Kupeta uye kupeta kwePCB board zviri nyore kuitika muchoto chekudzosera kumashure. Sezvatinoziva tese, nzira yekudzivirira kukotama uye kuputika kwePCB board kuburikidza nechoto chekudzosera kumashure kunotsanangurwa pazasi:
1. Deredza simba rekushisa paPCB board stress
Sezvo "tembiricha" ndiyo inonyanya kukonzera kushushikana kwebhodhi, chero bedzi tembiricha yehovheni inoyerera ichidzikiswa kana mwero wekupisa uye kutonhora kwebhodhi muovheni reflow inoderedzwa, kuitika kwekukotama kweplate uye kuputika kunogona kuitika. zvakaderera zvikuru. Zvisinei, mamwe migumisiro inogona kuitika, yakadai solder short circuit.
2. Kushandisa high Tg sheet
Tg ndiyo tembiricha yekuchinja kwegirazi, ndiko kuti, tembiricha painochinja zvinhu kubva pagirazi kuenda kune rabha. Iyo yakaderera kukosha kweTg yezvinhu, nekukurumidza bhodhi rinotanga kupfava mushure mekupinda muchoto chekuyerera, uye nguva inotora kuti ive yakapfava rubber state Iyo zvakare inove yakareba, uye deformation yebhodhi ichave yakakomba zvakanyanya. . Kushandisa yakakwira Tg pepa kunogona kuwedzera kugona kwayo kutsungirira kushushikana uye deformation, asi mutengo wezvinhu wakakwira.
3. Wedzera kukora kwebhodhi redunhu
Kuti uwane chinangwa chekureruka uye kutetepa kune zvakawanda zvigadzirwa zvemagetsi, ukobvu hwebhodhi hwakasiya 1.0mm, 0.8mm, kana kunyange 0.6mm. Ukobvu hwakadaro hunofanira kuchengetedza bhodhi kubva pakukanganisa mushure memoto wekuyerera, izvo zvakaoma chaizvo. Zvinokurudzirwa kuti kana pasina chinodikanwa chekureruka uye kuonda, ukobvu hwebhodhi hunofanirwa kunge huri 1.6mm, izvo zvinogona kuderedza zvakanyanya njodzi yekukotama uye deformation yebhodhi.
4. Deredza ukuru hwebhodhi redunhu uye kuderedza nhamba yepuzzles
Sezvo mazhinji emafuta ekudzoreredza anoshandisa maketani kutyaira bhodhi redunhu kumberi, iyo yakakura saizi yedare redunhu ichave nekuda kwehuremu hwayo, dent uye deformation muchoto chekuyerera, saka edza kuisa iyo refu divi redunhu bhodhi. somupendero wepuranga. Pamusoro peketani yevira reflow, kuora mwoyo uye deformation inokonzerwa nekurema kwebhodhi redunhu inogona kuderedzwa. Kuderedzwa kwenhamba yemapanera kunobvawo pachikonzero ichi. Izvi zvinoreva kuti, kana uchipfuura muchoto, edza kushandisa muganhu wakamanikana kuti upfuure kutungamira kwechoto kusvika pazvinobvira kuti uwane yakaderera Iyo yakawanda yekuora mwoyo deformation.
5. Yakashandiswa tireyi yevira remoto
Kana nzira dziri pamusoro dzakaoma kuwana, yekupedzisira ndeye kushandisa reflow carrier / template kuderedza kuwanda kwe deformation. Chikonzero nei reflow carrier / template inogona kuderedza kupeta kweplate imhaka yekuti kungave kuri kuwedzera kwemafuta kana kutonhora kutonhora, zvinotarisirwa Iyo tireyi inogona kubata bhodhi redunhu uye kumirira kusvika tembiricha yebhodhi redunhu yakaderera kupfuura Tg. kukosha uye kutanga kuomesa zvakare, uye unogonawo kuchengetedza ukuru hwebindu.
Kana iyo imwe-layer pallet isingakwanise kuderedza deformation yedare redunhu, chivharo chinofanira kuwedzerwa kuti chisungirire bhodhi redunhu nepamusoro uye pasi pallets. Izvi zvinogona kuderedza zvakanyanya dambudziko rekutenderera bhodhi deformation kuburikidza nereflow furnace. Nekudaro, tireyi yechoto iyi inodhura zvakanyanya, uye basa remaoko rinodiwa kuisa nekudzokorodza matireyi.
6. Shandisa Router panzvimbo yeV-Cut's sub-board
Sezvo V-Cut ichaparadza simba rekugadzirisa kwepaneti pakati pemapuranga edunhu, edza kusashandisa V-Cut sub-board kana kuderedza kudzika kweV-Cut.