Ultrasonic Inline Cleaning of Solder Wires
In solder wire manufacturing, surface cleanliness is critical to ensure optimal performance during soldering. Hielscher ultrasonic inline wire cleaners effectively eliminate contaminants such as drawing lubricants, oxides, dust, or metal particles in a continuous, contact-free process. The result: exceptionally clean wires that support superior solderability, consistent flux performance, and reliable solder joints – essential for high-performance electronic, automotive, and industrial applications.
Clean Surfaces in Solder Wire Manufacturing
In the manufacture of solder wires – whether for electronics, automotive, or high-precision aerospace applications – contaminants such as residual drawing lubricants, oxides, dust particles, or microscopic metallic debris can compromise solderability, flux performance, and ultimately, joint reliability.
Even trace levels of surface contaminants can inhibit wetting, promote void formation, or alter the alloy’s behavior during melting. Consequently, precision cleaning is not just a quality control measure – it is an essential step in the production chain.
Hielscher ultrasonic inline wire cleaners ensure consistent cleanliness of solder wires at high throughput, without relying on aggressive chemicals or time-intensive, inefficient batch processes.
Enhance cleanliness, process efficiency, and wire quality with Hielscher wire cleaning systems!
Ultrasonic inline cleaning system USCM700 for intense cleaning of endless materials such as solder wires.
Benefits of Ultrasonic Inline Cleaning for Solder Wire Manufacturers
Implementing ultrasonic inline cleaning offers solder wire manufacturers a number of advantages:
- Higher product quality: Consistently clean wires, i.e. solder wires, result in fewer defects, better flux performance, and improved solder joint integrity.
- Production Output: Overcome the bottleneck of cleaning with ultrasonic inline wire cleaning.
- Process continuity: Inline integration enables uninterrupted production without the need for batch-wise cleaning steps.
- Compact integration/Retirofitting: Hielscher Ultrasonics inline cleaners feature a modular, space-saving design that allows a retrofit into existing production lines, even under severe spatial constraints.
- Energy and cost efficiency: Reduced reliance on thermal or chemical treatments leads to lower operational costs and waste.
- Environmental-friendliness and safety: Ultrasonic systems minimize or eliminate the need for aggressive solvents or acidic baths.
Application fields of the Hielscher ultrasonic inline cleaners
- Endless profiles
- Wires
- Rods
- Strips
- Fibres
- Medical wires
- Punched metal strips
- Bond wires
- Precious metal wires
- Other endless materials
Ultrasonic Inline Cleaning in Solder Wire Production: Working Principle and Mechanism
Ultrasonic cleaning is based on the phenomenon of acoustic cavitation. Acoustic cavitation is generated by high-intensity ultrasound and causes the formation and implosive collapse of microbubbles in a liquid medium. These rapid micro-implosions generate localized high-pressure shock waves and fluid microjets that effectively dislodge from the wire surface and disperse the dirt particles in the cleaning liquid (e.g., water or detergent).
The unique sonotrode design (see technical drawing on the left) for Hielscher inline cleaning systems transmits powerful amplitudes and creates intense acoustic cavitation, which removes drawing lubricants, soaps, dust and dirt particles reliably and efficient from the endless material that passes through the cleaning sonotrode.
Integrated inline into a wire drawing or winding system, Hielscher ultrasonic inline cleaners operate continuously, treating the wire adapted to the speed of the wire line.
- high efficiency, high throughput
- adjustable amplitude for best effects
- high amplitudes of up to 20 μm for intense cleaning
- removes even heavy, sturdy contamination
- contact-less, yet mechanical cleaning method
- for various diameters
- operation with water or mild cleaning agents
- robust belt filter (optional)
- air wipes for drying
- continuous operation
- robustness
- low maintenance
- built for 24/7/365 operation
Clean wire means better solder.
Hielscher Ultrasonics makes it possible!
Literature / References
- Brochure “Ultrasonic Wire Cleaning – Hielscher Ultrasonics
- Leighton, Timothy; Birkin, Peter; Offin, Doug (2013): A new approach to ultrasonic cleaning. International Congress on Acoustics, January 2013.
- Fuchs, John F. (2002): Ultrasonic Cleaning: Fundamental Theory and Applications. In: Proceedings of Precision Cleaning May 15-17, 1995, Rosemont, IL, USA.
Frequently Asked Questions
What is Solder Wire?
Solder wire is a metallic alloy, typically based on tin (Sn) with other elements like lead (Pb), silver (Ag), or copper (Cu), used as a filler metal in soldering processes. It melts at relatively low temperatures to form metallurgical bonds between metal surfaces.
What is Flux-Cored Solder Wire?
Flux-cored solder wire is solder wire that contains a core filled with flux – a chemical agent that promotes wetting and removes surface oxides during soldering. This eliminates the need for separate flux application.
What is Soldering with Flux?
Soldering with flux involves applying flux – either separately or via flux-cored solder wire – to clean and prepare metal surfaces. This ensures proper wetting and bonding by preventing oxidation during solder melting and solidification.
Hielscher Ultrasonics manufactures high-performance ultrasonic homogenizers from lab to industrial size.


