Newly manufactured printed circuit boards (PCBs) must be cleaned to remove excess solder, rosins and other contaminants before placed into use. An ultrasonic cleaner is by far the fastest and most efficient method to safely clean these components when proper procedures are applied.
With trichloroethylene no longer available for cleaning PCBs, a substantial amount of posted information relates to cleaning, soaking and scrubbing using high purity alcohol, flux removal sprays and special biodegradable solvents. These manual processes are time consuming, could damage delicate components, can be environmentally unfriendly, and there is no guarantee that contaminants have been completely removed from complex PCB configurations. An ultrasonic cleaner such as the Elmasonic S series available from Tovatech is the practical answer to producing thoroughly clean high performance PCBs.
Owners of small engine repair shops more easily accommodate seasonal peaks in demand when they use an ultrasonic cleaner instead of manually scrubbing carburetors, engine blocks and other engine components in harmful solvents that can also present a disposal problem.
For example, fuel in the carburetors of lawnmower engines, outboard marine engines and snowmobile engines that sit idle during portions of the year may thicken and gum up small passages and orifices virtually impossible to reach by manual cleaning. In contrast, the cavitation action generated by an ultrasonic cleaner reaches any and all surfaces of these delicate instruments, safely restoring them to a like-new condition. Carbon, varnish and grease build-up on valves, cylinder heads and other engine parts are likewise safely removed even from aluminum surfaces thanks to the power of ultrasonic cleaning using biodegradable ultrasonic cleaning solutions.
Repair shop owners readying customers’ bicycles for spring and summer tours will save time by using an ultrasonic cleaner to remove grease and caked on dirt. Gears, sprockets, bearings, chains, cables – any and all parts can be restored to a like-new appearance thanks to the power of ultrasonic energy. Only a few minutes in an ultrasonic bath replaces tiresome and frequently dangerous soaking and hand scrubbing in solvent tanks, a timely process that more often than not yields unsatisfactory results.… Read the rest
As many researchers have found there can be some real challenges in dissolving or mixing samples in the lab. Technicians in healthcare facilities know that cleaning medical instruments prior to disinfecting and sterilizing also requires care to be certain that blood and tissue are completely removed, even from small cracks and crevices.
Ultrasonic cavitation can solve both challenges, and a new ultrasonic cleaner just released by Elma does it in a big way in a small package. Delivering 300 watts average ultrasonic power and available from Tovatech the microprocessor-controlled Elma S150 ultrasonic cleaner operates at 37 kHz and has a capacity of 3.75 gallons of solution in a 20” x 12” x 4” deep tank. It is the shallow depth that accounts for the high ultrasonic power per unit volume.… Read the rest
ELMA designed a production line ultrasonic cleaning system to remove residual plastic from molds used to make plastic eyeglass lenses, cleaning up to 1,000 molds per hour for reuse. The ultrasonic cleaning process begins after the lens blanks are removed from the polymerization oven, separated from the molds and sent for further processing.
The 15-step custom enclosed ultrasonic cleaning equipment system is configured as an automated production line consisting of 8 tanks plus a dryer. All ultrasonic cleaning is accomplished at 40 kHz. The first steps are in tank 1 where N-Methylpyrrolidone (NMP) ultrasonic cleaning solvent kept between 60 – 70˚C carries out the initial cleaning process.… Read the rest
Air and other gases contained in a freshly filled ultrasonic cleaning bath interfere with the cleaning performance of the ultrasonic cleaner. Evidence of these gases can be seen as bubbles that form on the inside of a standing glass of warm water. Ultrasonic cleaning is accomplished by the energy released from the violent collapse of tiny vacuum-filled bubbles. Air bubbles and dissolved air in the cleaning liquid absorb ultrasonic energy and inhibit the implosion of these cavitation bubbles, significantly reducing the cleaning effect.
Air can also be introduced as bubbles clinging to objects immersed in the ultrasonic bath.
Entrapped air can be removed two ways. Simply by running the ultrasonic cleaner a “degassing” occurs as heat and cavitation drive the air to the surface in the form of bubbles. If products to be cleaned are in the ultrasonic tank during this operation, the cleaning process is lengthened because a portion … Read the rest
Infection control is more crucial than ever as healthcare practitioners face increasing caseloads of diseases and viruses as well as treating victims of violence, accidents, natural and human-caused disasters. Proper cleaning of instruments used in treatments has two benefits, most important of which is to help ensure infections are not accidently transmitted to other patients. Moreover, reusing properly cleaned and disinfected instruments can help lower costs for treatment facilities.
In a three-step process the World Health Organization has established practical guidelines for infection control in healthcare facilities: cleaning, disinfection and sterilization. An ultrasonic cleaner is faster, safer, and more thorough than scrubbing, soaking, and even using steam. But as the WHO cautions, it is not a substitute for disinfecting and sterilization. Instead, it can be an important step in cleaning instruments after gross contamination is removed by manual or automatic scrubbing.
If you make a living providing commercial or residential window blind cleaning and are looking for a better way to do it, an ultrasonic blind cleaner especially designed for this job provides quick relief. Quick is the operative word here because ultrasonic energy will remove in minutes smoke stains, dust, grease, finger marks and other soils thanks to the power of ultrasonic cavitation.
Single or multiple blinds of any configuration – Venetian, accordion, insulating, roll up and vertical as examples – are placed in a basket then immersed in the cleaning side of a dual-tank ultrasonic cleaner filled with an ultrasonic cleaning solution. When the unit is activated transducers affixed to the underside of the tank create billions of tiny bubbles in the solution.… Read the rest
Another interesting note from a customer:
“Don’t knock my smock or I’ll clean your clock” was a panel line in a Calvin and Hobbes cartoon strip. As one who repairs antique clocks I checked the origin of the phrase and found that it usually signifies a violent encounter. Not a good idea when dealing with a customer’s heirloom time keeper.
Most of the clocks I clean and repair have brass works – the gears and frames – along with steel parts such as verges, spindles, spacers and springs. In my early days cleaning these parts after disassembly entailed dipping them into a solvent and using a soft brush to work away grime and dried lubricants. A messy process indeed, and not that satisfactory in terms of results.
An ultrasonic cleaner has proven far more satisfactory, but when using this technology for clocks and watches care must be taken not to … Read the rest
Here’s a note we got from a customer:
Years ago in my high school science lab we were taught that rust was a form of oxidation or corrosion, colorfully described as slow burning. To demonstrate, the teacher put some fine steel wool to the Bunsen burner, and sure enough, she was right!
Fast forward to today when I operate a small metal casting and fabricating shop that produces parts generally made out of gray iron and mild steel. Parts are degreased and loose burrs removed in my Elma S 120 ultrasonic cleaner, then stored for a short period of time before being painted.… Read the rest