Mukuita kwereflow ovenuyewave soldering muchina, bhodhi rePCB richaremara nekuda kwesimba rezvinhu zvakasiyana-siyana, zvichikonzera kushata kwePCBA welding.Isu tichangoongorora chikonzero cheiyo deformation yePCBA board.
1. Tembiricha yePCB board ichipfuura choto
Imwe neimwe yedunhu bhodhi ichave neiyo yakanyanya TG kukosha.Kana tembiricha yehovhoni yekuyerera yakakwira zvakanyanya, yakakwira kupfuura iyo yakanyanya TG kukosha kwebhodhi redunhu, bhodhi rinopfava uye rinokonzera deformation.
2. PCB board
Nekuzivikanwa kweteknolojia isina-lead, kutonhora kwechoto kwakakwirira kudarika kutungamirira, uye zvinodiwa neplate yakakwirira uye yakakwirira.Iyo yakaderera kukosha kweTG, iyo ingangodaro bhodhi redunhu iri kukanganisa panguva yechoto, asi iyo yakakwirira kukosha kweTG, inodhura zvakanyanya mutengo.
3. Ukobvu hwebhodhi rePCBA
Nekuvandudzwa kwezvigadzirwa zvemagetsi kune diki uye rakatetepa gwara, ukobvu hwebhodhi redunhu huri kuita hutete.Iyo yakaonda bhodhi redunhu ndeye, deformation yebhodhi inonyanya kuve yakakonzerwa nekupisa kwakanyanya panguva yekuyerera welding.
4. PCBA bhodhi saizi uye nhamba yemapuranga
Kana bhodhi redunhu rave reflow welded, inowanzoiswa mucheni yekutapurirana.Maketani ari kumativi ose anoshanda semapoinzi ekutsigira.Kana saizi yebhodhi redunhu yakakura kana nhamba yemapuranga yakakura kwazvo, zviri nyore kuti bhodhi redunhu riderere kusvika pakati, zvichikonzera deformation.
5. Kudzika kweV-Cheka
V-cut ichaparadza sub-structure yebhodhi.V-cheka ichacheka migodhi pane yepakutanga pepa hombe, uye kudzika kwakanyanya kweiyo V-yakatemwa mutsara inotungamira kune deformation yePCBA board.
6. Bhodhi rePCBA rakafukidzwa nenzvimbo yemhangura isina kuenzana
Pamusoro pedhipatimendi redunhu redhizaini rine nzvimbo yakakura yemhangura foil yekugadzika, dzimwe nguva Vcc layer yakagadzira nzvimbo yakakura yemhangura foil, apo nzvimbo idzi dzakakura dzemhangura foil haigone kugoverwa zvakaenzana mumapuranga edunhu rimwe chete, zvichakonzera kupisa kusina kuenzana. kumhanya kutonhora, mapuranga edunhu, hongu, zvakare anogona kupisa mabilges kutonhora kuderera, Kana kuwedzera uye kuputika hakugone kukonzerwa panguva imwe chete nekushushikana kwakasiyana uye deformation, panguva ino kana tembiricha yebhodhi yasvika pamuganhu wepamusoro weTG kukosha, iyo bhodhi ichatanga kupfava, zvichiguma nekusingaperi deformation.
7. Nzvimbo dzekubatanidza dzezvikamu paPCBA board
Bhodhi remazuva ano bhodhi re-multi-layer board, kune akawanda ekuchera mapoinzi ekubatanidza, aya mapoinzi ekubatanidza akakamurwa kuita kuburikidza negomba, gomba remapofu, rakavigwa gomba poindi, aya mapoinzi ekubatanidza anozodzikamisa mhedzisiro yekuwedzera kwekupisa uye kuputika kwebhodhi redunhu. , zvichiita kuti deformation yebhodhi.Izvo zviri pamusoro ndizvo zvikonzero zvikuru zvekugadziriswa kwePCBA board.Munguva yekugadzirisa uye kugadzirwa kwePCBA, zvikonzero izvi zvinogona kudzivirirwa uye deformation yePCBA board inogona kunyatso kuderedzwa.
Nguva yekutumira: Oct-12-2021