Takulandilani kumasamba athu!
Chidziwitso chozizira
Kodi mtundu wa bolodi la PCB ndi chiyani, monga momwe dzinalo likusonyezera, potenga bolodi la PCB, mwachilengedwe kwambiri kuti muwone mtundu wa mafuta pa bolodi, ndiye kuti, timatchula mtundu wa bolodi la PCB, mitundu wamba. ndi zobiriwira, zabuluu, zofiira ndi zakuda ndi zina zotero.Otsatira a Xiaobian amagawana kumvetsetsa kwawo kwamitundu yosiyanasiyana.
- 1, inki yobiriwira ndiyomwe imagwiritsidwa ntchito kwambiri, chochitika chachitali kwambiri chambiri, ndipo pamsika wapano ndi wotsika mtengo kwambiri, kotero zobiriwira zimagwiritsidwa ntchito ndi ambiri opanga ngati mtundu waukulu wazinthu zawo.
- 2, nthawi zonse, zonse PCB bolodi mankhwala mu ndondomeko kupanga ndi kudutsa bolodi ndi SMT ndondomeko, mu bolodi, pali njira zambiri ayenera kudutsa chikasu kuwala chipinda, chifukwa zotsatira za wobiriwira mu chikasu. chipinda chowala bwino kuposa mitundu ina, koma ichi si chifukwa chachikulu.Pamene zigawo zowotcherera za SMT, PCB kuti idutse pa solder phala ndi kumata ndi ndondomeko yomaliza ya nyali ya AOI, njirazi ndi kuphunzira kuwongolera kawonedwe ka mawonekedwe, mtundu wobiriwira wakumbuyo pa chizindikiritso cha chida ndi bwino.
- Mitundu ya 3.Common PCB ndi yofiira, yachikasu, yobiriwira, yabuluu ndi yakuda.Komabe, chifukwa cha ndondomeko yopanga ndi mavuto ena, ndondomeko yoyendera khalidwe la mizere yambiri iyenera kudalira ogwira ntchito kuti awone ndikuzindikiritsa ndi maso (zowona, zambiri zomwe zimagwiritsidwa ntchito panopa ndi luso la kuyesa singano).Pankhani ya kuwala kwamphamvu, maso amangoyang'ana pa bolodi, yomwe ndi ntchito yakale kwambiri ya Liu, kunena kuti, zobiriwira ndizosavulaza m'maso, kotero opanga ambiri pamsika akugwiritsa ntchito PCB yobiriwira.
- 4, mfundo ya buluu ndi yakuda ndi yakuti amasakanizidwa ndi cobalt ndi zinthu za nyali za carbon, zomwe zimakhala ndi magetsi, pamene mphamvu zimakhala zovuta zachidule, ndipo PCB yobiriwira imakhala yogwirizana ndi chilengedwe. kutentha kwambiri, nthawi zambiri sikutulutsa mpweya wapoizoni.
- Ndipo palinso ochepa opanga pamsika adzagwiritsa ntchito bolodi lakuda la PCB, zifukwa zazikulu zomwe Xiaobian amakhulupirira kuti pali zifukwa ziwiri: choyamba, chikuwoneka chapamwamba, ndipo bolodi lakuda silophweka kuwona waya. , zomwe zimabweretsa vuto linalake pa bolodi yokopera.Zomwe Xiaobian adaphunzira ndikuti ma board ambiri ophatikizidwa a Android tsopano ndi PCBS yakuda.
- 5, kuyambira pakati ndi kumapeto kwa zaka zapitazi, makampani ayamba kulabadira mtundu wa bolodi la PCB, makamaka chifukwa mitundu yambiri yamapulogalamu apamwamba a opanga mzere woyamba atengera mawonekedwe amtundu wa PCB board. anthu pang'onopang'ono amaganiza kuti PCB mtundu ndi wobiriwira ayenera kukhala mkulu-mapeto.
Lembani uthenga wanu apa ndikutumiza kwa ife
