Umgaqo wokucoca wokucoca i-ultrasonic ngokuyinhloko ngenxa yokuqaliswa kwe-ultrasonic vibration kumanzi okucoca, obangela "i-cavitation" kumanzi okucoca. Umbane onamandla omatshini owenziwe yi "cavitation" ukhupha ukungcola komatshini kunye nokungcola okuhlukeneyo okufakwe kwi-workpiece. Ukucocwa kwe-Ultrasonic ayinayo kuphela i-cavitation effect, kodwa ihamba kunye nemiphumo enzima kakhulu yomzimba kunye neekhemikhali.
Into ebizwa ngokuba yi "cavitation" ibhekisela kwi-sparse kunye ne-dense state xa i-alternating isandi somsindo wamaza e-ultrasonic isasaza kumanzi. Kwimeko exineneyo, ulwelo luphantsi koxinzelelo oluhle (malunga noxinzelelo oluncinci lwe-atmospheric), ngelixa kwindawo enqabileyo, ulwelo luphantsi koxinzelelo okanye uxinzelelo olubi. Ngokuqhelekileyo, ulwelo luqulethe umlinganiselo othile wegesi. Kwimeko enqabileyo, i-bubble ikhula kwaye ifunxe ngakumbi Igesi ebolileyo kulwelo; xa iphinda icinezelwe, amaqamza ayaqhubeka nokuncipha. Ngexesha lale nkqubo, intshukumo yamasuntswana elulwelo ihambelana ngokungafaniyo neradiyasi yeqamza eyancipha ngokuthe ngcembe. Ke ngoko, xa iradiyasi isondela ku-zero, isantya sentshukumo yobunzima kufuneka ithiyori isondele kwi-infinity. Ukuba le ntshukumo ikhawulezayo iyema ngequbuliso xa iqamza livaliwe, amandla ekinetic agxininiswe kumthamo omncinane aya kukhululwa, ngokuyinxenye abe ngamandla obushushu, ngokuyinxenye abe ngamandla oxinzelelo. Ngeli xesha, amaza othuso olungqukuva asasazeka ukusuka kumbindi weqamza elivaliweyo. Kweli nqanaba, uxinzelelo ngamawaka e-atmosphere. Ukuba i-ultrasonic frequency yi-20KHz, le cavitation iya kwenzeka ngamaxesha angama-20,000 ngesibini. Ngoko ke, akunzima ukuqonda ukuba amaza e-ultrasonic anamandla okucoca.
