Nzira yekudzivisa bhodhi redunhu rakadhindwa warping

1. Deredza mhedzisiro yekushisa pabhodhi kunetseka
Sezvo [tembiricha] ndiyo inonyanya kukonzeresa kushushikana kwebhodhi, chero bedzi tembiricha yehovheni inoyerera ichidzikiswa kana kumhanya kwebhodhi kupisa uye kutonhora muhovhoni yekuyerera kunoderedzwa, iyo warpage yePCB inogona kuderedzwa zvakanyanya.Zvisinei, zvimwe zvingangoitika zvinogona kuitika, zvakadai solder shorts.

2. Shandisa yakakwirira Tg sheet
Tg ndiyo tembiricha yekushanduka kwegirazi, ndiko kuti, tembiricha painochinja zvinhu kubva pagirazi kuenda kune rabha.Iyo yakaderera kukosha kweTg yezvinhu, nekukurumidza bhodhi rinotanga kupfava mushure mekupinda muovheni yekuyerera, uye nguva inotora kuti ive yakapfava rubber state.Iyo zvakare ichave yakareba, uye deformation yebhodhi ichave yakakomba zvakanyanya.Iko kushandiswa kwepamusoro Tg pepa kunogona kuwedzera kugona kwayo kutsungirira kushushikana uye deformation, asi mutengo wezvinhu zvinoenderanawo wakanyanya kukwirira.

3. Wedzera kukora kwebhodhi redunhu
Kuti uwane kureruka uye kutetepa ukobvu hwezvigadzirwa zvemagetsi zvakawanda, ukobvu hwebhodhi hwakasiiwa pa 1.0mm, 0.8mm, uye kunyange 0.6mm.Ukobvu hwakadaro hunofanira kuchengetedza bhodhi kuti risave nekuremara mushure mekupfuura nemuchoto che reflow, izvo zvakaoma chaizvo.Iyo PCB fekitori inokurudzira kuti kana pasina chinodiwa chekureruka uye kutetepa, bhodhi rinogona kushandisa ukobvu hwe1.6mm, izvo zvinogona kuderedza zvakanyanya njodzi yewarpage uye deformation yePCB board.

4. Deredza ukuru hwebhodhi redunhu uye kuderedza nhamba yemapuranga
Sezvo vakawanda reflow ovheni kushandisa cheni kutyaira redunhu bhodhi mberi, mukuru redunhu bhodhi richava dented uye kuremara muchoto reflow nokuda kwayo uremu, saka edza kuisa refu divi redunhu bhodhi sezvo bhodhi mupendero.Paketani yevira reflow, iyo concave deformation inokonzerwa nekurema kwebhodhi redunhu pachayo inogona kuderedzwa.Ichi zvakare chikonzero chekudzikisa huwandu hwemapaneru.Izvi zvinoreva kuti, kana uchipfuura choto, edza kushandisa rutivi rwakamanikana kuti ruve perpendicular kunzira yechoto, iyo inogona kuwana yakaderera Iyo yakawanda ye concave deformation.

5. Shandisa chigadziro chetirayi yevheni
Kana nzira dziri pamusoro dzakaoma kubudirira, chinhu chekupedzisira ndechokushandisa tereyi yevheni (reflow soldering carrier / template) kuderedza deformation yebhodhi redunhu.Iyo musimboti wekuti oven tray fixture inogona kuderedza warpage yePCB board imhaka yekuti zvinhu zvechigadziriso zvakajairika.Aluminium alloy kana dombo rekugadzira richashandiswa kuve nekupisa kwekushisa kwakanyanya, saka fekitori yePCB inoregedza bhodhi redunhu richipfuura nepakati pekupisa kwekushisa kwekuwedzera kwevheni yekuyerera uye kutonhora kunotonhora mushure mekutonhora pasi.Iyo tray inogona kutamba basa rekudzikamisa bhodhi redunhu.Mushure mekunge tembiricha yeplate yakaderera pane kukosha kweTg uye inotanga kupora uye kuomesa, saizi yepakutanga inogona kuchengetedzwa.

Kana iyo single-layer tray fixture haigone kuderedza deformation ye bhodhi redunhu , iwe unofanirwa kuwedzera chivharo chevhavha kuti ubatanidze bhodhi redunhu nepamusoro uye rezasi matireyi, izvo zvinogona kuderedza zvakanyanya deformation yebhodhi redunhu kuburikidza nehovhoni yekuyerera..Nekudaro, iyi tireyi yehovhoni inodhura zvakanyanya, uye iwe unofanirwa kuwedzera basa kuti uise uye kudzoreredza tireyi.

6. Shandisa Router panzvimbo yeV-Cut's sub-board
Sezvo V-Cut ichaparadza simba rekugadzirisa kwepaneti pakati pemapuranga, edza kusashandisa V-Cut sub-board, kana kuderedza kudzika kweV-Cut.

Chero mumwe mubvunzo, ndapota RFQ .