Ehisen: Senior manufacturer of titanium anode in China
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Henan Yingzhong Manufacturing Co., Ltd. is located in Wuzhi County, Jiaozuo City, the “Hometown of Chinese Yellow‑River Culture” in Henan Province. Specializing in non‑ferrous metal smelting and rolling processing, the company mainly manufactures sacrificial anodes made of magnesium alloy, aluminum alloy and zinc alloy, alongside other core products.
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Why Choose Us
Supporting Global Industrial Growth
Ehisen provides solutions trusted by industries worldwide. Our products stand out for their exceptional quality, tailored designs, and dedicated customer support.
Proven Expertise
15 years of specialized experience in titanium anodes.
Reliable Quality
Every product is certified and tested for your peace of mind.
Innovative Techniques
Advanced coating methods for maximum performance.
Dedicated Support
Technical assistance and consultation available in English.
Spreading Trust Globally
Connecting Industries Across 87 Countries
Our titanium anodes are trusted by industries worldwide from Europe to Southeast Asia for their unparalleled quality and reliability.
Ready to refine your titanium anode products? Contact us today for a free consultation!
Ehisen specializes in producing high-quality titanium anodes with advanced coatings for various industries, ensuring durability, reliability, and superior performance.
Common Questions
FAQs
Have questions? Learn more about our titanium anode solutions, certifications, and support.
- Chlor-alkali industry: To produce chlorine and caustic soda by saltwater electrolysis.
- Electroplating: For surface treatment and coating metals.
- Seawater desalination: Used in processes like electrodialysis and reverse osmosis.
- Water treatment: For wastewater purification and electrochemical oxidation.
- Cathodic protection: To prevent metal structures from corrosion.
- Organic and electrochemical synthesis: For producing specific organic compounds.
1. Excellent Catalytic Performance
Chlorine Evolution Reaction (Cl₂): In the chlor-alkali process, the main reaction at the anode is:
2Cl−→Cl2(g)+2e−
Ruthenium-iridium coatings have low overpotential and high efficiency for chlorine generation.
Oxygen Evolution Reaction (O₂): In water treatment and electroplating, the anode reaction is often:
2H2O→O2(g)+4H++4e−
The coating is also effective at catalyzing oxygen generation.
2. Corrosion Resistance
- Ruthenium and iridium are noble metals that resist corrosion, even in harsh environments with strong acids, bases, or chlorine.
3. Long Service Life
- The coating bonds well to the titanium base and doesn’t peel off easily, ensuring a long lifespan and reducing maintenance costs.
- Ruthenium (Ru): Excellent for chlorine evolution (Cl₂), used in chlor-alkali and chloride-rich environments.
- Iridium (Ir): Great for oxygen evolution (O₂), used in water treatment and plating processes.
- Ratio matters: Adjusting the Ru-Ir ratio changes the anode's catalytic performance, corrosion resistance, and cost.
1. Check Materials and Coating Specifications
Base Material: Ensure the anode uses pure industrial titanium, like Gr1 or Gr2, for its corrosion resistance and strength.
Coating Ratio: Ask for the Ru/Ir ratio (e.g., 70:30 or 50:50) and coating thickness (usually 5-10 microns).
Test Reports: Request material composition and coating analysis, such as spectrometry results.
2. Test Product Performance
Electrochemical Testing:
Ask for performance reports showing:
Chlorine evolution potential (Cl₂)
Oxygen evolution potential (O₂)
Durability tests (e.g., accelerated lifespan testing)
Check efficiency and stability under your application conditions.
Corrosion Resistance:
Review tests showing the coating’s resistance in harsh environments, such as acidic, alkaline, or chloride-rich solutions.
1. Suitable Water Sources
- Tap Water:
- The most common water source due to its stable quality and easy availability.
- Tap water is usually pre-treated with fewer impurities, making it ideal for the equipment.
- Groundwater:
- Can be used, but proper pre-treatment is necessary to remove impurities and hardness.
- In some regions, groundwater may contain high hardness or iron and manganese ions, which could affect performance.
2. Water Quality Requirements
- TDS (Total Dissolved Solids):
- The total dissolved solids content should be below 200mg/L to prevent scaling on the electrodes.
- Hardness:
- Water hardness should be less than 120mg/L (as CaCO₃) to reduce calcium and magnesium deposits.
- Impurities:
- Suspended particles, sand, and other impurities must be removed. A filter is recommended for pre-treatment.
- Heavy Metal Ions:
- Avoid water with high concentrations of iron, manganese, or other heavy metal ions.
- Chloride Ions:
- Adequate chloride ion levels (usually maintained by dissolving salt) are required to ensure electrolysis efficiency.
1. Electroplating
- Use: Metal plating and recycling plating solutions.
- Why Ir-Ta Coating:
- Ensures stable current for uniform plating.
- High corrosion resistance prevents damage from plating solutions.
- Key Reaction: Mn++ne−→M(metal deposition)
2. Aluminum Foil Formation
- Use: Surface etching of aluminum foil for capacitors.
- Why Ir-Ta Coating:
- Provides uniform current for precise etching.
- Resists acidic environments, extending electrode life.
- Key Reaction: Al+3H2
O→Al(OH)3 +3H++3e−
3. Copper Foil Production
- Use: Making high-precision copper foil for batteries and circuit boards.
- Why Ir-Ta Coating:
- Ensures consistent current for precise thickness control.
- Resists corrosion in acidic or alkaline environments.
- Key Reaction: Cu2++2e−→Cu
4. Cathodic Protection (Including Soil Environments)
- Use: Preventing corrosion of buried pipelines and metal structures.
- Why Ir-Ta Coating:
- Works well in harsh soil conditions with corrosive electrolytes.
- Provides stable current for long-term protection.
- Key Reaction: M→Mn++ne−(corrosion prevented)
Uniformity Testing:
- Microscopic Analysis: Use SEM to check for cracks or gaps in the coating.
- Resistance Testing: Measure surface resistance to ensure even coating thickness.
- Thickness Measurement: Use XRF to check if the coating meets the design standard.
Durability Testing:
- Accelerated Life Test: Run the anode in high current and corrosive solutions to check for peeling or performance loss.
- Corrosion Test: Place the anode in acidic or chloride-rich solutions to assess material loss.
- Real-World Testing: Simulate actual operating conditions to evaluate long-term performance.
- Current Density: Higher current density requires thicker coating.
- Working Environment: Acidic or corrosive solutions need thicker coatings.
- Lifespan Requirement: Thicker coatings last longer but cost more.
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Maintenance methods vary by industry and conditions, but here are general and industry-specific approaches:
General Maintenance Methods
Regular Cleaning:
- How: Use a soft brush or sponge to remove dirt and deposits.
- Caution: Avoid hard tools that might damage the platinum coating.
Acid Cleaning:
- How: Soak the anode in diluted acid (e.g., 5% hydrochloric acid) to remove scale or mineral buildup.
- When: Useful in water treatment systems with frequent scale formation.
Inspect Coating:
- How: Use optical or resistance testing equipment to check coating thickness and integrity.
- Frequency: Perform once a year to ensure stable performance.
Industry-Specific Maintenance
Precious Metal Plating:
- Issue: Impurities from the plating solution may build up on the anode.
- Method: Clean the surface monthly to maintain plating uniformity.
Water Treatment:
- Issue: Calcium scale and other deposits may block the anode surface.
- Method: Perform acid cleaning every 3 months to restore efficiency.
Hydrogen Production:
- Issue: High current density may wear down the coating.
- Method: Check coating thickness every 6 months and replace if needed.
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1. Checking Current Output Performance
Method 1: Current Measurement
- Steps:
- Use a clamp ammeterto measure the output current of the anode.
- Compare the readings with the design values or operating parameters to ensure the current is within the expected range.
- Frequency:
- Inspect every quarter or half-year, especially in high-current environments.
- Note:
- If the current is too low, it could indicate power supply issues, coating damage, or increased electrolyte resistance.
Method 2: Potential Testing
- Steps:
- Measure the potential difference between the protected structure and a reference electrode (e.g., Cu/CuSO₄ electrode).
- Confirm that the protected structure remains within the safe potential range (e.g., below -850 mV for steel structures).
- Purpose:
- Indirectly evaluate the current distribution and performance of the anode.
Method 3: Voltage Drop Test
- Steps:
- Measure the voltage drop at the anode connection points.
- If the voltage drop is too high, it could indicate corrosion or increased resistance in cables or connections.
2. Checking Coating Wear
Method 1: Visual Inspection
- Steps:
- Remove the anode and visually check for signs of coating peeling, discoloration, or cracks.
- Compare the current condition with the original state to assess physical wear.
- Frequency:
- Inspect annually or every two years, especially in harsh environments like high salinity or acidic conditions.
Method 2: Coating Thickness Measurement
- Steps:
- Use an X-Ray Fluorescence (XRF) deviceto measure the coating thickness.
- Compare with the initial coating thickness to evaluate the wear rate.
- Purpose:
- Accurately detect remaining coating thickness and predict anode lifespan.
Method 3: Resistance Testing
- Steps:
- Test the surface resistance or overall conductivity of the anode.
- A significant increase in resistance may indicate coating damage or decreased uniformity.
Method 4: Electrochemical Performance Testing
- Steps:
- Place the anode in a simulated electrolyte and measure overpotential and current efficiency.
- Assess the anode’s performance under working conditions.
- Steps:
