60W 40kHz Horn Type Ultrasonic Cleaning Transducer for DIY Circuit Board Wash Tanks Immersible Box Packs and Lab Hardware Systems

GB-3840-4SH 60W 40kHz Industrial Ultrasonic Transducer

Product Overview

The GB-3840-4SH is a 40kHz 60W Langevin sandwich-type piezoelectric ultrasonic transducer engineered for industrial ultrasonic cleaning equipment and immersible transducer boxes. Constructed with high-stability PZT piezoelectric ceramics and precision-machined aluminum alloy front and rear masses, it efficiently converts electrical energy into mechanical acoustic vibrations to generate uniform cavitation in cleaning solutions.

Key Design Features

• Sandblasted Radiating Face: Ground with a fine abrasive wheel to maximize surface roughness and mechanical bond strength with epoxy resin on stainless steel tanks.
• Flared Horn Design: Tapered front mass profile optimizes acoustic impedance matching and amplitude distribution across the radiating surface.
• Insulated Structure: High-temperature, corrosion-resistant insulating epoxy prevents short circuits and ensures structural bond integrity under continuous operation.
• Thermal Control: Low dielectric loss prevents excessive internal heat build-up during long operational cycles.

Technical Specifications

Internal Construction & Materials

The transducer consists of standard prestressed Langevin components:

1. Rear Mass (Back Cap): Precision-machined aluminum block for acoustic wave reflection.
2. Piezoelectric Ceramic Elements: High-Q PZT ceramic rings.
3. Electrode Plates: High-conductivity copper contact lugs.
4. Dielectric Sleeve: Center insulating tube preventing internal arc discharge.
5. High-Tensile Center Bolt: Internal socket-head bolt providing uniform pre-stress compression.
6. Front Radiating Horn: Aluminum alloy mass for acoustic propagation into the liquid.
7. Threaded Mounting Base: Internal female thread for stud fastening.

Installation & Stud Welding Guide

Correct mounting ensures uniform acoustic transmission and prevents transducer debonding or tank plate cavitation erosion.

Stud Welding Methods:

• Capacitor Discharge (CD) Weld Stud: Attached to stainless steel (SUS) tank sheets using a CD stud welding gun.
• Drawn Arc Weld Stud: Attached to thick stainless steel plates via arc welding.

Step-by-Step Installation:

1. Weld the threaded stud perpendicular to the clean external surface of the tank.
2. Degrease and abrade the tank bonding area.
3. Apply a uniform layer of two-part high-temperature epoxy to the sandblasted transducer base.
4. Screw the transducer onto the welded stud and torque down until a continuous bead of epoxy emerges around the entire circumference.
5. Ensure the radiating base rests flush against the plate with zero angle deviation and no trapped air gaps.
6. Allow the adhesive to cure at ambient temperature or post-cure per epoxy specifications before applying electrical load.

Electrical Connection & Wiring

• Circuit Configuration: Connect all transducers in parallel.
• Lead Specifications: Use multi-strand copper wire with a cross-sectional area of 1.5 mm².
• Polarity Setup:
  • Connect all positive electrode terminals (marked +) to the Positive (+) output line of the ultrasonic generator.
  • Connect all negative electrode terminals (marked -) to the Negative (-) output line of the ultrasonic generator.

Applications

• Benchtop & Industrial Ultrasonic Cleaners: Automotive parts washers, PCB cleaning tanks, hardware degreasers.
• Submersible Transducer Packs: Immersible modular boxes installed inside existing processing vats.
• Multi-Stage Surface Treatment: Pre-electroplating degreasing, ultrasonic rinse tanks, medical instrument decontamination.

Available Product Configurations

Multiple transducer models, power capacities, frequencies (20kHz to 135kHz), and geometric profiles (cylindrical, horn type, stepped column) are available to match different cleaning bath depths and load conditions.

Manufacturing & Quality Control

• Raw Materials: Batch-controlled aluminum bar stock and stabilized PZT ceramics.
• Precision CNC Machining: Tight dimensional tolerances on front and back masses.
• Pre-Stress Control: Calibrated torque assembly for uniform compression.
• Parametric Testing: 100% parameter screening using precision impedance analyzers to verify resonant frequency, capacitance, and impedance limits.

Packaging & Shipping

Transducers are seated in custom high-density molded foam trays and packed in multi-wall corrugated master cartons to prevent mechanical shock and ceramic fractures during domestic and international transit.