Different types of EMI shielding spiral tubes

(Electromagnetic Interference) EMI Shielding Spiral Tubes represent a sophisticated category of components designed to protect sensitive electronic equipment from unwanted electromagnetic radiation. These specialized components combine advanced materials science with precise engineering to create effective barriers against electromagnetic interference while maintaining structural integrity in challenging environments.

Basic Types and Classifications

1. Standard Force Series (S Series) – Compression Force: 4.8 ±15% Kgf/in (OD 3.2mm, 25% compression)

• Diameter Range: 1.0 ~ 12.0mm
• Materials: Sn-plated BeCu, Ni-plated BeCu, Stainless Steel
• Applications: General industrial applications requiring balanced performance

2. Medium Force Series (M Series) – Compression Force: 2.0 ±15% Kgf/in

• Diameter Range: 1.0 ~ 10.0mm
• Materials: Same as S series
• Applications: Applications requiring moderate sealing pressure

3. Low Force Series (L Series) – Compression Force: 0.4 ±15% Kgf/in

• Diameter Range: 1.0 ~ 10.0mm
• Materials: Same as S series
• Applications: Precision equipment and sensitive applications

Material Selection and Properties of EMI Shielding Spiral Tubes

1. Stainless Steel Alloys – 301 Stainless Steel – High strength and corrosion resistance
   • Excellent spring properties
   • Good formability
   • Cost-effective option

• 304 Stainless Steel
  – Superior corrosion resistance
  • Excellent for food and medical applications
  • Good weldability
  • Wide availability
• 316 Stainless Steel
  – Enhanced corrosion resistance
  • Contains molybdenum for improved pitting resistance
  • Excellent for marine environments
  • Higher strength than 304
• 316L Stainless Steel
  – Lower carbon content than 316
  • Reduced risk of carbide precipitation
  • Improved weldability
  • Excellent for high-purity applications
• 17-7PH Stainless Steel
  – Precipitation hardened alloy
  • High strength-to-weight ratio
  • Excellent corrosion resistance
  • Good spring properties

2. Titanium Alloys – Ti-6Al-4V (Grade 5) – High strength-to-weight ratio
   • Excellent corrosion resistance
   • Biocompatible
   • Good high-temperature properties

• Ti-5Al-2.5Sn (Grade 6) – Higher strength than Grade 5
  • Improved high-temperature properties
  • Good weldability
  • Excellent corrosion resistance

2. Beryllium Copper Alloys – C17200 (Beryllium Copper) – High electrical conductivity
   • Excellent spring properties
   • Good corrosion resistance
   • High strength-to-weight ratio

• C17300 (Free Machining Beryllium Copper) – Improved machinability
  • Slightly lower conductivity
  • Good spring properties
  • Excellent corrosion resistance

2. Elgiloy® (Cobalt-Chromium-Nickel) – High strength and corrosion resistance

• Excellent spring properties
• Good fatigue resistance
• High operating temperature range

2. Inconel® (Nickel-Chromium) – Inconel 600 – Excellent corrosion resistance
   • High temperature stability
   • Good weldability
   • Excellent oxidation resistance

• Inconel 718 – High strength-to-weight ratio
  • Excellent corrosion resistance
  • Good formability
  • High temperature properties

Applications Across Industries of EMI Shielding Spiral Tubes

1. Аэрокосмическая и оборонная промышленность – Aircraft engines and landing gear systems

• Military communications equipment
• Satellite components
• Defense electronics

2. Автомобильный сектор – Fuel injection systems

• Transmission components
• Exhaust systems
• Electronic control units

3. Медицинские приборы – Diagnostic equipment

• Pumps and valves
• Patient monitoring systems
• Surgical instruments

4. Промышленное применение – Valve actuators

• Robotic systems
• Pneumatic devices
• Process control equipment

Technical Specifications and Requirements

1. Groove Size Specifications – Depth (L): +0.05 /-0 mm

• Width (G): +0.18 / -0.13 mm
• Width (W): +0 / -0.05 mm

2. Performance Metrics – Shielding Effectiveness: >100dB (100MHz-1GHz)

• Compression Ratio: 25% of diameter
• Temperature Range: -40°C to 200°C
• Corrosion Resistance: Salt spray tested

Производственный процесс

1. Material Selection and Processing – Raw material inspection

• Material cutting and preparation
• Quality control checkpoints

2. Manufacturing Steps – Rolling and forming

• Surface treatment
• Size customization
• Quality control
• Упаковка

Installation and Maintenance of EMI Shielding Spiral Tubes

1. Требования к установке – Cleanliness: Surface must be free from debris

• Alignment: Proper positioning required
• Compression: Maintain recommended 25% compression
• Environmental Protection: Consider operating conditions

2. Maintenance Procedures – Regular inspection schedule

• Cleaning protocols
• Performance monitoring
• Replacement criteria

Параметры настройки

1. Size Options – Diameter Range: 0.8mm to 50.0mm

• Length: Customizable
• Special sizes available upon request

2. Material Options – Base materials

• Surface treatments
• Inner core configurations
• O-ring specifications

Quality Control and Testing

1. Экологические испытания – Salt spray testing

• Humidity exposure
• Temperature cycling
• Performance verification

2. Performance Validation – Shielding effectiveness testing

• Mechanical property verification
• Environmental resistance testing
• Long-term reliability assessment

Material Properties Comparison

Материал	Strength	Устойчивость к коррозии	Temperature Range	Spring Properties	Стоимость
301 SS	Medium	Good	-200°C to 500°C	Excellent	Low
304 SS	Medium	Very Good	-200°C to 800°C	Excellent	Medium
316 SS	Medium	Excellent	-200°C to 800°C	Excellent	High
316L SS	Medium	Excellent	-200°C to 800°C	Excellent	High
17-7PH SS	High	Very Good	-200°C to 400°C	Excellent	High
Ti-6Al-4V	High	Excellent	-200°C to 400°C	Good	Very High
C17200	High	Good	-200°C to 300°C	Excellent	High
Эльгилой	Very High	Excellent	-200°C to 500°C	Excellent	Very High
Inconel 600	High	Excellent	-200°C to 1000°C	Good	Very High

Application-Specific Recommendations

1. Медицинские приборы – Implantable devices: Ti-6Al-4V or Elgiloy

• Surgical instruments: 316L or 17-7PH
• Diagnostic equipment: 304 or Beryllium Copper

1. Aerospace Applications – Structural components: Ti-6Al-4V or Inconel

• Electrical components: Beryllium Copper
• High-temperature applications: Inconel

1. Marine Environments – Seawater exposure: 316/316L or Titanium

• Corrosive atmospheres: Inconel
• Structural components: 17-7PH

1. High-Temperature Applications – Above 500°C: Inconel

• 400-500°C: Elgiloy
• Below 400°C: 316/316L

EMI shielding spiral tubes continue to evolve with advancing technology, offering increasingly sophisticated solutions for protecting sensitive electronic equipment. Their versatility, reliability, and effectiveness make them essential components in modern industrial applications, from aerospace to medical devices. Through careful material selection, precise manufacturing, and rigorous quality control, these components provide reliable protection against electromagnetic interference while maintaining structural integrity in challenging environments.