Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of phosphating and coating in China. Please feel free to buy durable phosphating and coating made in China here from our factory. All customized products are with high quality and competitive price.
Process Specifications
|
Parameter |
Specification |
|
Coating Types |
Zinc phosphate, manganese phosphate, iron phosphate |
|
Application Methods |
Immersion or spray (process-specific) |
|
Coating Weight Range |
1.0–43 g/m² (zinc); 1.6–43 g/m² (immersion) |
|
Substrates |
Carbon steel, alloy steel, stainless steel, aluminum, zinc |
|
Key Properties |
Corrosion resistance, paint adhesion, lubricity, wear resistance |
|
Certifications |
IATF 16949, ISO 14001, ISO 45001, IECQ QC080000 |
Performance Highlights
Zinc phosphating – corrosion resistance
Zinc phosphate coatings provide enhanced corrosion protection for steel parts, serving as an excellent base for paint, powder coating, and rust-preventive oils .
01
Manganese phosphating – lubricity and wear resistance
Manganese phosphate coatings are applied when wear resistance and anti-galling properties are required. The coating retains oil, further improving anti-friction properties .
02
Iron phosphating – paint adhesion
Iron phosphate coatings serve as a base for painting, providing strong adhesion while requiring lower capital investment and fewer processing stages than zinc phosphating .
03
Conversion coating process
The chemical reaction converts the metal surface into a new nonmetallic surface - unlike paint or plating, it is chemically bonded to the substrate .
04
Foundation for subsequent coatings
Phosphate coatings are specified as the required base under paint, plastic, and rubber coatings in automotive and industrial applications .
05
Applications
Automotive Component Corrosion Protection
Brake components, suspension parts, and fasteners receive zinc phosphating prior to painting or oiling to provide corrosion resistance and paint adhesion.
Wear-Resistant Coating for Moving Parts
Gears, bearings, and sliding components receive manganese phosphating for lubricity and wear resistance, with the oil-retaining surface reducing friction.
Paint Base for Structural Components
Steel brackets and structural parts receive iron phosphating as a base for powder coating or wet paint.
Why Phosphating
Paint alone – poor adhesion to bare steel, corrosion spreads rapidly at coating defects
Phosphate + coating – phosphate provides adhesion and barrier protection; coating adds corrosion resistance and appearance.
For corrosion protection and coating preparation - phosphating is the production method.
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