Ebumnuche kachasị mkpa maka ọgwụgwọ elu PCB bụ iji hụ na ọ dị mma weldability ma ọ bụ ihe ọkụ eletrik. N'ihi na ọla kọpa dị na okike na-adị n'ụdị oxides na ikuku, o yighị ka a ga-ejigide ya dị ka ọla kọpa mbụ ruo ogologo oge, ya mere ọ dị mkpa ka a na-emeso ya na ọla kọpa.
Enwere ọtụtụ usoro ọgwụgwọ elu PCB. Ihe ndị a na-ahụkarị bụ flat, organic welded protection agents (OSP), full-board nickel-plated gold, Shen Jin, Shenxi, Shenyin, chemical nickel, gold, and electroplating hard gold. Mgbaàmà.
1. Ikuku na-ekpo ọkụ dị larịị (tin ịgbasa)
Usoro izugbe nke usoro nhazi ikuku na-ekpo ọkụ bụ: micro erosion → preheating → mkpuchi ịgbado ọkụ → ịgba tin → nhicha.
Ikuku na-ekpo ọkụ dị larịị, nke a makwaara dị ka ikuku na-ekpo ọkụ welded (nke a na-akpọkarị tin spray), nke bụ usoro mkpuchi nke agbaze agbaze (lead) agbadoro n'elu PCB na iji kpo oku mpikota onu nhazi ikuku (ịfụ) iji mepụta. oyi akwa nke mgbochi ọla kọpa oxidation. Ọ nwekwara ike na-enye ezigbo weldability mkpuchi n'ígwé. Weld dum na ọla kọpa nke ikuku na-ekpo ọkụ na-eme ka ọla kọpa -tin metal interductive compound na ngwakọta. PCB na-emikpukarị n'ime mmiri na-agbaze agbaze; mma ifufe na-efesa mmiri mmiri welded larịị mmiri mmiri welded tupu welded;
A na-ekewa ọkwa nke ikuku ọkụ na ụdị abụọ: vetikal na kehoraizin. A na-ekwenyekarị na ụdị kwụ ọtọ ka mma. Ọ bụ tumadi kehoraizin na-ekpo ọkụ ikuku rectification oyi akwa bụ dịtụ edo, nke nwere ike nweta akpaghị aka mmepụta.
Uru: ogologo oge nchekwa; mgbe PCB gwụchara, elu nke ọla kọpa na-adị mmiri kpamkpam (a na-ekpuchi tin kpamkpam tupu ịgbado ọkụ); kwesịrị ekwesị maka ịgbado ọkụ ụzọ; usoro tozuru okè, ọnụ ala dị ala, kwesịrị ekwesị maka nlele anya na ule eletrik
Ihe ọghọm: Ọ dịghị mma maka ijikọ eriri; n'ihi nsogbu nke elu elu, enwekwara ike na SMT; adịghị mma maka nhazi mgbanwe kọntaktị. Mgbe ịgbasa tin, ọla kọpa ga-agbaze, na osisi ahụ dị elu okpomọkụ. Karịsịa efere ndị gbara ọkpụrụkpụ ma ọ bụ nke dị gịrịgịrị, ịgbasa tin nwere oke, ọrụ mmepụta adịghịkwa mma.
2, organic weldability protectant (OSP)
Usoro n'ozuzu bụ: degreasing -> micro-etching -> pickling -> nhicha mmiri dị ọcha -> mkpuchi organic -> nhicha, na njikwa usoro dị mfe iji gosipụta usoro ọgwụgwọ.
OSP bụ usoro maka ebipụta bọọdụ sekit (PCB) ọla kọpa foil n'elu ọgwụgwọ dịka iwu RoHS chọrọ. OSP dị mkpụmkpụ maka Organic Solderability Preservatives, makwaara dị ka organic solderability preservatives, makwaara dị ka Preflux na bekee. N'ikwu ya n'ụzọ dị mfe, OSP bụ ihe nkiri akpụkpọ anụ nke toro kemịkalụ n'elu ọla kọpa dị ọcha, nke na-adịghị. Ihe nkiri a nwere mgbochi-oxidation, okpomọkụ ujo, mmiri na-eguzogide, iji chebe ọla kọpa elu na nkịtị gburugburu ebe obibi agaghịkwa nchara (oxidation ma ọ bụ vulcanization, wdg); Otú ọ dị, na ụdi ịgbado ọkụ elu okpomọkụ, nke a na-echebe film ga-adị mfe wepụrụ site flux ngwa ngwa, nke mere na ekpughere dị ọcha ọla kọpa elu nwere ike ozugbo jikọtara na wụrụ awụ solder na a nnọọ obere oge na-aghọ a siri ike solder nkwonkwo.
Uru: Usoro a dị mfe, elu dị larịị, dabara adaba maka ịgbado ọkụ na-enweghị isi na SMT. Ọ dị mfe ịmegharị ọrụ, arụmọrụ mmepụta dị mma, dabara adaba maka ọrụ ahịrị kwụ ọtọ. Bọdụ ahụ dabara adaba maka nhazi ọtụtụ (dịka OSP+ENIG). Ọnụ ala dị ala, enyi na gburugburu ebe obibi.
Mwepu: mmachi nke ọnụ ọgụgụ nke reflow ịgbado ọkụ (otutu ịgbado ọkụ oké, ihe nkiri a ga-ebibi, ihu ọma 2 ugboro nsogbu). Ọdịghị mma maka teknụzụ crimp, njikọ waya. Nchọpụta anya na nchọpụta eletrik adịghị adaba. A chọrọ nchekwa gas N2 maka SMT. SMT rework adịghị mma. Ihe nchekwa dị elu chọrọ.
3, efere niile nwere ọla edo nickel
Plate nickel plating bụ PCB n'elu onye nduzi na-ebu ụzọ tinye akwa nickel wee tinye ya na akwa ọla edo, nickel plating bụ isi iji gbochie mgbasa n'etiti ọla edo na ọla kọpa. Enwere ụdị ọla edo electroplated nickel abụọ: ọla edo dị nro (ọlaedo dị ọcha, elu ọla edo anaghị enwu gbaa) na akwa ọla edo siri ike (ọ dị nro na nke siri ike, nke na-eguzogide ọgwụ, nke nwere ihe ndị ọzọ dị ka cobalt, ọla edo na-enwu gbaa). A na-ejikarị ọla edo dị nro mee ihe maka mgbawa nkwakọ ngwaahịa ọla edo; A na-ejikarị ọla edo siri ike na njikọ eletrik anaghị agbado.
Uru: Ogologo oge nchekwa> ọnwa 12. Kwesịrị ekwesị maka imewe mgbanwe kọntaktị na ijikọ waya ọla edo. Kwesịrị ekwesị maka ule eletrik
Adịghị ike: ọnụ ahịa dị elu, ọla edo buru ibu. Mkpịsị aka eletrọnịkị chọrọ nhazi waya ọzọ. N'ihi na ọkpụrụkpụ nke ọla edo adịghị agbanwe agbanwe, mgbe etinyere ya na ịgbado ọkụ, ọ nwere ike ime ka embrittlement nke nkwonkwo solder n'ihi oke ọla edo, na-emetụta ike. Electroplating elu undo nsogbu. Electroplated nickel ọla edo anaghị ekpuchi nsọtụ waya. Ọdịghị adabara aluminom waya bonding.
4. Sik gold
Usoro n'ozuzu bụ: pickling Cleaning -> Micro-corrosion -> preleaching -> activation -> electroless nickel plating -> chemical gold leaching; Enwere tankị kemịkalụ 6 na usoro a, gụnyere ihe fọrọ nke nta ka ọ bụrụ 100 ụdị kemịkalụ, usoro a dịkwa mgbagwoju anya karị.
A na-ekechi ọla edo na-acha odo odo na nnukwu ọla edo ọla edo dị mma na-acha ọla edo, nke nwere ike ichebe PCB ogologo oge; Na mgbakwunye, ọ nwekwara nnabata gburugburu ebe obibi nke usoro ọgwụgwọ elu ndị ọzọ enweghị. Tụkwasị na nke ahụ, imiri ọlaedo nwekwara ike igbochi mgbasa nke ọla kọpa, nke ga-erite uru mgbakọ na-enweghị ndu.
Uru: adịghị mfe oxidize, nwere ike ịchekwa ruo ogologo oge, elu bụ ewepụghị, adabara ịgbado ọkụ ezi ọdịiche atụdo na components na obere solder nkwonkwo. bọọdụ PCB ahọrọ nke ọma nwere bọtịnụ (dị ka bọọdụ ekwentị mkpanaaka). Enwere ike ịmegharị ịgbado ọkụ ugboro ugboro na-enweghị nnukwu ike weldability. Enwere ike iji ya dị ka ihe ndabere maka wiwi COB (Chip On Board).
Mwepu: ọnụ ahịa dị elu, ike ịgbado ọkụ na-adịghị mma, n'ihi na iji usoro nickel na-abụghị electroplated, dị mfe ịnweta nsogbu diski ojii. Ngwunye nickel oxidizes ka oge na-aga, na ntụkwasị obi ogologo oge bụ okwu.
5. Imi agba agba
Ebe ọ bụ na ihe niile na-ere ahịa ugbu a na-adabere na tin, oyi akwa tin nwere ike dakọtara na ụdị ihe ọ bụla. Usoro nke imirikiti tin nwere ike ịmepụta ogige dị larịị ọla kọpa-tin metal intermetallic ogige, nke na-eme ka tin na-agba mmiri nwere otu ihe ahụ dị mma dị ka ikuku na-ekpo ọkụ na-edozi n'enweghị nsogbu isi ọwụwa dị larịị nke nhazi ikuku ọkụ; Enweghị ike ịchekwa efere tin ahụ ogologo oge, a ga-eme mgbakọ ahụ dịka usoro nke ịgbanye mmiri si dị.
Uru: Kwesịrị ekwesị maka mmepụta ahịrị kwụ ọtọ. Kwesịrị ekwesị maka nhazi ahịrị dị mma, dabara adaba maka ịgbado ọkụ na-enweghị isi, karịsịa maka teknụzụ crimping. Ezigbo flatness, dabara maka SMT.
Ọdịmma: A na-achọ ọnọdụ nchekwa dị mma, ọkacha mma ọ bụghị karịa ọnwa 6, iji chịkwaa uto tin whisker. Ọ dịghị mma maka imewe mgbanwe kọntaktị. Na usoro mmepụta, usoro ihe nkiri na-eguzogide ịgbado ọkụ dị oke elu, ma ọ bụghị ya, ọ ga-eme ka ihe nkiri na-eguzogide ịgbado ọkụ daa. Maka ọtụtụ ịgbado ọkụ, nchekwa N2 gas kacha mma. Ntụ eletrik bụkwa nsogbu.
6. Na-ekpu ọlaọcha
Usoro nrịba ọlaọcha dị n'etiti mkpuchi organic na nickel / gold plating enweghị electroless, usoro a dịtụ mfe na ngwa ngwa; Ọbụna mgbe ekpughere okpomọkụ, iru mmiri na mmetọ, ọlaọcha ka na-enwe ike ịnọgide na-enwe ezi weldability, ma ọ ga-efunahụ ya. Ịkwasa ọla ọcha enweghị ezigbo ike anụ ahụ nke nickel plating/plating gold na-enweghị electroless n'ihi na ọ dịghị nickel n'okpuru oyi akwa ọlaọcha.
Uru: Usoro dị mfe, dabara adaba maka ịgbado ọkụ na-enweghị ndu, SMT. Elu dị larịị, ọnụ ala dị ala, dabara adaba maka ahịrị dị mma.
Ihe ọghọm: Ihe nchekwa dị elu chọrọ, dị mfe imetọ. Ike ịgbado ọkụ na-enwekarị nsogbu (nsogbu micro-cavity). Ọ dị mfe ịnweta ihe omume elektrọnịkị na ihe omume Javani na-ata ọla kọpa n'okpuru ihe nkiri ịgbado ọkụ. Ntụ eletrik bụkwa nsogbu
7, nickel palladium kemịkalụ
E jiri ya tụnyere mmiri ozuzo nke ọla edo, enwere akwa palladium dị n'etiti nickel na ọla edo, na palladium nwere ike igbochi ihe nrụrụaka nke mmeghachi omume nnọchi anya kpatara wee mee nkwadebe zuru oke maka ọdịda ọla edo. A na-ekpuchi ọla edo na palladium, na-enye ihu kọntaktị dị mma.
Uru: Kwesịrị ekwesị maka ịgbado ọkụ na-enweghị ndu. Elu dị larịị, dabara maka SMT. Site oghere nwekwara ike ịbụ nickel gold. Ogologo oge nchekwa, ọnọdụ nchekwa adịghị njọ. Kwesịrị ekwesị maka nyocha eletrik. Kwesịrị ekwesị maka imewe kọntaktị mgbanwe. Kwesịrị ekwesị maka eriri waya aluminom, dabara adaba maka nnukwu efere, nguzogide siri ike na mwakpo gburugburu ebe obibi.
8. Electroplating ike gold
Iji meziwanye nguzogide iyi nke ngwaahịa ahụ, mụbaa ọnụ ọgụgụ ntinye na mwepụ na electroplating ọla edo siri ike.
PCB n'elu ọgwụgwọ usoro mgbanwe na-adịghị nnọọ nnukwu, o yiri ka a dịtụ anya ihe, ma e kwesịrị ịrịba ama na ogologo oge nwayọọ mgbanwe ga-eduga ná nnukwu mgbanwe. N'ihe banyere ịba ụba oku maka nchekwa gburugburu ebe obibi, usoro ọgwụgwọ elu nke PCB ga-agbanwe nke ukwuu n'ọdịnihu.
Oge nzipu: Jul-05-2023
