What are the types of surface anti-corrosion treatment processes
Release time:
2022-07-28
There are various surface anti-corrosion treatment processes, mainly including electroplating, phosphating, blackening, hot-dip galvanizing, Dacromet, spraying, sandblasting, organic coating, cold galvanizing, alloy catalytic solution, etc. Here is a detailed introduction to these processes: Electrogalvanizing. Forming a zinc coating on the metal surface through electrolysis provides aesthetic and anti-corrosion effects.
There are various surface anti-corrosion treatment processes, mainly including electroplating, phosphating, blackening, hot-dip galvanizing, Dacromet, spraying, sandblasting, organic coating, cold galvanizing, alloy catalytic solution, etc. Here is a detailed introduction to these processes:
Electrogalvanizing. Forming a zinc coating on the metal surface through electrolysis provides aesthetic and anti-corrosion effects.
Phosphating treatment. Generate a layer of phosphate chemical conversion film on the metal surface to enhance corrosion resistance and improve the adhesion of the paint.
Blackening treatment. A low-cost surface treatment method typically used in conjunction with rust proof oil, but with limited anti-corrosion ability.
Hot dip galvanizing. Soak metal products in molten zinc to form a thick zinc layer, providing long-term anti-corrosion effects.
Dacro. A surface treatment technology with strong anti-corrosion and heat resistance, but low surface hardness.
spray. Spray a layer of anti-corrosion coating on the metal surface to provide a certain degree of anti-corrosion effect.
Sandblasting. Cleaning metal surfaces with high-speed spraying of small abrasive particles can prevent corrosion, but usually does not produce an anti-corrosion coating.
Organic coating. Form an organic coating on the metal surface to prevent oxidation and corrosion.
Cold galvanized. Form a thin layer of zinc coating on the metal surface to provide good anti-corrosion effect.
Alloy catalytic liquid. Tightly integrated with the workpiece, providing strong corrosion resistance while maintaining the original mechanical properties.
Immersion molding. The plastic coating process combines anti-corrosion and aesthetics, with a cost close to hot-dip galvanizing.
Spray molding. Electrostatic powder spraying is widely used in metal surface treatment, with moderate cost and a variety of colors.
These technologies each have their own characteristics and are suitable for different applications and needs. Choosing a suitable surface treatment process requires consideration of factors such as material type, usage environment, cost-effectiveness, etc.
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