Mukhoza kuweruza ndondomeko ya PCB pamwamba poyang'ana mtundu

apa pali golidi ndi mkuwa m'mabwalo ozungulira a mafoni a m'manja ndi makompyuta. Choncho, mtengo wobwezeretsanso wa matabwa ogwiritsidwa ntchito ukhoza kufika ku yuan 30 pa kilogalamu. Ndiwokwera mtengo kwambiri kuposa kugulitsa mapepala otayira, mabotolo agalasi, ndi chitsulo chachitsulo.

Kuchokera kunja, mbali yakunja ya bolodi yozungulira imakhala ndi mitundu itatu: golide, siliva, ndi kuwala kofiira. Golide ndiye wokwera mtengo kwambiri, siliva ndi wotsika mtengo, ndipo wofiira wopepuka ndiye wotchipa kwambiri.

Zitha kuwoneka kuchokera kumtundu ngati wopanga ma hardware wadula ngodya. Kuonjezera apo, dera lamkati la bolodi la dera ndilo makamaka mkuwa wangwiro, womwe umapangidwa ndi okosijeni mosavuta ngati utawululidwa ndi mpweya. Mbali yakunja iyenera kukhala ndi chitetezo chomwe chatchulidwa pamwambapa. Anthu ena amanena kuti chikasu chagolide ndi mkuwa, zomwe ndi zolakwika.

 

Golide:

 

Golide wokwera mtengo kwambiri ndi golide weniweni. Ngakhale pali gawo lochepa chabe, limaperekanso pafupifupi 10% ya mtengo wa board board. Malo ena m'mphepete mwa nyanja ya Guangdong ndi Fujian amakhazikika pakugula matabwa oyendera zinyalala ndikusekula golide. Phindu lake ndi lalikulu.

Pali zifukwa ziwiri zomwe golide amagwiritsidwira ntchito, chimodzi ndikuthandizira kuwotcherera, ndipo china ndikuletsa dzimbiri.

Chala chagolide cha module ya kukumbukira zaka 8 zapitazo chikadali chonyezimira, ngati mutachisintha kukhala mkuwa, aluminiyamu, kapena chitsulo, chidzakhala cha dzimbiri komanso chopanda ntchito.

Chosanjikiza chopangidwa ndi golide chimagwiritsidwa ntchito kwambiri pamapadi agawo, zala zagolide, ndi cholumikizira cholumikizira cha board board.
Ngati mupeza kuti matabwa ena onse ndi asiliva, muyenera kukhala odula ngodya. Liwu lamakampani limatchedwa "costdown".

Ma boardboard a mafoni am'manja nthawi zambiri amakhala matabwa okhala ndi golide, pomwe ma boardboard apakompyuta, ma audio ndi ma board ang'onoang'ono a digito nthawi zambiri sakhala matabwa okhala ndi golide.

 

Siliva
Kodi mmodzi wa aureate ndi golidi ndi siliva mmodzi siliva?
Ayi ndithu, ndi malata.

 

Gulu lasiliva limatchedwa bolodi la spray tin. Kupopera chingwe cha malata kunja kwa dera la mkuwa kungathandizenso kutsekemera. Koma sizingapereke kudalirika kwa nthawi yayitali ngati golide.

Pulati ya tini yopopera ilibe mphamvu pazigawo zomwe zagulitsidwa, koma kudalirika sikokwanira kwa mapepala omwe akhala akuwululidwa ndi mpweya kwa nthawi yaitali, monga mapepala apansi ndi mapini a masika. Kugwiritsa ntchito nthawi yayitali kumakhala ndi okosijeni komanso dzimbiri, zomwe zimapangitsa kuti musagwirizane.

Ma board ozungulira azinthu zazing'ono zama digito, popanda kupatula, ndi matabwa a malata opopera. Pali chifukwa chimodzi chokha: zotsika mtengo.

 

Mankhwala ang'onoang'ono a digito amakonda kugwiritsa ntchito mbale ya malata.

 

 

Chofiira chowala:
OSP, organic soldering filimu. Chifukwa ndi organic, osati chitsulo, ndi wotsika mtengo kuposa kupopera malata.

Ntchito yokhayo ya filimuyi organic ndi kuonetsetsa kuti mkati mkuwa zojambulazo sadzakhala oxidized pamaso kuwotcherera. Filimuyi imasanduka nthunzi ikatenthedwa powotcherera. Solder amatha kuwotcherera waya wamkuwa ndi zigawo zake pamodzi.

Koma si kugonjetsedwa ndi dzimbiri. Ngati gulu ladera la OSP likumana ndi mpweya kwa masiku khumi, silingathe kuwotcherera zida.

Mabotolo ambiri apakompyuta amagwiritsa ntchito ukadaulo wa OSP. Chifukwa dera la bolodi lozungulira ndi lalikulu kwambiri, silingagwiritsidwe ntchito popangira golide.