Frequently Asked Questions
How many cleaning tanks do I need?
The number of cleaning tanks needed depends upon the volume of parts being cleaned, and how contaminated they are. If your application is very high volume and parts are very contaminated, 2 cleaning tanks may be warranted. However, the vast majority of applications require only a single ultrasonic cleaning tank.
How many rinse tanks do I need?
The number of rinse tanks needed depends largely on the type of result you are looking to achieve. If water or detergent spots are not a concern, then a single rinse tank is adequate. However, if water or detergent spots are not acceptable, at least 2 rinse tanks are needed, and 3 rinse tanks are normally used in ultra-clean applications.
Will ultrasonic cleaning remove the dirt on my parts?
The answer to this question relies almost entirely on the bond strength between the part, the available ultrasonic energy, and the contaminant. If the contaminant has no physical or chemical bond to the surface, then ultrasonic cleaners will capable of removing it. However, if the contaminant has a strong bond to the part, such as that found with burned carbons, then a detergent must be selected which will have the ability to loosen the bond to a degree where the existing ultrasonic cleaner can easily remove it. This is why the use of proper cleaning fluids is so important in the ultrasonic cleaner.
How do I dispose of old cleaning fluids?
In the case of a smaller manufacturer, the cleaning fluids can be collected and disposed of as oily detergent waste. However, many Zenith customers are successfully using Wastewater Evaporators to eliminate the waste which is generated by the ultrasonic cleaner. Since ultrasonic cleaning fluid is typically 95% water, this portion of the waste is evaporated. The 5% balance of the waste collects as a sludge in a collection tank which is later disposed of by traditional means. Zenith can supply wastewater evaporators to drastically reduce the amount of waste material which requires disposal.
What Are the Top Brands of Ultrasonic Cleaners for Automotive Use?
There is no independently verified, industry-wide “top brands” ranking for automotive ultrasonic cleaners, the market includes manufacturers ranging from small benchtop and consumer-grade equipment makers to industrial manufacturers building production-scale systems, and “best” depends heavily on what the buyer actually needs.
For automotive manufacturing and reconditioning applications specifically, the more useful question is what to evaluate rather than which brand name ranks highest: how long the manufacturer has built industrial (not consumer) equipment, whether systems can be customized to specific part geometries and production volumes, what warranty coverage applies to parts, labor, and transducers, and whether the manufacturer offers application testing on actual parts before purchase.
Zenith Ultrasonics has been manufacturing industrial ultrasonic cleaning systems in the United States since 1935, building both standard and custom-engineered systems sized to automotive production volumes.
Can You Recommend Reliable Aircraft Parts Cleaning Equipment?
Reliable aircraft parts cleaning equipment for manufacturing or MRO applications should be evaluated against the specific cleanliness, documentation, and process-repeatability requirements aerospace components demand, rather than any single equipment recommendation being universally correct. Structural components, turbine parts, and precision hardware typically require validated, repeatable cleaning processes with documented parameters, not just effective contamination removal.
When evaluating equipment for aerospace applications, look for manufacturers with documented experience in aerospace component cleaning, systems that support the process control and documentation aerospace quality requirements call for, and the ability to test the equipment against your actual parts before committing. Zenith Ultrasonics has engineered ultrasonic cleaning systems for aerospace industry applications; specific certifications or compliance claims for your program should be confirmed directly with Zenith’s engineering team based on your requirements.
How Effective Is an Ultrasonic Cleaner at Removing Rust from Different Materials?
Ultrasonic cleaning can be effective at removing light to moderate surface rust and oxidation, particularly when paired with a cleaning chemistry formulated for rust and oxide removal – but effectiveness depends on how deeply the corrosion has bonded to the surface, the base material, and the process parameters used. Light surface oxidation typically responds well to cavitation combined with an appropriate chemistry; heavy, deeply pitted, or long-standing corrosion may require mechanical pre-treatment before ultrasonic cleaning can fully address it.
Material matters as much as rust severity: chemistry aggressive enough to remove heavy rust from cast iron or steel may not be appropriate for aluminum or mixed-metal assemblies, where the wrong acid chemistry can cause its own surface damage. A practical follow-up question worth asking is how to prevent rust from reforming after cleaning – this is typically addressed with a cleaning solution or rinse formulated with a rust-preventative additive, or a separate rust-inhibiting dip immediately after rinsing, since a freshly cleaned bare-metal surface is briefly more vulnerable to flash rust than a soiled one.
What Are the Best Ultrasonic Cleaning Solutions for Rust Removal?
Effective rust-removal cleaning solutions are typically acid-based or chelating formulations designed to dissolve iron oxide, but the right solution depends on the base material being cleaned, a chemistry aggressive enough to strip heavy rust from steel can damage aluminum or other more reactive metals if it isn’t formulated with that compatibility in mind.
Rather than a single “best” solution, the practical approach is matching chemistry to both the rust severity and the part material, then confirming compatibility through testing before committing to a full production process. Zenith application engineers can help evaluate chemistry options alongside frequency and temperature settings for a specific rust-removal application.
What Are the Main Services Offered by Zenith Ultrasonics?
Zenith Ultrasonics designs and manufactures industrial ultrasonic cleaning systems for manufacturing and reconditioning applications. Its product range includes standard, semi-custom, custom-engineered, OEM, and automated ultrasonic cleaning systems.
Its services include application testing using customers’ actual parts, guidance on cleaning process and chemistry selection, system customization, cleaning-parameter optimization, and ongoing technical support. Zenith also backs its equipment with a two-year warranty.
With a history in ultrasonic cleaning dating to 1935, Zenith serves manufacturers across applications such as automotive, aerospace, medical, machined parts, metal stampings, and wire and strip cleaning. Its approach focuses on matching the cleaning system and process parameters to each customer’s parts, contaminants, and production requirements.
What Should I Consider When Choosing Ultrasonic Cleaners from Zenith Ultrasonics?
Choosing the right Zenith system starts with defining your application – part size, material, contamination type, required cleanliness level, and production volume – since Zenith builds around the application rather than offering a single universal system.
- Size of the largest and smallest parts you need to clean.
- Material of construction of the parts being cleaned.
- Type and severity of contamination (oils, particulate, oxides, flux, rust, etc.).
- Required quality/cleanliness level – zero-residue, near-zero-residue, or industrial-grade.
- Number of parts to be cleaned per shift, which determines whether a standard console, automated system, or custom line is appropriate.
The most reliable way to confirm a system fits your application is to have Zenith evaluate the cleaning process on your actual parts before you commit to a purchase. Talk to a Zenith applications engineer about your specific cleaning challenge.
Do I need rinsing tanks for my application?
Typically, a rinse operation is required to remove the detergents used in the ultrasonic cleaning tank from the parts being cleaned. Without a rinsing operation, detergent residues will remain on the parts. However, in some cases, this is a benefit since many cleaning agents include rust preventatives that prevent oxidation on parts.
Which ultrasonic frequency is best ?
The best ultrasonic frequency depends upon the type of contaminant being removed, the size of the holes and other details, the material of construction, and the weight of the part load. Generally, the heavier and dirtier the parts, the lower the frequency, but we can provide you with our multi-frequency systems to give you hybrid cleaning action.
Will ultrasonic cleaning systems damage my parts?
Certain softer metals can be damaged by ultrasonic cleaners. Highly-polished aluminum will be visibly damaged after only a few minutes, and items as hard as glass can also be damaged after extended ultrasonic exposure. There are processing techniques, such as continuous or intermittent oscillation, which can prevent such damage from occurring. Zenith recommends that such parts be test cleaned prior to purchasing a system. Test cleaning will give Zenith information to develop a process that will prevent damage to the parts, while getting the part as clean as required.
Can Zenith provide me with a demo system to test with?
In some cases, this is possible, but it is NOT recommended. Ultrasonic testing is not something that can be adequately performed by most Zenith customers. In most cases, our customers only have 1 or 2 cleaning fluids to test with, compared to Zenith’s 85+ cleaning agents. Also, the customer will only have 1 ultrasonic frequency and power combination to test with, rather than the unlimited test capabilities at the Zenith facility. As a result, Zenith recommends that parts be submitted for testing at the Zenith facility to obtain the most accurate result possible. Additional information regarding ultrasonic test cleaning can be found on the ultrasonic testing web page.
What Are the Best Industrial Cleaning Systems for Large Machinery?
The right system for large machinery components depends on part size, weight, contamination type, and production volume, there isn’t a single “best” system independent of those variables. Key factors to evaluate include tank capacity large enough to accommodate the part with proper clearance for solution circulation, load handling capable of managing heavy components (some automated systems handle loads well over 1,000 pounds), ultrasonic power sufficient for the tank volume and contamination load, and automation options if production volume justifies it.
Zenith manufactures large-capacity tanks, up to several thousand gallons in custom configurations, engineered around the specific part dimensions and production requirements rather than a fixed catalog size.
What Are the Best Ultrasonic Cleaners for Degassing Applications?
Degassing is a preparatory step, not typically a differentiating feature between ultrasonic cleaning systems. Fresh or freshly heated cleaning solution contains dissolved gases that reduce cavitation efficiency; running the ultrasonic system briefly before loading parts, or using a dedicated degas cycle where the equipment includes one – releases these gases so the solution reaches full cleaning effectiveness once the process cycle begins.
Most industrial ultrasonic systems support this as a standard operating step rather than a specialized capability unique to one manufacturer. When evaluating a system, the more meaningful factors for cleaning performance are ultrasonic frequency, power density, tank design, and cleaning chemistry – degassing capability alone is not typically a deciding factor between systems.
How Do I Choose the Right Heated Ultrasonic Tank for My Needs?
Choosing a heated ultrasonic tank comes down to matching the temperature range to your cleaning chemistry and contaminant, sizing the heater to the tank volume, and confirming the controls give you accurate, repeatable temperature holding.
- Required temperature range: Different cleaning chemistries and contaminants (oils, greases, carbon, polishing compounds) perform best within specific temperature bands; check the chemistry manufacturer’s recommended range.
- Heater wattage relative to tank volume: An undersized heater will struggle to reach or hold temperature during continuous production use.
- Digital vs. analog control: Digital temperature control with continuous readout supports more consistent, documentable results than a manual dial.
- Insulation and heat-up time: Relevant to energy use and how quickly the system is ready for a production shift.
- Safety features: Over-temperature protection matters for continuous-duty industrial use.
Can Ultrasonic Cleaning Machines Be Used for Industrial Purposes?
Yes. Industrial ultrasonic cleaning machines are widely used across manufacturing sectors including automotive, aerospace, medical device, electronics, and metal fabrication – but industrial systems differ substantially from small benchtop or consumer ultrasonic cleaners in construction, power, and duty cycle.
Industrial systems are built for continuous production use, with tank sizes, ultrasonic power, filtration, and often automation designed around specific manufacturing throughput requirements, not adapted consumer equipment. When evaluating whether ultrasonic cleaning fits an industrial application, the relevant questions are the part geometry and material, the contamination type and load, required cleanliness level, and production volume.
How Do Ultrasonic Cleaning Techniques Work in Zenith Ultrasonics’ Systems?
Zenith Ultrasonics’ systems use ultrasonic cavitation, in which high-frequency sound waves generate and collapse microscopic bubbles in a cleaning solution to help dislodge contaminants from part surfaces. Zenith engineers configure the frequency, cleaning chemistry, and automation around the specific application.
Where Zenith’s approach differs is in how cavitation is controlled and distributed. CROSSFIRE® Multiple Frequency Technology (US Patents 5,865,199 and 6,019,852) combines multiple ultrasonic frequencies within a single system to address uneven cavitation distribution and standing-wave patterns that can occur with a single fixed frequency, while simultaneously maximizing particle removal potential. This approach is designed to support more consistent cleaning results across complex part geometries, although actual results depend on the part material, contamination type, and application-specific process parameters
