A preface.

Kaore he parahi i te poka he raru mahi na PCB. Na te whanaketanga o te putaiao me te hangarau, ko te tika o te PCB (te waahanga waahanga) e tika ana kia teitei ake kia teitei ake, kaore nei e raru noa ki nga kaihanga PCB (taupatupatu i waenga i te utu me te kounga), engari ka waiho ano he raru huna kounga nui ki nga kaihoko whakararo! Mahia he taatai ​​ngawari i tenei waahanga i raro nei, me te tumanako kia maarama koe me te awhina ki tetahi hoa mahi e tika ana!

2. Te wetewete hoahoa a-Iwi

Simple analysis of PCB hole copper and improvement methods

Classification and characteristics of copper – free holes

1. Kaore he parahi i te poka PTH: he rite, he noa hoki te paparanga hiko o te papa parahi o runga. Ko te paparanga hiko o te pereti i roto i te poka ka tohaina tohatohahia mai i te waahanga ki te pakaru, a ka kapi te pakaru i te waahanga hiko i muri o te tuhi.

Simple analysis of PCB hole copper and improvement methods

2. Plate hiko parahi poka kikokore kahore parahi:

(1) Ko te kohinga parahi katoa te kohao angiangi kaore he parahi – he parakore te parahi o te papa me te paraharaha parahi parahi hiko, i muri i te whakairo hiko whakairoiro o te kohinga moroiti i waenga o te nuinga o te parahi parahi kua pakaru, i muri o te paparanga hiko whakairoiro kua whakauruhia;

(2) kaore he parahi i te kohao angiangi o te pereti parahi i roto i te poka – he rite tonu te paparanga hiko o te pereti parahi me te tikanga, a ko te papa hiko o te pereti i roto i te poka kei te heke mai i te poka ki te pakaru, a ko te whati i te nuinga o te poka, a ko te parahi e waiho ana ka waiho i te whati

Ko te taha matau he homogeneity me te hangarite, a, ko te wehenga o muri-kauwhata ka kapi e te papa kauwhata.

Simple analysis of PCB hole copper and improvement methods

3. Whakapaihia nga poka pakaru:

(1) hanga parahi te koha kino – ko te tepu paraharaha parahi papa apa hiko he rite me te tikanga, ko te kohao paraharaha konganuku parekura kaore he ia oana, he koretake te whatianga, ka puta pea i roto i te waha poka ka puta ano hoki i waenga o te poka. , kei te pakitara o te kohao e kitea ana te pupuhi ngawari me etahi atu kino, hoahoa hiko i muri o te taupoki ka taupokina e te hoahoa hiko hiko.

(2) tiaki waikura o te poka, te tepu paraharaha parahi papa apa hiko he rite, me te noa, te paraharaha parahi paraharaha konganuku hiko kahore he au taping, he pakaru te whatianga, kia puta i roto i te orifice kia puta ano i waenganui o te poka , i te pakitara o te kohao ka puta ake he piu kikino me etahi atu kino, ko te papa whatiwhati hiko hiko hiko kaore i takai i te papa hiko hiko.

Simple analysis of PCB hole copper and improvement methods

4. Kaore he kohao parahi parahi: i muri i te whakairoiro whakairoiro, he maama nga mea e mau ana i te poka, ko te nuinga o te taiepa poka kua horo, ko te paparanga hiko whakairoiro i te whatianga kaore i kapi e te papa hiko hiko.

Simple analysis of PCB hole copper and improvement methods

5. Ko te kohao hiko kaore he parahi: ko te paparanga hiko i te whatianga kaore i te takai ki roto i te pereti hiko hiko – ahua hiko hiko me te papa pereti hiko matotoru he rite, he whati te whati; Ko te paparanga hiko whakairoiro e whakaatu ana i te ia o te taper kia ngaro ra ano, ana ka toro haere tonu te paparanga hiko pereti mo tetahi tawhiti ki tua atu o te paparanga hiko whakairoiro katahi ka momotu.

Simple analysis of PCB hole copper and improvement methods

Simple analysis of PCB hole copper and improvement methods

Iv. Aronga Whakapai Ake:

1. Mahi (poari o runga me raro, tautuhi parawhata, tiaki, whakahaere rereke);

2. Taputapu (warou, kai whangai, pene whakawera, wiri, papu hau, huringa whiri)

3. Rauemi (pereti, potion);

4. Nga Tikanga (nga taatari, nga whakaritenga, nga whakaritenga me te whakahaere kounga);

5. Taiao (he rereketanga na te paru, te koretake, me te rereketanga).

6. Te Ine (whakamatau rongoa wai, tirotirohia te tirohanga parahi).