PCB (Icapiro ryumuzunguruko) ifite uruhare runini mubuzima bwubu.Nibishingiro n'umuhanda wibikoresho bya elegitoroniki.Ni muri urwo rwego, ireme rya PCB rirakomeye.
Kugenzura ubuziranenge bwa PCB, hagomba gukorwa ibizamini byinshi byo kwizerwa.Ibika bikurikira ni intangiriro y'ibizamini.
1. Ikizamini cyo kwanduza Ionic
Intego: Kugenzura umubare wa ion hejuru yubuyobozi bwumuzunguruko kugirango umenye niba isuku yinama yumuzunguruko yujuje ibisabwa.
Uburyo: Koresha 75% propanol kugirango usukure icyitegererezo.Ions irashobora gushonga muri propanol, igahindura imikorere yayo.Imihindagurikire yimyandikire yanditswe kugirango hamenyekane ion yibanze.
Ibisanzwe: munsi cyangwa ihwanye na 6.45ug.NaCl / sq.in
2. Ikizamini cyo kurwanya imiti ya mask yagurishijwe
Intego: Kugenzura imiti irwanya masike
Uburyo: Ongeramo qs (kwant yuzuye) dichloromethane itonyanga hejuru yicyitegererezo.
Nyuma yigihe gito, ohanagura dichloromethane hamwe nipamba yera.
Reba kugirango urebe niba ipamba yanduye kandi niba mask yo kugurisha yashonga.
Ibisanzwe: Nta irangi cyangwa gushonga.
3. Ikizamini gikomeye cyo kugurisha mask
Intego: Reba ubukana bwa mask yo kugurisha
Uburyo: Shyira ikibaho hejuru.
Koresha ikaramu isanzwe yikizamini kugirango ushushanye urwego rukomeye mubwato kugeza igihe nta gishushanyo.
Andika ubukana buke bwo mu ikaramu.
Igipimo: Ubukomere ntarengwa bugomba kuba hejuru ya 6H.
4. Kwambura ikizamini imbaraga
Intego: Kugenzura imbaraga zishobora kwambura insinga z'umuringa ku kibaho cyumuzunguruko
Ibikoresho: Ikizamini Cyimbaraga
Uburyo: Kuramo insinga z'umuringa byibuze 10mm uhereye kuruhande rumwe rwa substrate.
Shira icyapa cy'icyitegererezo ku kizamini.
Koresha imbaraga zihagaritse kugirango wambure insinga z'umuringa zisigaye.
Andika imbaraga.
Ibisanzwe: Imbaraga zigomba kurenga 1.1N / mm.
5. Ikizamini cyo kugurisha
Intego: Kugenzura solderability ya padi no kunyura mu mwobo.
Ibikoresho: imashini igurisha, ifuru nigihe.
Uburyo: Guteka ikibaho mu ziko kuri 105 ° C kumasaha 1.
Kwibiza.Shira ikibaho neza mumashini yagurishije kuri 235 ° C, hanyuma uyikuremo nyuma yamasegonda 3, urebe agace ka padi yashizwe mumabati.Shira ikibaho gihagaritse mumashini igurisha kuri 235 ° C, uyikuremo nyuma yamasegonda 3, hanyuma urebe niba umwobo winjiye mumabati.
Igipimo: Ijanisha ryakarere rigomba kuba rirenze 95. Byose binyuze mumyobo bigomba kwibizwa mumabati.
6. Ikizamini cya Hipot
Intego: Kugerageza kwihanganira imbaraga za voltage yubuyobozi bwumuzunguruko.
Ibikoresho: Ikizamini cya Hipot
Uburyo: Isuku kandi yumye.
Huza ikibaho na tester.
Ongera voltage kuri 500V DC (itaziguye) ku gipimo kitarenze 100V / s.
Fata kuri 500V DC kumasegonda 30.
Ibisanzwe: Ntabwo hagomba kubaho amakosa kumuzunguruko.
7. Ikizamini cyubushyuhe bwikirahure
Intego: Kugenzura ubushyuhe bwikirahure bwibisahani.
Ibikoresho: DSC (Differential Scanning Calorimeter) igerageza, ifuru, yumye, umunzani wa elegitoroniki.
Uburyo: Tegura icyitegererezo, uburemere bwacyo bugomba kuba 15-25mg.
Ingero zatekeshejwe mu ziko kuri 105 ° C mu masaha 2, hanyuma zikonjeshwa kugeza ubushyuhe bwicyumba muri desiccator.
Shira icyitegererezo kuri stade yicyitegererezo cya DSC, hanyuma ushireho ubushyuhe kuri 20 ° C / min.
Sikana kabiri hanyuma wandike Tg.
Ibisanzwe: Tg igomba kuba hejuru ya 150 ° C.
8. CTE (coefficient yo kwagura ubushyuhe) ikizamini
Intego: CTE yinama yisuzuma.
Ibikoresho: TMA (isesengura rya thermomechanical) igerageza, ifuru, yumye.
Uburyo: Tegura icyitegererezo gifite ubunini bwa 6.35 * 6.35mm.
Ingero zatekeshejwe mu ziko kuri 105 ° C mu masaha 2, hanyuma zikonjeshwa kugeza ubushyuhe bwicyumba muri desiccator.
Shira icyitegererezo kuri sample yicyitegererezo cya TMA, shyira igipimo cyubushyuhe kuri 10 ° C / min, hanyuma ushireho ubushyuhe bwa nyuma kuri 250 ° C.
Andika CTEs.
9. Ikizamini cyo kurwanya ubushyuhe
Intego: Gusuzuma ubushyuhe bwikibaho.
Ibikoresho: TMA (isesengura rya thermomechanical) igerageza, ifuru, yumye.
Uburyo: Tegura icyitegererezo gifite ubunini bwa 6.35 * 6.35mm.
Ingero zatekeshejwe mu ziko kuri 105 ° C mu masaha 2, hanyuma zikonjeshwa kugeza ubushyuhe bwicyumba muri desiccator.
Shira icyitegererezo kuri sample yicyitegererezo cya TMA, hanyuma ushireho ubushyuhe kuri 10 ° C / min.
Ubushyuhe bw'icyitegererezo bwazamutse bugera kuri 260 ° C.
Inganda za Chengyuan zikora umwuga wo gutwika imashini
Igihe cyo kohereza: Werurwe-27-2023