Leqhubu la maqhubu a ultrasonic ke makhetlo a mangata a ho sisinyeha ha mohloli oa molumo.Seo ho thoeng ke maqhubu a vibration ke palo ea metsamao e pheta-phetoang motsotsoana, yuniti ke Hertz, kapa Hertz ka bokhutšoanyane.Leqhubu ke ho hasana ha vibrate, ke hore, ho thothomela ho fetisoa ka maqhubu a pele.Kahoo maqhubu a leqhubu ke khafetsa ho thothomela ha mohloli oa molumo.Maqhubu a ka aroloa ka mefuta e meraro, e leng maqhubu a infrasonic, acoustic wave, le ultrasonic wave.Maqhubu a maqhubu a infrasound a ka tlase ho 20Hz;maqhubu a maqhubu a molumo ke 20Hz ~ 20kHz;maqhubu a maqhubu a ultrasonic a ka holimo ho 20kHz.Har'a tsona, maqhubu a infrasound le ultrasound hangata ha li utloe litsebeng tsa batho.Ka lebaka la maqhubu a phahameng le bolelele bo bokhutšoane ba maqhubu, leqhubu la ultrasonic le na le tataiso e ntle ea phetisetso le bokhoni bo matla ba ho kenella.Ke ka lebaka leo mochini oa ho hloekisa oa ultrasonic o etselitsoeng le ho etsoa.
Molao-motheo oa mantlha:
Lebaka leo ka lona mohloekisi oa ultrasonic a ka phethang karolo ea ho hloekisa litšila e bakoa ke tse latelang: cavitation, acoustic flow, acoustic radiation pressure le acoustic capillary effect.
Nakong ea ts'ebetso ea ho hloekisa, bokaholimo ba litšila bo tla baka timetso, peeling, karohano, emulsification le ho qhibiliha ha filimi e litšila holim'a metsi.Lintlha tse fapaneng li na le litlamorao tse fapaneng mochining oa ho hlatsoa.Lisebelisoa tsa Ultrasonic haholo-holo li itšetlehile ka ho sisinyeha ha li-bubble tsa cavitation (li-bubble tse sa phatlohang tsa cavitation) bakeng sa litšila tse sa khomaretsoeng ka thata haholo.Qetellong ea litšila, ka lebaka la ho thothomela ho matla le ho phatloha ha li-bubble tsa pulsed, matla a ho kopanya pakeng tsa filimi e litšila le holim'a ntho e senyeha, e nang le phello ea ho qhaqha le ho senya.Khatello ea mahlaseli a acoustic le phello ea acoustic capillary e khothalletsa ho kenngoa ha metsi a hlatsoang ka har'a libaka tse nyenyane tse pholileng le li-pores tsa ntho e lokelang ho hloekisoa, 'me molumo oa molumo o ka potlakisa ho arohana ha litšila holimo.Haeba ho khomarela litšila holimo ho batla ho le matla, leqhubu la micro-shock le hlahisoang ke ho phatloha ha bubble ea cavitation le hloka ho sebelisoa ho hula litšila holim'a metsi.
Mochine oa ho hloekisa oa ultrasonic haholo-holo o sebelisa "cavitation effect" ea mokelikeli-ha maqhubu a ultrasonic a phalla ka har'a mokelikeli, ka linako tse ling limolek'hule tsa metsi li otlolohile 'me ka linako tse ling li hatelloa, li etsa likoti tse nyenyane tse se nang palo, tse bitsoang "cavitation bubbles".Ha bubble ea cavitation e phatloha hang-hang, leqhubu la hydraulic shock wave (khatello e ka ba holimo ho 1000 atmospheres kapa ho feta) e tla hlahisoa.Tlas'a tšusumetso e tsoelang pele ea khatello ena, mefuta eohle ea litšila e khomarelang holim'a mosebetsi oa mosebetsi e tla tlosoa;ka nako e ts'oanang, leqhubu la ultrasonic Tlas'a ketso, ho tsosoa ha pulsating ea mokelikeli o hloekisang ho matlafatsoa, 'me ho qhibiliha, ho qhalakanngoa le emulsification ho potlakisa, kahoo ho hloekisa workpiece.
Melemo ea ho hloekisa:
a) Phello e ntle ea ho hloekisa, bohloeki bo phahameng le bohloeki bo tšoanang ba lisebelisoa tsohle tsa mosebetsi;
b) Lebelo la ho hloekisa le potlakile mme katleho ea tlhahiso ea ntlafatsoa;
c) Ha ho hlokahale ho ama metsi a hloekisang ka matsoho a batho, a sireletsehileng le a ka tšeptjoang;
d) Likoti tse tebileng, likoti le likarolo tse patiloeng tsa workpiece le tsona li ka hloekisoa;
e) Ha ho tšenyo e ka holim'a workpiece;
f) Boloka lihlapolli, matla a mocheso, sebaka sa mosebetsi le mosebetsi, joalo-joalo.
Nako ea poso: Jun-22-2021