Cov txheej txheem sib dhos PCBA

Kev tshawb pom tiag tiag ntawm cov khoom sib hloov polarity, cov khoom uas ploj lawm, thiab qhov sib txawv. Qhov ceev lees paub yog ≤0.1s/khoom, thiab qhov tseeb yog >99.9%.

① Saib xyuas kev hnav ntawm cov ntsia hlau txhuas los ntawm cov sensors kev co (qhov tseeb kwv yees> 95%); ② Tsheb ciav hlau cov qauv raws li cov ntaub ntawv keeb kwm los muab 72 teev ua ntej ceeb toom ntawm lub neej nozzle tas sij hawm.

Lub siab yuav tsum yog ≤2 npaug ntawm qhov hnyav ntawm cov khoom, thiab qhov deformation ntawm cov hlau leads / solder pob ≤5% kom tiv thaiv kev puas tsuaj rau lub tshuab.

Cov roj nplua nyeem yuav tsum tsis muaj cov tshuaj lom xws li Pb, Hg, Cd, thiab cov ntsiab lus ntawm SVHC (Cov Tshuaj Uas Muaj Kev Txhawj Xeeb Heev) ≤0.1%.

① Muab cov khoom loj loj tso rau ntawm sab nthwv dej - soldering ua ntej (xws li cov connectors); ② Tom qab ntawd muab cov khoom me me tso rau ntawm sab reflow - soldering (xws li 01005) kom tsis txhob muaj cua sov thib ob cuam tshuam rau cov khoom me me.

① Rau ENIG, qhov tuab ntawm txheej nickel (5 - 8μm) yuav tsum tau tswj kom tsis txhob muaj cov ntaub dub; ② Rau OSP, qhov chaw yuav tsum tau ua tiav hauv 24 teev kom tsis txhob muaj tooj liab oxidation; ③ Rau HASL, qhov tiaj tiaj ntawm cov ntaub (≤0.05mm) yuav tsum tau sau tseg.

Cov nozzles siv ntau zaus (xws li BGA) yuav tsum tau ntxuav txhua 4 teev kom tsis txhob muaj kev txo qis ntawm lub zog adsorption los ntawm cov khoom seem solder.

Siv cov Feeders ntse (nrog lub cim xeeb ua haujlwm) los khaws cov kev pub mis ntawm cov khoom sib txawv ua ntej, thiab lub sijhawm hloov pauv tuaj yeem luv dua li 5 feeb.

Txhim kho kev faib cov khoom siv los ntawm cov software simulation txheej txheem (xws li Valor) kom ua qhov sib txawv ntawm cov haujlwm ntawm txhua lub taub hau tso ≤5%.

① Txais yuav cov qauv tsim modular (xws li cov taub hau ceev ceev uas yog lub luag haujlwm rau cov khoom me me, cov taub hau siab uas yog lub luag haujlwm rau BGA); ② Ua kom sib dhos cov kev txav mus los ntawm txhua lub taub hau tso los ntawm lub kaw lus tswj hwm hauv nruab nrab.

① Txais yuav cov qauv tsim modular (xws li cov taub hau ceev ceev uas yog lub luag haujlwm rau cov khoom me me, cov taub hau siab uas yog lub luag haujlwm rau BGA); ② Ua kom sib dhos cov kev txav mus los ntawm txhua lub taub hau tso los ntawm lub kaw lus tswj hwm hauv nruab nrab.

① Ua kom qhov kub ua ntej sov nce ntxiv 10 - 15 ℃; ② Ntev qhov kub siab tshaj plaws los ntawm 5 - 8 vib nas this; ③ Txo qhov txias kom txog ≤2 ℃ / s kom tiv thaiv kev ntxhov siab sab hauv ntawm lub rooj tsavxwm.

① Siv cov khoom noj ntse los txheeb xyuas cov hom khoom; ② Teeb tsa lub tais vibrating + lub zeem muag kom sib xws nrog cov khoom loj thiab cov khoom siv tape - thiab - reel.

Qhov ceev ntawm lub feeder (feem ntau ≤200 zaug / feeb) thiab qhov ua tau zoo ntawm kev hloov pauv PCB yog cov teeb meem tseem ceeb.

① Teeb tsa cov ntaub thaiv teeb pom kev zoo (lub sijhawm teb ≤20ms); ② Txwv tsis pub qhib lub qhov rooj tiv thaiv thaum cov khoom siv khiav (yuav tsum tau teeb tsa cov khoom siv sib txuas); ③ Cov neeg ua haujlwm yuav tsum hnav cov tsho ceeb toom ceeb toom.

① Siv cov tshuaj nplaum uas tsis muaj cov khib nyiab ntau thiab tsis huv (cov khoom muaj cov khoom flux ≤1.5%); ② Ntxuav nrog dej deionized tom qab muab tso rau (resistivity ≥18MΩ・cm).

Nws tuaj yeem hloov kho rau cov khoom sib txawv (los ntawm 01005 txog 50mm × 50mm), thiab qhov kev hloov pauv - dhau sijhawm raug txo kom txog li 1/3 ntawm cov khoom siv ib txwm muaj.

① Chav kawm laser yuav tsum ua tau raws li tus qauv Chav Kawm 1 (hwj chim ≤0.5mW); ② Lub plhaub khoom siv yuav tsum tau kaw kom tsis txhob muaj laser xau; ③ Cov neeg ua haujlwm hnav tsom iav tiv thaiv laser.

Qhov concentration ntawm cov hmoov av me me >5μm yuav tsum yog ≤3,520 daim/m³. Txwv tsis pub, cov khoom txawv teb chaws yuav ua rau muaj kev sib tsoo thaum lub sijhawm nqus cov khoom (kev txo qis ntawm 3–5%).

Qhov viscosity ntawm cov tshuaj nplaum solder (yuav tsum yog 80–120Pa·s) thiab thixotropy (slump ≤2mm) yuav tsum tau rov kuaj dua, thiab nws tsuas yog siv tau tom qab dhau qhov kev xeem.

① Tus nqi Cpk (yuav tsum yog ≥1.33); ② Qhov tseeb ntawm kev rov ua dua (3σ ≤ ± 0.02 hli); ③ Qhov sib txawv ntawm qhov tseeb zoo li qub thiab qhov tseeb dynamic (yuav tsum yog ≤10%).

① Tsim kom muaj ib qho kev tiv thaiv qhov yuam kev (xws li kev txheeb xyuas ob ntu); ② Cov txheej txheem tseem ceeb (xws li siab, kub) yuav tsum tau saib xyuas lub sijhawm tiag tiag thiab khaws cia rau 10 xyoo; ③ Thawj daim ntawm txhua qhov kev hloov pauv yuav tsum tau kuaj xyuas tag nrho.

① Txhim kho cov kev ntsuas pub mis (xws li qhov zaus ntawm kev co); ② Ntxuav cov nozzles thiab cov kav dej nqus tsev tas li; ③ Tsim kom muaj cov txheej txheem rov ua dua tshiab rau cov khoom tsis lees paub (xws li kev tshuaj xyuas cov khoom siv rov ua dua tshiab 0402).

① Ntshuam cov ntaub ntawv tsim PCB; ② Teem cov cai hloov pauv nozzle thiab cov txheej txheem khaws cov khoom; ③ Khiav cov algorithms simulation (xws li cov algorithms genetic) los xam txoj kev luv tshaj plaws thiab txo lub sijhawm mus ncig tsis ua haujlwm.

① Sau lub sijhawm tso, tus lej khoom siv, thiab lub sijhawm siv lub nozzle ntawm txhua PCB; ② Txuas tus lej pawg khoom nrog qhov chaw pub mov kom sai sai xauv pawg teeb meem.

① Tsim cov xwm txheej kev cob qhia VR (xws li kev ua piv txwv hloov lub nozzle, kev debugging feeder); ② Teeb tsa lub tshuab tawm tswv yim rau kev ua haujlwm tsis raug (xws li kev poob ntawm cov khoom virtual); ③ Sau cov ntaub ntawv ua haujlwm los ntsuas qhov ua tau zoo ntawm kev cob qhia.

Muab qhov tseem ceeb rau cov ntaub nplaum yas uas ua rau hluav taws xob hluav taws xob lossis cov tais hlau uas muaj cov hlau tiv thaiv. Yuav tsum tau kho cov khoom ntim kom tsis txhob muaj hluav taws xob ntau dhau ua ntej qhib.

① Ntxuav lub lens thiab lub teeb ci; ② Kho qhov nce ntawm lub koob yees duab thiab lub sijhawm raug; ③ Xyuas seb cov cim taw qhia puas tau oxidized lossis muaj kuab paug; ④ Hloov cov cim taw qhia nrog cov duab sib txawv (xws li hloov ntawm lub voj voog mus rau lub duab hla).

Cov tshuaj nplaum tsis muaj thixotropy lossis nyob ntev dhau tom qab luam ntawv (> 2 teev). Qhov kub ntawm lub chaw ua haujlwm yuav tsum tau tswj ntawm 23 ± 2 ℃, thiab cov av noo ntawm 50 ± 5% RH.

① Rau cov khoom loj (xws li QFP), qhov tseem ceeb tshaj plaws yog qhov tseeb (ceev ≤30mm/s); ② Rau cov khoom me me (xws li 0402), qhov ceev tuaj yeem nce mus txog 80 - 100mm/s, thiab qhov tseeb tuaj yeem txhim kho los ntawm kev them nyiaj pom.

Tsis txhob muab cov khoom tsis tau calibrated, tsis txhob siv cov nozzles uas hnav ntau dhau, thiab tsis txhob tsim cov PCBs yam tsis tau kuaj xyuas thawj zaug.

① Lub taub hau sab hauv ntawm lub nozzle raug thaiv (yuav tsum tau ntxuav nrog rab koob hlau 0.2 hli); ② Lub tshuab nqus tsev tsis ua haujlwm (qhov nqus tsev

Nws raug pom zoo kom sau cov yam ntxwv tseem ceeb (xws li qhov siab, qhov chaw hloov pauv) txhua 0.5 vib nas this. Kev ncua sijhawm ntawm cov ntaub ntawv ntau dua 1 vib nas this yuav ua rau tsis pom qhov tsis zoo.

Calibrate ib zaug tom qab fais fab - qhib txhua hnub, lossis tom qab tsim 50 PCBs, kom ntseeg tau tias qhov tseeb ntawm kev sib dhos ntawm cov khoom thiab cov ntaub qhwv yog ≤ ± 0.02 hli.

Yuav tsum tau muaj roj nplua nyeem txhua 200 teev ntawm kev ua haujlwm. Yog tsis muaj roj txaus yuav ua rau muaj kev ua yuam kev ntawm kev sib kis (xws li qhov sib txawv ntawm X/Y axis >0.03mm).

Xaiv peb lub cim taw qhia ntawm ntau qhov chaw sib txawv ntawm PCB, thiab kho qhov siab ntawm Z-axis ntawm lub nozzle raws li. Qhov yuam kev yuav tsum yog ≤ ± 0.005 hli.

① Cov ntsiab cai thiab kev sau cov khoom siv (xws li G - code, qhia - pendant programming); ② Kev ua kom zoo dua ntawm cov txheej txheem (xws li cov kab siab, qhov kub); ③ Kev kuaj mob qhov txhaum thiab kev saib xyuas tiv thaiv; ④ Kev siv cov cuab yeej zoo (xws li SPC, FMEA).

① Siv cov nozzles ceramic lossis cemented carbide (lub neej ntev dua 3 - 5 zaug); ② Tsim kom muaj cov txheej txheem kho dua tshiab ntawm lub nozzle (xws li laser - kho qhov chaw uas puas lawm).

① Ntxiv cov modules suav ntug (xws li PLC gateways); ② Siv OPC UA protocol los ua kom sib txuas lus ntawm cov khoom siv; ③ Tsim kom muaj lub chaw khaws cov ntaub ntawv los khaws cov ntaub ntawv tsim khoom tiag tiag.

Yuav tsum muaj lub tshuab tua hluav taws uas siv roj inert, thiab yuav tsum tswj tau qhov concentration ntawm cov pa oxygen hauv lub hoobkas kom nyob nruab nrab ntawm 18 - 21%.

Lub sijhawm ntawm kev luam ntawv mus rau qhov chaw yuav tsum yog ≤1 teev kom tsis txhob muaj cov tshuaj nplaum solder nqus cov dej noo thiab ua rau reflow soldering voids.

Cov hlau nplaum uas tsis muaj txhuas muaj qhov kub siab heev (kwv yees li 217 ℃), ua rau siv zog rov ua dua 15 - 20%. Kev siv zog tuaj yeem txo tau los ntawm kev ua kom qhov kub ntawm lub cub tawg zoo dua (xws li ua kom lub sijhawm tuav luv dua).

① Txheeb xyuas qhov kev xav ntawm qhov kev pab cuam ua ntej (txo lub sijhawm debugging ntawm qhov chaw los ntawm 50%); ② Ua qauv qhia txog qhov xwm txheej ua haujlwm hnyav los sim qhov ruaj khov ntawm cov khoom siv; ③ Qhia cov neeg ua haujlwm yam tsis siv cov khoom siv tiag tiag.

① Tseg ib txoj kab ntug ntawm ≥5mm rau kev clamping fixture; ② Qhov sib nrug ntawm cov khoom sib ze yuav tsum yog ≥3mm kom tsis txhob cuam tshuam thaum lub sijhawm tin - txau.

① Txhua pawg ntawm cov khoom yuav tsum muab daim ntawv teev cov khoom siv (BOM); ② Tus neeg teb xov tooj ID thiab lub sijhawm ua haujlwm yuav tsum tau sau tseg thaum lub sijhawm tso; ③ Cov pob qij txha solder yuav tsum tau kuaj xyuas 100% X - Ray thiab cov ntaub ntawv duab yuav tsum tau khaws cia.

Rau cov khoom ntawm 0402 thiab siab dua, tus nqi tsis lees txais yuav tsum yog ≤0.5%; rau cov khoom me me ntawm 0201 thiab qis dua, tus nqi tsis lees txais yuav tsum yog ≤1.5%.

Kev tshuaj xyuas tus kheej ntawm tus neeg teb xov tooj → Kev tshuaj xyuas tus thawj coj pab pawg → Kev kuaj xyuas cov qauv ntawm tus neeg soj ntsuam zoo. Kev tsim khoom ntau tsuas yog tso cai tom qab paub meej.

Yog tias lub kaum sab xis ntawm lub xov hlau tsis sib xws > 5° ces yuav ua rau cov hlau lead/cov pob solder thiab cov ntaub qhwv tsis sib xws, ua rau muaj kev pheej hmoo ntawm kev sib txuas lossis kev soldering cuav. Yuav tsum tau them thiab kho los ntawm cov software ntawm cov khoom siv.