What is a Cathode Wire?
A cathode wire is a key component in an electrostatic precipitator (ESP) system that is basically used to generate a corona discharge that ionizes dust particles in industrial exhaust gases. These ionized particles are then attracted to the collecting electrodes that effectively removing contaminants from the airflow. As a result this cathode wires play a crucial role in achieving clean air emissions and environmental compliance.
Why It Is Important for Industrial Electric Precipitation Accessories
Cathode wires are the “heart” of an ESP system. Their quality directly influences the efficiency of dust removal, energy consumption and overall equipment life. A high-grade ESP cathode wire ensures stable corona discharg and minimal spark discharge and reduced maintenance downtime which making it vital for high-performance industrial electrostatic filtration systems.
Material Properties of ESP Cathode Wire
Our cathode wires are made from top-quality materials, such as:
· High Carbon Steel Wire –this is for superior conductivity and mechanical strength.
· Stainless Steel (SS304, SS316, etc.) – It is for excellent corrosion resistance in harsh environments.
· Alloy Steel – It is for enhanced durability and temperature resistance.
All materials undergo rigorous treatment processes to achieve uniform surface finish and optimum electrical performance.
Main Features of ESP Cathode Wire
· High tensile strength and elasticity.
· Excellent corrosion and oxidation resistance.
· Uniform corona discharge performance.
· Optimized for stable operation in high-voltage ESP systems.
· Precision manufacturing with consistent wire diameter.
· Long service life and minimal maintenance needs.
Types of ESP Cathode Wire
Type No. | Material | Diameter (mm) | Tensile Strength (MPa) | Surface Treatment | Application Type | Max Temp (°C) |
CW-01 | High Carbon Steel | 2.5 | 800 | Galvanized | Power Plant ESP | 450 |
CW-02 | SS304 | 3.0 | 900 | Polished | Cement Industry | 600 |
CW-03 | SS316 | 2.8 | 950 | Passivated | Steel Plant | 700 |
CW-04 | Mn-Steel Alloy | 3.2 | 870 | Coated | Chemical Processing | 550 |
CW-05 | Low Carbon Steel | 2.0 | 780 | Zinc-Plated | Paper Mill | 400 |
CW-06 | Nickel Alloy | 3.5 | 1000 | Electro-Polished | Refineries | 750 |
CW-07 | Titanium Alloy | 3.0 | 1100 | Oxide Film | Waste Incineration | 800 |
CW-08 | Copper-Clad Steel | 2.6 | 850 | Copper Coating | Textile Mill | 500 |
CW-09 | Galvanized Iron | 2.2 | 760 | Zinc Coating | Pulp Industry | 420 |
CW-10 | Stainless 310S | 3.4 | 960 | Pickled | Petrochemical | 750 |
Why ESP Cathode Wire Is Unique Among Other Industrial Electric Precipitation Accessories
Unlike standard electric precipitation accessories, our ESP cathode wire is specifically engineered for high performance under demanding industrial conditions. With optimized corona characteristics, superior heat resistance, and easy installation, it ensures maximum particulate collection efficiency with minimized energy usage.
Cathode Wire Specifications - Model CW-ESP-400
Parameter | Specification | Tolerance | Standard | Application |
Wire Diameter | 2.5 mm | ±0.05 mm | ASTM B258 | ESP Discharge Electrode |
Material Composition | 316L Stainless Steel | - | ASTM A276 | Corrosive Environments |
Tensile Strength | 850 MPa | ±25 MPa | ISO 6892-1 | High Mechanical Stress |
Surface Finish | Electro-polished | Ra ≤ 0.2 µm | ASTM B912 | Reduced Particle Adhesion |
Operating Temperature | 400°C Max | - | - | High Temp ESP Units |
Electrical Resistivity | 0.73 μΩ·m | ±0.02 | ASTM B193 | Optimal Corona Generation |
Spool Length | 500 meters | ±5 meters | - | Production Efficiency |
Weight per Spool | 19.2 kg | ±0.5 kg | - | Shipping & Handling |
Corrosion Resistance | 1000 hr Salt Spray | No Corrosion | ASTM B117 | Marine Environments |
Certification | ISO 9001:2015 | - | Quality Management | Industry Standard |
Physical and Mechanical Properties of ESP Cathode Wire
Property | Typical Value | Description |
Tensile Strength | 780–860 MPa | Ensures high mechanical stability |
Electrical Conductivity | ≥ 14 MS/m | Enables efficient corona discharge |
Melting Point | 1400–1500°C | Suitable for high-temperature environments |
Coefficient of Thermal Expansion | 16×10⁻⁶ / °C | Maintains structural integrity |
Corrosion Resistance | Excellent | Enables long service life in harsh conditions |
Elastic Modulus | 200 GPa | Provides flexibility and shock resistance |
Density | 7.8 g/cm³ | Ensures strength-to-weight balance |
Industries Where ESP Cathode Wire Is Used
Power Generation Plants (coal-fired, biomass, thermal)
Cement Production
Metallurgical Industries
Chemical & Petrochemical Plants
Pulp and Paper Mills
Waste Incineration Plants
Foundries and Steelworks
Technical Advantages in Manufacturing ESP Cathode Wire (HEBEI OUTAI Environmental Protection Equipment Co., Ltd.)
At HEBEI OUTAI, we apply advanced technologies and stringent quality control in every stage of production:
Automated forming and straightening ensures precise geometrical accuracy.
Surface treatment processes enhance conductivity and resist corrosion.
High-voltage testing guarantees each wire’s corona discharge capability.
Customized manufacturing according to specific ESP models and environmental conditions.
These advantages make our cathode wire stand out as both durable and efficient.
FAQs About ESP Cathode Wire
Q1: How long does an ESP cathode wire typically last?
A: With proper maintenance, our cathode wires can last 5–10 years, depending on the environment and operating conditions.
Q2: Can cathode wires be customized?
A: Yes, Hebei Outai offers custom designs, materials and dimensions to meet the specific requirements of your ESP system.
Q3: How does cathode wire quality affect ESP performance?
A: High-quality wires ensure consistent corona discharge and reduce voltage fluctuation and greatly improving dust collection efficiency.
Q4: How often should cathode wires be inspected or replaced?
A:kindly Inspection every 6–12 months is recommended with replacement depending on wear, corrosion and discharge performance.
Q5: What makes Hebei Outai different from other manufacturers?
A: We combined advanced automatic production lines then strict quality testing, and tailored solutions to deliver superior which is very much reliable cathode wire products globally.
