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| SAI SURFACE COATING TECHNOLOGIES |
About UsM/S Sai Surface Coating Technologies specializes
in surface modification techniques and precision machining technology.
Based at Hyderabad (India), we have diverse surface modification
technologies spanning detonation spray process, electro spark coating
system and hard facing, etc.; in addition to wide utility precision
machining, and grinding facilities at our specially equipped site.
These enable us to offer our customers a one-stop-shop service for
every engineering requirement.In
all our operations, whether it is a surface problem, a state of the art
machining, or an experienced component refurbishment; we offer a good
deal of quality and customer service that are quite unique and simply
unsurpassed. With a widespread utility of the most popular coating
option such as D-gun (Detonation Gun) coupled with an
unparalleled surface engineering expertize, we lead the market by
offering our customers - the most effective solutions and timely
service.
Unique Advantages- Increase in wear resistance by several times, superior to other coating techniques currently available in Indian market.
- Dense microstructure (0.1-1% porosity)
- Smooth surface finish (1-4um Ra). Much smoother finishes could be obtained by post-coating grinding
- Extremely high coating band strength (>10,000 psi)
- Very low substrate temperatures
- Anti corrosion properties of ceramic and carbide coatings
- Superior impact/fretting/erosion wear resistance
- Ability to rebuild and repair of the coated parts
- Inexpensive
way to obtain required parameters of wear resistance in comparison to
sintered parts made of wear resistance materials
- Negligible
thermal degradation of power during coating process makes the process
suitable, not only for spraying reactive powders but also to preserve
the bulk micro structures.
D-Gun Coatings
Following
are some of the powders that can be used for coating by detonation
spray process which almost covers the entire spectrum of wear, erosion
and corrosion related problems. The coating hardness, operating
temperature and their respective fields of application are also given.
However, a wide range of other powders can also be coated according to
customer application requirement.
| Powder | Coating
Hardness (HV)
| Operating
Temperature (oC ) | Application Field | 100 Cu
|
| 400
| Electroconductive Coatings | | Al2o3 | 1100 | 980
| Heat
and wear resistant high temperature protective coatings ensuring high
chemical stability, oxidation resistance and dielectric
resistance
| WC-Co
| 1300
| 560
| High wear, improved mechanical impact and heat shock resistance with smooth "as coated" surface
| WC-Ni
| 1100
| 700
| High wear and erosion resistance, impact strength
| Cr3C2-NiCr
| 875
| 1000
| High wear resistance at high temperature, corrosion and erosion resistance
| NiCrAlY
| 400
| 1300
| Corrosion resistant bond coat for high temperature applications | CoCrAlY
| 400
| 1200
| Corrosion resistant bond coat for high temperature applications | NiCr
| 200
| 1350
| Corrosion and oxidation resistant bond coat
| Al2O3+TiO2
| 950
| 700
| Heat and wear resistance coatings, low coefficient of friction, semi conductor
| WC+Co+Cr
| 1150
| 760
| Excellent wear resistance in water based solutions and improved corrosion resistance in acidic environment | WTiC+Ni
| 1300
| 760
| Excellent wear resistance in basic solutions. Very smooth "as-coated" surface
| Cu+Ni+In
| 300
| 425
| Good resistance to galling particularly when applied to titanium and its alloys
| CO+Cr+Mo+Si
| 825
| 650
| Good corrosion resistance and high temp. wear resistance
| Ni+Cr+Mo+Si
| 800
| 980
| Good resistance to fretting and adhesive wear, good corrosion resistance
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