Ndezvipi zvitsva zvinodiwa izvo zviri kuwedzera kukura-yemahara maitiro anoisa pahovhoni yekuyerera?

Ndezvipi zvitsva zvinodiwa izvo zviri kuwedzera kukura-yemahara maitiro anoisa pahovhoni yekuyerera?

Isu tinoongorora kubva pane zvinotevera zvikamu:

l Maitiro ekuwana diki lateral tembiricha musiyano

Sezvo iyo inotungamira-isina soldering process hwindo idiki, kutonga kweiyo lateral tembiricha musiyano kwakakosha zvikuru.Tembiricha mu reflow soldering inowanzokanganiswa nezvinhu zvina:

(1) Kufambiswa kwemhepo inopisa

Iwo azvino anotungamira-asina reflow maovheni ese anotora 100% yakazara inopisa mweya kupisa.Mukuvandudzwa kwemaovheni ekuyerera, nzira dzekudziya dze infrared dzakaonekwa zvakare.Nekudaro, nekuda kwekudziya kwe infrared, iyo infrared absorption uye kuratidzira kweakasiyana mavara maturusi akasiyana uye mumvuri mhedzisiro inokonzerwa nekuvharika kwemidziyo yepakutanga yakatarisana.Mamiriro maviri aya achakonzera kusiyana kwekushisa.Lead-isina soldering ine njodzi yekusvetuka kubva pahwindo rekuita, saka tekinoroji yekudziya infrared yakabviswa zvishoma nezvishoma munzira yekudziya yeovheni inoyerera.Mukutungamirira-isina soldering, kupisa kwekushisa kunoda kusimbiswa.Kunyanya kumudziyo wepakutanga une simba guru rekupisa, kana kukwana kwekushisa kwekushisa kusingakwanisi kuwanikwa, chiyero chekupisa chinenge chasara shure kwechigadzirwa chine chiduku chekupisa, zvichikonzera kusiyana kwekushisa kwemashure.Ngatitarisei maitiro maviri anopisa ekufambisa mhepo muFigure 2 neFigure 3.

Mufananidzo 2 Nzira yekufambisa mhepo inopisa 1

Mufananidzo 2 Nzira yekufambisa mhepo inopisa 1

Mhepo inopisa muMufananidzo 2 inoputika kubva mumakomba endiro yekupisa, uye kuyerera kwemhepo inopisa haina gwara rakajeka, iro rinonyanya kukanganisa, saka kupisa kwekushisa hakuna kunaka.

Dhizaini yeFigure 3 yakashongedzerwa neinongedzo yakawanda-inopfungaira nozzles yemhepo inopisa, saka kuyerera kwemhepo inopisa inonangana uye ine kutungamira kwakajeka.Iyo yekupisa yekupisa mhedzisiro yekudziya kwemhepo inopisa inowedzera neinosvika 15%, uye kuwedzera kwekupisa kwekushisa kuchaita basa rakakura mukudzikisa lateral tembiricha musiyano wemidziyo mikuru uye diki yekupisa.

Dhizaini yeFigure 3 inogonawo kuderedza kupindira kwemhepo ye lateral pane welding yebhodhi redunhu nokuti kuyerera kwemhepo inopisa ine nzira yakajeka.Kuderedza mhepo yeparutivi haingodzivise zvidimbu zvidiki senge 0201 pabhodhi redunhu kubva pakupeperetswa, asi zvakare kuderedza kupindirana pakati penzvimbo dzakasiyana dzekupisa.

(1) Chain speed control

Kudzora kwekumhanya kweketani kuchakanganisa lateral tembiricha musiyano wedunhu bhodhi.Kazhinji kutaura, kudzikisa kumhanya kweketani kunopa yakawanda yekudziya nguva yemidziyo ine hombe yekupisa huwandu, nekudaro ichidzikisa lateral tembiricha musiyano.Asi mushure mezvose, kugadzika kwechivharo chekushisa kwechoto kunoenderana nezvinodiwa zve solder paste, saka kuderedzwa kusingagumi kwekumhanya kweketani hakusi kwechokwadi mukugadzirwa chaiko.

(2) Kumhanya kwemhepo uye kutonga kwevhoriyamu

Isu takaita kuyedza kwakadai, kuchengetedza mamwe mamiriro muovheni reflow asina kuchinjika uye inongoderedza kukurumidza kwe fan muovheni reflow ne30%, uye tembiricha pabhodhi redunhu inodonha neanenge gumi madhigirii.Zvinogona kuonekwa kuti kutonga kwekumhanya kwemhepo uye huwandu hwemhepo hwakakosha pakutonga kwekushisa kwechoto.