I-Hielscher Ultrasound Technology

Ultrasonic Processing of Metal Melts

  • I-ultrasound yamandla ezinsimbi ezincibilikisiwe nama-alloys ibonisa imiphumela ezuzisayo ehlukahlukene njengokuhlela, degassing, nokuhlunga okuthuthukisiwe.
  • I-Ultrasonic igqugquzela ukuqina okungeyona-dendritic ezinsimbi zensimbi nezomile.
  • I-Sonication inezinzuzo ezibalulekile ekuhlungulweni kwezinto ezincane zezinhlamvu ze-dendritic nezinhlayiyana eziyinhloko ze-intermetallic.
  • Ngaphezu kwalokho, i-ultrasound yamandla ingasetshenziswa ngenhloso yokwehlisa insimbi yensimbi noma ukukhiqiza izakhiwo ezibonakalayo.
  • Okokugcina, amandla e-ultrasound athuthukisa ikhwalithi ye-castings.

 

Ukuqina kwe-ultrasonic

Ukwakhiwa kwezinhlaka ezingekho-dendritic ngesikhathi sokuqina kwe-metal melts kuthonya izinto ezibonakalayo njengezikhwepha, i-ductility, ukuqina, kanye / noma ubunzima.
I-ultrasonically yashintsha okusanhlamvu nucleation: I-cavitation ye-acoustic kanye namandla akhe we-shear okukhulu akhulisa izingosi ze-nucleation nenombolo ye-nuclei e-melt. Ukwelashwa kwe-ultrasonic (UST) we-melts kubangela ukuguquka kwe-nucleation engavamile nokuhlukaniswa kwama-dendrites, ukuze umkhiqizo wokugcina ukhombise kakhulu ukuhlunga okusanhlamvu okusanhlamvu.
I-cavitation ye-ultrasonic ibangela ngisho nokuhlanza kokungcola okungekho kwensimbi ku-melt. Lezo zingcola ziphenduka izingosi ze-nucleation, okuyizingxenye zokuqala zokuqina. Ngenxa yokuthi lawo maphuzu e-nucleation angaphambi kwe-solidification ngaphambili, ukukhula kwezakhiwo ze-dendritic akukhona.

Ukucubungula kwe-ultrasonic kwensimbi kucibilikisa ngcono isakhiwo sezinhlamvu.

I-Macrostructure ye-Ti alloy ngemuva kokwelashwa kwe-ultrasonic (i-Ruirun et al. 2017)

Ukuhlukaniswa kwe-Dendrite: Ukuqhaqha kwama-dendrites kuvame ukuqala empandeni ngenxa yokushisa kwezinga lokushisa kwendawo. I-UST ikhiqiza i-convection eqinile (ukudlulisa ukufudumala ngokunyakaza kwamanzi kagesi) nokugagagagagagagagungqika ku-melt, ukuze ama-dendrites ahlukaniswe. I-convection ingakhuthaza ukuhlukaniswa kwe-dendrite ngenxa yokushisa okwedlulele kwendawo kanye nokuhlukahluka kobunjwa futhi kukhuthaza ukusabalalisa kwe-solute. Amagagasi ama-cavitation ashaqisayo asiza ukuphulwa kwezimpande.

Ultrasonic Degassing of Metallic Alloys

Ukuhlukumeza omunye umphumela obalulekile wamandla ama-ultrasonics ezinsimbi zamanzi nama-alloys anesisindo. I-cavitation ye-acoustic idala ukushintshwa okuphansi kokucindezela / ukucindezela okukhulu. Phakathi nemijikelezo ephansi yokucindezela, amabhulabhisi amancane aphuzi avela ku-liquid noma slurry. Lezi zibhamu eziphumula zisebenza njenge-nuclei ekwakheni i-hydrogen namabhulebhu omphunga. Ngenxa yokwakhiwa kwamabhuleki amakhulu e-hydrogen, kuphakama ama-bubbles gas. Ukugeleza kwe-acoustic nokusakaza kusisiza ukujula kwale mibhobho phezulu nangaphandle kokuqhaqhazela, ukuze igesi ingasuswa futhi ukugxiliswa kwegesi kuncibilike kunciphise.
I-ultrasonic degassing iyanciphisa i-porosity yensimbi eyenza ngaleyo ndlela isibalo esiphezulu sempahla emkhiqizo wokugcina wensimbi / i-alloy.
I-ultrasonic degasification ye-aluminium alloys iphakamisa amandla okugcina okuqinekile kanye nokuductility kwezinto. Ama-power ultrasound systems asebenza njengendlela engcono kunazo zonke izindlela zokuhweba zokuhweba ngokuphathelene nokusebenza nokusebenza kwesikhathi. Ngaphezu kwalokho, inqubo yokugcwalisa isikhunta ithuthukiswa ngenxa ye-viscosity encane ye-melt.

Ukulungiswa kwe-Ultrasonic ye-alloy (Chofoza ukuze ukhulise!)

Izakhiwo ezicindezelayo ze-Ti44Al6Nb1Cr2V ngaphansi kwezikhathi ezihlukahlukene zokwazisa indodana.

I-UIP1000hd iyisetshenziswa esinamandla se-ultrasonic, esetshenziselwa ubuchwepheshe bokusebenza, i-nano structuring ne-particle modification. (Chofoza ukuze ukhulise!)

UDkt. D. Andreeva ubonisa inqubo yokwakhiwa kwe-ultrasonic
ngokusebenzisa i I-UIP1000hd i-ultrasonicator (i-20 kHz, i-1000W). Isithombe ngu-Ch. Wißler

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I-Sonocapillary Effect ngesikhathi sokuhlunga

Umphumela we-ultrasonic capillary (UCE) ensimbi yensimbi yindlela yokushayela ukususa i-oxide inclusions ngenkathi kuhlanzwa ama-ultrasonically-asetshenzisiwe we-melt. (Eskin et al. 2014: 120ff.)
Ukuhlunga kusetshenziselwa ukukhipha ukungcola okungekho okungcolile kwesikhumba. Ngesikhathi sokuhlunga, uketshezi kudlula izilinganiso ezihlukahlukene (isib. I-glass fibre) ukuhlukanisa iziqu ezingafuneki. Okuncane okulinganiselwe ubukhulu bomsindo, kungcono umphumela wokuhlunga.
Ngaphansi kwezimo ezivamile, ukuncibilika akunakwazi ukudlula isihlungi esinezinwele ezimbili ezinesayizi esincane kakhulu se-pore esingu-0,4-0,4mm. Kodwa-ke, ngaphansi kokucwiliswa kwe-ultrasonically-assisted ukuxubha kunikwe amandla ukudlulisa ama-pores obukhulu ngenxa yomphumela we-sonocapillary. Kulesi simo, ama-capillary ehlungiwe agcina ngisho nokungcola okungajwayelekile okungu-1-10μm. Ngenxa yokuhlanzeka okuthuthukisiwe kwe-alloy, ukwakheka kwe-hydrogen pores ku-oxides kugwenywe, ukuze amandla okukhathala kwe-alloy akhuphuke.
Eskin et al. (2014: 120ff.) Ibonise ukuthi ukuhlunga kwe-ultrasonic kwenza kube lula ukuhlanza ama-aluminum e-aluminium AA2024, AA7055, ne-AA7075 usebenzisa izihlungi ze-glass fiber ezinamafutha amaningi (ngezingqimba ezingu-9) ezine-0.6×0.6mm ama-pesh pores. Lapho inqubo yokuhlunga i-ultrasonic ihlanganiswa nokungezwa kwama-inoculants, ukulungiswa kokusanhlamvu kwesikhashana kutholakala.

Ultrasonic Ukuvuselela

I-ultrasonication iboniswe ukuthi iphumelela kakhulu ekuhlakazeni izinhlayiya ze-nano ngokufanayo zibe yi-slurries. Ngakho-ke, abahlakazeli be-ultrasonic yizinto ezivame kakhulu ukukhiqiza izingxenye ze-nano-reinforced.
Izinhlayiya ze-Nano (isib. Al2O3/ I-SiC, i-CNTs) isetshenziselwa ukuqinisa izinto. Izinhlayiya ze-nano zenezelwa ku-alloy encibilikisiwe futhi zahlakazeka nge-ultrasonically. I-acoustic cavitation nokusakaza kuthuthukisa ukuguqulwa kwamanzi nezinhlayiya zezinhlayiya, okuholela ekutheni kube namandla okuqina, ukunikeza amandla, nokuxilonga.

Idivayisi ye-Ultrasonic UIP2000hdT (2kW) ne-Cascatrode

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Izinsiza ze-ultrasonic zezinhlelo zokusebenza ezinzima

Ukusetshenziswa kwamandla ultrasound ku-metallurgy kudinga izinhlelo ezinamandla, ezinokwethenjelwa ze-ultrasonic, ezingasetshenziswa ezindaweni ezifunayo. I-Hielscher Ultrasonics inikeza imishini yezimboni ze-ultrasonic ebangeni lezimboni zokufakelwa kwezinhlelo zokusebenza ezisindayo nezindawo ezimbi. Zonke ultrasonicators zethu zakhiwe 24/7 operation. Ama-high power ultrasonic ama-Hielscher ahlanganiswe ngokuqina, ukuthembeka nokulawula okuqondile.
Ukufuna izinqubo – ezifana nokucwenga kwensimbi iyancibilika – zidinga amandla we-sonication okukhulu. Hielscher Ultrasonics’ ama-processor ultrasonic ama-industrial akhipha ama-amplitudes aphakeme kakhulu. Amplitudes angafika ku-200μm angaqhutshwa ngokuqhubekayo ku-24/7 ukusebenza. Nge-amplitudes ephakeme nakakhulu, i-sonotrode e-ultrasonic eyenziwe ngezifiso iyatholakala.
Ukuze i-sonication ye-liquid ephakeme kakhulu nokushisa okushisayo, i-Hielscher inikeza i-sonotrodes ehlukahlukene nezinketho ezenziwe ngezifiso ukuze kuqinisekiswe imiphumela efanele yokucubungula.
Ithebula elingezansi linikeza isibonakaliso somthamo wokucubungula we-ultrasonicators wethu:

Iqoqwana Ivolumu flow Rate Amadivayisi ezinconyiwe
10 kuya ku-2000mL 20 kuya ku-400mL / min UP200Ht, UP400St
0.1 kuya ku-20L 0.2 kuya ku-4L / min I-UIP2000hdT
10 kuya ku-100L 2 kuya ku-10L / iminithi UIP4000
na 10 kuya ku-100L / iminithi UIP16000
na sikhulu yinhlanganisela UIP16000

Xhumana nathi! / Cela Us!

Cela ulwazi oluthe xaxa

Sicela usebenzise ifomu elingezansi, uma ufisa ukucela ulwazi oluthe xaxa mayelana ne-homogenization yama-ultrasonic. Sizojabula ukukunikeza uhlelo lwe-ultrasonic ukuhlangabezana nezidingo zakho.









Sicela uqaphele wethu Inqubomgomo yobumfihlo.


Izincwadi / Izinkomba

  • I-Eskin, i-Georgy I .; U-Eskin, uDmitry G. (2014): Ukwelapha kwe-Ultrasonic ye-Alloy Melts. I-CRC Press, Technology & Ubunjiniyela 2014.
  • Jia, S .; I-Xuan, Y .; Nastac, L .; I-Allison, i-PG; Ukugijima, TW: (2016): Microstructure, izakhiwo mechanical nokuhlukana ukuziphatha 6061 aluminium alloy-based nanocomposite castings ezenziwe processing ultrasonic. I-International Journal of Research Metals Research, Umq. 29, Iss. 5: Umhlangano wonyaka we-TMS no-2016. 286-289.
  • Ruirun, C. et al. (2017): Imiphumela ye-vibration ye-ultrasonic kwi-microstructure kanye nezakhiwo zomshini we-high alloying TiAl. Sci. Umhlaka 7, 2017.
  • I-Skorb, EV; U-Andreeva, i-DV (2013): Ukwakhiwa kwe-bio-inspired i-ultrasound eyasizwa ukwakhiwa kwezipanji zokwenziwa. J. Mater. I-Chem. A, 2013,1. 7547-7557.
  • I-Tzanakis, I .; I-Xu, i-WW; Eskin, DG; Lee, PD; I-Kotsovinos, N. (2015): Ukubona nokuhlaziywa kwe-ultrasonic capillary in aluminium encibilikisiwe. Ultrasonic Sonochemistry 27, 2015. 72-80.
  • I-Wu, i-WW :; I-Tzanakis, I .; I-Srirangam, P .; I-Mirihanage, i-WU; Eskin, DG; I-Bodey, i-AJ; Lee, PD (2015): I-Synchrotron Quantification ye-Ultrasound Cavitation ne-Bubble Dynamics ku-Al-10Cu Melts.


Amaqiniso Okufanele Ukwazi

I-Power Ultrasound ne-Cavitation

Lapho amagagasi aphezulu kakhulu e-ultrasonic ehlanganiswa abe ngamanzi noma ama-slurries, isenzakalo se cavitation kwenzeka.
Amandla aphakeme, imvamisa ephansi ye-ultrasound yenza ukuthi ukwakheka kwamabhulebhu e-cavitation ku-liquids nama-slurries ngendlela elawulwayo. Amagagasi amakhulu e-ultrasound enza ukushintshaniswa kwengcindezi encane / ingcindezi ephakeme emanzini. Lezi zinguquko ezisheshayo zengcindezi zenza ama-voids, okuthiwa ama-bubble cavitation. I-ultrasonically induced bubbles cavitation ingacatshangwa njengama-microreactors amakhemikhali ahlinzeka ngamazinga aphezulu okushisa kanye nezingcindezi esikalini esincane, lapho kwakhiwa khona izinhlobo eziphilayo ezifana nama-radicals mahhala avela kumamolek'hule aqhekekile. Ngokwemvelo yezinto ezibonakalayo, i-cavitation ye-ultrasonic inekhono eliyingqayizivele lendawo yokucubungula izinga eliphezulu lokushisa (kuze kufike ku-5000 K) nokuphendula okuphezulu (500atm), kanti uhlelo luhlala lukhulu kakhulu ekamelweni lokushisa nokucindezela okukhulu. (cf. Skorb, Andreeva 2013)
Ukwelashwa kwe-ultrasonic (UST) ngokuyinhloko kusekelwe emiphumeleni yokucabangela. Nge-metallurgy, i-UST iyindlela ewusizo kakhulu ekuthuthukiseni ukwakhiwa kwezinsimbi kanye nama-alloys.