INDUSTRY COMPONENT

Metal Shell/Body

Metal shell/body is a protective housing component in igniters that provides structural integrity, heat dissipation, and electrical insulation.

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Component Specifications

Definition
The metal shell/body in an igniter serves as the primary structural enclosure that houses internal ignition elements such as electrodes, insulators, and wiring. It functions to protect sensitive components from environmental factors (moisture, dust, mechanical impact), dissipate heat generated during spark generation, provide electrical grounding pathways, and maintain precise alignment of internal parts for consistent spark performance. Typically manufactured through precision stamping, casting, or machining processes with strict dimensional tolerances.
Working Principle
The metal shell acts as both a protective barrier and functional component by: 1) Containing high-voltage electrical discharge within designated spark gaps, 2) Conducting heat away from ignition points to prevent overheating, 3) Providing electromagnetic shielding to prevent interference with adjacent electronics, 4) Maintaining mechanical stability during vibration and thermal cycling through rigid construction.
Materials
Common materials include: Stainless steel (AISI 304/316 for corrosion resistance), Aluminum alloys (6061-T6 for lightweight applications), Cold-rolled steel with zinc plating (for cost-effective solutions), Nickel alloys (for high-temperature environments). Material thickness typically ranges 0.8-2.0mm depending on application requirements.
Technical Parameters
  • Length 15-60mm
  • Diameter 8-25mm
  • IP Rating IP67 minimum
  • Thread Type M10x1.0 to M18x1.5
  • Voltage Rating Up to 40kV
  • Wall Thickness 0.8-2.0mm
  • Temperature Range -40°C to 900°C
Standards
ISO 8854, DIN 72552, SAE J548, IEC 60079

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Metal Shell/Body.

igniter metal shell ignition housing spark plug body engine ignition component protective metal casing automotive ignition parts Metal Shell/Body Metal Shell/Body in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Igniter

A device that initiates combustion in a gas turbine combustion chamber by generating a high-energy spark or flame.

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Engineering Analysis

Risks & Mitigation
  • Corrosion in humid environments
  • Thermal expansion mismatch
  • Electromagnetic interference
  • Mechanical fatigue from vibration
  • Improper grounding leading to electrical hazards
FMEA Triads
Trigger: Material corrosion due to environmental exposure
Failure: Reduced structural integrity leading to component failure
Mitigation: Use corrosion-resistant materials (stainless steel/nickel plating) and protective coatings
Trigger: Thermal stress from repeated heating/cooling cycles
Failure: Cracking or deformation affecting spark gap alignment
Mitigation: Implement thermal expansion compensation designs and use materials with matched coefficients
Trigger: Vibration-induced mechanical fatigue
Failure: Loosening of internal components or shell cracking
Mitigation: Add vibration-damping features and conduct rigorous vibration testing during design validation

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05mm for critical dimensions, ±0.1° for angular alignment
Test Method
Pressure testing (5 bar minimum), High-voltage dielectric testing (40kV for 60 seconds), Thermal cycling (-40°C to 300°C for 100 cycles), Salt spray testing (500 hours per ASTM B117)

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of a metal shell in igniters?

The metal shell provides structural protection, heat dissipation, electrical insulation, and maintains precise component alignment for consistent spark generation.

Can different metal materials be used for igniter shells?

Yes, material selection depends on application requirements: stainless steel for corrosion resistance, aluminum for lightweight needs, nickel alloys for extreme temperatures.

How does shell design affect igniter performance?

Shell dimensions, wall thickness, and material conductivity directly impact heat dissipation, spark consistency, electromagnetic interference shielding, and durability.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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Metal Sheath/Casing Metallic Hub/Interface