BGA welding, kuisa zviri nyore chidimbu chenamira neBGA zvinoumba redunhu bhodhi, kuburikidzareflow ovenprocess yekuwana welding.Kana iyo BGA inogadziriswa, iyo BGA inobatanidzwawo nemaoko, uye BGA inoparadzaniswa uye inoputirwa neBGA kugadzirisa tafura uye mamwe maturusi.
Maererano ne tembiricha curve,reflow soldering muchinainogona kukamurwa kuita zvikamu zvina: preheating zone, nzvimbo yekuchengetedza kupisa, reflow zone uye inotonhora nzvimbo.
1. Preheating zone
Iyo inozivikanwawo seye ramp zone, inoshandiswa kusimudza tembiricha yePCB kubva kune ambient tembiricha kuenda kune inodiwa inoshanda tembiricha.Munharaunda iyi, bhodhi redunhu uye chikamu zvine maitiro akasiyana ekupisa, uye iwo chaiwo tembiricha yekukwira kwayo yakasiyana.
2. Thermal insulation zone
Dzimwe nguva inonzi nzvimbo yakaoma kana yakanyorova, nzvimbo iyi inowanzoita 30 kusvika ku50 muzana yenzvimbo yekupisa.Chinangwa chikuru chenzvimbo inoshanda ndechekudzikamisa tembiricha yezvikamu paPCB uye kudzikisa kusiyana kwekushisa.Bvumira nguva yakakwana munzvimbo ino kuti chikamu chekupisa chibatane nekupisa kwechikamu chidiki uye kuve nechokwadi chekuti flux mu solder paste yanyungudika.Pakupera kwenzvimbo inoshanda, maokisi ari pamapadhi, mabhora ekutengesa, uye mapini echikamu anobviswa, uye tembiricha yebhodhi rose yakaenzana.Izvo zvinofanirwa kucherechedzwa kuti zvese zvikamu paPCB zvinofanirwa kunge zvine tembiricha yakafanana pakupera kwenzvimbo iyi, zvikasadaro kupinda mureflux zone kunokonzeresa dzakasiyana-siyana dzakaipa welding phenomena nekuda kwekushisa kusina kuenzana kwechikamu chimwe nechimwe.
3. Reflux zone
Dzimwe nguva inodaidzwa kuti peak kana yekupedzisira kudziyisa zone, nzvimbo iyi inoshandiswa kukwidza tembiricha yePCB kubva patembiricha inoshanda kusvika kune inokurudzirwa tembiricha.Iyo tembiricha inoshanda inogara yakadzikira zvishoma pane inonyungudika yealloy, uye tembiricha yepamusoro inogara iri panzvimbo yekunyungudika.Kuisa tembiricha munzvimbo ino yakakwira zvakanyanya kuchaita kuti kutsetseka kwetembiricha kukwire kudarika 2 ~ 5 ℃ pasekondi, kana kuita kuti tembiricha yepamusoro yereflux ikwire pane inokurudzirwa, kana kushanda kwenguva yakareba kunogona kukonzera kuremara zvakanyanya, kudonhedza kana kupisa. PCB, uye kukuvadza kutendeseka kwezvikamu.Iyo tembiricha yepamusoro yereflux yakaderera pane inokurudzirwa, uye inotonhora welding uye zvimwe zvinokanganisa zvinogona kuitika kana nguva yekushanda ipfupi.
4. Nzvimbo yekutonhora
Iyo tin alloy poda ye solder paste munzvimbo ino yakanyunguduka uye yakanyatsonyorovesa pasi kuti ibatanidzwe uye inofanirwa kutonhodzwa nekukurumidza sezvinobvira kufambisa kuumbwa kwemakristasi alloy, inopenya solder joint, chimiro chakanaka uye yakaderera yekubata Angle. .Kutonhodza zvishoma nezvishoma kunoita kuti tsvina yakawanda yebhodhi iputsikire mugaba, zvichiita kuti pave nemavara asina kusimba, ane hutsinye.Muzviitiko zvakanyanyisa, zvinogona kukonzera kushomeka kwerata uye kushomeka kwejoint bonding.
NeoDen inopa yakazara SMT mutsetse mhinduro, kusanganisira SMT reflow oven, wave soldering muchina, pick nekuisa muchina, solder paste printer, PCB loader, PCB unloader, chip mounter, SMT AOI muchina, SMT SPI muchina, SMT X-Ray muchina, SMT dhizaini yemutsetse midziyo, PCB yekugadzira Equipment SMT spare parts, etc chero mhando dzeSMT michina yaungade, ndapota taura nesu kuti uwane rumwe ruzivo:
Zhejiang NeoDen Technology Co., Ltd
Email:info@neodentech.com
Nguva yekutumira: Kubvumbi-20-2021