INDUSTRY COMPONENT

Fixed Electrode

Stationary electrode component in spark gap assemblies for controlled electrical discharge applications.

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Component Specifications

Definition
A fixed electrode is a precisely manufactured conductive component designed to maintain a stable position within a spark gap assembly, serving as one terminal for controlled electrical discharge processes. It provides consistent electrical contact and gap maintenance for applications requiring precise spark generation, such as in EDM machining, ignition systems, or surge protection devices.
Working Principle
The fixed electrode establishes a controlled gap distance with a movable or opposing electrode. When voltage exceeds the dielectric strength of the gap medium, electrical discharge occurs across the gap, with the fixed electrode providing stable geometry and electrical characteristics for repeatable spark generation.
Materials
High-conductivity copper alloys (C11000, C10100), tungsten-copper composites (WCu10-WCu50), or silver-tungsten alloys for high erosion resistance; surface may feature specialized coatings (chromium, nickel) for enhanced durability.
Technical Parameters
  • Length 10-150 mm
  • Diameter 3-25 mm
  • Hardness 80-120 HB
  • Surface Finish Ra ≤ 0.8 μm
  • Thermal Conductivity ≥ 200 W/m·K
  • Operating Temperature -40°C to 300°C
  • Electrical Conductivity ≥ 90% IACS
Standards
ISO 12100, DIN 8580, IEC 60204

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Fixed Electrode.

fixed electrode spark gap electrode EDM electrode stationary electrode electrical discharge component spark gap assembly part Fixed Electrode in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Spark Gap Assembly

A precision electrical component that creates a controlled spark discharge for ignition or timing purposes.

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Engineering Analysis

Risks & Mitigation
  • Electrical arcing causing component damage
  • Thermal degradation from repeated discharges
  • Erosion altering gap dimensions
  • Contamination affecting discharge consistency
FMEA Triads
Trigger: Excessive current density
Failure: Localized melting and pitting
Mitigation: Implement current limiting circuits and cooling systems
Trigger: Contaminant buildup on surface
Failure: Unstable discharge characteristics
Mitigation: Regular cleaning protocols and protective enclosures
Trigger: Thermal cycling stress
Failure: Micro-cracking and material fatigue
Mitigation: Use materials with matched thermal expansion coefficients and gradual thermal cycling

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.01 mm dimensional, ±0.005 mm concentricity
Test Method
Coordinate measuring machine verification, electrical resistance testing, spark gap consistency testing per IEC 60060

Buyer Feedback

★★★★☆ 4.5 / 5.0 (20 reviews)

"Testing the Fixed Electrode now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Fixed Electrode meets all ISO standards."

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Frequently Asked Questions

What is the primary function of a fixed electrode in spark gap assemblies?

The fixed electrode maintains precise gap distance and provides stable electrical contact for controlled spark generation, ensuring consistent discharge characteristics in applications like EDM machining or electrical protection systems.

How does material selection affect fixed electrode performance?

Material choice determines erosion resistance, thermal conductivity, and electrical properties. Copper alloys offer excellent conductivity, while tungsten composites provide superior wear resistance in high-energy discharge applications.

What maintenance is required for fixed electrodes?

Regular inspection for erosion, cleaning to remove carbon deposits, and verification of dimensional tolerances. Replacement is needed when erosion exceeds 10% of original dimensions or surface degradation affects discharge consistency.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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