A preface.

Palibe mkuwa mu dzenje ndi vuto logwira ntchito PCB. Ndikukula kwa sayansi ndiukadaulo, kulondola kwa PCB (kuchuluka kwake) kumafunika kukhala kokulirapo, komwe kumangobweretsa mavuto kwa opanga PCB (kutsutsana pakati pa mtengo ndi mtundu), komanso kumasiya vuto lalikulu lobisika kwa makasitomala otsikira! Yesani kusanthula kosavuta pakadali pano, ndikuyembekeza kukhala ndi chidziwitso ndikuthandizira anzanu!

2. Kuwunika kwa chithunzi cha Fishbone

Simple analysis of PCB hole copper and improvement methods

Classification and characteristics of copper – free holes

1. Palibe mkuwa mu dzenje la PTH: wosanjikiza wamagetsi wa mbale yamkuwa pamwambapa ndi yunifolomu komanso yachibadwa. Chingwe chamagetsi cham’dzenje chimagawidwa mofananira kuchokera pachimake mpaka pakuthyoka, ndipo chophimbacho chimaphimbidwa ndi gawo lamagetsi atatha kujambula.

Simple analysis of PCB hole copper and improvement methods

2. Mbale yamagetsi yamagetsi yamagetsi yopanda kopanda mkuwa:

(1) Mbale yonse yamkuwa yopyapyala yopanda mkuwa – pamwamba mkuwa ndi dzenje lamkuwa lapanja limakhala lochepa kwambiri, pambuyo poti magetsi ayambe kutulutsa pakatikati pa mbale yayikulu yamkuwa, itatha magetsi watsekedwa;

(2) mulibe mkuwa mu dzenje laling’ono la mbale yamkuwa mdzenjemo – gawo lamagetsi lamkuwa ndilofanana ndi labwinobwino, ndipo chingwe chamagetsi champhako mu dzenje chikuchepa kuchokera kubowo mpaka kuphulika, ndipo chovulala chimakhala pakati pa dzenje, ndipo chosanjikiza chamkuwa chimatsalira pakuphulika

Mbali yakumanja ili ndi homogeneity wabwino komanso yosakanikirana, ndipo chithunzi chazithunzi chazithunzi chimadzaza ndi graph.

Simple analysis of PCB hole copper and improvement methods

3. Konzani mabowo owonongeka:

(1) kukonza mkuwa dzenje loyipa – tebulo lamkuwa mbale yamagetsi ndiyofanana ndi yachibadwa, dzenje lamkuwa lamkuwa silinayende bwino, kuphulika kumakhala kosazolowereka, kumatha kuoneka pakamwa pakabowo kumawonekeranso pakati pa dzenje , Pakhoma pakhoma nthawi zambiri pamakhala phokoso lokhazikika komanso zina zoyipa, chithunzi chamagetsi pambuyo poti chophimbacho chaphimbidwa ndi chithunzi cha magetsi.

(2) dzimbiri kukonza dzenje, tebulo mbale yamkuwa wosanjikiza wamagetsi ndi yunifolomu komanso yabwinobwino, dzenje lamkuwa lanyumba yamagetsi ilibe chojambula, chophwanyidwa ndichosazolowereka, chitha kuwonekera pa orifice imawonekeranso pakati pa dzenje , Pakhoma pakhoma nthawi zambiri amawoneka osalongosoka komanso ena oyipa, mawonekedwe osweka amagetsi sanakulunge mbale yamagetsi.

Simple analysis of PCB hole copper and improvement methods

4. Palibe dzenje lazitsulo lamkuwa: mutatha kujambula zithunzi, pali zinthu zoonekeratu zomwe zimalumikizidwa mu dzenjelo, khoma ladzenje limakokoloka, mawonekedwe amagetsi amtundu wosweka saphimbidwa ndi mbale yamagetsi yamagetsi.

Simple analysis of PCB hole copper and improvement methods

5. Chithunzi dzenje lamagetsi lopanda mkuwa: chosanjikiza chamagetsi sichimakulungidwa mu mbale yamagetsi yamagetsi – chithunzi chosanjikiza zamagetsi ndi mbale yamagetsi yosanjikiza ndi yunifolomu, kuphwanyidwa kwasweka; Makina osanjikiza amagetsi amawonetsa kusintha mpaka mpaka kutha, ndipo gawo lamagetsi lamagetsi limapitilizabe kupitilira mtunda wopitilira mawonekedwe amagetsi kenako limadula.

Simple analysis of PCB hole copper and improvement methods

Simple analysis of PCB hole copper and improvement methods

Iv. Kupititsa patsogolo malangizo:

1.Kugwiritsa ntchito (matabwa apamwamba ndi apansi, kukhazikitsa kwa parameter, kukonza, kusamalira bwino);

2. Zida (crane, feeder, pen yotentha, kugwedera, pampu ya mpweya, kusefera);

3. Zipangizo (mbale, potion);

4. Njira (magawo, njira, njira ndi kuwongolera mawonekedwe);

5. Chilengedwe (kusiyanasiyana komwe kumayambitsidwa ndi zonyansa, zosokoneza komanso zina zambiri).

6. Kuyeza (kuyesa kwamankhwala amadzi, kuwunika kwamkuwa).