Nhanganyaya.
Iyo rework process inogara isingatariswe nemafekitori mazhinji, asi izvo chaizvo zvisingadzivisiki kukanganisa kunoita kuti rework yakakosha mukuita kwegungano.Nokudaro, iyo isina-yakachena rework process chikamu chakakosha cheiyo chaiyo isina-yakachena musangano maitiro.Ichi chinyorwa chinotsanangura kusarudzwa kwezvinhu zvinodiwa kune isina-yakachena rework process, yekuyedza uye nzira dzekuita.
I. Kwete-yakachena rework uye kushandiswa kweCFC yekuchenesa pakati pekusiyana
Pasinei nokuti ndeupi rudzi rwekugadzirisa chinangwa chayo chakafanana - mugungano redunhu rakadhindwa pamusoro pekubvisa kusina kuparadza uye kuiswa kwezvikamu, pasina kukanganisa kushanda uye kuvimbika kwezvikamu.Asi iwo chaiwo maitiro e-asina-yakachena rework uchishandisa CFC yekuchenesa rework inosiyana pakuti misiyano iri.
1. mukushandiswa kweCFC yekuchenesa rework, zvikamu zvakagadziridzwa kuti zvipfuure nzira yekuchenesa, nzira yekuchenesa inowanzofanana nekuchenesa kunoshandiswa kuchenesa dunhu rakadhindwa mushure megungano.Kuchenesa-yemahara rework haisi iyi yekuchenesa maitiro.
2. mukushandiswa kweCFC yekuchenesa rework, kushanda kuitira kuti uwane majoini akanaka ekutengesa mukati mezvikamu zvakagadziridzwa uye zvakadhindwa redunhu bhodhi nzvimbo ndeye kushandisa solder flux kubvisa oxide kana kumwe kusvibiswa, nepo pasina mamwe maitiro ekudzivirira kusvibiswa kubva kunzvimbo dzakadai se mafuta emunwe kana munyu, nezvimwewo .. Kunyange kana kuwandisa kwe solder uye kumwe kusvibiswa kuripo mugungano redunhu rakadhindwa, nzira yekupedzisira yekuchenesa ichavabvisa.Kwete-yakachena rework, kune rumwe rutivi, inoisa zvinhu zvose mugungano redunhu rakadhindwa, zvichiita kuti pave nezvinetso zvakasiyana-siyana zvakadai sekuvimbika kwenguva refu kwemajoini e solder, kuwirirana kwekugadzirisa, kusvibiswa uye zvizoro zvehutano zvinodiwa.
Sezvo pasina-yakachena rework isingaonekwi nekuchenesa nzira, kuvimbika kwenguva refu kwemajoini e solder kunogona kuvimbiswa chete nekusarudza iyo yakakodzera rework zvinhu uye kushandisa nzira yakakodzera solder.Mu-no-clean rework, solder flux inofanira kunge iri itsva uye panguva imwechete yakanyatsoshanda kuti ibvise okisidhi uye kuwana kunaka kwemvura;zvakasara pagungano redunhu rakadhindwa zvinofanira kuva zvisina kwazvakarerekera uye zvisingakanganisi kuvimbika kwenguva refu;mukuwedzera, zvakasara pagungano redunhu rakadhindwa zvinofanira kuwirirana nezvakagadzirwazve uye zvitsva zvinoumbwa nokubatana pamwe chete zvinofanirawo kuva zvisina kwazvakarerekera.Kazhinji kuvuza pakati pemakondakita, oxidation, electromigration uye dendrite kukura kunokonzerwa nekusawirirana kwezvinhu uye kusvibiswa.
Hunhu hwekuonekwa kwechigadzirwa chemazuva ano zvakare inyaya yakakosha, sezvo vashandisi vakajaira kusarudza yakachena uye inopenya yakadhindwa magungano edunhu, uye kuvapo kwemhando ipi neipi inooneka yakasara pabhodhi inoonekwa seyakasvibiswa uye yakarambwa.Zvisinei, masara anooneka anowanikwa muhutano husina kuchena uye haagamuchirwi, kunyange zvazvo zvose zvakasara kubva pakugadzirisa zvakare hazvina kwazvakarerekera uye hazvikanganisi kuvimbika kwegungano redunhu rakadhindwa.
Kugadzirisa matambudziko aya kune nzira mbiri: imwe ndeyekusarudza yakakodzera rework zvinhu, yayo isina-yakachena rework mushure mehutano hwemasoja majoini mushure mekuchenesa neCFC seyakanaka semhando;chechipiri ndechekuvandudza manyorerwo ekugadzirisa maitiro uye maitiro ekuwana yakavimbika isina-yakachena soldering.
II.Rework zvinhu kusarudzwa uye kuenderana
Nekuda kwekuenderana kwezvinhu, hapana-yakachena gungano maitiro uye rework maitiro akabatana uye anoenderana.Kana zvinhu zvisina kusarudzwa nemazvo izvi zvinotungamira kukudyidzana kunoderedza hupenyu hwechigadzirwa.Kuyedzwa kwekuenderana kazhinji ibasa rinogumbura, rinodhura uye rinotora nguva.Izvi zvinodaro nekuda kwehuwandu hukuru hwezvinhu zvinosanganisirwa, zvinodhura bvunzo zvinonyungudutsa uye kureba kuenderera mberi nzira dzekuyedza etc. Zvishandiso zvinowanzobatanidzwa mukuita gungano zvinoshandiswa munzvimbo hombe, zvinosanganisira solder paste, wave solder, zvinonamira uye mafomu-anokodzera machira.Iyo rework process, kune rumwe rutivi, inoda zvimwe zvinhu senge rework solder uye solder waya.Zvese zvezvinhu izvi zvinoda kuenderana nechero kuchenesa kana mamwe marudzi ekuchenesa anoshandiswa mushure mekudhindwa redunhu bhodhi masking uye solder paste misprinting.
Nguva yekutumira: Oct-21-2022