Pfupiso yedambudziko re delamination uye kuputika kweganda remhangura rePCB

Q1

Handisati ndambosangana nemablistering. Chinangwa che browning ndechekusunga zvirinani iyo simbi mhangura nepp?

Hongu, zvakajairika PCB yakasvibiswa isati yadzvanya kuti iwedzere kushata kwefoiri yemhangura kudzivirira delamination mushure mekudzvanya nePP.

ipcb

Q2

Pachave nekuputika pamusoro peyakafumurwa yemhangura electroplating goridhe plating? Ko kunamatira kweImmersion Gold kwakadii?

Kunyudza goridhe rinoshandiswa munzvimbo yakafumurwa yendarira pamusoro. Nekuti goridhe rinonyanya kufamba, kuitira kudzivirira kupararira kwegoridhe mumhangura uye kutadza kuchengetedza nzvimbo yemhangura, inowanzoputirwa nedhizaini nickel pamusoro pemhangura, uye wozozviita pamusoro pevhu. nickel. Chigadziko chegoridhe, kana iyo goridhe layer yanyanya kutetepa, ichaita kuti nickel layer iite oxidize, zvichikonzera dema disk effect panguva ye soldering, uye majoini ekutengesa anotsemuka nekudonha. Kana hukobvu hwegoridhe hwasvika 2u” uye pamusoro, rudzi urwu rwemamiriro ezvinhu akaipa haazoitike.

Q3

Ndinoda kuziva kuti kudhinda kunoitwa sei mushure mekunyura 0.5mm?

Shamwari yekare inoreva kudhinda solder paste, uye nhanho nzvimbo inogona kutengeswa nemuchina werata kana ganda retani.

Q4

Ko pcb inonyura munharaunda, iyo nhamba yezvikamu munzvimbo inonyura inosiyana here? Mutengo uchawedzera zvakadii?

Nzvimbo yekunyura inowanzowanikwa nekudzora kudzika kwegong muchina. Kazhinji, kana kudzika chete kuchidzorwa uye dhizaini isina kurongeka, mutengo wakafanana. Kana iyo layer ichizove yakarurama, inoda kuvhurwa nematanho. Iyo nzira yekuigadzira, ndiko kuti, iyo graphic dhizaini inogadzirwa pane yemukati layer, uye chivharo chinogadzirwa nelaser kana milling cutter mushure mekudzvanya. Mutengo wakwira. Nezve kuti mutengo wakakwira zvakadii, tinokugamuchirai kubvunza vaunoshanda navo mudhipatimendi rekushambadzira reYibo Technology. Vachakupa mhinduro inogutsa.

Q5

Kana tembiricha yemuchina yekutsikisa inosvika pamusoro peTG yayo, mushure menguva yakati, inoshanduka zvishoma nezvishoma kubva kune yakasimba kusvika kune girazi mamiriro, ndiko kuti, (resin) inova chimiro cheglue. Izvi hazvina kunaka. Muchokwadi, pamusoro peTg inzvimbo yakakwira elastic, uye pazasi Tg inzvimbo yegirazi. Kureva kuti, pepa racho rine girazi pane tembiricha yekamuri, uye inoshandurwa kuita yakanyanyisa elastic mamiriro pamusoro peTg, iyo inogona kuremara.

Panogona kunge paine kusanzwisisana apa. Kuti zvive nyore kuti munhu wese anzwisise paanenge achinyora nyaya yacho, ndakaitumidza gelatinous. Muchokwadi, iyo inonzi PCB TG kukosha inoreva iyo yakakosha tembiricha poindi iyo substrate inonyungudika kubva kune yakasimba nyika kusvika kune rubbery fluid, uye Tg point ndiyo inonyungudika.

Iyo tembiricha yegirazi yekuchinja ndeimwe yehunhu hwakatarwa tembiricha yeakakwira molecular polymers. Kutora tembiricha yegirazi semuganho, mapolymer anoratidza akasiyana emuviri zvimiro: pazasi pegirazi tembiricha, iyo polymer zvinhu zviri muchimiro chemamorekuru epurasitiki epurasitiki, uye pamusoro peiyo tembiricha yegirazi, iyo polymer zvinhu zviri murubber state…

Kubva pamaonero einjiniya mashandisirwo, tembiricha yegirazi ndiyo yakanyanya tembiricha yeinjiniya mamolecular compound mapurasitiki, uye muganho wakaderera wekushandiswa kwerabha kana elastomers.

Iyo yakakwira iyo TG kukosha, zviri nani kupikisa kupisa kwebhodhi uye zvirinani kuramba deformation yebhodhi.

Q6

Hurongwa hwakagadziridzwa sei?

Iyo itsva scheme inogona kushandisa yese yemukati layer kugadzira magirafu. Apo bhodhi rinoumbwa, mukati memukati unoputika kunze nekuzarura chivharo. Iyo yakafanana nebhodhi rakapfava uye rakaoma. Iyo nzira yakanyanya kuoma, asi iyo yemukati yemukati yemhangura foil Kubva pakutanga, iyo core board inomanikidzwa pamwe chete, kusiyana nenyaya iyo iyo yakadzika inodzorwa uye ipapo electroplated, iyo yekubatanidza simba haina kunaka.

Q7

Ko fekitari yebhodhi haindiyeuchidze here pandinoona zvinodiwa zvemhangura? Kuiswa kwegoridhe kuri nyore kutaura, kubikwa kwemhangura kunofanirwa kubvunzwa

Hazvirevi kuti zvese zvinodzorwa zvakadzika copper plating zvichaputika. Iri idambudziko rinogona kuitika. Kana nzvimbo yemhangura yemhangura pane substrate iri shoma, hapazovi nekuputika. Semuenzaniso, hapana dambudziko rakadaro pamusoro pemhangura yePOVV. Kana nzvimbo yemhangura yemhangura yakakura, kune ngozi yakadaro.