity nickel chrome wire specifically designed for arc spraying. It produces dense, well-bonded coatings with resistance to corrosion, and stress cracking in caustic mediums.
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