Kana waya yemhangura yePCB ikadonha, ese maPCB mabhureki anopokana kuti idambudziko relaminate uye inoda kuti zvidyarwa zvavo zvekugadzira zvitakure kurasikirwa kwakashata.Zvinoenderana nemakore mazhinji ekunyunyuta kwevatengi chiitiko chekubata, zvikonzero zvakajairika zvekudonha kwePCB mhangura ndezvizvi:
1,PCB fekitori process zvinhu:
1), Copper foil yakavharwa.
Electrolytic foil yemhangura inoshandiswa pamusika inowanzo galvanized imwe-side (inowanzo zivikanwa seashing foil) uye imwe-sided copper plating (inowanzozivikanwa sered foil).Kurambwa kwemhangura kwakajairika kunowanzo kuve kwakabatiswa foiri yemhangura pamusoro pe70UM.Pakave pasina batch mhangura yekurambwa kune tsvuku foil uye ashing foil pazasi 18um.Kana dhizaini yedunhu iri nani pane mutsara we etching, kana iyo yemhangura foil yakatarwa ichichinja uye etching parameters inoramba isingachinji, nguva yekugara yemhangura foil mune etching mhinduro ichave yakareba.
Nekuti zinc isimbi inoshanda, kana waya yemhangura iri paPCB yakanyudzwa mumhinduro ye etching kwenguva yakareba, inotungamira kune yakawandisa mutsara wecorrosion, zvichikonzera kuita kwakazara kweimwe mutsara mutete unotsigira zinc layer uye kupatsanurwa kubva substrate, ndiko kuti, waya yemhangura inodonha.
Chimwe chiitiko ndechekuti hapana dambudziko nePCB etching parameters, asi kugezwa kwemvura nekuomeswa mushure mekucheka kwakashata, zvichikonzera kuti waya yemhangura yakakomberedzwawo neyakasara etching mhinduro paPCB chimbuzi chepamusoro.Kana iyo isina kurapwa kwenguva yakareba, inoberekawo yakawandisa side corrosion yetambo yemhangura uye kukanda mhangura.
Mamiriro ezvinhu aya anowanzo kutariswa munzira yakatetepa kana kunyorova kwekunze.Zvakafanana zvichaonekwa paPCB yese.Bvuura waya yemhangura kuti uone kuti ruvara rwenzvimbo yayakasangana nayo nehwaro hwehwaro (kureva iyo inonzi nzvimbo yakakora) yachinja, inosiyana neruvara rwefoil yemhangura.Zvaunoona iruvara rwemhangura rwepazasi, uye kusimba kweganda refoiri yemhangura pamutsetse wakakora zvakare.
2), Kudhumhana kwenzvimbo kunoitika muPCB kugadzirwa kwemaitiro, uye waya yemhangura inoparadzaniswa kubva kune substrate nekunze kwemagetsi simba.
Pane dambudziko nekumisikidzwa kwekuita kwakashata uku, uye waya yemhangura yakadonha ichange iine kukanganisa kuri pachena, kana makwara kana mamaki ekukanganisa munzira imwe chete.Bvuura waya yemhangura pachikamu chakashata uye tarisa pafoiri yemhangura yakaoma.Zvinogona kuonekwa kuti ruvara rwemhangura foil rough surface yakajairika, hapazovi nemararamiro emativi, uye simba rekubvisa remhangura remhangura rinowanzoitika.
3), PCB yedunhu dhizaini haina musoro.
Kugadzira mitsetse yakatetepa yakawandisa ine gobvu foil yemhangura inokonzeresa kuwandisa kwemitsara uye kurambwa kwemhangura.
2,Laminate process chikonzero:
Mumamiriro ezvinhu akajairwa, sekureba iyo inopisa yekutsikirira-yepamusoro tembiricha yelaminate ichipfuura maminetsi makumi matatu, iyo foil yemhangura uye semi yakaporeswa shiti zvakabatanidzwa zvachose, saka kudzvanya kazhinji hakuzokanganisa simba rekubatanidza pakati pefoiri yemhangura uye substrate mune laminate.Nekudaro, mukuita kwekumisikidza nekuturikidzana, kana PP yakasvibiswa kana iyo yakaoma pamusoro pefoil yemhangura yakakuvadzwa, zvinozotungamira kune kusakwana kwekubatana kwesimba pakati pemhangura foil uye substrate mushure melamination, zvichikonzera kutsauka kwekumisikidza (chete kune mahwendefa makuru) kana kuti sporadic waya yemhangura inodonha, asi hapazove nekukanganisika mukusimba kweganda refoiri remhangura pedyo nekusashanda.
3, Laminate mbishi zvinhu chikonzero:
1), Sezvambotaurwa pamusoro, akajairwa electrolytic copper foil inonamirwa kana mhangura yakapfatwa zvigadzirwa zvemvere dzemakwai.Kana iyo yepamusoro kukosha kwemvere dzemakushe isina kurongeka panguva yekugadzirwa, kana matavi ekuputira ekristaro asina kusimba panguva yekugadzira galvanizing / copper plating, zvichikonzera kusakwana kweganda kusimba kwefoiri yemhangura pachayo.Mushure mekunge foil yakashata yakatsikirirwa muPCB, waya yemhangura inodonha pasi pesimba rekunze kwesimba muplug-in yefekitori yemagetsi.Rudzi urwu rwekukanda mhangura haruna kunaka.Kana waya yemhangura yabviswa, hapazove nekuora kuri pachena kweparutivi panzvimbo yakakasharara yefoiri yemhangura (kureva nzvimbo yekusangana ine substrate), asi kusimba kweganda refoiri yese yemhangura kunenge kwakashata.
2),Kusagona kuchinjika pakati pefoiri yemhangura neresin: kune mamwe machira ane zvinhu zvakakosha, senge HTG sheet, nekuda kweakasiyana masisitimu eresin, mumiririri wekurapa anoshandiswa anowanzo PN resin.Iyo molecular cheni chimiro che resin iri nyore uye muchinjiko wekubatanidza dhigirii wakadzikira panguva yekurapa.Inosungirwa kushandisa foil yemhangura ine peak yakakosha kuti ienderane nayo.Kana foil yemhangura inoshandiswa mukugadzira laminate isingaenderane neresin system, zvichikonzera kusakwana kwesvuura simba resimbi foil yakavharwa pandiro, uye waya yakaipa yemhangura inodonha kana ichiisa.
Nguva yekutumira: Aug-17-2021