1. Rework rework hwaro: rework rework haina magwaro ekugadzira uye mirau, isingatenderwe maererano nezvinodiwa, hapana yakatsaurirwa rework process process protocols.
2. Nhamba ye rework inobvumirwa kune imwe neimwe solder joint: rework inobvumirwa kune akaremara solder majoini, uye nhamba rework kune imwe solder joint haifaniri kudarika katatu, zvikasadaro solder chikamu kukuvara.
3. Kushandiswa kwezvikamu zvakabviswa: zvikamu zvakabviswa mumusimboti hazvifaniri kushandiswa zvakare, kana uchida kushandisa, zvinofanira kunge zvichienderana nemagetsi ekutanga emagetsi ezvikamu uye maitiro ekuongorora maitiro ekuongorora, kusangana nezvinodiwa usati wabvumira kuiswa.
4. Huwandu hwe desoldering padhi yega yega: imwe neimwe yakadhindwa padhi inofanirwa kunge iri desoldering oparesheni (ndiko kuti, kungobvumidza imwe chete kutsiva yezvikamu), a qualified solder joint intermetallic compound (IMC) ukobvu hwe1.5 kusvika 3.5µm, ukobvu huchakura. mushure mekunyungudika, kunyangwe kusvika ku50µm, iyo solder joint inova brittle, simba rewelding rinodzikira, kune njodzi dzakakomba dzekuvimbika pasi pemamiriro ekudengenyeka;uye kugadzirisa IMC kunoda tembiricha yepamusoro, zvikasadaro hazvigoneke kubvisa IMC.Iyo mhangura yemhangura pakubuda kweburi-gomba ndiyo thinnest, uye padhi inowanzoputsika kubva pano mushure mekugadzirisa zvakare;nekuwedzera kwekupisa kweZ-axis, iyo yemhangura layer inodzima, uye padhi inodzikira nekuda kwekuvharirwa kweiyo lead-tin solder joint.Lead-isina kesi inokwevera kumusoro padhi yese: PCB nekuda kwegirazi fiber uye epoxy resin ine mhute yemvura, mushure mekupisa delamination: akawanda welding, iyo padhi iri nyore kubatanidza, uye substrate kupatsanurwa.
5. Surface gomo uye yakavhenganiswa kugadzwa PCBA gungano pashure welding kukotama uye kukanganisa zvinodiwa: pamusoro gomo uye muvhenganiswa kugadzwa PCBA gungano pashure welding kukotama uye kukanganisa isingasviki 0.75% yezvinodiwa
6. Nhamba yose yePCB kugadziriswa kwegungano: nhamba yose yekugadzirisa kwegungano rePCB inogumira kune matanhatu, yakawandisa rework uye kugadziriswa kunokanganisa kuvimbika.
Nguva yekutumira: Sep-23-2022