316L Stainless Steel Cathode

High-Performance 316L Stainless Steel Cathode Plate

Materials of the Blade	316L Stainless Steel
Materials of the Conductive Beam	316L Stainless Steel Cladding Copper (ASTM C11000); Copper (ASTM C11000) Cladding 316L Stainless Steel or Carbon Steel
Effective Plate Area	2 Square Meters
Application for	Copper EW or ER
Service Life under Normal Conditions	15 Years

Traditional starter sheet production is gradually being phased out across modern copper smelters. Plant operators switch to permanent cathode solutions to upgrade copper purity, cut overall operating expenditure and match automatic copper stripping equipment. Our 316L stainless steel permanent cathodes are manufactured against strict industrial standards, boasting long service life, stable electrical conductivity and full compatibility with automatic production lines. We supply matched products for both ISA and OK electrolytic processes, helping your electrolytic workshop run at full capacity and steadily produce high-quality cathode copper.

The stable service performance of cathode plates originates from high-quality raw material selection and rigorous production control.

1. Strict Sourcing of Raw Materials

• Cathode Plate Body: Adopts standard 316L stainless steel directly sourced from TISCO, delivering stable material consistency, outstanding acid corrosion resistance and reliable material delivery cycles.
• Edge Sealing Strips: PPO raw particles are purchased from professional local PPO manufacturers to guarantee stable sealing performance.

2. Core Manufacturing Standards & Technical Benchmarks

All our cathode plates follow fixed factory-level technical standards to ensure consistent flatness, verticality, conductivity and corrosion resistance for every finished unit.

• The stainless steel sheath and inner copper rod form a complete metallurgical bond at the material interface. This composite structure greatly improves overall corrosion resistance and structural stability during long-term electrolysis operation.
• All cathode blades adopt 2B surface finish grade, providing a flat, uniform and smooth plate surface for consistent copper deposition.
• We use fully automatic flux-free robotic laser welding to join the stainless steel blade and conductive beam. The precision welding process avoids overheating deformation on the plate surface. All welds are smooth, neat and visually uniform after molding. This process firmly guarantees the overall mechanical strength, stable conductivity, blade verticality and plate flatness.

Strict Conductivity Resistance Tolerance Standards

We test electrical resistance for every finished cathode to ensure stable current transmission:

• Resistance between copper conductive end and blade bottom centerline point: ≤ 0.5 mΩ
• Resistance between copper conductive end and diagonal bottom point of the blade: 0.01 ~ 0.02 mΩ

3. Edge Strip Forming & Installation Steps

PPO raw particles are extruded into integrated edge strips via dedicated molds. Edge strips with tension bars are mounted on two sides of the cathode plate, with strip bottoms extending 2–3 mm below the blade edge.

Supplementary Note: We support three mainstream structural types of cathode conductive beams to fit ISA, standard OK and optimized OK processes. All material composition, metallurgical composite craft, cross-section drawings, size specifications and performance data of conductive beams are displayed on our independent dedicated page. View full details: Conductive Beam For Copper Electrowinning Cathodes

• Cathode Plate Material: 316L stainless steel (TISCO original)
• Plate Surface Grade: 2B finish
• Conductive Beam Outer Tube: TISCO / Qingshan Steel 316L stainless steel
• Conductive Beam Inner Core: ASTM C11000 copper, 99.90% purity
• Optional Conductive Beam Structures: Stainless steel jacketed copper, copper jacketed steel, self-developed three-layer composite structure
• Welding Mode: Automated robotic flux-free laser welding / manual acetylene welding (configured according to your production process)
• Applicable Technology: ISA process, OK process and other mainstream permanent cathode electrolysis systems
• Conductive Resistance Standard: ≤0.5 mΩ (centerline); 0.01–0.02 mΩ (diagonal)

Our After-Sales Service

 Free Drawings:
We provide AutoCAD drawings for free. Customization and optimization are available based on your requirements and our expertise. Drawings are confirmed before entering the commercial negotiation stage.

 Lead Time:
Fast delivery guaranteed. For example, 5000 cathode plates can be manufactured within 90 days.

 Payment Terms:
50% T/T in advance; balance to be paid before shipment. Bank guarantees can be arranged upon request.

 After-sales Service:
Quick response within 24 hours. Both remote support and on-site technical guidance are available.

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