Contact customer service, you can place an order right away

for sample orders, 100% advance payment is required. For bulk orders, 30% deposit before production, the balance before shipment. We also accept Paypal ， Western Union ，and Trade Assurance service from Alibaba.com

EXW, FOB, CIF, DAP and DDP.

all our products are under CE, FCC, KC，ISO,regulations and compliance to RoHs, REACH.

Yes. OEM and ODM is welcome. But sometimes we will set a MOQ for OEM order. a brand authorization letter from your side is needed.

for bench-top ones, usually we have several pieces in stock. So we could ship it in 3 days if the quantity is less than 10pcs. If quantity is bigger than 10pcs, welcome to consult us about the production time. For industrial ultrasonic cleaners, it takes about 5-7 working days to produce.

12 months warranty for Granbo ultrasonic cleaner. Any technical problem during warranty time, free replacement parts will be sent to
your door. And technical support is also available after 1 year.

Yes, you are also welcome! Usually we do not limit a MoQ for testing, just decide the QTY by yourself and your sales

Courier freight depends on the quantity, weight and carton size and your area, please call your local DHL, Fedex, UPS or TNT and ask a price If you buy some samples, usually we will offer you a CIF price

You are always advised the customers to choose FedEx, DHL ,UPS, TNT ,if your order is not so large, if your order is large, by air or by sea maybe can save a lot of shipping cost. And the shipping cost depending on the total weight of your order

In order to get a reliable quality products, please tell and list all your product quality requirements and standard your market requested before we produce the samples for you. Usually the sample quality is agreed by both of us .Tell us if you need a special approval in your market. We prefer to supply a reliable quality products to our customers and do not compete by a lower price immolating the quality

Yes, you’re welcome to send the work pieces for trial cleaning. We’ll send you video and report
after testing . It’s free service.

 Contact customer service and get it

In a process termed “cavitation”, micron-size bubbles form and grow due to alternating positive and negative pressure waves in a solution. The bubbles subjected to these alternating pressure waves continue to grow until they reach resonant size. Just prior to the bubble implosion, there is a tremendous amount of energy stored inside the bubble itself. Temperature inside a cavitating bubble can be extremely high, with pressures up to 500 atm. The implosion event, when it occurs near a hard surface, changes the bubble into a suction jet about one-tenth the bubble size, which travels at speeds up to 400 km/hr away from the hard surface. With the combination of pressure, temperature, and velocity, the jet frees contaminants from their bonds with the substrate. Because of the inherently small size of the jet and the relatively large energy, ultrasonic cleaning has the ability to reach into small crevices and remove entrapped soils very effectively.

Spray
Use The Method Of Spraying Water Droplets To Quickly Remove Surface Dirt, Which Is Conducive To Ultrasonic Cleaning And Easier To Act On Deep Dirt

Bubbling
Release Air Bubbles At The Bottom Of The Tank, Which Is The Water Flow In The Tank, Which Is Easier To Carry Away Dirt

Drying
After The Cleaning Is Completed, The Cleaning Process Can Be Completed Faster By Drying Or Blowing Dry.

Soak
Heating And Soaking Cleaning Pieces To Soften Dirt For Easy Cleaning

Filter Circulation System
Suitable For Long Time, Uninterrupted Work, Saving Water Resources

Lift
Automatic Lifting And Cleaning Parts, Easier To Handle Heavy Objects, Saving Manpower And Material Resources

Toss
Throwing Up And Down, The Contact Area Between The Cleaning Liquid And The Stain Will Become Larger

Roller Cleaning
Multi-angle Cleaning To Speed Up The Cleaning Process

1).minimizes the use of manual labor
2).makes cleaning and degreasing without the use of organic solvents
3).reaches every area of product and remove all types of dirt
4).shorten processes such as extraction, dispersion, purification, and chemical
reactions.
5).eliminates costly mechanical and chemical cleaning of heat exchangers

The frequency of the transducer is inversely proportional to the wavelength, the wavelength is related to the cavitation diameter, and the cavitation diameter is related to its explosion pressure.
Generally, the higher the frequency, the smaller the wavelength, the smaller the cavitation diameter, the lower the explosion pressure, but the higher the cavitation density and the better permeability.

Ultrasonic transducer (17-23KHz): It is used to clean large objects, heavy dirt, and wear-resistant hard surfaces.
Related industries: magnetism, auto maintenance, textile industry, etc.
Note: The working noise is loud, so sound insulation treatment is required.

Ultrasonic transducer (25-28KHz): used to clean the dirt with heavy dirt and hard surface.
Related industries: mechanical processing, electroplating, catering industry, etc.

Ultrasonic transducer (33-60KHz): used for cleaning objects with light dirt, requiring surface protection
Related industries: precision parts, glass glasses, electronic components, circuit boards, etc.;

Ultrasonic transducer (68-200KHz): It is used to clean the dirt very lightly and requires a high degree of protection of the surface structure.
Related industries: semiconductors, high-precision parts, etc.

Ultrasonic cleaners come in 3 categories,
Mini type for cleaning contact lenses, etc. These are very light duty cleaners with small
transducers and very simple generators that are not very efficient.They should never be usedfor critical cleaning jobs.
The second type are the dental cleaners and small lab size tabletop cleaners, these have aheaver transducer and a better generator and are efficient in cleaning small parts and labglass.
The third type is the industrial heavy-duty type with very heavy compound transducersand rugged generators that produce high wattage per transducer. These clean more efficientlyand can be used for production cleaning. Tanks are heavy-duty welded 304 or 316L stainlesssteel with overflows and drain ports. Our KR series are this type.

Choose the suitable ultrasonic frequency according to the above suggestions.Inner size of cleaning tank: It should be bigger than cleaning objects’ size.
Core element: The core element of an ultrasonic cleaner is ultrasonic transducer. The qualityof ultrasonic transducer influences the service life of an ultrasonic cleaner greatly.
Ultrasonic power: The larger the volume of solution, the more ultrasonic power will be neededfor cleaning. Most cleaners run at an average power of 50 to 100 watts per gallon, so thelarger the tank the more power you need. Simply to say, we can think more power usuallyindicates faster and more effective cleaning.

“Degassing” is the initial removal of gases present in the solution. Non removal or “trapped Gas” in the cleaning solution leads to gaseous cavitation where bubbles cannot effictivly form, useful cavitation occurs after gasses have been removed from the cleaning solution, leaving a vacuum in the formed bubble. When the high pressure wave hits the bubble wall, the bubble collapses; it is the energy released by this collapse that will assist a detergent in breaking the bonds between parts and their soils.

“Cavitation” is the rapid formation and collapse of millions of tiny bubbles (or cavities) in a liquid. Cavitation is produced by the alternating high and low pressure waves generated by high frequency (ultrasonic) sound. During the low pressure phase, these bubbles grow from microscopic size until, during the high pressure phase where they are compressed and implode.

A. Once filled with water the ultrasonics should be left operating for a few minutes so that excess air is driven from the liquid. Tiny bubbles will be seen to rise to the surface but this is gaseous cavitation and not suitable for cleaning. At the end of the de-gasing period, a hissing sound and a churning of the liquid surface (cold boiling) should occur indicating vaporous cavitation.At this point switch off the ultrasonics add chemical as required and repeat this cycle. Once cold boiling returns the liquid is now in the correct mode for ultrasonic cleaning.

There are many considerations important to ultrasonic cleaning. Optimising these variables will produce the best cleaning. The most important decisions to be made are choosing the proper cleaning solution, cleaning at the right temperature for the correct amount of time, and choosing the right size and type of ultrasonic cleaner.

Soils adhere to the parts… if they didn’t, the soil would just fall off the parts! The purpose of the solution is to break the bonds between parts and their soils. Water alone has no cleaning properties. The primary purpose of the ultrasonic activity (cavitation) is to assist the solution in doing its job. An ultrasonic cleaning solution contains various ingredients designed to optimise the ultrasonic cleaning process. For example, increased cavitation levels result from reduced fluid surface tension. An ultrasonic solution will contain a good wetting agent or surfactant.

Modern ultrasonic cleaning solutions are compounded from a variety of detergents, wetting agents and other reactive components. A large variety of excellent formulations are available, designed for specific applications. Proper selection is crucial for acceptable cleaning activity and to preclude undesirable reactivity with the part being cleaned. A crucial part of Granbosonic’s service is that we work with the client offering advise on cleaning solutions as necessary.

The energy released by cavitation is converted to heat and kinetic energy, generating high temperature gradients in the solution, and can create hazardous conditions with flammable liquids. Acids, bleach and bleach by-products should generally be avoided, but may be used with indirect cleaning in a proper indirect cleaning container, such as a glass beaker, and appropriate care. Acid and bleach will damage stainless steel tanks, and/or create hazardous conditions.

With certain cautions, ultrasonic cleaning is considered safe for most parts. While the effects of thousands of implosions per second is very powerful, the cleaning process is safe since the energy is localized at the microscopic level. The most important cautionary consideration is the choice of cleaning solution. Potentially adverse effects of the detergent on the material being cleaned will be enhanced by the ultrasonics.

The solution level should always be maintained. Maintaining the proper solution level provides optimum circulation of solution around parts, and protects heaters and transducers from overheating or stress.

Wet the frosted portion of a glass slide with tap water and draw an “X” with a No. 2 pencil from corner to corner of the frosted area. Making sure that the tank is filled to the fill line, immerse the frosted end of the slide into fresh cleaning solution. Turn on the ultrasonics. The lead “X” will begin to be removed almost immediately, and all lead should be removed within ten seconds.

The primary purpose of the unit heater is to maintain a solution temperature between cleaning cycles. The tremendous energy released by cavitation will generate the heat for cleaning.

Cleaning solutions should be replenished when a noticeable decrease in cleaning action occurs, or when the solution is visibly dirty or spent. A fresh batch of solution at each cleaning session is usually not required.

Cleaning time will vary, depending on such things as soil, solution, temperature and the degree of cleanliness desired. Highly visible removal of soils should start almost immediately after the ultrasonic cleaning action begins. Cleaning time adjustment is the easiest (and most often misapplied) factor used to compensate for process variables. Although new application cycle duration can be approximated by an experienced operator, it usually must be validated by actual use with the chosen solution and the actual soiled parts.

Cut three small pieces of aluminum foil about 4″ x 8″ each. Fold each piece over a rod that you will use to suspend the foil in the tank. A clothes hanger works well. Your cleaner should be filled with an ultrasonic cleaning solution, degassed, and brought up to normal operating temperature. Suspend the first “square” in the center of the tank and the other two a couple of inches from each end of the tank. Make sure that the tank is filled to the fill line, and turn on the ultrasonics for about one minute. Remove the foil and inspect: All three pieces of aluminum foil should be perforated and wrinkled to about the same degree.

Items being cleaned should never be placed directly on the tank bottom. Transducers (which produce the ultrasound) are sometimes bonded to the bottom of the tank. Items resting directly on the tank bottom can damage the transducers and/or reduce cavitation. Additionally, a tray or beaker will position the item within the optimal cleaning zone of the tank. The tray or beaker will also hold the load together and allow for easy, no-touch removal, draining and transport of the items to the next step in the cleaning process.

Rinsing is recommended to remove any chemical residue, which could be harmful to the part. Parts can be rinsed right in your ultrasonic cleaner, using a clean water bath, or in a separate tub containing tap, distilled or deionised water.

Heat usually enhances and speeds up the cleaning process, and most detergent solutions are designed to work best at an elevated temperature. The best way to find the optimum temperature, which will give you the fastest, cleanest and safest results, is to run tests. Usually, the best results are within the 50°C to 75°C range.

Most poor cleaning usually results from improper control of one or more process variable(s); such as choosing the wrong detergent solution, insufficient heat, or not allowing enough time for the particular soil to be removed. If you suspect that your ultrasonic cleaner is not cavitating properly, there are two simple tests you can perform: the “glass slide” test and the “foil” test.

Low solution levels can seriously damage your cleaner. Running your unit continuously runs the strong risk of lowered levels as the solution evaporates, especially when heated. Getting into the habit of shutting off the ultrasonics when not in use, and monitoring the solution level when in use, will yield many years of trouble free service from your ultrasonic cleaner.