SMT reflow ovenbụ ihe dị mkpa na-ere ahịa na usoro SMT, nke bụ n'ezie ngwakọta nke oven oven.Isi ọrụ ya bụ ikwe ka ihe na-edozi ya na oven reflow, a ga-agbaze onye na-ere ya na okpomọkụ dị elu mgbe onye na-ere ya nwere ike ime ka SMD components na bọọdụ sekit ọnụ na ngwa ịgbado ọkụ.Na-enweghị SMT reflow soldering akụrụngwa usoro SMT agaghị ekwe omume mezue nke mere na electronic components na sekit osisi soldering ọrụ.Na SMT n'elu oven tray bụ ngwá ọrụ kachasị mkpa mgbe ngwaahịa n'elu reflow soldering, lee ebe a ị nwere ike inwe ajụjụ ụfọdụ: SMT n'elu oven tray bụ gịnị?Gịnị bụ ebumnobi nke iji SMT trays overbake ma ọ bụ ebu ngafe?Nke a bụ anya ihe SMT overbake tray bụ n'ezie.
1. Gịnị bụ SMT overbake tray?
N'ezie, a na-eji ihe a na-akpọ SMT over-burner tray ma ọ bụ ihe na-ebu ọkụ, n'ezie, na-ejigide PCB wee buru ya n'azụ na tray oven ma ọ bụ ebu.Ndị na-ebu tray na-enwekarị kọlụm nguzozi nke a na-eji dozie PCB iji gbochie ya ịgba ọsọ ma ọ bụ nrụrụ, ụfọdụ n'ime ndị na-ebu tray dị elu ga-agbakwunyekwa mkpuchi, na-emekarị maka FPC, ma wụnye magnet na, budata ngwá ọrụ ahụ mgbe ị na-agbanye iko mmiri. na, ya mere SMT mgbawa nhazi osisi nwere ike izere PCB deformation.
2. Iji SMT n'elu oven tray ma ọ bụ n'elu nzube nke oven ebu
Mmepụta SMT mgbe ị na-eji tray oven bụ iji belata nrụrụ PCB ma gbochie akụkụ oke ibu daa, nke abụọ metụtara SMT na mpaghara ọkụ dị elu nke ọkụ, n'ọtụtụ ngwaahịa ugbu a na-eji usoro enweghị ndu. , edu-free SAC305 solder mado gbazee tin okpomọkụ nke 217 ℃, na SAC0307 solder mado gbazee tin okpomọkụ dara banyere 217 ℃ ~ 225 ℃, kasị elu okpomọkụ azụ solder na-n'ozuzu tụrụ aro na n'etiti 240 ~ 250 ℃ , anyị na-ahọrọkarị efere FR4 maka Tg150 n'elu.Nke ahụ bụ, mgbe PCB abanye na elu okpomọkụ ebe nke soldering ọkụ, n'ezie, ọ dịwo anya gafere ya iko mbufe okpomọkụ n'ime roba steeti, na roba steeti PCB ga-deformed naanị na-egosi ya ihe onwunwe àgwà dị nnọọ. nri.
Ejikọtara na thinning nke osisi ọkpụrụkpụ, si n'ozuzu ọkpụrụkpụ nke 1.6mm ruo 0.8mm, na ọbụna 0.4mm PCB, ndị dị otú ahụ a mkpa sekit osisi na baptizim nke elu okpomọkụ mgbe soldering ọkụ, ọ dị mfe n'ihi na elu. okpomọkụ na nsogbu nrụrụ osisi.
SMT n'elu oven tray ma ọ bụ n'elu oven na-ebu bụ imeri PCB deformation na akụkụ na-ada nsogbu na-apụta, ọ na-ejikarị na-eji ogidi n'ọnọdu dozie PCB n'ọnọdu oghere, na efere elu okpomọkụ deformation n'ụzọ dị irè ịnọgide na-enwe udi nke PCB. iji belata nrụrụ efere, n'ezie, a ga-enwerịrị ogwe ndị ọzọ iji nyere aka n'etiti ọnọdụ nke efere ahụ n'ihi mmetụta nke ike ndọda nwere ike imebi nsogbu nke imi mmiri.
Ke adianade do, ị nwekwara ike iji bufee ibu adịghị mfe deform àgwà nke imewe nke ọgịrịga ma ọ bụ nkwado isi n'okpuru oke ibu akụkụ iji hụ na akụkụ adịghị ada pụọ nsogbu, ma imewe nke a ụgbọelu ga-adị nnọọ ukwuu. Kpachara anya ka ịzere ihe nkwado dị oke elu iji bulie akụkụ nke akụkụ nke abụọ kpatara ezighi ezi nke nsogbu ibipụta ihe na-ere ihe na-eme.
Oge nzipu: Eprel-06-2022