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CERAMIC PLASMA COATING PREPARATORY AND FINISHING OPERATIONS PRODUCTION PROCESSES  

 

 CERAMIC PLASMA COATING
     
      GENERAL DESCRIPTION OF TREATMENT

This is a ceramic coating to be used in all cases requiring a combination of resistance to wear of ceramic compounds with durability and resistance to impact typical of metals.
The process envisages the use of a number of noble gases, which, via special jets, pass through an electric arc and ionise, giving rise to an enormously accelerated jet at 2000° C.
A very fine particle ceramic powder is delivered to the plasma jet, which is melted and sprayed onto the part to be coated, on which it adheres and cools instantaneously.
The part that undergoes this treatment remains at a temperature of approx. 80°C.
The surfaces subject to plasma coating are pre-treated to obtain a specific macro-roughness to ensure anchoring of the ceramic coating.
A specific preparation can also significantly increase adherence of the coating.
   

   
    MECHANICAL PROPERTIES   Hardness – Resistance to abrasion – Resistance to wear
         
    COATING TYPES AND PROPERTIES  
COATING TYPE PLASMA COATING WITH CERAMIC OXIDES
Coating codes A100 AT97 AT87 AT60 T100 C100
Composition 100%
AL2O3		 97% AL2O3
3% TiO2 		 87% AL2O3
13% TiO2  		 60% AL2O3
40% TiO2  		 TiO2 Cr2O3
Colour White Grey Black Black Black Black
Vickers hardness 1700 1660 1650 1550 1500 1750
Electric behaviour Insulating Insulating Conductor Conductor Conductor Conductor
Coating thickness Normally 150±50 micron. Other thicknesses available on request
Average roughness Ra micron MATT:
Ra from 4 to 8		 POLISHED SURF.:
Ra from 1 to 2		 GROUND SURF.:
Ra from 0,6 to 1		 LAPPED GROUND SURF.:
Ra from 0,3 to 0,6
         
    RESISTANCE TO CORROSION  

The ceramic coating is porous and therefore does not guarantee optimal resistance to corrosion per se. Where necessary, we can solve the problem by sealing off the porosity.
         
    COMPATIBLE MATERIALS   All main types of metal materials can be coated. Our long-standing experience has achieved highly specialised skills in the field of metal wiring, also small gauge, as well as parts with round and flat forms.
         
    DIMENSIONS  

DIMENSIONAL CONSTRAINTS
- Metal wire: minimum Ø = 1mm
- Sheet metal: minimum gauge = 0,8 mm
- Cylinders: Ø up to 50 mm, max. length 2000 mm
                      Ø 50-400 mm, max. length 1500 mm

WEIGHT LIMITS
50 Kg
         
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