1.What revolutionary breakthroughs have been made in anti-corrosion performance?
Alloy co-penetration galvanizing
Technical principle: Add 6%Al+3%Mg to the traditional zinc solution to form a dense ternary eutectic phase (Zn/AlZn₂Mg/MgZn₂)
Performance improvement: Salt spray test life ≥4800 hours (traditional galvanizing only 1000 hours)
Incision self-repair ability improvement: corrosion rate is reduced to 1/5 of the traditional process.
Applicable scenarios: offshore platform pipelines, chemical plant acid mist environment.
Nano-sealing technology
Process: After galvanizing, SiO₂/TiO₂ nano-sol is dip-coated to fill the micropores of the zinc layer
Key data: Porosity from 15%→0.8% ◦ Acid and alkali resistance range is extended to pH=2~13.
2.What are the enhancements to the mechanical properties?
Pulse electrogalvanizing: zinc layer hardness ↑40%.
Low temperature plasma zincification: matrix strength retention rate ＞98%.
Gradient composite coating: impact energy increased to 35J (traditional 20J)
3.Are there any breakthroughs in high temperature adaptability?
Micro-arc oxidation galvanizing
Technical highlights: Generate a 50μm ceramic film on the surface of the zinc layer
High temperature performance:
Temperature resistance limit 250℃ (traditional zinc layer fails at 60℃)
Thermal shock test (250℃↔water cooling) 100 times without peeling
Organic silicon modified zinc coating
Application value: Applicable to steam heating pipes (working temperature 120~180℃)
4.What special features have been updated in the reform?
Conductive enhanced galvanizing
Graphene composite coating: Adding 0.5% graphene fragments ◦ The resistivity is reduced to 5×10⁻⁷Ω·m (pure zinc layer is 1×10⁻⁶Ω·m)
Application: anti-static pipes, grounding system elbows
Antibacterial galvanized elbow
Ag⁺/Cu²⁺ ion doping: antibacterial metal ions are dissolved in the zinc layer ◦
Bactericidal rate: Escherichia coli＞99.9% (24-hour contact).
Applicable: hospital water supply, food processing pipelines.
5.What are the recommendations for technology selection?
Harsh environment: Zn-Al-Mg alloy coating (offshore platform/chemical plant)
Precision system: pre-galvanized laser cold bending (semiconductor gas pipeline)
High temperature scene: micro-arc oxidation galvanizing (steam pipeline)
Hygiene requirements: antibacterial ion plating (medical food pipeline)