Yintoni umphumo we-solder ukumelana nombala kwi-PCB?

Ibhodi ye-PCB ayisiyiyo inemibala emininzi, iluncedo ngakumbi.

Ngokwenyani, umbala womgangatho webhodi yePCB ngumbala wemaski yesolder.Okokuqala, ukuxhathisa i-solder kunokuthintela ukubethelwa okungalunganga kwamacandelo.Okwesibini, inokulibazisa ubomi benkonzo yezixhobo, ukwenzela ukukhusela i-oxidation kunye nokubola kwesekethe.

Ukuba uyazi ngakumbi ngebhodi yePCB yeHUAWEI, Ericsson kunye nezinye iinkampani ezinkulu, uya kufumanisa ukuba umbala uluhlaza ngokubanzi.Ngenxa yokuba iteknoloji yombala oluhlaza yebhodi yePCB yeyona ivuthiweyo kwaye ilula.

Ngaphandle eluhlaza, kukho imibala emininzi PCB, ezifana: ezimhlophe, tyheli, obomvu, blue, sub ukukhanya umbala, kwaye nkqu chrysanthemum, purple, emnyama, eluhlaza eqaqambileyo, njl. Imhlophe i-pigment eyimfuneko yokuvelisa izibane kunye izibane.Ukusetyenziswa kweminye imibala ubukhulu becala kunjongo yokuleyibhelishwa kweemveliso.I-PCB yenza iimveliso zenkampani ukusuka kwi-R&D ukuya ekuvuthweni kwenqanaba lonke, ngokweendlela ezahlukeneyo zokusetyenziswa kwebhodi yePCB, ibhodi yovavanyo inokusebenzisa ezimfusa, ibhodi yesitshixo iya kusebenzisa ebomvu, ibhodi yangaphakathi yekhompyuter iya kusebenzisa umnyama, zonke ezo yahlula kwaye uphawule ngombala.

Eyona PCB ixhaphakileyo ibhodi eluhlaza, eyaziwa ngokuba oyile eluhlaza, kwaye solder yayo ukumelana inki inembali ende, ngexabiso eliphantsi kwaye ethandwa kakhulu.Ioyile eluhlaza ineengenelo ezininzi ngaphandle kwetekhnoloji evuthiweyo:

Kwinkqubo yePCB, ukuveliswa kweemveliso zombane kubandakanya ukwenza ipleyiti kunye nelamination.Ngeli xesha, kukho iinkqubo ezininzi zokudlula kwigumbi lokukhanya elityheli, kwaye ibhodi yePCB eluhlaza ineyona mpembelelo ibonakalayo kwigumbi lokukhanya elityheli.Okwesibini, kwibhodi ye-PCB ye-SMT, amanyathelo e-tinning, i-lamination kunye nokuqinisekiswa kwe-AOI zonke zifuna ukubekwa kwamehlo kunye nokulinganisa, kwaye i-PCB eluhlaza ingcono ekuchongeni isixhobo.

Inxalenye yenkqubo yokuhlola ixhomekeke ekuqwalaselweni kwabasebenzi (ngoku abaninzi babo basebenzisa uvavanyo lwenaliti yokubhabha endaweni yomsebenzi wezandla).Bahlala bejonge ebhodini phantsi kokukhanya okunamandla, kwaye umonakalo oluhlaza emehlweni uphantsi.Ibhodi ye-PCB eluhlaza ihambelana nokusingqongileyo, kwaye emva kokuhlaziywa kobushushu obuphezulu, ayiyi kukhupha iigesi ezinetyhefu.

Eminye imibala ye-PCB, efana neblue and black ifakwe i-cobalt kunye nekhabhoni ngokulandelelanayo.Ngenxa yokuba i-conductive ibuthathaka, kukho umngcipheko wesiphaluka esifutshane.

Okufana nebhodi emnyama, kusenokwenzeka ukuba kubangele umahluko umbala ngenxa yenkqubo kunye neengxaki izinto ekrwada kwimveliso, nto leyo ekhokelela izinga eliphezulu PCB isiphene.Ukuthuthwa kwebhodi yesekethe emnyama akulula ukuchonga, okuya kwandisa ubunzima bokugcinwa nokulungiswa kamva.Ngoko ke, abaninziAbavelisi bendibano yePCBakazange asebenzise ibhodi yePCB emnyama.Nakwinkalo yoshishino lomkhosi kunye nolawulo lwemizi-mveliso, iimveliso ezineemfuno ezikumgangatho ophezulu nazo zisebenzisa ibhodi yePCB eluhlaza.

Yintoni isiphumo solder ukumelana inki umbala kwibhodi PCB?

Kwiimveliso ezigqityiweyo, impembelelo yeenki ezahlukeneyo ebhodini ibonakala ngokukodwa kwimbonakalo.Ngokomzekelo, uhlaza lubandakanya ukukhanya kwelanga, ukukhanya okuluhlaza, okuluhlaza okumnyama, okuluhlaza okuluhlaza njalo njalo.Ukuba umbala ulula kakhulu, Emva kwenkqubo yomngxuma weplagi, ukubonakala kwebhodi kuya kubonakala.Abanye abavelisi bane-inki engalunganga, iingxaki ze-resin kunye nedayi, kwaye kuya kubakho amaqamza kunye nezinye iingxaki Khangela utshintsho oluncinci lombala.Kwiimveliso ezigqityiweyo, impembelelo ibonakaliswa ikakhulu kwiqondo lobunzima kwimveliso.Le mibuzo inzima ukuyicacisa.Iinki zombala ezahlukeneyo zineenkqubo zombala ezahlukeneyo, kubandakanya ukutshiza kwe-electrostatic, ukutshiza kunye noshicilelo lwesikrini, kwaye umlinganiselo we-inki ukwahluka.Ukuba kukho impazamo encinci, umbala uya kuhamba kakubi.

Nangona umbala we-inki awunampembelelo kwibhodi ye-PCB, ubukhulu be-inki bunempembelelo enkulu kwi-impedance.Ngokukodwa kwibhodi yegolide yamanzi, ilawula ubukhulu be-inki ngokungqongqo.I-inki ebomvu, ubukhulu kunye namaqamza kulula ukulawula, kunye ne-inki ebomvu inokugubungela iziphene ezithile kwisekethe, eyona nto ingcono kakhulu ngenkangeleko, kodwa into engalunganga kukuba ixabiso libiza kakhulu.Xa umfanekiso, ukubonakaliswa okubomvu kunye nophuzi kuzinzile ngakumbi, kwaye umhlophe ngowona ubi kakhulu ukulawula.

Isishwankathelo, umbala awunayo impembelelo ekusebenzeni kwebhodi egqityiweyo, kwaye unempembelelo encinciSMT PCBibhodi kunye namanye amakhonkco.Kuyilo PCB, ukulawula ngokungqongqo zonke iinkcukacha kwikhonkco ngalinye isitshixo ibhodi PCB elungileyo.Imibala eyahlukeneyo yebhodi ye-PCB, ikakhulu kwimbonakalo engcono yemveliso, asicebisi umbala njengento ebalulekileyo ekuqhubeni iPCB.