Corrosion
Corrosion is the chemical deterioration of metal surfaces as they react with their environment. It is a major problem, particularly in the valve industry: corrosion in valves can cause sealing problems and higher operating costs. So how do we prevent it? This is where coating technologies come in.
The Role of Coating Technologies
Coating technologies protect metal surfaces from corrosion by isolating them from corrosive agents such as oxygen, moisture and chemicals. Cleaning and smoothing the surface before coating is essential. Cleaning methods include abrasive blasting, chemical cleaning and mechanical cleaning.
"In our country, the direct and indirect financial loss caused by corrosion is 40 billion dollars every year." Bünyamin Halaç, Board Member, Turkish General Galvanizers Association
Coating Types Used in the Valve Industry
Organic Coatings
Epoxy coatings: high chemical resistance and good adhesion, but their UV resistance can be low.
Polyurethane coatings: highly flexible and impact-resistant, but their performance can drop at low temperatures.
Inorganic Coatings
Zinc coatings: high corrosion resistance, applicable by galvanizing, but their performance can drop at high temperatures.
Chrome plating: high hardness and wear resistance, but application can be costly.
Applications
Industrial valves: chemical plants and oil and gas pipelines use coatings with high chemical resistance that withstand harsh environments.
Domestic valves: stainless steel coatings are common in water installations, while heating systems use coatings that withstand high temperatures.
Future Technologies
Nanotechnology: nanomaterials make thinner and more effective coatings possible, with self-healing properties and improved chemical resistance.
Smart coatings: coatings that repair themselves after scratches and damage provide long-lasting protection.
Coating technologies make corrosion prevention possible in the valve industry, extending valve life while lowering maintenance costs. The aim is to produce safer, longer-lasting valves with innovative coating solutions in the future.