1. SMT Patch Processing Factory tsim cov hom phiaj zoo
SMT thaj yuav tsum tau luam tawm Circuit Board los ntawm kev luam ntawv welded muab tshuaj txhuam thiab cov nplaum nplaum, thiab thaum kawg qhov tsim nyog tus nqi ntawm lub rooj sib txoos saum npoo tawm ntawm lub re-welding rauv mus txog lossis ze rau 100%. Zero-defective re-welding hnub, thiab tseem yuav tsum tau tag nrho cov pob qij txha kom ua tiav ib qho kev siv zog.
Tsuas yog cov khoom zoo li no tuaj yeem ua tiav cov khoom zoo thiab kev ntseeg siab.
Lub hom phiaj zoo yog ntsuas. Tam sim no, qhov zoo tshaj plaws thoob ntiaj teb muab thoob ntiaj teb, qhov tsis xws luag ntawm SMT tuaj yeem tswj tau tsawg dua qhov sib npaug ntawm 10ppm (piv txwv li 10 × 106), uas yog lub hom phiaj nrhiav los ntawm txhua qhov kev ua haujlwm SMT.
Feem ntau, cov hom phiaj tsis ntev los no, lub hom phiaj nruab nrab ntawm lub sijhawm, thiab cov hom phiaj ntev tuaj yeem tsim tau raws li qhov nyuaj ntawm kev ua cov khoom, cov khoom siv thiab cov txheej txheem ntawm lub tuam txhab.
2. txheej txheem txheej txheem
① Npaj cov ntaub ntawv txheem ntawm kev lag luam, suav nrog DFM kev lag luam tshwj xeeb, kev siv tshuab dav dav, cov qauv tshuaj xyuas, tshuaj xyuas thiab tshuaj xyuas cov tshuab.
② Los ntawm kev tswj xyuas thiab kev soj ntsuam tas li thiab kev tswj xyuas, qhov ua tau zoo ntawm SMT cov khoom tiav, thiab SMT muaj peev xwm ntau lawm thiab kev ua haujlwm tau zoo dua qub.
③ Siv tag nrho cov txheej txheem tswj. SMT Cov Khoom Tsim Ib qho Kev Tswj Xyuas Kev Lag Luam Ib Txheej Txheem Ntau Lawm Ib Kev Tshuaj Xyuas Zoo Ib Qhov Kev Tswj Xyuas Cov Ntaub Ntawv
Kev tiv thaiv khoom ib qho kev pabcuam muab cov ntaub ntawv txheeb xyuas ntawm ib tus neeg ua haujlwm kev cob qhia.
SMT cov khoom tsim thiab tswj kev yuav khoom yuav tsis qhia hnub no.
Cov ntsiab lus ntawm cov txheej txheem ntau lawm yog qhia hauv qab no.
3. Kev tswj cov txheej txheem ntau lawm
Cov txheej txheem tsim khoom ncaj qha cuam tshuam rau qhov zoo ntawm cov khoom, yog li nws yuav tsum tau tswj hwm los ntawm txhua yam xws li cov txheej txheem tsis ua haujlwm, cov neeg ua haujlwm, teeb tsa txhua tus, cov ntaub ntawv, エ, kev tshuaj xyuas thiab kev sim, thiab ib puag ncig zoo, kom nws tswj tau.
Cov kev tswj xyuas yog raws li nram no:
① Tsim schematic daim duab, sib dhos, kuaj, ntim khoom, thiab lwm yam.
② Tsim cov ntaub ntawv txheej txheem khoom lossis phau ntawv qhia kev ua haujlwm, xws li daim npav txheej txheem, kev ua haujlwm tshwj xeeb, tshuaj xyuas thiab phau ntawv qhia kev xeem.
③ Cov khoom siv ntau lawm, pob zeb ua haujlwm, daim npav, pwm, axis, thiab lwm yam yog ib txwm tsim nyog thiab siv tau.
④ Txhim kho thiab siv cov cuab yeej soj ntsuam thiab ntsuas kom tsim nyog los tswj cov yam ntxwv no nyob rau hauv qhov tau teev tseg lossis tso cai.
⑤ Muaj qhov chaw tswj xyuas qhov zoo. Cov txheej txheem tseem ceeb ntawm SMT yog vuam paste luam ntawv, thaj, re-welding thiab yoj vuam rauv kub tswj
Cov kev xav tau rau cov ntsiab lus tswj tau zoo (cov ntsiab lus tswj tau zoo) yog: cov ntsiab lus tswj tau zoo logo ntawm qhov chaw, cov ntaub ntawv tswj tau zoo, tswj cov ntaub ntawv
Cov ntaub ntawv muaj tseeb, raws sijhawm, thiab tshem tawm nws, txheeb xyuas cov ntaub ntawv tswj hwm, thiab ntsuas PDCA tsis tu ncua thiab ua kom tau raws li qhov kev xeem
Hauv SMT ntau lawm, kev tswj xyuas ruaj khov yuav tsum tau tswj xyuas kev vuam, thaj ua kua nplaum, thiab cov khoom poob raws li ib qho ntawm cov ntsiab lus tswj cov ntsiab lus ntawm cov txheej txheem Guanjian
Case
Kev Tswj Xyuas Kev Tswj Xyuas Kev Tswj Xyuas Zoo thiab Kev Tswj Xyuas Ib Lub Hoobkas Hluav Taws Xob
1. Ntshuam thiab tswj cov qauv tshiab
1. Npaj pre-production convening ntawm pre-production lub rooj sib tham xws li ntau lawm department, zoo department, txheej txheem thiab lwm yam departments, mas piav qhia txog cov txheej txheem ntau lawm ntawm cov khoom siv thiab cov khoom zoo ntawm txhua qhov chaw nres tsheb;
2. Thaum lub sij hawm cov txheej txheem tsim khoom lossis cov neeg ua haujlwm engineering tau npaj cov txheej txheem kev sim tsim khoom, cov chaw haujlwm yuav tsum muaj lub luag haujlwm rau cov kws ua haujlwm (cov txheej txheem) ua raws li kev soj ntsuam txog qhov txawv txav ntawm cov txheej txheem tsim khoom thiab cov ntaub ntawv;
3. Lub Tsev Haujlwm Saib Xyuas Kev Ua Haujlwm Zoo yuav tsum ua cov hom khoom siv tes tuav thiab ntau yam kev ua haujlwm thiab kev ua haujlwm ntawm cov tshuab kuaj, thiab sau rau hauv daim ntawv tshaj tawm mus sib hais.
2. ESD tswj
1. Kev ua haujlwm hauv cheeb tsam: warehouse, qhov chaw, thiab kev cob qhia tom qab vuam ua tau raws li ESD tswj cov cai, tso cov ntaub ntawv tiv thaiv zoo li qub rau hauv av, cov txheej txheem ua haujlwm yog nteg, thiab qhov impedance nto yog 104-1011Ω, thiab electrostatic grounding buckle (1MΩ ± 10%) txuas nrog;
2. Cov neeg ua haujlwm xav tau: Hnav khaub ncaws tiv thaiv zoo li qub, khau, thiab kaus mom yuav tsum hnav hauv lub rooj cob qhia. Thaum hu rau cov khoom, koj yuav tsum hnav ib lub nplhaib zoo li qub;
3. Siv lub hnab npuas npuas thiab cua npuas rau rotor rhawv, ntim, thiab cua npuas, uas yuav tsum tau ua raws li cov kev cai ntawm ESD. Nto impedance yog <1010Ω;
4. Lub turntable thav duab yuav tsum muaj cov saw hlau sab nraud kom ua tiav hauv av;
5. Cov khoom siv hluav taws xob tawm hluav taws xob yog <0.5V, lub hauv paus impedance hauv av yog <6Ω, thiab cov hlau hlau impedance yog <20Ω. Cov cuab yeej yuav tsum tau ntsuas qhov kev ywj pheej hauv av.
3. MSD tswj
1. BGA.IC. Tube taw ntim khoom yog yooj yim rau kev txom nyem nyob rau hauv uas tsis yog-vacuum (nitrogen) ntim tej yam kev mob. Thaum SMT rov qab los, dej yog rhuab thiab volatilizes. Vuam yog txawv txav.
2. BGA tswj specification
(1) BGA, uas tsis yog unpacking lub tshuab nqus tsev ntim, yuav tsum tau muab cia rau hauv ib puag ncig nrog ib tug kub ntawm tsawg tshaj li 30 ° C thiab ib tug txheeb ze humidity ntawm tsawg tshaj li 70%. Lub sijhawm siv yog ib xyoos;
(2) BGA uas tau muab ntim rau hauv lub tshuab nqus tsev yuav tsum qhia lub sijhawm sib khi. Lub BGA uas tsis tau tso tawm yog khaws cia hauv lub txee tsis muaj dej noo.
(3) Yog tias BGA uas tsis tau ntim khoom tsis tuaj yeem siv lossis qhov sib npaug, nws yuav tsum tau muab khaws cia rau hauv lub thawv ntim dej noo (qhov xwm txheej ≤25 ° C, 65% RH) Yog tias BGA ntawm lub tsev khaws khoom loj yog ci los ntawm lub warehouse loj, lub warehouse loj yog hloov los hloov nws los hloov nws mus rau kev cia khoom ntawm lub tshuab nqus tsev packing txoj kev;
(4) Cov uas tshaj lub sijhawm cia yuav tsum tau ci ntawm 125 ° C / 24HRS. Cov uas tsis tuaj yeem ci ntawm 125 ° C, ces ci ntawm 80 ° C / 48HRS (yog tias nws ci ntau zaus 96HRS) tuaj yeem siv online;
(5) Yog tias cov khoom muaj qhov tshwj xeeb ci, lawv yuav suav nrog SOP.
3. PCB cia lub voj voog> 3 lub hlis, 120 ° C 2H-4H yog siv.
Plaub, PCB tswj specifications
1. PCB sealing thiab cia
(1) PCB pawg thawj coj saib tsis pub lwm tus paub kev tsim khoom hnub tuaj yeem siv ncaj qha hauv 2 lub hlis;
(2) PCB board tsim hnub yog nyob rau hauv 2 lub hlis, thiab hnub demolition yuav tsum tau cim tom qab lub sealing;
(3) PCB board manufacturing hnub yog nyob rau hauv 2 lub hlis, thiab nws yuav tsum tau siv nyob rau hauv 5 hnub tom qab demolition.
2. PCB ci
(1) Cov neeg uas kaw lub PCB hauv 2 lub hlis ntawm hnub tsim khoom rau ntau tshaj 5 hnub, thov ci ntawm 120 ± 5 ° C rau 1 teev;
(2) Yog tias PCB tshaj 2 lub hlis dhau hnub tsim khoom, thov ci ntawm 120 ± 5 ° C rau 1 teev ua ntej tso tawm;
(3) Yog tias PCB tshaj 2 mus rau 6 lub hlis ntawm hnub tsim khoom, thov ci ntawm 120 ± 5 ° C rau 2 teev ua ntej yuav mus online;
(4) Yog tias PCB tshaj 6 lub hlis mus rau 1 xyoos, thov ci ntawm 120 ± 5 ° C rau 4 teev ua ntej tso tawm;
(5) Lub PCB uas tau muab ci yuav tsum siv li ntawm 5 hnub, thiab nws yuav siv sij hawm 1 teev los ci rau 1 teev ua ntej nws yuav siv.
(6) Yog tias PCB tshaj li hnub tsim khoom rau 1 xyoos, thov ci ntawm 120 ± 5 ° C rau 4 teev ua ntej tso tawm, thiab tom qab ntawd xa lub Hoobkas PCB rov ua cov tshuaj pleev xim rau hauv online.
3. Lub sij hawm cia rau IC lub tshuab nqus tsev foob ntim:
1. Thov ua tib zoo saib rau hnub sib khi ntawm txhua lub thawv ntim khoom ntim;
2. Lub sij hawm cia: 12 lub hlis, qhov chaw cia ib puag ncig: ntawm qhov kub thiab txias
3. Tshawb xyuas daim npav cov av noo: cov nqi zaub yuav tsum tsawg dua 20% (xiav), xws li> 30% (liab), qhia tias IC tau nqus dej noo;
4. Cov khoom siv IC tom qab lub foob tsis siv nyob rau hauv 48 teev: yog tias nws tsis siv, IC tivthaiv yuav tsum tau ci dua thaum lub thib ob tso tawm kom tshem tawm cov teeb meem hygroscopic ntawm IC tivthaiv:
(1) Cov khoom ntim kub kub, 125 ° C (± 5 ° C), 24 teev;
(2) Tsis txhob tiv thaiv cov khoom ntim kub, 40 ° C (± 3 ° C), 192 teev;
Yog tias koj tsis siv nws, koj yuav tsum muab nws rov qab rau hauv lub thawv qhuav kom khaws nws.
5. Qhia tswj
1. Rau cov txheej txheem, kev ntsuam xyuas, kev saib xyuas, kev tshaj tawm, kev tshaj tawm cov ntsiab lus, thiab cov ntsiab lus ntawm daim ntawv tshaj tawm muaj xws li (serial tooj, cov teeb meem tsis zoo, lub sij hawm, qhov ntau, qhov tsis zoo, ua rau kev tsom xam, thiab lwm yam)
2. Thaum lub sij hawm tsim khoom (kuaj) cov txheej txheem, lub tuam txhab ua haujlwm zoo yuav tsum nrhiav cov laj thawj rau kev txhim kho thiab kev tshuaj xyuas thaum cov khoom lag luam siab li 3%.
3. Ua ke, lub tuam txhab yuav tsum tau txheeb xyuas cov txheej txheem, kev ntsuam xyuas, thiab cov ntaub ntawv saib xyuas los txheeb xyuas daim ntawv qhia txhua hli kom xa daim ntawv qhia txhua hli rau peb lub tuam txhab kev ua tau zoo thiab cov txheej txheem.
Rau, tin paste luam ntawv thiab tswj
1. Kaum muab tshuaj txhuam yuav tsum tau muab cia rau ntawm 2-10 ° C. Nws yog siv raws li cov hauv paus ntsiab lus ntawm kev ua ntej ua ntej, thiab kev tswj tag yog siv. Cov tshuaj tinnigo tsis raug tshem tawm ntawm chav tsev kub, thiab lub sijhawm tso nyiaj ib ntus yuav tsum tsis pub tshaj 48 teev. Muab nws rov qab rau hauv lub tub yees rau lub sijhawm rau lub tub yees. Kaifeng muab tshuaj txhuam yuav tsum siv 24 me me. Yog tias tsis siv, thov muab rov qab rau lub tub yees kom lub sijhawm khaws cia thiab ua cov ntaub ntawv.
2. Tsis siv neeg tin paste tshuab luam ntawv yuav tsum tau sau cov tin paste rau ntawm ob sab ntawm spatula txhua 20 feeb, thiab ntxiv cov tin paste tshiab txhua 2-4 teev;
3. Thawj feem ntawm cov khoom siv lo lo ntxhuav yuav siv sij hawm 9 lub ntsiab lus los ntsuas lub thickness ntawm cov tin paste, lub thickness ntawm cov tin thickness: lub siab txwv, lub thickness ntawm cov hlau mesh + lub thickness ntawm cov hlau mesh * 40%, Qhov qis dua, lub thickness ntawm steel mesh + lub thickness ntawm steel mesh * 20%. Yog tias kev siv cov cuab yeej kho mob luam tawm yog siv rau PCB thiab cov khoom siv kho kom zoo, nws yog qhov yooj yim kom paub meej tias qhov kev kho mob tshwm sim los ntawm kev ua kom txaus; cov ntaub ntawv rov qab vuam ntsuas qhov kub thiab txias tau xa rov qab, thiab nws tau lees paub tsawg kawg ib hnub ib zaug. Tinhou siv SPI tswj thiab yuav tsum ntsuas txhua 2H. Daim ntawv tshuaj ntsuam xyuas tom qab lub cub tawg, xa ib zaug txhua 2 teev, thiab xa cov ntaub ntawv ntsuas rau peb lub tuam txhab cov txheej txheem;
4. Kev luam ntawv tsis zoo ntawm cov tin paste, siv cov ntaub tsis muaj plua plav, ntxuav lub PCB nto tin paste, thiab siv rab phom cua los ntxuav qhov chaw kom seem cov hmoov nplej;
5. Ua ntej ib feem, kev tshuaj xyuas tus kheej ntawm cov tin paste yog biased thiab tin ntsis. Yog tias cov ntawv luam tawm, nws yog qhov tsim nyog los tshuaj xyuas qhov txawv txav hauv lub sijhawm.
6. Optical tswj
1. Cov ntaub ntawv pov thawj: Tshawb xyuas BGA ua ntej tso tawm, seb IC puas yog lub tshuab nqus tsev ntim khoom. Yog tias nws tsis tau qhib rau hauv lub tshuab nqus tsev ntim khoom, thov xyuas daim npav qhia cov av noo thiab xyuas seb nws puas yog noo noo.
(1) Thov xyuas qhov chaw thaum cov khoom nyob rau ntawm cov khoom, xyuas cov khoom tsis zoo tshaj plaws, thiab sau npe kom zoo;
(2) Muab cov kev cai yuav tsum tau ua: Ua tib zoo saib xyuas qhov tseeb ntawm thaj chaw;
(3) Seb qhov kev ntsuam xyuas tus kheej yog kev sib tw tom qab ib feem; yog tias muaj touchpad, nws yuav tsum tau rov pib dua;
(4) Ua raws li SMT SMT IPQC txhua 2 teev, koj yuav tsum nqa 5-10 daim rau DIP tshaj-welding, ua ICT (FCT) kev xeem ua haujlwm. Tom qab kuaj OK, koj yuav tsum kos nws ntawm PCBA.
Xya, refund tswj thiab tswj
1. Thaum overwing welding, teem lub cub tawg kub raws li qhov siab tshaj plaws hluav taws xob tivthaiv, thiab xaiv lub ntsuas kub ntsuas ntawm cov khoom siv los ntsuas qhov cub kub. Lub qhov cub hluav taws kub hloov pauv yog siv los ua kom tau raws li qhov xav tau ntawm cov khoom siv hlau tsis muaj hlau lead-free tin paste;
2. Siv lub tshuab hluav taws xob tsis muaj hlau lead, kev tswj hwm ntawm txhua ntu yog raws li hauv qab no, qhov cua sov nqes hav thiab qhov chaw txias txias ntawm qhov kub thiab txias ntawm qhov kub ntawm lub sijhawm melting point (217 ° C) siab tshaj 220 los yog ntau tshaj lub sij hawm 1 ℃ ~ 3 ℃ /SEC -1 ℃ ～ -4 ℃ / SEC 150 ℃ 60 ~ 120SEC 30 ～ 60SEC 30 ～ 60SEC;
3. Lub sijhawm khoom lag luam yog ntau tshaj 10cm kom tsis txhob muaj cua sov tsis sib xws, qhia txog kev siv vuam virtual;
4. Tsis txhob siv cov duab los qhia rau PCB kom tsis txhob muaj kev sib tsoo. Siv cov hloov pauv txhua lub limtiam lossis ua npuas dej los tiv thaiv zoo li qub.
8. Optical tsos thiab kev ntsuam xyuas pom
1. BGA yuav siv sij hawm ob teev los kuaj X-ray ib zaug, xyuas cov vuam zoo, thiab xyuas seb lwm cov khoom puas muaj kev ncaj ncees, Shaoxin, npuas thiab lwm yam vuam tsis zoo. Tsis tu ncua tshwm sim hauv 2PCS ceeb toom rau cov kws kho kev hloov kho;
2.BOT, TOP yuav tsum tau kuaj xyuas AOI nrhiav kom tau zoo;
3. Tshawb xyuas cov khoom tsis zoo, siv cov ntawv tsis zoo los cim cov haujlwm tsis zoo, thiab muab tso rau hauv cov khoom tsis zoo. Cov xwm txheej ntawm lub xaib tau pom meej meej;
4. Cov kev xav tau ntawm cov khoom SMT yog ntau tshaj 98%. Muaj cov ntaub ntawv txheeb cais uas tshaj tus qauv thiab yuav tsum tau qhib ib qho kev ntsuam xyuas txawv txav thiab txhim kho, thiab nws txuas ntxiv txhim kho kev kho kom zoo tsis muaj kev txhim kho.
Cuaj, rov qab vuam
1. Cov hlau lead-dawb tin rauv kub yog tswj ntawm 255-265 ° C, thiab qhov tsawg kawg nkaus tus nqi ntawm qhov sib koom ua ke kub ntawm PCB board yog 235 ° C.
2. Cov kev teeb tsa yooj yim rau yoj vuam:
a. Lub sij hawm rau soaking tin yog: Peak 1 tswj ntawm 0.3 mus rau 1 thib ob, thiab lub ncov 2 tswj 2 mus rau 3 vib nas this;
b. Kev sib kis ceev yog: 0.8 ~ 1.5 meters / feeb;
c. Xa lub inclination lub kaum sab xis 4-6 degrees;
d. Cov tshuaj tsuag siab ntawm tus neeg sawv cev welded yog 2-3PSI;
e. Lub siab ntawm rab koob valve yog 2-4PSI.
3. Cov khoom siv plug-in yog dhau-tus-peak vuam. Cov khoom lag luam yuav tsum tau ua thiab siv cov npuas dej cais tawm ntawm lub rooj tsavxwm kom tsis txhob muaj kev sib tsoo thiab rub cov paj.
Kaum, xeem
1. ICT xeem, kuaj kev sib cais ntawm NG thiab OK cov khoom, kuaj OK boards yuav tsum tau pasted nrog ICT xeem daim ntawv lo thiab cais los ntawm ua npuas ncauj;
2. FCT kuaj, kuaj kev sib cais ntawm NG thiab OK cov khoom, kuaj OK board yuav tsum tau txuas nrog FCT daim ntawv xeem thiab cais los ntawm npuas. Cov ntawv xeem yuav tsum tau ua. Tus lej xov tooj ntawm daim ntawv tshaj tawm yuav tsum raug coj mus rau tus lej xov tooj ntawm PCB pawg thawj coj saib. Thov xa mus rau NG khoom thiab ua haujlwm zoo.
Kaum ib, ntim
1. Cov txheej txheem kev ua haujlwm, siv kev hloov pauv txhua lub limtiam lossis los tiv thaiv-zoo li qub ua npuas ncauj, PCBA tsis tuaj yeem muab tso ua ke, tsis txhob sib tsoo, thiab sab saum toj siab;
2. Tshaj li PCBA cov khoom xa tuaj, siv lub hnab ntim khoom tiv thaiv zoo li qub (qhov loj ntawm lub hnab ntim npuas zoo li qub yuav tsum zoo ib yam), thiab tom qab ntawd ntim nrog cov npuas dej kom tiv thaiv sab nraud los ntawm kev txo qhov tsis zoo. Ntim, xa nrog cov thawv roj hmab zoo li qub, ntxiv cov khoom sib faib hauv nruab nrab ntawm cov khoom;
3. Lub thawv roj hmab tau muab tso rau hauv PCBA, sab hauv ntawm lub thawv roj hmab yog huv si, lub thawv sab nrauv yog cim kom meej, nrog rau cov ntsiab lus: cov chaw tsim khoom, kev qhia tus lej, cov khoom npe, kom muaj nuj nqis, hnub xa khoom.
12. Kev xa khoom
1. Thaum xa khoom, daim ntawv tshaj tawm kev xeem FCT yuav tsum tau txuas nrog, daim ntawv ceeb toom kev saib xyuas cov khoom tsis zoo, thiab daim ntawv tshaj tawm kev tshuaj xyuas cov khoom xa tuaj yog qhov tseem ceeb.
Post lub sij hawm: Jun-13-2023
