Daloolka wadnaha ee loo maro daloolka waxaa sidoo kale loo yaqaan god. Si loo haqabtiro shuruudaha macaamiisha, guddiga wareega ee loo maro godku waa in lagu xiraa. Dhaqdhaqaaqyo badan kadib, howsha galka alumininium ee dhaqameed ayaa la beddelaa, iyo maaskaro dusha sare ee boodboodka ah ee boodboodka iyo maaskaro boodboodka ah ee guddiga iyo galka lagu buuxiyo ayaa lagu dhammeeyaa mesh cad. dalool. Wax soo saarka xasilloon iyo tayo la isku halleyn karo.
Via dalool wuxuu ciyaaraa doorka is dhexgalka iyo xadka safka. Horumarka warshadaha elektiroonigga ah ayaa sidoo kale kor u qaadaya horumarinta PCB, waxayna sidoo kale dhigeysaa shuruudaha sare ee ku saabsan nidaamka wax soo saarka Guddiga daabacan iyo Tilmaamaha Brat ee dusha sare. Iyada oo loo marayo tikniyoolajiyad god ah oo ay soo gasho, waana inay buuxisaa shuruudaha soo socda:
(1) Waxaa jira kaliya naxaas ah oo ku jirta godka dhexdooda, waxaana lagu xiri karaa maaskaro gacanta lagu xiri karaa ama aan lagu xirin;
(2) Waa inay jirtaa tin, oo ay ku jiraan god ku yaal god, oo leh shuruudo qaro weyn (4 michins), oo maaskaro maaskaro ah oo aan lahayn ma geli karto godka, oo sababa guluubka daloolka ee godka;
(3) In godadku waa inay lahaadaan solder maaskaro maaskaro ah oo godad ah, opaque, waana inaanu lahayn fargalyo dameero ah, guluusyo, iyo shuruudo faneed.
Iyada oo la wanaajinayo horumarinta alaabada elektiroonigga ah "iftiinka, dhuuban, gaagaaban, yar iyo yar", PCBs ayaa sidoo kale u horseeday cufnaanta sare iyo dhibaato aad u daran. Sidaa darteed, tiro badan oo ka mid ah PCB-yada SMT iyo BGA ayaa soo muuqday, macaamiisha waxay u baahan yihiin inay xiraan markay ku dhegaan qaybaha, badiyaa shan shaqo:
(1) Ka hortag wareegga gaagaaban ee ay sababaan TIN ka gudbaya qeybta hoose ee godka korkiisa markii PCB-ga la soo celiyo; Gaar ahaan markaan dul dhigno godka BGA Pad-ka BGA, waa inaan marka hore sameynaa godka godka ka dibna dahab-dahab ah si loo fududeeyo iibinta BGA.
(2) Ka fogow hawada hawada ee godadka;
(3) Ka dib dusha sare ee dusha sare ee warshadda elektiroonigga ah oo ah golaha qaybaha ayaa la dhammeeyaa, PCB waa in lagu nadiifiyaa si ay u cadaadiyaan mashiinka taban ee mashiinka baaritaanka si loo buuxiyo:
(4) looga hortago koollada dusha sare ee ku soo qulqulaya godka, taas oo keenaysa haynta been abuurka iyo saamaynta meelaynta;
(5) Ka hortag guntin daloolka ah inay soo baxaan inta lagu gudajiro muddadii hirar, taasoo keenta wareeg gaaban.
Xaqiijinta geedi socodka goynta goynta
Looxarka dusha sare ee dusha sare, gaar ahaan kuwa BGA iyo IC-ga, tuubooyinka godku waa inay ahaadaan kuwo siman, convex iyo convex iyo laga jaro 1mil, oo waa inaanay jirin qasacad casaan ah oo daloolka ah; The godka loo maro wuxuu qariyey kubadda jilicsan, si loo gaaro macaamiisha hanaanka ku xirida godadka lagu tilmaami karo mid kala duwan. Qulqulka hannaanka ayaa gaar ahaan waqti dheer isla markaana xakameynta howsha ayaa adag. Badanaa waxaa jira dhibaatooyin ay ka mid yihiin dhibicda saliida inta lagu gudajiro heerka hawada kulul iyo tijaabada saliida cagaaran ee caabbinta; Qarax saliid ah ka dib markii la daaweeyay. Hadda sida ku xusan xaaladaha soosaarka ee dhabta ah, geedi socodka kala duwan ee PCB ayaa lagu soo koobay, isbarbardhiga iyo sharraxaadda qaar ayaa lagu sameeyaa nidaamka iyo faa'iidooyinka iyo faa'iido darrooyinka:
Xusuusin: Mabda'a shaqo ee Heerka Hawada kulul ayaa ah in la isticmaalo hawo kulul si looga saaro xargaha xad-dhaafka ah ee dusha sare, iyo xargaha soo hadha ee dib u dhigista iyo meelaha baakadaha dusha sare ah, taas oo ah habka daaweynta dusha sare ee guddiga wareega ee daabacaadda.
1. Nidaamka xirashada ka dib heerka hawo kulul
Qulqulka geeddi-socodka ayaa ah: maaskaro dusha sare ee boodhka ah Nidaamka aan-xirin waxaa loo qaatay wax soo saarka. Ka dib Heerka Hawada kulul, xaashida aluminiumka shaashadda shaashadda ama shaashadda khafiifinta qaloocashada waxaa loo isticmaalaa in lagu dhammaystiro wareejinta daloolka ee macaamiisha looga baahan yahay dhammaan qalcadaha. Istaraatiijiyada khadku waxay noqon kartaa mid sawir qaad ah oo sawir qaad ah ama khad thermosetting ah. Marka laga hadlayo hubinta isla midabka filimka qoyan, waxaa ugu wanaagsan in la isticmaalo isla khadnimo sida dusha sare ee guddiga. Hawshani waxay xaqiijin kartaa in godadku uusan lumineynin saliid ka dib markii hawada kulul la xayiro, laakiin way fududahay in la keeno xargaha xargaha qalooca si ay u sumoobaan dusha sare ee guddiga iyo sinnaanta. Macaamiisha waxay u nugul yihiin iibinta been abuurka ah (gaar ahaan BGA) inta lagu gudajiro. Macaamiisha badan ma aqbalaan qaabkan.
2. Heerka hawada kulul iyo habka xiridda
2.1 U adeegso xaashida aluminium si aad godka u xirto, xooji, oo aad u xoojiso guddiga wareejinta garaafka
Nidaamkan tikniyoolajiyadda ayaa adeegsanaya mashiin qodista CNC si ay u qodayaan xaashida aluminium ee u baahan in lagu xiro si loo sameeyo shaashad, oo lagu xiro godka si loo hubiyo in godka loo maro si buuxda. Qalabka godka qalooca ee khadku waxaa sidoo kale loo isticmaali karaa khad biilka, iyo astaamaheeda waa inay xoog yeeshaan. , Hoos udhaca resin waa yar yahay, oo xoogga isku xidhka derbiga godku waa wanaagsan yahay. Qulqulka geeddi-socodka ayaa ah: Daawaynta Pre-Daaweynta → Qeyb ka goynta saxanka weelka → Qaabka loo wareejiyo Qaabkani wuxuu hubin karaa in qalabka godka ee daloolka ah uu yahay mid fidsan, mana jiri doonto dhibaatooyin tayo leh sida qaraxa saliida iyo dhibicda saliida ee geeska godka hawada kulul. Si kastaba ha noqotee, hanaankani wuxuu u baahan yahay mid ka sii adag oo naxaas ah si uu u sameeyo qamiirka naxaas ah ee darbiga godka uu la kulmo heerka macaamiisha. Sidaa darteed, shuruudaha ku saabsan mashiinada oo dhan ee saxanka oo dhan aad ayey u sarreeyaan, iyo waxqabadka mashiinka mashiinka saxanku sidoo kale waa mid aad u sarreeya, si loo hubiyo in dusha sare ee naxaasta la saaro, iyo dusha naxaasta ah ay nadiif tahay oo aan wasakheenin. Warshado badan oo PCB ah ma laha hanaan naxaas ah oo qaro weyn, oo waxqabadka qalabka ma buuxiyo shuruudaha, taasoo dhalisay in aan aad u isticmaalin hanaankan ee warshadaha PCB.
2.2 Ka dib markii lagu xiro godka xaashida aluminiumka, si toos ah shaashadda-daabac maaskaro dusha sare ee boodhka
Hankani wuxuu adeegsadaa mashiin qodista CNC si loo qoddo xaashida aluminium ee u baahan in lagu xiro mashiinka daabacaadda shaashadda si aad u buuxiso, oo u adeegso shaashadda si uu u xiro, oo uu si toos ah u shaashado dusha sare ee guddiga. Qulqulka geeddi-socodka ayaa ah: Protralicment-Pluent Secure-Silk Screen Screen-Silk-Silk-Silk-pre-Bagling-soo-qaadidda-Daaweynta-Daaweynta
Hawshani waxay hubin kartaa in godka loo maro iyada oo loo sii marayo saliida, godka cagaha waa fidsan, midabkii filimka qoyan waa mid joogto ah. Ka dib markii hawadu kulul tahay, waxay xaqiijin kartaa in godka loo maro meel aan la xareyn, oo godkuna ma qarin karo galmada, laakiin way fududahay in khadku ku hayo godka daloolka ka dib sababi kara kuwa saboolka ah; Ka dib markii hawadu kulul tahay, cidhifyada vias-ka ayaa laga saaraa saliida iyo saliida waa laga saaray. Way adag tahay in la isticmaalo howshan si loo xakameeyo wax soo saarka, waana lagama maarmaan in loo adeegsado injineerada si loo isticmaalo geedi socod gaar ah iyo cabirrada si loo hubiyo tayada godadka.
2.3 Xaashida aluminium-ga ayaa lagu xiraa godka, loo soo saaray, horay loo sii daaweeyay, oo la nadiifiyey, ka dibna maaskaro dusha sare ah ayaa la sameeyaa.
U adeegso mashiinka qoditaanka CNC si aad u qodasho xaashida aluminium ee u baahan godadka si aad u gasho godad si loo sameeyo shaashadda, ku rakib mashiinka daabacaadda shaashadda ee loo yaqaan 'Sart shaashadda' '' Godadku waa inay buuxsamaan oo ay labada dhinacba ka buuxsamaan, ka dibna xoojiyaan oo ay ku xoojiyaan guddiga si loogu daaweeyo dusha sare. Qulqulka geeddi-socodka ayaa ah: pre-pre-rid-rid-ref-pre-pre-pre-dubitaanka-pre-boodhka boodhka ee dusha sare ee boodhka. Sababta oo ah hanaankani wuxuu adeegsadaa goynta goynta si loo hubiyo in godka ka dib uusan hoos u dhicin ama ka dib guntin, laakiin ka dib markii la qariyey godadku waa adag yahay in godadku ay adag tahay in gabi ahaanba la xaliyo, sidaa darteed macaamiisha badan ma aqbalaan.
2.4 Maaskaro salka ku haya dusha sare ee boodhka iyo godka daloolka ayaa la dhammaystiray isla waqtigaas.
Qaabkan wuxuu adeegsadaa shaashadda 36t (43t) ee lagu rakibay shaashadda daabacaadda shaashadda, iyadoo la adeegsanayo saliidda cirka, adoo ku dhejiya dusha sare, qulqulka haraaga ah waa: baaritaanka haraaga ah - scrict-schicing-ka-soo-qaadidda-soo-qaadidda-soo-qaadidda Waqtiga hawshu waa gaaban yahay, oo heerka adeegsiga qalabku wuu sarreeyaa. Waxay xaqiijin kartaa in godadku uusan lumin saliida oo godadkuna lama isticmaali doono ka dib markii hawadu kulul tahay, laakiin sababta oo ah shaashadda xariir ayaa loo isticmaalaa xirashada, hawo badan ayaa ka jirta vias. Inta lagu gudajiro daadinta, hawadu waxay fidisaa oo jabisaa maaskaro gacanta, oo sababa godadka iyo sinnaanta. Waxaa jiri doona qadar yar oo bir ah oo loo maro godad loogu talagalay heerka hawada kulul. Waqtigan xaadirka ah, ka dib markii dhowr tijaabooyin ah, shirkadeenna waxay soo xushay noocyo kala duwan oo ah inks iyo viscosity, oo lagu xalliyay cadaadiska shaashadda, oo asal ahaan lagu xalliyay goobaha ay ka dhigto vias, waxayna qaateen hanaankan wax soo saarka ballaaran.