Zoyenera masanjidwe a PCB zigawo za SMD processing ndiye chofunikira kwambiri popanga zithunzi za PCB zapamwamba kwambiri. Zofunikira pamapangidwe azinthu zimaphatikizanso kukhazikitsa, mphamvu, kutentha, chizindikiro, ndi zokongoletsa.

1. unsembe
Amatanthawuza mndandanda wazinthu zofunikira kuti mukhazikitse bwino bolodi la dera mu chassis, chipolopolo, kagawo, ndi zina zotero, popanda kusokoneza danga, dera lalifupi ndi ngozi zina, ndikupanga cholumikizira chosankhidwa pamalo osankhidwa pa chassis kapena chipolopolo. pazochitika zapadera zogwiritsira ntchito. Amafuna.

2. mphamvu

Gulu loyang’anira dera pakukonza kwa SMD liyenera kupirira mphamvu zosiyanasiyana zakunja ndi kugwedezeka pakuyika ndi ntchito. Pachifukwa ichi, bolodi la dera liyenera kukhala ndi mawonekedwe oyenerera, ndipo malo a mabowo osiyanasiyana (mabowo opangira, maenje apadera) pa bolodi ayenera kukonzedwa moyenera. Nthawi zambiri, mtunda pakati pa dzenje ndi m’mphepete mwa bolodi uyenera kukhala waukulu kuposa m’mimba mwake wa dzenje. Panthawi imodzimodziyo, ziyenera kuzindikiridwa kuti gawo lofooka kwambiri la mbale lomwe limayambitsidwa ndi dzenje lapadera liyenera kukhala ndi mphamvu zokwanira zopindika. Zolumikizira zomwe “zimatambasula” mwachindunji kuchokera ku chipolopolo cha chipangizo pa bolodi ziyenera kukhazikitsidwa momveka bwino kuti zitsimikizire kudalirika kwa nthawi yaitali.

3. Kutentha

Pazida zamphamvu kwambiri zokhala ndi kutentha kwakukulu, kuphatikiza pakuwonetsetsa kuti kutentha kumatenthedwa, ziyenera kuyikidwanso pamalo oyenera. Makamaka m’makina apamwamba a analogi, chidwi chapadera chiyenera kuperekedwa ku zotsatira zoyipa za gawo la kutentha lopangidwa ndi zipangizozi pa dera losalimba la preamplifier. Nthawi zambiri, gawo lomwe lili ndi mphamvu yayikulu kwambiri liyenera kupangidwa kukhala gawo padera, ndipo njira zina zodzipatula zodzipatula ziyenera kuchitidwa pakati pake ndi gawo lopangira ma siginecha.

4. Chizindikiro

Kusokoneza ma sign ndiye chinthu chofunikira kwambiri chomwe chiyenera kuganiziridwa pamapangidwe a PCB. Zomwe zimafunikira kwambiri ndi izi: mawonekedwe ofooka a chizindikiro amasiyanitsidwa kapena kulekanitsidwa ndi mawonekedwe amphamvu; gawo la AC limasiyanitsidwa ndi gawo la DC; gawo lapamwamba kwambiri limasiyanitsidwa ndi gawo lotsika kwambiri; tcherani khutu ku njira ya mzere wa chizindikiro; kupanga kwa mzere wapansi; kutetezedwa koyenera ndi kusefa Ndi njira zina.

5. Wokongola

Sikoyenera kungoganizira za kuyika bwino komanso mwadongosolo kwa zigawo, komanso mawaya okongola komanso osalala. Chifukwa anthu wamba wamba nthawi zina amagogomezera zakale kwambiri kuti athe kuwunika mbali imodzi zabwino ndi zoyipa za kapangidwe ka dera, kwa chithunzi cha mankhwalawo, choyambiriracho chiyenera kuperekedwa patsogolo pamene zofunikira za magwiridwe antchito sizili zankhanza. Komabe, pazochitika zapamwamba, ngati mukuyenera kugwiritsa ntchito bolodi lokhala ndi mbali ziwiri, ndipo bolodi la dera limayikidwanso mmenemo, nthawi zambiri zimakhala zosaoneka, ndipo kukongola kwa wiring kuyenera kukhala koyambirira.