PCB kuburikidza nepulagi gomba

Via hole inonziwo kuburikidza buri. Kuti usangane nezvinodiwa nemutengi, iyo gomba redunhu bhodhi rinofanira kuvharwa. Mushure mekudzidzira kwakawanda, echinyakare aruminiyamu plug gomba maitiro anochinjwa, uye iyo yekudzivirira yemoto uye plug gomba redunhu bhodhi pamusoro inopedzwa nechena mesh. Kugadzikana kugadzirwa uye hwakavimbika mhando.

Via hole inoita basa rekubatanidza uye kuitisa macircuit. Iko kuvandudzwa kwemagetsi indasitiri zvakare inosimudzira kuvandudzwa kwePCB, uye kunoisa kumberi zvakakwirira zvinodiwa pcb yekugadzira maitiro uye pamusoro pegomo tekinoroji. Iyo yekuvhura hole plug maitiro yakavapo uye inofanirwa kuzadzisa zvinotevera zvinodiwa:

（1） Kana paine mhangura mukati megomba, inogona kudhonzwa pasina kushomeka kwekutenderera.

（2） Panofanirwa kuve netini inotungamira mukati megomba, iine humwe hukobvu hunodikanwa (4 ma microns), uye hapana solder inopikisa inki inopinda mugomba, zvichikonzera marata etini mugomba;

（3） Iyo gomba rinofanira kunge riine solder inodzivirira ingi plug gomba, iri opaque, uye haizove neiningi mhete, tini bead, flatness uye zvimwe zvinodiwa.

Nekuvandudzwa kwezvigadzirwa zvemagetsi munzira ye “mwenje, mutete, mupfupi uye mudiki”, PCB iri kusimudzirawo kusvika pakukwirira uye kuoma kwakanyanya. Naizvozvo, pane huwandu hukuru hweSMT neBGA PCBs, uye vatengi vanoda maburi epulagi kana vachiisa zvinhu, izvo zvinonyanya kuve nemabasa mashanu:

（1, Kudzivirira pfupi redunhu inokonzerwa netini inopinda nepakati pechinhu pamusoro kubva pagomba kuburikidza nePCB pamusoro pemasaisai soldering; Kunyanya, kana isu tikaisa iyo nzira kuburikidza neBGA pad, isu tinofanirwa kutanga tagadzira iyo gomba gomba uyezve yegoridhe yakanamirwa pamoto kuti ifambise BGA Welding.

（2） Dzivisa kuyerera kwakasarira mukati megomba;

（3） Mushure mekumusoro kwepamusoro uye chikamu chemagetsi chefekitori yemagetsi chapera, iyo PCB inofanirwa kutora vacuum pane muyedzo kuti iite kumanikidza kwakashata:

（4, Dzivirira iyo yepasirese pasita kubva pakuyerera ichipinda mugomba, zvichizoguma nekunyepa kwenhema uye kukanganisa iko kuiswa;

） 5, Kudzivirira gaba marozari kubva kubuda kunze pamusoro peiyo wave soldering, zvichikonzera pfupi dunhu.

Kuziva mugomba chivhariso michina kuti conductive buri

Kune iyo yepamusoro yekukwirisa ndiro, kunyanya kuiswa kweBGA neIC, iyo gomba rehomba yegomba rinofanira kunge rakapetana, rakatenderera uye rakabatana pamwe kana kubvisa 1mil, uye kumucheto kwegomba kuburikidza hakuzove kutsvuka uye tini; Tin marozari anochengeterwa mugomba. Kuti uwane zvinodikanwa nevatengi, pane akasiyana maitiro eichi plug maburi mukati megomba. Iyo nzira kuyerera yakanyanya kureba uye maitiro ekudzora akaoma. Oiri kazhinji inodonha panguva yekupisa yemhepo yekuenzanisa uye yakasvibira oiri solder kuramba bvunzo. Kuputika kwemafuta uye mamwe matambudziko anoitika mushure mekurapa. Zvinoenderana nemamiriro ekugadzirwa chaiko, akasiyana mapulagi maburi maitiro ePBB akapfupikiswa, uye kumwe kuenzanisa uye tsananguro dzinoitwa pane izvi, zvakanakira nekuipira:

Ongorora: iyo inoshanda musimboti yemhepo inopisa yekumisikidza ndeye kushandisa unopisa mweya kubvisa yakawandisa solder pamusoro uye maburi eakadhindwa wedunhu bhodhi, uye yasara solder yakaganhurirwa yakafukidzwa padhi, isina kumiswa solder mitsara uye pamusoro pekupakira mapoinzi, ayo ndeimwe yemaitiro ekudhindwa wedunhu bhodhi pamusoro pekurapwa.

1, Plug mugomba michina mushure inopisa mhepo munoenzanisa

Iyo nzira kuyerera ndeiyi: ndiro yemvura inodziya yakatsemuka → Hal → plug gomba → kurapa. Isingaiti plug gomba maitiro anotorwa kuti agadzire. Mushure mekushisa kwemhepo unopisa, aluminium plate skrini kana inki skrini inoshandiswa kupedzisa kuburikidza nemaburi mapulagi maburi enhare dzese dzinodiwa nevatengi. Iyo ipulagi gomba inki inogona kuva photosensitive ink kana thermosetting ink. Pasi pemamiriro ekuona kusachinjika kwemvura yakanyorova firimu, ipuru gomba inki inofanirwa kushandisa inki yakafanana neplate pamusoro. Maitiro aya anogona kuve nechokwadi chekuti iyo gomba harizodonhedze mafuta mushure mekushisa kwemhepo inopisa, asi zviri nyore kukonzera iyo plug gomba inki kusvibisa iyo ndiro yepamusoro uye isina kuenzana. Vatengi zviri nyore kukonzera kunyepa kwenhema panguva yekumisikidza (kunyanya muBGA). Naizvozvo, vatengi vazhinji havabvume iyi nzira.

2, Hot mhepo munoenzanisa pamberi chivhariso mugomba michina

2.1 shandisa aruminiyamu jira kuvhara maburi, kusimbisa uye kukuya mahwendefa, uyezve wozotamisa mifananidzo

Muchiitiko ichi, muchina weCNC unocherwa unoshandiswa kuchera aruminiyamu pepa kuti riiswe, riite kuti rive skrini, uye chivhara gomba kuti uone kuti gomba rehomba gomba rizere, ipuru gomba inki, plug gomba inki, uye thermosetting ingi inogona zvakare kushandiswa. Inofanirwa kuve inozivikanwa nekukura kwakakura, diki resin shrinkage shanduko uye yakanaka kunamatira pamwe negomba madziro. Muitiro kuyerera ndiye: pretreatment → chivhariso mugomba → ndiro kukuya → muenzaniso kuchinjirwa → etching → ndiro pamusoro nemishonga nomoto

Iyi nzira inogona kuve nechokwadi chekuti gomba rehomba yegomba kuburikidza rakapfava uye mweya unopisa unodziya hauzove nezvinetso zvemhando dzakadai sekuputika kwemafuta uye kudonha kwemafuta pamucheto wegomba. Nekudaro, maitiro aya anoda imwe-nguva kuomesa yemhangura kuti iyo mhangura ukobvu hwegomba madziro kusangana nemutengi weyakajairwa. Naizvozvo, ine zvakakwirira zvinodiwa kune yemhangura yakanamirwa pamifananidzo yeplate yose uye mashandiro eplate grinder yekuona kuti resini iri pamusoro pemhangura yabviswa zvachose uye iyo yemhangura pamusoro yakachena uye haina kusvibiswa. Mafekitori mazhinji ePBB haana-nguva-imwe yekukora mhangura, uye mashandiro emidziyo haakwanise kusangana nezvinodiwa, zvichikonzera kushomeka kweichi chiitiko mumafekitori ePBB.

2.2 plug gomba rine aruminiyamu jira uye wozobva watarisa pakatarisana neplate pamusoro pekudzivirira kutenderera

Muchiitiko ichi, CNC yekuchera muchina inoshandiswa kuchera iyo aruminiyamu pepa kuti iiswe muplate plate, iyo inoiswa pane iyo skrini yekudhinda muchina wekubaya. Mushure mekubaya plugging kwapera, haifanirwe kupakwa kweanopfuura maminetsi makumi matatu, uye iyo 30t skrini inoshandiswa kutarisisa yakatarisana neplate pamusoro pekupokana nemoto. Maitiro ekuyerera ndeaya: prereatment – plugging – skrini yekudhinda – pre kuomesa – kuratidzwa – Kubudirira – kurapa

Maitiro aya anogona kuve nechokwadi chekuti chifukidziro chemafuta chegomba rakanakira, gomba repulagi rakapetana, uye iyo nyoro firimu ruvara inowirirana. Mushure mekushisa kwemhepo unopisa, inogona kuve nechokwadi chekuti hapana tini pane iyo gomba uye hapana tini marozari akavanzwa mugomba, asi zviri nyore kukonzera padhi re solder paingi mugomba mushure mekurapa, zvichikonzera kusarongeka kwakashata; Mushure mekushisa kwemweya unopisa, pamucheto weiyo kuburikidza nemaburi matema uye anodonhedza mafuta. Izvo zvakaoma kudzora kugadzirwa neiyi nzira nzira. Iwo mainjiniya ekugadzirisa anofanirwa kutora akakosha maitiro uye maparamende ekuona mhando yeiyo gomba gomba.

2.3 kuitisa ndiro pamusoro pekupokana nemoto mushure menguva aruminiyamu jira plug gomba, budiriro, pre kurapa uye kukuya.

Iyo aruminiyamu jira inoda ipulagi gomba inofanira kucherwa neNC yekuchera muchina kuti uite skrini yeplate, uye iiswe pane yekuchinja skrini yekudhinda muchina wepulagi gomba. Iyo ipulagi gomba inofanirwa kunge izere uye kubuda kumativi ese ari maviri inosarudzwa. Mushure mekurapa, iyo yekukuya ndiro ichave pasi peplate pamusoro pekurapwa. Maitiro ekuyerera ndeaya: prereatment – ipulagi gomba – pre kuomesa – Kubudirira – pre kurapa – ndiro pamusoro kuramba nemoto

Nekuti maitiro aya anotora plug gomba solidification, inogona kuve nechokwadi chekuti hapana mafuta kudonha uye kuputika kwemafuta mune iyo nzira mushure meHal, asi zvinonetsa kugadzirisa zvachose tini pane iyo kuburikidza netini marozari uye kuburikidza nemakomba mushure meHal, vatengi vazhinji vanoita kwete kuzvigamuchira.

2.4 ndiro pamusoro pemvura nomoto uye chivhariso mugomba anofanira kupedzwa panguva imwe chete.

Iyi nzira inoshandisa 36t (43T) waya pajira riya, iyo yakaiswa pamuchina wekudhinda muchina, uye inoshandisa yekutsigira ndiro kana chipikiri mubhedha kubaya ese kuburikidza maburi uchizadzisa ndiro pamusoro. Maitiro ekuyerera ndeaya: prereatment – kudhinda kwechidzitiro – pre kuomesa – kuratidzwa – Kubudirira – kurapa.

Maitiro aya ane zvakwakanakira zvenguva pfupi uye yakakwira mashandisirwo emidziyo, iyo inogona kuona kuti hapana kurasikirwa kwemafuta mugomba uye gaba pane iro gomba mushure memhepo inopisa yekuenzanisa. Nekudaro, nekuda kwekushandiswa kwesilika screen kudhinda kune plug plug, kune mweya wakawanda mukati meiyo gomba. Munguva yekusimbiswa, mweya unowedzera uye unotyora nepasolder kuramba firimu, zvichikonzera mumakomba uye kusaenzana. Kuchave nekashoma tini mukati megomba mushure mekupisa kwemhepo inopisa. Parizvino, mushure mekuwanda kwekuyedza, kambani yedu yakagadzirisa dambudziko rekuyera-gomba uye kusaenzana nekusarudza mhando dzakasiyana dzeinki uye viscosity uye kugadzirisa kumanikidza kwesilika yekudhinda. Maitiro aya akashandiswa mukugadzira kwakawanda