INDUSTRY COMPONENT

Metal Diaphragm

A precision metal diaphragm that converts electrical signals into mechanical vibrations in ultrasonic transducers.

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Component Specifications

Definition
A thin, flexible metal membrane designed to oscillate at ultrasonic frequencies when subjected to alternating electrical signals. It serves as the active vibrating element in piezoelectric or magnetostrictive ultrasonic transducers, generating mechanical vibrations that propagate as ultrasonic waves for applications such as cleaning, welding, measurement, and medical imaging.
Working Principle
The metal diaphragm operates on the principle of piezoelectric or magnetostrictive transduction. When an alternating electrical voltage is applied to the transducer's piezoelectric element (or a magnetic field to a magnetostrictive element), it induces mechanical strain, causing the attached metal diaphragm to vibrate at ultrasonic frequencies (typically 20 kHz to several MHz). These vibrations produce pressure waves in the surrounding medium (e.g., liquid or air).
Materials
High-strength alloys such as titanium (Ti-6Al-4V), stainless steel (e.g., 316L), aluminum alloys (e.g., 6061-T6), or beryllium copper, selected for fatigue resistance, corrosion resistance, and acoustic properties. Thickness ranges from 0.05 mm to 0.5 mm, depending on frequency and application.
Technical Parameters
  • Diameter 10 mm - 100 mm
  • Surface Finish Ra ≤ 0.4 μm
  • Frequency Range 20 kHz - 5 MHz
  • Resonance Stability ±1% over operating temperature
  • Thickness Tolerance ±0.005 mm
  • Operating Temperature -40°C to 150°C
Standards
ISO 18563-1, DIN EN 12668-1, ASTM E494

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Metal Diaphragm.

ultrasonic transducer diaphragm metal membrane piezoelectric component industrial vibration part ultrasonic cleaning welding transducer medical imaging diaphragm Metal Diaphragm Metal Diaphragm in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Ultrasonic Transducer

A piezoelectric device that converts electrical energy into high-frequency mechanical vibrations to atomize water in humidifiers.

View Product Details

Piezoelectric Sounder

An electronic audio signaling device that generates sound using piezoelectric effect

View Product Details

Engineering Analysis

Risks & Mitigation
  • Fatigue failure from high-cycle vibration
  • Corrosion in chemical environments
  • Resonance frequency drift affecting performance
  • Cavitation erosion in liquid applications
FMEA Triads
Trigger: Material fatigue from continuous ultrasonic cycling
Failure: Crack formation leading to diaphragm rupture
Mitigation: Use high-fatigue-strength alloys, implement stress relief designs, and conduct regular inspection
Trigger: Exposure to corrosive media (e.g., acids, salts)
Failure: Corrosion reducing thickness and altering vibrational properties
Mitigation: Select corrosion-resistant materials (e.g., stainless steel, titanium), apply protective coatings
Trigger: Improper mounting or over-torquing during installation
Failure: Distortion or stress concentration causing premature failure
Mitigation: Follow torque specifications, use alignment tools, and train personnel on installation procedures

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerances per ISO 2768-m, frequency tolerance ±2% of nominal
Test Method
Resonance testing via impedance analyzer, fatigue testing per ASTM E466, corrosion testing per ASTM G31

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 diaphragm in an ultrasonic transducer?

It converts electrical energy into mechanical vibrations at ultrasonic frequencies, generating sound waves for applications like cleaning, welding, or imaging.

How does material selection affect diaphragm performance?

Materials like titanium offer high strength and corrosion resistance for harsh environments, while aluminum provides lightweight performance; choice impacts frequency response, durability, and compatibility with media.

What are common failure modes of metal diaphragms?

Fatigue cracking from cyclic stress, corrosion in aggressive fluids, and resonance shift due to material degradation or contamination.

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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