PCB ta hanyar ramin toshe

Via rami kuma ana kiranta ta rami. Domin biyan buƙatun abokin ciniki, dole ne a toshe ramin allon kewaye. Bayan yin aiki da yawa, ana canza tsarin ramin toshe na aluminium na al’ada, kuma ana kammala walda juriya da ramin ramin saman allon kewaye da farin raga. Stable samar da abin dogara inganci.

Ta hanyar rami yana taka rawa wajen haɗawa da gudanar da da’irori. Haɓaka masana’antar lantarki kuma yana haɓaka ci gaban PCB, kuma yana gabatar da buƙatu mafi girma don tsarin masana’antar PCB da fasahar dutsen saman. Tsarin toshe rami ya kasance kuma yakamata ya cika waɗannan buƙatun:

（1） Idan akwai jan ƙarfe a cikin ramin, ana iya toshe shi ba tare da waldi ba;

（2 must Dole ne a sami gubar kwalba a cikin rami, tare da takamaiman kauri (4 microns), kuma babu tawada mai tsayayya da takin da zai shiga ramin, wanda zai haifar da ƙyallen kwalba a cikin ramin;

（3） Dole ta cikin rami dole ne ya kasance yana da ramin tawada tafin rami, wanda ba shi da kyau, kuma ba zai sami zobe na kwano, ƙyallen kwano, ƙyalli da sauran buƙatun ba.

Tare da haɓaka samfuran lantarki a cikin hanyar “haske, na bakin ciki, gajeru da ƙanana”, PCB kuma yana haɓaka zuwa ƙima mai yawa da babban wahala. Don haka, akwai adadi mai yawa na SMT da PCBs na BGA, kuma abokan ciniki suna buƙatar ramukan toshe yayin shigar da abubuwan haɗin gwiwa, wanda galibi yana da ayyuka biyar:

（1） Hana gajeriyar da’irar da tin ta shiga ta cikin farfajiyar sinadarin daga cikin rami yayin PCB akan jujjuyawar igiyar ruwa; Musamman, lokacin da muka sanya layin akan faifan BGA, dole ne mu fara yin ramin toshe sannan kuma zana zinariya don sauƙaƙe walda BGA.

Void 2） Guji juyewar ruwa a cikin rami;

（3） Bayan an gama hawa saman da haɗin ginin masana’antar lantarki, PCB ya kamata ya sha injin akan mai gwajin don samar da matsin lamba mara kyau:

（4） Hana manna mai siyar da ƙasa daga kwarara cikin rami, yana haifar da walda na ƙarya kuma yana shafar shigarwa;

（5） Hana beads na tin daga fitowa a lokacin jujjuyawar igiyar ruwa, wanda ke haifar da gajeren zango.

Gane fasahar toshe rami don rami mai gudana

Don farantin hawa na farfajiya, musamman hawa BGA da IC, ramin toshe na rami dole ne ya zama madaidaiciya, convex da concave plus ko debe 1mil, kuma gefen ramin ba zai zama ja da kwano ba; Ana adana beads na cikin rami. Domin biyan buƙatun abokan ciniki, akwai matakai daban -daban don ramukan rami a cikin rami. Gudun aiwatarwa yana da tsawo musamman kuma sarrafa tsari yana da wahala. Man yana fadowa a lokacin matakin iska mai zafi da gwajin juriya na mai. Fashewar mai da sauran matsaloli na faruwa bayan warkewa. Dangane da ainihin yanayin samarwa, an taƙaita matakai daban -daban na ramin rami na PCB, kuma ana yin wasu kwatancen da bayani akan tsari, fa’idodi da rashin amfani:

Lura: ƙa’idar aiki na matakin iska mai zafi shine amfani da iska mai zafi don cire mai siyarwa mai yawa akan farfajiya da ramuka na allon da’irar da aka buga, kuma sauran murfin an rufe shi a ko’ina akan kushin, lamuran mara nauyi mara nauyi da wuraren fakitin faifai, wanda yana ɗaya daga cikin hanyoyin buga allon farfajiya na kewaye.

1, Toshe ramin fasahar bayan zafi iska leveling

Gudun aiwatarwa shine: walƙiyar farfajiyar farfajiyar → Hal -toshe rami, warkewa. An fara aiwatar da ramin ramin mara tushe don samarwa. Bayan daidaitawar iska mai zafi, ana amfani da allon farantin aluminium ko allon tawada don kammala ramukan ramin ramuka na duk ƙauyukan da abokan ciniki ke buƙata. Tawada ramin toshe na iya zama tawada mai ɗaukar hoto ko tawada thermosetting. A ƙarƙashin yanayin tabbatar da daidaiton launin fim ɗin rigar, ink ɗin ramin toshe yakamata ya yi amfani da tawada iri ɗaya kamar saman farantin. Wannan tsari na iya tabbatar da cewa ramin ba zai sauke mai ba bayan matakin iska mai zafi, amma yana da sauƙi a sa tawada ramin rami ya gurɓata saman farantin kuma ba daidai ba. Abokan ciniki suna da sauƙin haifar da siyar da ƙarya yayin hawa (musamman a BGA). Saboda haka, yawancin abokan ciniki ba sa yarda da wannan hanyar.

2, Hot iska matakin gaban toshe rami fasaha

2.1 amfani da takardar aluminium don toshe ramuka, ƙarfafa da niƙa faranti, sannan canja wurin zane

A cikin wannan tsari, ana amfani da injin hakowa na CNC don hako takardar aluminium da za a toshe, sanya shi cikin allo, da toshe ramin don tabbatar da cewa ramin ramin ya cika, tawada ramin rami, tawada ramin rami, da thermosetting Hakanan za’a iya amfani da tawada. Dole ne a rarrabe shi da babban taurin kai, ƙaramin canjin resin ƙuntatawa da adhesion mai kyau tare da bangon rami. Gudun aiwatarwa shine: pretreatment, ramin toshe, farantin niƙa, canja wurin tsari, etching, farantin farfajiya na farfajiya.

Wannan hanyar za ta iya tabbatar da cewa ramin ramin ramin ya zama lebur kuma matakin iska mai zafi ba zai sami matsalolin inganci kamar fashewar mai da digon mai a gefen ramin ba. Koyaya, wannan tsari yana buƙatar kaurin jan ƙarfe sau ɗaya don yin kaurin jan ƙarfe na bangon rami ya dace da ma’aunin abokin ciniki. Sabili da haka, yana da manyan buƙatu don farantin jan ƙarfe na farantin duka da kuma aikin injin injin don tabbatar da cewa an cire resin da ke saman jan ƙarfe gaba ɗaya kuma saman jan ƙarfe yana da tsabta kuma baya ƙazantu. Yawancin masana’antun PCB ba su da tsari mai kauri na jan ƙarfe guda ɗaya, kuma aikin kayan aikin ba zai iya cika buƙatun ba, wanda hakan ke haifar da ƙarancin amfani da wannan tsari a masana’antun PCB.

2.2 toshe ramin tare da takardar aluminium sannan kuma kai tsaye allon allon farantin don walda juriya

A cikin wannan tsari, ana amfani da injin hakowa na CNC don hako takardar aluminium da za a saka ta cikin faranti na allo, wanda aka sanya a kan injin bugun allo don toshewa. Bayan an gama toshe, ba za a ajiye shi sama da mintuna 30 ba, kuma ana amfani da allon 36t don nuna allon farantin kai tsaye don walda juriya. Gudun aiwatarwa shine: prereatment – plugging – bugun allo – kafin bushewa – fallasa – Ci gaba – warkewa

Wannan tsari na iya tabbatar da cewa murfin mai na ramin yana da kyau, ramin toshe yana leɓe, kuma launin fim ɗin rigar ya daidaita. Bayan daidaitawar iska mai zafi, zai iya tabbatar da cewa babu kwalba a cikin rami kuma babu beads ɗin da ke ɓoye a cikin ramin, amma yana da sauƙi a haifar da faranti mai ƙyalli a kan tawada a cikin rami bayan ya warke, wanda ke haifar da ƙarancin ƙarfi; Bayan daidaitawar iska mai zafi, gefen ramin yana kumfa yana sauke mai. Yana da wuyar sarrafa sarrafawa ta wannan hanyar aiwatarwa. Injiniyoyin aiwatarwa dole ne su ɗauki matakai na musamman da sigogi don tabbatar da ingancin ramin toshe.

2.3 gudanar farantin farantin juriya na waldi bayan ramin farantin takardar aluminium, haɓakawa, pre curing da nika.

Za a haƙa takardar takardar aluminium da ke buƙatar ramin toshe tare da injin hakowa na NC don yin farantin allo, kuma a sanya shi a kan injin jujjuyawar allo don ramin toshe. Dole ramin toshe ya cika kuma ya fi fitowa daga bangarorin biyu an fi so. Bayan warkewa, farantin nika zai kasance ƙarƙashin kulawar farfajiya. Gudun aiwatarwa shine: prereatment – ramin toshe – bushewa kafin – Ci gaba – warkewa kafin – walƙiyar farfajiyar farfajiya

Saboda wannan tsari yana ɗaukar ƙarfin ramin toshe, yana iya tabbatar da cewa babu digo na mai da fashewar mai a cikin bayan bayan Hal, amma yana da wahala a gama warware tukunyar akan ƙyallen kwano da ramuka bayan Hal, don haka abokan ciniki da yawa suna yin hakan kar a karba ba.

2.4 farantin juriya na waldi da ramin toshe za a kammala a lokaci guda.

Wannan hanyar tana amfani da ragin waya na 36t (43T), wanda aka sanya a kan injin bugun allo, kuma yana amfani da farantin goyan baya ko gadon ƙusa don toshe duk ramukan yayin kammala saman farantin. Gudun aiwatarwa shine: pretreatment – bugun allo – kafin bushewa – fallasa – Ci gaba – warkewa.

Wannan tsari yana da fa’ida na ɗan gajeren lokaci da yawan amfani da kayan aiki, wanda zai iya tabbatar da cewa babu asarar mai a cikin rami da kwano a rami bayan matakin iska mai zafi. Koyaya, saboda amfani da bugun allo na siliki don ramin toshe, akwai iska mai yawa a cikin ramin. A lokacin ƙarfafawa, iska tana faɗaɗawa da fashewa ta hanyar fim ɗin tsayayyar solder, wanda ke haifar da ramuka da rashin daidaituwa. Za a sami ƙaramin tin a cikin rami bayan matakin iska mai zafi. A halin yanzu, bayan yawan gwaje-gwaje, kamfaninmu ya warware matsalar ramin rami da rashin daidaituwa ta hanyar zaɓar nau’ikan tawada da danko da daidaita matsin lamba na bugun allo na siliki. An yi amfani da wannan tsari don samar da taro