Ultrasonic cleaning defines high precision scrubbing action to dislodge ingrained dirt and grime particles from the surfaces of sensitive items or places inaccessible to brushes etc. Ultrasonic Transducer operating on a set level of frequency generated by an oscillating diaphragm pulls this action off.
Ultrasonic transducers for cleaning are of two types; namely magnetostrictive and piezoelectric. The transducers are held to an ultrasonic diaphragm which radiates frequencies and function based on the system’s electrical efficiency.
The efficiency of the cleaning action may be a function of the constitution of both transducers. Magnetostrictive ones are fundamentally electromagnets constructed of alloy or heavy nickel core with wire wrapped around it.
The pulsing of electrical current via the wires induces vibration in the core at a frequency which is equivalent to the ultrasonic generator’s output frequency. This concurrence of frequencies brings about cleaning action inside the tank.
Piezoelectric variants are made up of titanate and lead zirconate. Titanate is a proven piezoelectric alloy that exhibits expansion and contraction when subjected to voltage and electrical frequency at an appropriate level.
The cleaning tank experiences ultrasonic action when vibration is induced in the ultrasonic diaphragm by the rapid expansions and contractions of the ultrasonic transducer.
Ultrasonic Transducer: Setting standards in cleaning industry
The efficaciousness of cleaning action is further determined by the bonding method of transducers and the electrical efficiency of the system.
Piezoelectric variants are held to the diaphragm with a metallurgic bond made up of a threaded and welded stud, and a high temperature epoxy. Magnetostrictive ones employ vacuum soldering to bond the diaphragm with the transducer’s base.
The vacuum brazed ultrasonic transducers for cleaning has an edge above the epoxy bonded counterpart. The later is highly vulnerable to an extremely abusive environment which can be characterized by dropping of objects on to the diaphragm bringing about damage to the bond. However, transducers have been fortified against any such abuse.
Ultrasonic cleaning occurs when ultrasonic cavitation is produced in the cleansing fluid by the conversion of electrical energy into mechanical vibrations.
Piezoelectric transducers are highly efficient in converting almost the entire electrical current into mechanical vibrations and most transducers are constructed of this one. Magnetostrictive ones owing to the bulky size of the generator have an energy efficiency of 50-60% only and may also call for air-conditioning to optimally maintain the temperature within.
The frequencies also play a vital role in determining the nature of the object to be cleaned through Ultrasonic cleaning. Low frequencies are deployed to clean cumbersome parts randomly which suffer from heavy contamination and they give rise to uneven cleaning action inside the tank.
Higher frequencies are responsible for effective and evenly distributed cleansing action. Such frequencies possess the capability to thrash away dirt from minute blind holes, threaded regions and other manually inaccessible regions.
The sound produced from the tank in ultrasonic transducers for cleaning will depend upon the strength and intensity of operating frequency. Loud, audible noises can be muffled by providing for acoustic insulation for reduction in decibel levels. Ultrasonic Transducer is the one stop solution to all cleaning needs.
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