Ng'anjo yotentha ya Microwave imapangidwa makamaka ndi makina owunikira, makina owongolera, bokosi lotsekera, jenereta ya microwave, bokosi lotenthetsera ndi thanki yosungiramo gasi.Bokosi lotenthetsera limapangidwa ndi mbale yagalasi yachitsulo chosapanga dzimbiri.Madzi ozizira amatha kuyenda mu sangweji pakati pa zigawo ziwiri za zitsulo zosapanga dzimbiri kuti akwaniritse kuziziritsa kwa bokosi lotenthetsera.
1. Mfundo ya microwave sintering zipangizo zadothi
Zimene zipangizo mayikirowevu akhoza kugawidwa m'zinthu zinayi: mayikirowevu kuwonetsera mayikirowevu kufala;kuyamwa kwa microwave;mayamwidwe pang'ono a microwave.Zitsulo zambiri zimagwera m'gulu loyamba, pomwe magalasi onse ndi zida za ceramic zimagwera m'magulu atatu omaliza.Thupi la ceramic likayikidwa m'munda wa microwave, mphamvu yotengedwa imatha kuwonetsedwa ndi zotsatirazi:
P = (2π fε ) ( E2/ 2) tani δ， Pamene mayikirowevu alowa zakuthupi, mphamvu yake amachepetsa ndi malowedwe kuya.Mtunda wochokera kuzinthu zakuthupi mpaka kuchepetsedwa kufika ku 1/e ya mphamvu ya microwave amatanthauzidwa ngati kuya kwa Dp ya microwave:
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DP = π tan δ (ε r/ε 0) 1/ 2
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Kumene, P ndi mphamvu ya microwave yotengedwa ndi thupi la ceramic;F ndi pafupipafupi;ε ndi dielectric yophatikizika yosasinthasintha;λ 0 ndi kutalika kwa microwave mu vacuum;E ndi mphamvu ya kumunda magetsi;tan δ ndiye kutayika kwa zida zadothi;Kutayika kwa tangent (chiŵerengero cha chiwopsezo cha kutayika kwa dielectric nthawi zonse) nthawi zambiri amagwiritsidwa ntchito kufotokoza kuthekera kwa kugwirizana kwa zinthu ku microwave.Pamwamba pamtengo wapatali wa tangent ndi, mphamvu yolumikizana pakati pa zinthu ndi microwave imakhala yolimba.
2. Mapangidwe a ng'anjo yotentha ya microwave yotentha kwambiri
Ng'anjo yotentha ya Microwave imapangidwa makamaka ndi makina owunikira, makina owongolera, bokosi lotsekera, jenereta ya microwave, bokosi lotenthetsera ndi thanki yosungiramo gasi.Bokosi lotenthetsera limapangidwa ndi mbale yagalasi yachitsulo chosapanga dzimbiri.Madzi ozizira amatha kuyenda mu sangweji pakati pa zigawo ziwiri za zitsulo zosapanga dzimbiri kuti akwaniritse kuziziritsa kwa bokosi lotenthetsera.Sensa ya kutentha yomwe timagwiritsa ntchito ndi RAYR3I1MSCL2U infrared thermometer ya kampani yaku America leitai.Dongosolo lowongolera limatha kuzindikira kuwongolera kwamanja ndi kuwongolera zokha.Pofuna kupewa mu ng'anjo ya ng'anjo ya mayikirowevu chatsekedwa pambuyo mayikirowevu Kutentha ng'anjo ku khomo ng'anjo ndi kutayikira mu mipata pakati pa ng'anjo, kuwonjezera pa Kutentha ng'anjo chitseko pokonza ndi kupanga kuonetsetsa mkulu dimensional mwatsatanetsatane ndi mwatsatanetsatane msonkhano, ife mu chitseko cha uvuni wa microwave chomwe chimayikidwa kuzungulira choke groove, kapangidwe kameneka kamatha kuchepetsa kutayikira kwa microwave.Kusankhidwa, kapangidwe ka minda ndi kutsekereza kwa jenereta ya microwave ndizinthu zazikulu musintering ng'anjokupanga.
3. Kusankha jenereta ya Microwave
Mag netron, Klystron ndi Gyrotron nthawi zambiri amasankhidwa mu zida zotenthetsera ma microwave.Monga "mtima" wa microwave sintering zipangizo, kusankha kwake kudzakhudza mwachindunji ntchito ndi mtengo wa zipangizo zonse.Zomwe zimagwiritsidwa ntchito pafupipafupi mu chipangizo cha microwave sintering ndi:
915 MHz, 2.45 GHz, 6 GHz, 28 GHz ndi 60 GHz, etc. Nthawi zambiri, magnetron akhoza kusankhidwa ngati mayikirowevu jenereta kwa mafurikwense otsika monga 915 MHz ndi 2.45 GHz, 6 GHz akhoza kusankhidwa ngati chubu liwiro malamulo, ndi mafunde apamwamba monga 28 GHz ndi 60 GHz akhoza kusankhidwa ngati maginito koyilo.
Pamene mafupipafupi ndi mphamvu za majenereta osiyanasiyana a microwave akuwonjezeka, chiŵerengero cha mtengo wawo ($/ Watt) chidzawonjezeka kwambiri.Ngati mkulu mphamvu mayikirowevu jenereta chofunika mu kamangidwe, Ndi bwino kugwiritsa ntchito pafupipafupi ndi otsika mphamvu jenereta kupeza ndi superposition mphamvu.
4.Kupanga mapangidwe otsekemera
Zomwe zimagwiritsidwa ntchito kwambiri mu ng'anjo ya microwave sintering zimayikidwa m'manda ndi mtundu wa bokosi.M'manda ufa kutchinjiriza kapangidwe ali ndi ubwino wabwino kutchinjiriza zotsatira.Komabe, pamene zitsanzo ndi sintered pa kutentha apamwamba, adhesion pakati zitsanzo ndi m'manda ufa n'zosavuta kuchitika.Pambuyo pazitsanzo za sintered, kukhudzana mwachindunji kudzachitika.Koma kapangidwe kameneka sikofanana ndi kamangidwe kamene kamakwirira ufa.Kuphatikiza mawonekedwe amitundu iwiri yotchinjiriza, tidapanga mawonekedwe amtundu wa bokosi.
Nthawi yotumiza: May-02-2017