1. I-SMT Patch Processing Factory yakha imigomo yekhwalithi
Isiqeshana se-SMT sidinga ibhodi lesifunda eliphrintiwe ngokuphrinta unamathisele oshiselwe kanye nezingxenye zesitikha, futhi ekugcineni izinga lokufaneleka lebhodi lomhlangano ongaphezulu eliphuma esithandweni sokushisela lifinyelela noma lisondele ku-100%. Usuku lwe-Zero-defective re-welding, futhi ludinga wonke amalunga e-solder ukuze afinyelele amandla athile omshini.
Imikhiqizo enjalo kuphela engafinyelela izinga eliphezulu nokuthembeka okuphezulu.
Umgomo wekhwalithi uyalinganiswa. Njengamanje, okungcono kakhulu okunikezwa ngamazwe ngamazwe, izinga lokukhubazeka le-SMT lingalawulwa libe ngaphansi kokulingana no-10ppm (okungukuthi 10×106), okuwumgomo olandelwa yisikhungo ngasinye sokucubungula i-SMT.
Ngokuvamile, imigomo yakamuva, imigomo yesikhathi esimaphakathi, kanye nemigomo yesikhathi eside ingakhiwa ngokuya nobunzima bokucubungula imikhiqizo, izimo zemishini kanye namazinga enqubo yenkampani.
2. Indlela yokucubungula
① Lungiselela amadokhumenti ajwayelekile ebhizinisi, okuhlanganisa ukucaciswa kwebhizinisi le-DFM, ubuchwepheshe obujwayelekile, amazinga okuhlola, amasistimu okubuyekeza kanye nokubuyekeza.
② Ngokuphathwa okuhlelekile kanye nokugada nokulawula okuqhubekayo, izinga eliphezulu lemikhiqizo ye-SMT liyafinyelelwa, namandla okukhiqiza e-SMT nokusebenza kahle kuyathuthukiswa.
③ Sebenzisa lonke uhlelo lokulawula. Idizayini Yomkhiqizo We-SMT Ukulawula Ukuthenga Okukodwa Inqubo Yokukhiqiza Okukodwa Ukuhlolwa Kwekhwalithi Okukodwa Ukuphathwa Kwefayela Le-Drip
Ukuvikelwa komkhiqizo insizakalo eyodwa ihlinzeka ngokuhlaziywa kwedatha yokuqeqeshwa kwesisebenzi esisodwa.
Ukwakhiwa komkhiqizo we-SMT kanye nokulawulwa kokuthengwa kwempahla ngeke kwethulwe namuhla.
Okuqukethwe kwenqubo yokukhiqiza kwethulwa ngezansi.
3. Ukulawulwa kwenqubo yokukhiqiza
Inqubo yokukhiqiza ithinta ngokuqondile ikhwalithi yomkhiqizo, ngakho-ke kufanele ilawulwe yizo zonke izici ezifana nemingcele yenqubo, abasebenzi, ukusethwa ngakunye, izinto zokwakha, エ, izindlela zokuqapha nokuhlola, kanye nekhwalithi yezemvelo, ukuze ibe ngaphansi kokulawula.
Izimo zokulawula zimi kanje:
① Dizayina umdwebo wohlelo, ukuhlanganisa, amasampula, izidingo zokupakisha, njll.
② Dala amadokhumenti enqubo yomkhiqizo noma amabhuku eziqondiso zokusebenza, njengamakhadi enqubo, imininingwane yokusebenza, amabhuku okuhlola nezinkombandlela zokuhlola.
③ Izinto zokukhiqiza, amatshe okusebenzela, ikhadi, isikhunta, i-eksisi, njll. zihlala zifanelekile futhi zisebenza ngempumelelo.
④ Lungiselela futhi usebenzise ukugada okufanelekile nokulinganisa amadivayisi ukuze ulawule lezi zici ngaphakathi kobubanzi obucacisiwe noma obuvunyelwe.
⑤ Kukhona indawo yokulawula ikhwalithi ecacile. Izinqubo ezibalulekile ze-SMT ukuphrinta kokunamathisela kwe-welding, i-patch, i-re-welding kanye nokulawula ukushisa kwesithando somlilo we-wave.
Izidingo zamaphoyinti okulawula ikhwalithi (amaphuzu okulawula ikhwalithi) yilezi: ilogo yamaphuzu okulawula ikhwalithi ngaleso sikhathi, amafayela wephoyinti lokulawula ikhwalithi elimisiwe, idatha yokulawula
Irekhodi lilungile, lifike ngesikhathi, futhi liyamsula, hlaziya idatha yokulawula, futhi uhlole njalo i-PDCA kanye nokuhlolwa okulandelekayo.
Emkhiqizweni we-SMT, ukuphathwa okungaguquki kuzophathwa ngokushisela, i-patch glue, nokulahlekelwa kwengxenye njengokunye kokuqukethwe kokulawula okuqukethwe kwenqubo yase-Guanjian.
Icala
Ukuphathwa Kokuphathwa Kwekhwalithi Nokulawulwa Kwemboni Yezogesi
1. Ngenisa futhi ulawule amamodeli amasha
1. Hlela ukubizwa kwangaphambi kokukhiqizwa kwemihlangano yangaphambi kokukhiqiza efana nomnyango wokukhiqiza, umnyango wekhwalithi, inqubo kanye neminye iminyango ehlobene, ikakhulukazi ichaza inqubo yokukhiqiza yohlobo lwemishini yokukhiqiza kanye nekhwalithi yekhwalithi yesiteshi ngasinye;
2. Ngesikhathi senqubo yokukhiqiza noma abasebenzi bonjiniyela bahlela inqubo yokukhiqiza isilingo somugqa, iminyango kufanele ibe nesibopho ngonjiniyela (izinqubo) ukuze balandelele ukuze babhekane nokungahambi kahle ohlelweni lokukhiqiza isilingo kanye nerekhodi;
3. UMnyango Wekhwalithi kufanele wenze uhlobo lwezingxenye eziphathwayo kanye nokuhlola okuhlukahlukene kokusebenza nokusebenza ohlotsheni lwemishini yokuhlola, futhi ugcwalise umbiko wesilingo ohambisanayo.
2. Ukulawulwa kwe-ESD
1. Izidingo zendawo yokucubungula: indawo yokugcina impahla, izingxenye, kanye namaworkshops angemuva kokushiselwa ahlangabezana nezidingo zokulawula ze-ESD, ukubeka izinto ezilwa ne-static phansi, inkundla yokucubungula iyabekwa, futhi i-impedance yangaphezulu ingu-104-1011Ω, kanye nebhande le-electrostatic grounding. (1MΩ ± 10%) ixhunyiwe;
2. Izidingo zabasebenzi: Ukugqoka izingubo ezingashintshi, izicathulo, nezigqoko kufanele kugqokwe endaweni yokusebenzela. Uma uthintana nomkhiqizo, udinga ukugqoka indandatho yezintambo ezimile;
3. Sebenzisa izikhwama ezinamagwebu namabhamuza omoya kumashalofu e-rotor, ukupakisha, namabhamuza omoya, adinga ukuhlangabezana nezidingo ze-ESD. I-impedance yobuso ingu-<1010Ω;
4. Uhlaka lwe-turntable ludinga iketango langaphandle ukuze kuzuzwe isisekelo;
5. I-voltage yokuvuza kwempahla ingu-<0.5V, ukuthikamezeka komhlabathi kungu-<6Ω, kanti i-solder iron impedance ingu-<20Ω. Idivayisi idinga ukuhlola umugqa ophansi ozimele.
3. Ukulawulwa kwe-MSD
1. BGA.IC. Izinto zokupakisha zezinyawo ze-tube kulula ukuhlupheka ngaphansi kwezimo zokupakisha ezingezona i-vacuum (nitrogen). Uma i-SMT ibuya, amanzi ayafudumala futhi ayashintshashintsha. Ukushisela akuvamile.
2. Ukucaciswa kokulawula kwe-BGA
(1) I-BGA, engakhiphi amaphakheji evacuum, kufanele igcinwe endaweni enezinga lokushisa elingaphansi kuka-30 ° C kanye nomswakama ohlobene ongaphansi kuka-70%. Isikhathi sokusebenzisa unyaka owodwa;
(2) I-BGA ekhishwe ku-vacuum emaphaketheni kufanele ikhombise isikhathi sokuvala. I-BGA engakethulwanga igcinwa kukhabethe elivikela umswakama.
(3) Uma i-BGA engapakishiwe ingatholakali ukuthi isetshenziswe noma ibhalansi, kufanele igcinwe ebhokisini elifaka umswakama (isimo ≤25 ° C, 65% RH) Uma i-BGA yendawo yokugcina impahla ibhakwa ngu indawo yokugcina impahla enkulu, inqolobane enkulu iyashintshwa ukuze isetshenziswe ukuze isetshenziswe Isitoreji sezindlela zokupakisha i-vacuum;
(4) Labo abeqa isikhathi sokugcina kufanele babhakwe ku-125 ° C/24HRS. Labo abangakwazi ukubhaka ku-125 ° C, bese babhaka ku-80 ° C/48HRS (uma kubhakwa izikhathi eziningi ngo-96HRS) bangasetshenziswa ku-inthanethi;
(5) Uma izingxenye zinezincazelo ezikhethekile zokubhaka, zizofakwa ku-SOP.
3. Umjikelezo wesitoreji se-PCB> izinyanga ezi-3, i-120 ° C 2H-4H isetshenziswa.
Okwesine, ukucaciswa kokulawula kwe-PCB
1. Ukuvalwa kwe-PCB nokugcinwa
(1) Ibhodi le-PCB ibhodi lokuvala uphawu oluyimfihlo lokukhiqiza usuku lokukhiqiza lungasetshenziswa ngqo phakathi nezinyanga ezi-2;
(2) Usuku lokukhiqiza ibhodi le-PCB luphakathi kwezinyanga ezi-2, futhi usuku lokudilizwa kufanele limakwe ngemva kokubekwa uphawu;
(3) Usuku lokukhiqiza ibhodi le-PCB luphakathi kwezinyanga ezi-2, futhi kufanele lusetshenziselwe ukusetshenziswa phakathi kwezinsuku ezi-5 ngemva kokudilizwa.
2. PCB ukubhaka
(1) Labo abavala i-PCB phakathi nezinyanga ezi-2 zosuku lokukhiqiza izinsuku ezingaphezu kwezi-5, sicela ubhake ku-120 ± 5 ° C ihora elingu-1;
(2) Uma i-PCB idlula izinyanga ezi-2 idlula usuku lokukhiqiza, sicela ubhake ku-120 ± 5 ° C ihora elingu-1 ngaphambi kokwethulwa;
(3) Uma i-PCB idlula izinyanga ezi-2 kuye kweziyi-6 zosuku lokukhiqiza, sicela ubhake ku-120 ± 5 ° C amahora angu-2 ngaphambi kokungena ku-inthanethi;
(4) Uma i-PCB idlula izinyanga eziyisi-6 ukuya onyakeni ongu-1, sicela ubhake ku-120 ± 5 ° C amahora ama-4 ngaphambi kokwethulwa;
(5) I-PCB ebhakiwe kufanele isetshenziswe phakathi kwezinsuku ezi-5, futhi kuthatha ihora elingu-1 ukubhakwa ihora elingu-1 ngaphambi kokuba isetshenziswe.
(6) Uma i-PCB yeqa usuku lokukhiqiza unyaka ongu-1, sicela ubhake ku-120 ± 5 ° C amahora angu-4 ngaphambi kokwethulwa, bese uthumela ifekthri ye-PCB ukuthi ifafaze kabusha amathini ukuze abe ku-inthanethi.
3. Isikhathi sokugcina se-IC vacuum seal package:
1. Sicela unake usuku lokuvalwa kwebhokisi ngalinye lokupakishwa kwe-vacuum;
2. Isikhathi sokugcina: izinyanga ezingu-12, izimo zendawo yokugcina izinto: ekushiseni
3. Hlola ikhadi lomswakamo: inani lokubonisa kufanele libe ngaphansi kuka-20%(blue), njengokuthi> 30%(bomvu), okubonisa ukuthi i-IC imunce umswakama;
4. Ingxenye ye-IC ngemva kophawu ayisetshenziswa phakathi kwamahora angu-48: uma ingasetshenziswa, ingxenye ye-IC kufanele ibhakwe futhi lapho kwethulwa ukwethulwa kwesibili ukuze kususwe inkinga ye-hygroscopic yengxenye ye-IC:
(1) Izinto zokupakisha ezinezinga lokushisa eliphezulu, 125 ° C (± 5 ° C), amahora angu-24;
(2) Ungamelani nokushisa okuphezulu kwezinto zokupakisha, 40 ° C (± 3 ° C), amahora angu-192;
Uma ungayisebenzisi, udinga ukuyibuyisela ebhokisini elomile ukuze uyigcine.
5. Ukulawula umbiko
1. Ngenqubo, ukuhlola, ukunakekelwa, ukubika kokubika, okuqukethwe kombiko, nokuqukethwe kombiko kufaka phakathi (inombolo yomkhiqizo, izinkinga ezingezinhle, izikhathi, inani, izinga elibi, ukuhlaziya imbangela, njll.)
2. Phakathi nenqubo yokukhiqiza (yokuhlola), umnyango wekhwalithi udinga ukuthola izizathu zokwenza ngcono nokuhlaziya lapho umkhiqizo uphezulu njengo-3%.
3. Ngokuvumelanayo, inkampani kufanele icubungule izibalo, ukuhlola, kanye nemibiko yokulungisa ukuze ilungise ifomu lombiko wanyanga zonke ukuze ithumele umbiko wanyanga zonke ngekhwalithi nenqubo yenkampani yethu.
Isithupha, ukuphrinta nokunamathisela ithini nokulawula
1. Ukunamathisela okuyishumi kufanele kugcinwe ku-2-10 ° C. Isetshenziswa ngokuhambisana nemigomo ye-preliminary ethuthukisiwe yokuqala, futhi ukulawulwa kwamathegi kuyasetshenziswa. I-tinnigo yokunamathisela ayisuswanga ekamelweni lokushisa, futhi isikhathi sokufaka imali yesikhashana akumele sidlule amahora angu-48. Yibuyisele esiqandisini ngesikhathi esiqandisini. Ukunamathisela kwe-Kaifeng kudinga ukusetshenziswa ku-24 encane. Uma ingasetshenziswanga, sicela uyibuyisele esiqandisini kusenesikhathi ukuze uyigcine futhi wenze irekhodi.
2. Umshini wokunyathelisa wokunamathisela kathini ozenzakalelayo ngokugcwele udinga ukuqoqa ukunamathisela kwethini nhlangothi zombili ze-spatula njalo ngemizuzu engu-20, bese wengeza ukunamathisela kwethini okusha njalo ngamahora angu-2-4;
3. Ingxenye yokuqala yophawu lukasilika wokukhiqiza ithatha amaphuzu angu-9 ukukala ukujiya kwethayela elinamathiselwe, ukujiya kogqinsi lukathayela: umkhawulo ongaphezulu, ukushuba kwemeshi yensimbi+ugqinsi lwemeshi yensimbi*40%, umkhawulo ophansi, ukujiya kwe-mesh yensimbi+ugqinsi lwe-mesh yensimbi*20%. Uma ukusetshenziswa kwethuluzi lokwelapha lokuphrinta kusetshenziselwa i-PCB kanye ne-curetic ehambisanayo, kulula ukuqinisekisa ukuthi ingabe ukwelashwa kubangelwa ukwanela; idatha yokushisa yokuhlola i-welding test isithando somlilo ibuyiselwa, futhi iqinisekisiwe okungenani kanye ngosuku. I-Tinhou isebenzisa isilawuli se-SPI futhi idinga ukulinganiswa njalo ngo-2H. Umbiko wokuhlola ukubukeka ngemva kwesithando somlilo, osakazwa kanye njalo ngemva kwamahora angu-2, futhi udlulisele idatha yokulinganisa enqubweni yenkampani yethu;
4. Ukuphrinta okungalungile kokunamathisela kukathini, sebenzisa indwangu engenalo uthuli, hlanza i-PCB surface tin paste, futhi usebenzise isibhamu somoya ukuhlanza indawo ukuze ushiye impushana yethini;
5. Ngaphambi kwengxenye, ukuzihlola ngokwakho kwe-tin paste kuchemile kanye nethiphu ye-tin. Uma okuphrintiwe kuphrintiwe, kuyadingeka ukuhlaziya imbangela engavamile ngesikhathi.
6. Ukulawula okubonakalayo
1. Ukuqinisekiswa kokubalulekile: Hlola i-BGA ngaphambi kokwethulwa, ukuthi i-IC iyiphakheji ye-vacuum. Uma ingavulwanga ephaketheni levacuum, sicela uhlole ikhadi lenkomba yokuswakama futhi uhlole ukuthi liwumswakama yini.
(1) Sicela uhlole indawo lapho impahla ikumpahla, uhlole impahla engalungile kakhulu, futhi uyibhalise kahle;
(2) Ukubeka izidingo zohlelo: Naka ukunemba kwesichibi;
(3) Ukuthi ukuzihlola kuchemile ngemuva kwengxenye; uma kukhona i-touchpad, idinga ukuqaliswa kabusha;
(4) Ngokuvumelana ne-SMT SMT IPQC njalo emahoreni ama-2, udinga ukuthatha izingcezu ezingu-5-10 ku-DIP ukushisela ngokweqile, wenze ukuhlolwa komsebenzi we-ICT (FCT). Ngemva kokuhlola KULUNGILE, udinga ukukumaka ku-PCBA.
Okuyisikhombisa, ukulawula nokulawula ukubuyiselwa kwemali
1. Uma u-welding welding, setha izinga lokushisa lomlilo ngokusekelwe engxenyeni ye-electronic esiphezulu, bese ukhetha ibhodi lokulinganisa izinga lokushisa lomkhiqizo ohambisanayo ukuhlola izinga lokushisa lomlilo. Ijika lokushisa lesithando somlilo elingenisiwe lisetshenziselwa ukuhlangabezana nokuthi izidingo zokushisela zokunamathisela ithini elingenamthofu ziyahlangatshezwa yini;
2. Sebenzisa izinga lokushisa lomlilo elingenamthofu, ukulawula kwesigaba ngasinye kungokulandelayo, indawo yokufudumeza nendawo yokupholisa emazingeni okushisa angaguquki okushisa isikhathi sokuncibilika (217 ° C) ngaphezu kuka-220 noma ngaphezulu isikhathi esingu-1 ℃ ～ 3 ℃ /SEC -1 ℃ ～ -4 ℃/SEC 150℃ 60 ~ 120SEC 30 ～ 60SEC 30 ～ 60SEC;
3. Isikhawu somkhiqizo singaphezu kuka-10cm ukugwema ukushisisa okungalingani, qondisa kuze kufike ukushisela okubonakalayo;
4. Ungasebenzisi ikhadibhodi ukubeka i-PCB ukugwema ukungqubuzana. Sebenzisa ukudluliswa kwamasonto onke noma igwebu le-anti-static.
8. Ukubukeka okubonakalayo kanye nokuhlolwa kombono
1. I-BGA ithatha amahora amabili ukuthatha i-X-ray kanye njalo, hlola izinga lokushisela, futhi uhlole ukuthi ingabe ezinye izingxenye zichemile, i-Shaoxin, amagwebu nokunye ukushisela okungekuhle. Ukuvela ngokuqhubekayo ku-2PCS ukwazisa ukulungiswa kochwepheshe;
2.BOT, TOP kufanele ihlolwe ikhwalithi yokuthola i-AOI;
3. Hlola imikhiqizo emibi, sebenzisa amalebula amabi ukumaka izindawo ezimbi, futhi uwabeke emikhiqizweni emibi. Isimo sesayithi sihlukaniswa ngokusobala;
4. Izidingo zesivuno zezingxenye ze-SMT zingaphezu kwama-98%. Kunezibalo zombiko ezeqa izinga futhi zidinga ukuvula ukuhlaziya okukodwa okungajwayelekile futhi kuthuthukiswe, futhi iyaqhubeka nokwenza ngcono ukulungiswa kokungabi bikho ngcono.
Isishiyagalolunye, i-back welding
1. Izinga lokushisa lethayela elingenamthofu lilawulwa ku-255-265 ° C, futhi inani elincane lokushisa elihlangene le-solder ebhodini le-PCB lingu-235 ° C.
2. Izidingo eziyisisekelo zezilungiselelo zokushisela igagasi:
a. Isikhathi sokucwiliswa kwethini yilesi: Izilawuli ze-Peak 1 kusekhondi elingu-0.3 kuye ku-1, kanti inani eliphakeme elingu-2 lilawula imizuzwana emi-2 kuye kwemi-3;
b. Isivinini sokudlulisa sithi: 0.8 ～ 1.5 amamitha/ngomzuzu;
c. Thumela i-angle yokuthambekela 4-6 degrees;
d. Ukucindezela kwe-spray ye-ejenti eshiselwe yi-2-3PSI;
e. Ukucindezela kwe-valve yenaliti kungu-2-4PSI.
3. I-plug-in material ingaphezu kwe-the-peak welding. Umkhiqizo udinga ukwenziwa futhi usebenzise igwebu ukuhlukanisa ibhodi ebhodini ukuze ugweme ukungqubuzana nokugubha izimbali.
Ishumi, isivivinyo
1. Ukuhlolwa kwe-ICT, ukuhlola ukuhlukaniswa kwemikhiqizo ye-NG ne-OK, amabhodi okuhlola okuthi KULUNGILE adinga ukunamathiselwa ilebula yokuhlola ye-ICT futhi ahlukaniswe negwebu;
2. Ukuhlolwa kwe-FCT, ukuhlola ukuhlukaniswa kwemikhiqizo ye-NG ne-OK, hlola ibhodi le-OK lidinga ukunamathiselwa kulebula yokuhlola ye-FCT futhi ihlukaniswe negwebu. Imibiko yokuhlola idinga ukwenziwa. Inombolo yomkhiqizo embikweni kufanele ihambisane nenombolo ye-serial ebhodini le-PCB. Sicela uyithumele kumkhiqizo we-NG futhi wenze umsebenzi omuhle.
Ishumi nanye, ukupakishwa
1. Ukusebenza kwenqubo, sebenzisa ukudluliswa kwamasonto onke noma igwebu eliwugqinsi le-anti-static, i-PCBA ayikwazi ukupakishwa, gwema ukungqubuzana, nokucindezela okuphezulu;
2. Ngaphezulu kokuthunyelwa kwe-PCBA, sebenzisa i-anti-static bubble bag packaging (usayizi wesikhwama sebhamuza esimile kufanele uhambisane), bese upakishwa ngegwebu ukuvimbela amandla angaphandle ekunciphiseni isigcinalwazi. Ukupakisha, ukuthunyelwa ngamabhokisi enjoloba amile, ukwengeza ukwahlukanisa phakathi komkhiqizo;
3. Amabhokisi enjoloba ahlanganiswe ku-PCBA, ingaphakathi lebhokisi lenjoloba lihlanzekile, ibhokisi langaphandle limakwe ngokucacile, kuhlanganise nokuqukethwe: umkhiqizi wokucubungula, inombolo ye-oda lemiyalelo, igama lomkhiqizo, inani, usuku lokulethwa.
12. Ukuthumela ngemikhumbi
1. Lapho kuthunyelwa, umbiko wokuhlolwa we-FCT kufanele unamathiselwe, umbiko omubi wokunakekelwa komkhiqizo, kanye nombiko wokuhlolwa kokuthunyelwa ubalulekile.
Isikhathi sokuthumela: Jun-13-2023
