PCB (Printed Circuit Board) e na le karolo ea bohlokoa bophelong ba kajeno.Ke motheo le tsela e kholo ea likarolo tsa elektronike.Tabeng ena, boleng ba PCB bo bohlokoa.
Ho hlahloba boleng ba PCB, liteko tse 'maloa tsa ho tšepahala li tlameha ho etsoa.Lirapa tse latelang ke selelekela sa liteko.
1. Teko ea tšilafalo ea Ionic
Morero: Ho hlahloba palo ea li-ion holim'a boto ea potoloho ho fumana hore na bohloeki ba boto ea potoloho bo tšoaneleha.
Mokhoa: Sebelisa 75% propanol ho hloekisa sebaka sa sampuli.Li-ion li ka qhibiliha ka propanol, li fetola conductivity ea eona.Liphetoho tsa conductivity li tlalehiloe ho fumana hore na mahloriso a ion ke afe.
Tekanyetso: e ka tlase ho kapa e lekanang le 6.45ug.NaCl/sq.in
2. Teko ea ho hanyetsa lik'hemik'hale ea mask a solder
Morero: Ho hlahloba khanyetso ea lik'hemik'hale ea mask a solder
Mokhoa: Eketsa qs (quantum khotsofetse) dichloromethane dropwise holim'a sampole.
Ka mor'a nakoana, hlakola dichloromethane ka k'hothone e tšoeu.
Sheba ho bona hore na k'hothone e silafetse le hore na mask a solder a qhibilihile.
Standard: Ha ho dae kapa ho qhibiliha.
3. Teko ea boima ba mask a solder
Morero: Sheba ho thatafala ha mask a solder
Mokhoa: Beha boto sebakeng se bataletseng.
Sebelisa pene e tloaelehileng ea teko ho ngolla boima ba 'mele ka har'a sekepe ho fihlela ho se na mengoapo.
Ngola boima bo tlaase ka ho fetisisa ba pentšele.
Maemo: Boima bo fokolang bo lokela ho ba bo phahameng ho feta 6H.
4. Teko ea ho hlobola matla
Morero: Ho hlahloba matla a ka hlobolang likhoele tsa koporo boto ea potoloho
Thepa: Peel Matla Tester
Mokhoa: Hlobola terata ea koporo bonyane 10mm ho tloha lehlakoreng le leng la substrate.
Beha poleiti ea mohlala holim'a tester.
Sebelisa matla a emeng ho hlobola terata ea koporo e setseng.
Rekota matla.
Standard: Matla a lokela ho feta 1.1N / mm.
5. Teko ea solderability
Morero: Ho lekola ho solderability ea li-pads le likoti tse holim'a boto.
Lisebelisoa: mochini oa solder, ontong le timer.
Mokhoa: Bake boto ka ontong ka 105 ° C bakeng sa hora e le 'ngoe.
Phapang ea metsi.Beha boto ka thata ka har'a mochini oa solder ka 235 ° C, 'me ue ntše ka mor'a metsotsoana ea 3, u lekola sebaka sa lesela le kentsoeng ka thini.Beha boto ka har'a mochini oa solder ka 235 ° C, o e ntše ka mor'a metsotsoana e 3, 'me u hlahlobe hore na lesoba le phunyeletsang le kentsoe ka thini.
Tekanyetso: Peresente ea sebaka e lokela ho ba kholo ho feta 95. Ho pholletsa le masoba ho lokela ho qoelisoa ka thini.
6. Teko ea Hipot
Morero: Ho lekola matla a motlakase a boto ea potoloho.
Thepa: Hipot tester
Mokhoa: Hlatsoa le ho omisa lisampole.
Hokela boto ho tester.
Eketsa motlakase ho 500V DC (ho toba hona joale) ka sekhahla se seng holimo ho 100V / s.
E tšoare ka 500V DC ka metsotsoana e 30.
Standard: Ha hoa lokela ho ba le liphoso ho potoloho.
7. Teko ea mocheso oa phetoho ea khalase
Morero: Ho hlahloba mocheso oa phetoho ea khalase ea poleiti.
Lisebelisoa: DSC (Differential Scanning Calorimeter) tester, ontong, dryer, sekala sa elektroniki.
Mokhoa: Lokisetsa sampuli, boima ba eona e lokela ho ba 15-25mg.
Mehlala e ne e behoa ka ontong ka 105 ° C bakeng sa lihora tse 2, ebe e pholile mocheso oa kamore ka desiccator.
Beha sampole sethaleng sa sampole sa DSC tester, 'me u behe sekhahla sa mocheso ho 20 °C/min.
Sheba habeli 'me u rekote Tg.
Tekanyetso: Tg e lokela ho ba ka holimo ho 150°C.
8. Teko ea CTE (coefficient of thermal extension).
Sepheo: CTE ea boto ea tlhahlobo.
Lisebelisoa: TMA (tlhahlobo ea thermomechanical) tester, ontong, dryer.
Mokhoa: Lokisetsa mohlala ka boholo ba 6.35 * 6.35mm.
Mehlala e ne e behoa ka ontong ka 105 ° C bakeng sa lihora tse 2, ebe e pholile mocheso oa kamore ka desiccator.
Beha mohlala sethaleng sa teko ea TMA, beha sekhahla sa mocheso ho 10 ° C / min, 'me u behe mocheso oa ho qetela ho 250 ° C.
Rekota CTEs.
9. Teko ea ho hanyetsa mocheso
Morero: Ho hlahloba ho hanyetsa mocheso oa boto.
Lisebelisoa: TMA (tlhahlobo ea thermomechanical) tester, ontong, dryer.
Mokhoa: Lokisetsa mohlala ka boholo ba 6.35 * 6.35mm.
Mehlala e ne e behoa ka ontong ka 105 ° C bakeng sa lihora tse 2, ebe e pholile mocheso oa kamore ka desiccator.
Beha sampole sethaleng sa mohlala oa teko ea TMA, 'me u behe sekhahla sa mocheso ho 10 °C/min.
Mohlala oa mocheso o nyolohetse ho 260 ° C.
Chengyuan Industry Professional Coating Machine Manufacturer
Nako ea poso: Mar-27-2023