INDUSTRY COMPONENT

Target disc

Target disc is a critical rotating component in X-ray tubes that converts electron beam energy into X-ray radiation through bombardment.

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Component Specifications

Definition
The target disc is a precisely engineered rotating anode component within X-ray generation systems, typically made from high-density refractory metals. It serves as the focal point where high-energy electron beams impact, converting kinetic energy into X-ray photons through bremsstrahlung and characteristic radiation processes. The disc's rotation distributes thermal load across its surface, preventing localized overheating and enabling higher power operation.
Working Principle
When high-voltage accelerates electrons toward the target disc, their kinetic energy converts to X-rays upon impact. The rotating design spreads heat over a larger surface area, allowing continuous operation without thermal damage. Different target materials produce specific X-ray spectra based on atomic number and electron configuration.
Materials
Tungsten-rhenium alloys (W-Re), molybdenum (Mo), or copper (Cu) with tungsten facing. Common compositions: W-5%Re, W-10%Re. Purity: 99.95% minimum. Density: 17-19 g/cm³ for tungsten alloys.
Technical Parameters
  • Diameter 50-200 mm
  • Thickness 3-10 mm
  • Maximum Power 50-150 kW
  • Rotation Speed 3000-10000 rpm
  • Surface Finish Ra ≤ 0.8 μm
  • Focal Spot Size 0.1-2.0 mm
  • Thermal Capacity 200-800 kJ
Standards
ISO 16526, DIN 6836, IEC 60522

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Target disc.

X-ray target disc rotating anode tungsten target X-ray tube component electron beam target medical imaging parts industrial radiography Target disc Target disc in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

X-ray Target

A component in a medical linear accelerator that generates X-rays when bombarded by high-energy electrons.

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Engineering Analysis

Risks & Mitigation
  • Thermal stress cracking
  • Surface pitting from electron bombardment
  • Bearing failure in rotation mechanism
  • Cooling system malfunction
FMEA Triads
Trigger: Insufficient cooling or excessive power
Failure: Thermal deformation or melting of target surface
Mitigation: Implement temperature monitoring, automatic power reduction, and enhanced cooling systems
Trigger: Material fatigue from thermal cycling
Failure: Crack propagation leading to disc fracture
Mitigation: Use fatigue-resistant alloys, implement gradual heating/cooling cycles, regular non-destructive testing
Trigger: Bearing wear or lubrication failure
Failure: Irregular rotation causing uneven heating
Mitigation: Scheduled bearing replacement, vibration monitoring, proper lubrication maintenance

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm diameter, ±0.01 mm thickness, ±0.5° angular alignment
Test Method
Radiographic inspection, thermal cycling tests, dimensional verification, material composition analysis

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

Why does the target disc rotate in X-ray tubes?

Rotation distributes heat across the disc surface, preventing localized melting and enabling higher power operation by improving thermal dissipation.

What materials are best for target discs?

Tungsten-rhenium alloys are preferred for their high atomic number (efficient X-ray production), high melting point, and thermal conductivity. Rhenium improves ductility and reduces cracking.

How often should target discs be replaced?

Typical lifespan is 10,000-50,000 operating hours depending on usage patterns, cooling efficiency, and maintenance. Regular inspection for surface degradation is recommended.

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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