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Frequently Asked Questions

Everything you need to know about powder coating and Oracle Industries products.

Powder coating is a dry finishing process using electrostatically applied polymer powder cured under heat, delivering a durable, uniform finish that is tougher, more chemically resistant, and more sustainable than conventional liquid paint.
Oracle manufactures four powder coating product lines: Epoxy Polyester (indoor), Pure Polyester (outdoor/UV-resistant), Pure Epoxy (chemical-resistant industrial), and Polyurethane (premium high-gloss). All are zero-VOC and available in custom RAL shades.
Yes. Our powder coatings contain zero VOCs, produce no hazardous waste, and all overspray is reclaimed and reused, one of the most sustainable industrial finishing options available.
Yes. We use spectrophotometric colour matching for precise RAL, NCS, or custom sample matching. Minimum order for a custom-matched colour is 100 kg. Colour tolerance: ΔE ≤ 1.5 (CIELab).
Standard MOQ is 100 kg per shade. Custom matched colours also require a minimum of 100 kg. Trial sample orders may be discussed on a case-by-case basis for new customers.
Standard curing: 180–200 °C metal temperature for 10–20 minutes, depending on the product and the mass of the substrate. Low-cure formulations at 140–160 °C are available for heat-sensitive substrates.
Primarily metals: mild steel, galvanised steel, aluminium, cast iron, and magnesium alloys. Pre-treatment (shot blasting, zinc phosphating, or chromating) is strongly recommended for optimal adhesion and corrosion resistance.
Yes: free technical support including application guidance, pre-treatment recommendations, troubleshooting, and process optimisation visits for qualifying customers. Contact: oracleindustries94@gmail.com.
Oracle Industries manufactures powder coating paints at W 59, Additional MIDC, Satara 415004, Maharashtra, India. Satara sits on the Pune-Bangalore industrial corridor, so the plant serves the Pune, Satara, Kolhapur, Sangli and Mumbai manufacturing belts directly, and supplies customers across India. GSTIN 27AXWPC9225G1Z3.
Oracle Industries operates a 600 TPA (tonnes per annum) powder coating paint plant at Additional MIDC, Satara, Maharashtra. The plant produces four thermosetting powder coating lines, Epoxy Polyester, Pure Polyester, Pure Epoxy and Polyurethane, in smooth, matt, satin, texture and metallic finishes, with in-house spectrophotometric colour matching and an on-site quality testing laboratory.
Use the Get Quote form on this website, call +91 86559 96999, email oracleindustries94@gmail.com, or message us on WhatsApp. To get an accurate price first time, tell us: the product type or the end use, the shade (RAL number, NCS number, or a physical sample), the finish and gloss level, the substrate, whether the part is used indoors or outdoors, and the quantity in kg. Minimum order is 100 kg per shade.
Pure Polyester. It is the only one of the four Oracle product lines formulated for sustained UV exposure. Oracle’s Pure Polyester has been tested to 700–1000 hours QUV accelerated weathering (ASTM G154) and remains UV stable. Epoxy Polyester and Pure Epoxy both chalk and lose gloss under UV and should be restricted to indoor, enclosed or shaded service.
Epoxy Polyester is a hybrid: an epoxy resin cured with a polyester. It gives excellent mechanical strength, corrosion resistance and decorative flexibility at lower cost, but the epoxy content chalks under UV, so it is an indoor coating. Pure Polyester uses a polyester resin with a non-epoxy curing agent; it is UV stable and holds gloss and colour outdoors. Choose by exposure, not by price: an indoor hybrid used outdoors will fade within months.
Choose Pure Epoxy where chemical and corrosion resistance matter more than colour stability, and where the part is not in direct sunlight: pipes, valves, chemical tanks, pump housings, electrical enclosures, hospital and laboratory equipment. Oracle’s Pure Epoxy dead matt achieved 1000–1300 hours salt spray (ASTM B117), the highest salt spray figure of the four lines. It is not UV stable and will chalk outdoors.
Choose Polyurethane where appearance and film quality are the priority: automotive components, consumer goods, sports equipment and premium high-gloss finishes. It flows out smoother than polyester and holds a deeper gloss. Oracle’s Polyurethane achieved ≥1200 hours salt spray (ASTM B117) and ≥1500 hours humidity resistance (ASTM D2247), the strongest humidity performance of the four lines.
Pure Polyester. Architectural aluminium is permanently exposed to UV, rain and thermal cycling, which rules out epoxy-containing chemistries. Oracle’s Pure Polyester Glossy was tested on 0.8 mm aluminium with 5-stage zinc phosphate pre-treatment and achieved 90–93 GU gloss at 60°, 500–750 hours salt spray and 700–1000 hours QUV. For architectural work, specify the RAL or NCS shade, the gloss band and the required film thickness in your enquiry.
Measured to ASTM B117 / ISO 9227, with no rust creep beyond 2 mm, on 0.8 mm panels with zinc phosphate pre-treatment: Epoxy Polyester (glossy, matt, satin) 500–750 hours; Pure Polyester (glossy, matt, satin) 500–750 hours; Pure Epoxy dead matt 1000–1300 hours; Polyurethane ≥1200 hours. Full reports are published on the Technical Documents page. Salt spray is a comparative laboratory test: it ranks coatings against each other, it does not convert directly into years of service life.
Oracle’s laboratory reports are based on a dry film thickness of 70–80 µm, measured to ASTM D7091 / ISO 2808. As a general rule, 60–80 µm suits indoor decorative work, and 80–120 µm suits exterior or aggressive industrial service where corrosion protection is the priority. Too thin and you lose corrosion protection and coverage; too thick and you lose impact resistance and flexibility, and edges become prone to chipping.
Standard cure is 180–200 °C metal temperature for 10–15 minutes. Pure Epoxy dead matt is cured at 200 °C metal temperature for 10–15 minutes. Low-cure formulations at 140–160 °C are available for heat-sensitive substrates. The critical point is that cure time is counted from the moment the metal itself reaches temperature, not from when the part enters the oven. Heavy or thick-walled parts can need several additional minutes just to come up to temperature, and under-cure is a very common cause of poor adhesion and low chemical resistance.
Gloss is measured at 60° to ASTM D523 / ISO 2813. Verified levels across the range: Pure Epoxy dead matt 5–8 GU; Pure Polyester matt 9–11 GU; Epoxy Polyester matt 8–10 GU; Epoxy Polyester satin 55–60 GU; Pure Polyester satin 60–70 GU; Epoxy Polyester glossy 88–90 GU; Pure Polyester glossy 90–93 GU. Texture, wrinkle, metallic and pearlescent effects are also available. Specify gloss as a band with a tolerance, not a single number.
Pre-treatment is the single largest factor in coating life, more than the powder itself. Oracle’s laboratory results are obtained on 5-stage zinc phosphate pre-treated mild steel, and on 7-stage zinc phosphate pre-treated aluminium for Pure Epoxy. In practice: degrease thoroughly, remove all rust and mill scale by shot blasting or pickling, apply a conversion coating suited to the metal, rinse with demineralised water, and dry fully before coating. Coating over oil, rust, scale or trapped moisture will fail regardless of powder quality.
Every batch type is tested in Oracle’s on-site Quality Testing and Research Laboratory against recognised international methods: gloss ASTM D523 / ISO 2813; film thickness ASTM D7091 / ISO 2808; cross-hatch adhesion ASTM D3359 / ISO 2409; mandrel bend ASTM D522; Erichsen cupping ISO 1520; impact resistance ASTM D2794 / ISO 6272; scratch resistance ASTM D7027; pencil hardness ASTM D3363; salt spray ASTM B117 / ISO 9227; humidity ASTM D2247; chemical resistance ASTM D1308; accelerated weathering QUV ASTM G154. Reports are published in full and can be downloaded from the Technical Documents page.
Service life depends on the chemistry, the pre-treatment, the film thickness and the environment, so no single number applies. Correctly pre-treated and cured, indoor powder coated components routinely last the life of the product. Outdoors, a standard polyester holds gloss and colour for several years, longer in sheltered or inland locations and shorter in coastal, industrial or high-UV exposure. Oracle’s Pure Polyester is tested to 700–1000 hours QUV accelerated weathering (ASTM G154). Accelerated tests rank coatings; they are not a direct conversion to calendar years.
Peeling is almost always an adhesion failure originating at the metal surface, not a fault in the powder. The usual causes, in order of frequency: inadequate degreasing, so the coating sits on an oil film; rust or mill scale left on the substrate; no conversion coating or a failed phosphate bath; moisture trapped from poor drying after rinsing; and under-cure, where the film never fully crosslinked. Check adhesion with a cross-hatch test to ASTM D3359, a properly applied Oracle coating rates 5B / GT-0.
Orange peel is a flow defect: the molten powder did not level out before it gelled. Common causes are too coarse a particle size, too thick a film, oven temperature too low or ramp-up too slow, excessive gun voltage causing back-ionisation, or the gun held too close to the part. Fixes: raise the oven temperature slightly, hold the correct gun-to-part distance, reduce film build to the specified range, and confirm the metal actually reaches cure temperature for the full dwell.
This is the Faraday cage effect. The electrostatic field concentrates on edges and protrusions and cannot penetrate deep recesses, so powder is repelled from internal corners and leaves them thin or bare. Remedies: reduce gun voltage to roughly 50–60 kV, increase the gun-to-part distance, coat recesses first before the field builds on the outer surfaces, use a lower-velocity air setting, or switch to tribo (friction-charged) guns, which do not rely on a corona field and penetrate recesses far better.
Two distinct causes, and it matters which one you have. Pinholes and bubbles usually mean outgassing: air or moisture trapped in porous substrates such as castings, galvanised steel or weld seams escaping through the film during cure. Preheat the part above cure temperature to drive off the gas before coating, or use a degassing-tolerant formulation. Craters and fisheyes instead indicate contamination: silicone, oil or water carried in from the compressed air line or from nearby release agents. Fit and maintain a coalescing filter and dryer on the air supply, and keep silicone products out of the coating area.
No. Powder coating is a barrier coating, not a rust converter. Applied over rust or mill scale it bonds to the loose oxide layer rather than to sound metal, and it will lift and flake as the corrosion continues underneath. All rust, scale and old coating must be removed by shot blasting, pickling or mechanical cleaning down to clean metal, followed by a conversion coating, before powder is applied.
Oracle powder coatings have a stated storage stability of 12 months when kept cool and dry. Store sealed bags or boxes off the floor in a dry area below about 25 °C, away from direct sunlight, heat sources and humidity. Powder that has been stored warm can sinter or form soft lumps, which shows up as poor fluidisation, uneven film build and orange peel. Rotate stock first-in-first-out and reseal opened bags immediately.
Oracle powder coatings are 100 % solids and contain zero VOCs: there are no solvents to evaporate, no solvent emissions and no liquid hazardous waste, and overspray is reclaimed and reused. Products are stated as RoHS compliant. A GHS-format Safety Data Sheet for thermosetting powder coating is published on the Technical Documents page, alongside the full laboratory test reports and the colour shade card. If you need documentation in a specific format for an export customer or an audit, contact us and we will supply it.

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