| Hard Chrome Plating
1. Degrease
2. Alkaline Clean
3. Grit Blast
4. Rinse
5. Etch
6. Rinse
7. Plate
8. Rinse
9. Dry
10. Grind / Polish |
Thermal Spraying Four Steps:
1. Degrease 2. Grit Blast 3. Spray 4. Grind / Polish |
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Thermal Spray Coating Application Capabilities
- No
Hexavalent Chrome
- Faster
application (12-24 x)
- Wider
range of materials
- Thick
coating capability
- No
part size limitation.
- Easy
to mask, selective areas easily coated
- Thermal
spraying does not effect base metal
- Restoration
of parts previously discarded
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Thermal
Spray Coatings vs Hard Chrome Plate
- No
hydrogen embrittlement of substrate material
- Higher
hardness
- Increased
wear resistance and service life
- Improved
corrosion resistance
- Better
bond characteristics
|
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|
Corrosion
Resistance
(ASTM B117-73 Salt Spray Test)
- Navy
Marine Test Facility
- Key
West Florida
- 18
month atmospheric exposure test
- Weekly
sprayed with salt water
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| Chrome Plate |
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|
WC
17Co
HP/HVOF |
 |
|
WC
10Co 4Cr
Diamond Jet |
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