Introduction
ARK 40 arc spray coating has high bonding strength. It can replace aluminum bronze and expensive nickel aluminum, molybdenum and other buffer layers. It is inexpensive and has a certain degree of wear resistance. Since its introduction in the market in 1996, it has been widely used by customers and has earned positive feedback. [Patented product: Hot-sprayed wire ZR96120778.7 (the first wire material patent in China containing rare earth elements).]
Main features
- General abrasion resistance, suitable for lubricated metal-to-metal wear
- High bonding strength
- Useful for spraying large, thick coatings
Typical applications
- Buffer layers
- Engine crankshaft and bearing housing repair
- Restoring dimensions of part surfaces
Chemical composition of deposited metal (%)
| C | Cr | Al | Ni | Mo | V | Fe |
|---|---|---|---|---|---|---|
| <1.0 | <5.0 | <5.0 | <10.0 | <2.0 | <1.0 | Balance |
Mechanical properties
| Bond Strength (MPa) Acc. to ASTM C633-01 | Micro-hardness (HV 0.1) Kg/mm² |
|---|---|
| >55 (Low carbon steel substrate) | 380–420 |
Coating properties
| Density (g/cm³) | % Prosity | % Deposition efficiency |
|---|---|---|
| 7.48 | <5 | 70–85 |
Recommended spraying parameters
| Diameter: in (mm) | Air pressure (MPa) | Current (A) | Voltage (V) |
|---|---|---|---|
| 1⁄16 (1.6) | 0.5–0.6 | 160–220 | 28–34 |
Diameters and packaging
| Diameter: in (mm) | Packaging: lb (kg) |
|---|---|
| 1⁄16 (1.6) | 27.5 (12.5) (Vacuum pack spool) |
Metallographic photos
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| Click here to download the datasheet for Kooben ARK 40. |
