Corrosive Protection Package
What Is E-Coat?
The advantages of E-Coated coils
- Uniform film build.
- Excellent thermal transfer properties.
- Up to 3000 hours of salt-spray protection. (Tested as per ASTM B117)
- Lower Cost
Electrocoating (or E-Coat) is an immersion coating process in which charged coating particles are attracted to an oppositely charged metallic surface. As the coating is deposited, it forms a finish which begins to insulate the metal from the surrounding charged solution. Deposition continues until the coating thickness becomes sufficient to form a barrier against further coating attraction. By controlling the charge, we can apply E-Coat within a tolerance of +/- .0001 of an inch! (Commonly applied thickness' are between .00025 and .001 inches).
Electrocoating offers several advantages in the finishing of metal products. Corrosion
resistance is superior to other coating application methods because immersion E-Coat provides a complete, uniform coating. The coating is applied evenly in corners, on edges, and in hard to reach, partially enclosed spaces. This flexibility allows us to coat products that
cannot easily be sprayed, or in some cases, seen.
E-Coating dramatically cuts material costs by minimizing coating waste. Virtually all of the coating put in the tank goes on the product and stays on the product. In addition, low solvents and water-borne formulations make electrocoating the perfect environment-friendly finish for the new millennia and beyond.
2006 O.C.C.'s focus: Advanced coil coating:
Oklahoma Custom Coating has been hard at work re-fitting our Seminole, OK facility to accommodate the growing coil coating market. We have designed a state-of-the-art cathodic E-Coat process to coat high-surface area products in an efficient, reliable, and low-cost manner. Utilizing PPG's eighth generation PowerCron 8000HE E-Coat technology, We are now able to supply coil and radiator manufacturers with the very best corrosion protection in the industry. The combination of our dedication to customer service and quick turnaround times, have made us the premiere E-Coat job shop in the Mid-West.
Throwing Power
Custom Racking & Masking
Over a decade of experience in custom racking and masking, have made Oklahoma Custom coating the "go-to" source for challenging coating projects. No job is to big or too small.
Perhaps the most advantageous aspect of the electrocoating process is "throwing power" - the ability to achieve complete coating everywhere on the product.
Each charged coating particle in an E-Coat solution seeks out the point of greatest opposite attraction. At the
beginning of the process, this could be anywhere on the bare metal surface. However, as coated particles are deposited, they lose their charge and insulate the tiny areas they cover, forcing additional coating to find a new location. Out of the way corners and exposed
edges are no exception, giving E-Coated products superior surface coverage.
In this way, an electrocoat finish builds at an extremely even rate - layer by microscopic layer - until the insulating nature of the coating is sufficient to halt further attraction. Thickness can be closely controlled through regulation of the voltage applied to the coating solution.
Partially enclosed areas and inside corners are well covered because electrocoating is not influenced by the Faraday Cage Effect, as is spray coating. Repulsive electric fields produced at metal corners can greatly hamper spray penetration into inside spaces.
E-Coating"s advanced throwing power gives your product a durable, uniform coating applied within very tight tolerances and unparalleled corrosion resistance.
How does E-Coat work?
"Electrocoating is a painting method which uses an electrical current to deposit paint. The process works on the principal of "Opposites Attract"...
The electrocoat system applies a DC charge to a metal part immersed in a bath of oppositely charged paint particles. The paint particles are drawn to the metal part and paint is deposited on the part, forming an even, continuous film over the entire surface, until the coating reaches the desired thickness. At that thickness, the film insulates the part, where attraction stops and the process is complete.
In cathodic electrocoating, the product has a negative charge, attracting the positively charged paint particles. Cathodic electrocoat applies a negative electrical charge to the metal part which attracts positively charged paint particles. Reversing the polarities used in the anodic process significantly reduces the amount of iron entering the cured paint film and improves the cathodic properties. Cathodic coatings are highperformance coatings with excellent corrosion resistance that can be formulated for exterior durability."
Information provided by: The Electrocoat Association
OCC proudly introduces the newest edition to our E-Coat product lineup: POWERCRON 8000HE
POWERCRON 8000HE Features at a glance:
POWERCRON 8000HE is PPG's high edge build, eighth generation cathodic epoxy technology.
Its advantages include:
- State-of-the-art corrosion resistance particularly on sharp edges.
- Lead-free formulation. Improved corrosion resistance
- Lead-free film
- Lead-free effluent
- Cure capability as low as 300 F. depending on requirements.
- Lower applied cost.
- Reduced film shrinkage
- Reduced cure temperature
- Reduced emissions.
- Low solvent content
- VOC less than 0.1 lbs/gal.
- HAPs-free
- Reduced cure by-products for maximum edge coverage.
POWERCRON 8000HE is PPG's eighth generation cathodic epoxy electrocoat technology modified for maximum edge coverage. This product demonstrates several improvements over previous generations including excellent corrosion resistance without the use of heavy metals, improved transfer efficiency, reduced cure temperature, and reduced volatile emissions.
8000HE was developed to provide superior corrosion resistance without the use of heavy metals in the formulation, particularly lead. The resulting product is free of heavy metals in the coating film and also any effluent that is discharged from the system.
POWERCRON 8000HE exhibits one of the highest transfer efficiencies available in a high performance cationic epoxy electrocoat. This was achieved through a reduction in the amount of cure byproducts from the coating, or weight loss, during the curing process.
POWERCRON 8000HE is formulated with a low organic solvent content, resulting in a Volatile Organic Compound (VOC) content of less than 0.1 pounds per gallon. In addition, this product is formulated with HAPs- (Hazardous Air Pollutants) free solvents.
COMMERCIAL USES:
Cationic epoxy electrocoats are the benchmark for corrosion resistance and are utilized where high performance requirements are demanded. Listed below are a number of industries currently using these products:
• Coils & Radiators • Automotive Parts & Accessories • Heavy Duty Trucks • Compressors • Marine Engines • Computer Parts • Metal Furniture • Fasteners • Switchgear • Generators • Transformers •Electric & Hydraulic Motors • Aerospace Components • Military Components • Prosthetic Limbs • Undercarriage Components • Rail-Road • HVAC • Oil Field • RoHS • Off-Shore Operations • And Much More...
POWERCRON® 8000HE Black Product Data
APPLICATION DATA
Bake: Standard bake is 20 minutes at 325°F (163°C) metal temperature. Higher temperatures may be required for specific properties.
Weight Loss: 9% (20 minutes @ 325°F metal temperature)
VOC: < 0.1 lbs per gallon minus water (as supplied)
HAPs: None
Heavy Metals: None
FILM PROPERTIES
Property Test Method Performance
Color --- Black
Film Thickness --- 0.4 - 1.2 Mils
Gloss - 60 Degree ASTM D523-89 50 – 80
Pencil Hardness ASTM D3363-00 2H Minimum
Cross-Hatch Adhesion ASTM D3359-97 4B - 5B
Salt Spray ASTM B117-97 1000 Hours Minimum
Humidity ASTM D1735-99 1000 Hours Minimum
Water Immersion ASTM D870-97 240 Hours Minimum
Gravelometer GM 9508P 6 Minimum
Rust Spot GM 9632P Zero (Avg)
Throwpower GM 9535P 12 - 15 Inches
Cold Rolled Steel Lab Panels, Zinc Phosphate Pretreatment
0.8 Mil Average Film Thickness, Cure 20 Minutes @ 325°F
CORROSION RESISTANCE
Substrate / Pretreatment Salt Spray* 1000 Hours 40 Cycle** Corrosion
CRS/Zinc Phos/Chrome < 1 mm 2 - 3 mm
CRS/Zinc Phos/Non-Chrome < 1 mm 2 – 3 mm
CRS/Zinc Phos/DI Water 1 - 2 mm 2 – 3 mm
CRS/Iron Phos/Chrome 2 – 4 mm 3 – 5 mm
CRS/Iron Phos/Non-Chrome 2 – 4 mm 3 – 5 mm
CRS/Iron Phos/DI Water 2 – 4 mm 3 – 5 mm
CRS/Untreated 5 – 15 mm 9 – 11 mm
Galvanized/Zinc Phos/Chrome ----- 0 – 2 mm
Cure 10 Minutes @ 325°F, Cold Rolled Steel Lab Panels
(Average Total Scribe Creep)
* Salt Spray - ASTM B117-97