Ingabe i-terminal ecindezelwe ebandayo ibhekane nokushaqeka okukhulu ngesikhathi sokwelashwa kokushisa?
Izenzakalo Nezimbangela Zokwethuka Okuphezulu Kwezinga Lokushisa
Ukushaqeka kokushisa okuphezulu kubonakala kakhulu njengokwenyuka okusheshayo kokushisa komzimba ophelele esikhathini esifushane, okuholela ochungechungeni lwezinguquko zomzimba. Izimbangela eziyinhloko kanye nezibonakaliso yilezi ezilandelayo:
Izimo Zenqubo Ejwayelekile: Izinkinga zivame ukwenzeka ngesikhathi sezinqubo zokuhlanganisa ibhodi le-PCB, njengokufaka i-wave soldering kanye nokufaka i-reflow soldering. Ekufakeni i-wave soldering, amazinga okushisa okushisa angafinyelela ngaphezu kuka-100°C, kanti amazinga okushisa aphezulu angafinyelela ngisho naku-280°C okwesikhashana; endaweni yokushisa okushisa okuphezulu okungase kufakwe i-reflow soldering, amazinga okushisa aphezulu angadlula no-230°C.
Ukubonakaliswa Okuqondile: Ukushisa okuphezulu okungazelelwe kungabangela ukuthi izingxenye zokuvikela zepulasitiki ze-terminal zincibilike, zigobe, ziqhume, noma ziguquguquke, futhi izingxenye zensimbi nazo zingashintsha izakhiwo ngenxa yokushisa okuphezulu.
Izingozi Eziyinhloko Ezibangelwa Ukushaqeka Okuphezulu Kwezinga Lokushisa
Ukushaqeka kokushisa okuphezulu akuthinti nje kuphela ama-terminal ngokwawo, kodwa futhi kungabangela uchungechunge lwezinkinga zokuthembeka nokuphepha:
Ukwanda Kokumelana Nokuthintana Okuholela Emijikelezweni Yokushisa Okudlulele: Amazinga okushisa aphezulu angabangela ukubola ezindaweni zokuthintana zama-terminals nama-conductor, kwakha izendlalelo ezincane ze-oxide. Lokhu kungandisa kakhulu ukumelana nokuthintana, futhi ukumelana okwandisiwe kudala ukushisa okwengeziwe, kwakha umjikelezo omubi, okuthi ezimweni ezinzima kungabangela ngisho nomlilo.
Amandla Okusebenza Ancishisiwe: Amazinga okushisa aphezulu angathinta izakhi ezinwebeka ngaphakathi kwe-terminal, okubangela ukuthi zilahlekelwe ukunwebeka futhi zinciphise ingcindezi yokuxhumana, okuholela ekuxhumeni okuxekethile. Ngesikhathi esifanayo, ungqimba lokuvikela izintambo lungaguga futhi luqhekeke ngaphansi kwamazinga okushisa aphezulu, okunciphisa ukusebenza kokuvikela.
Umthelela Emandleni Okuthwala Amandla: Uma indawo yokugoqa ingaklanywanga noma icutshungulwanga ngendlela engafanele (isb., isilinganiso sokucindezela esingalungile), indawo yayo enqamulayo ingase inciphe, okuholela ekwandeni kwamandla okuthwala amandla kagesi futhi kwenze kube lula ukukhiqiza ukushisa lapho amandla kagesi egeleza.
Indlela Yokuphendula Nokuxazulula Ukushaqeka Okuphezulu Kwezinga Lokushisa
Lungiselela Ukukhethwa Kwezinto: Khetha izinsimbi ezinokumelana nokushisa okuphezulu (njengethusi elinomoya ophezulu) kanye nezinto ze-resin.
Thuthukisa Inqubo Yokugoba: Lawula ngokuqinile isilinganiso sokugoba (isilinganiso sokugoba esinconyiwe esingu-65%–75%, isilinganiso sokugoba esiqhutshwa ngumqhubi esingu-65%–80%).
Lawula Ngokunembile Inqubo Yokwelapha Ukushisa: Lawula ngokunembile izinga lokushisa nesikhathi endaweni yokushisa kwangaphambili, indawo yamagagasi, kanye nendawo ephakeme ukuze ugweme ukuvezwa okungadingekile kokushisa okuphezulu isikhathi eside. Landela ngokuqinile iwindi lenqubo ukuze uvimbele ukushaqeka okubangelwa ukuphambuka kwenqubo.
Qinisa Ukuphathwa Kwenqubo Yokuhlanganisa: Qinisekisa ukuthi iphinikhodi ye-solder ibekwe kahle futhi inosayizi ofanele; qinisekisa ukuthi ama-terminal ayakwazi ukunamathela; ngemva kokuhlanganisa, hlanza kahle ngaphandle kokungcola kwe-flux. Susa imiphumela emibi yezinto zangaphandle kuma-terminal.
Ubuchwepheshe Bokuxhumana Obuhlukile: Ngemikhiqizo enezidingo zamandla aphezulu kanye nokuphakama kwezinga lokushisa okuqinile, cabanga ngokusebenzisa ukushisela okuvama kakhulu kanye nezinye izindlela zokuxhuma. Ukushisela okuvama kakhulu kuvumela ithusi ukuthi lihlangane ezingeni lama-molecule, okuholela ekumelaneni okuphansi kanye nokulawula okungcono kokuphakama kwezinga lokushisa.