Sanadin farfajiyar farfajiya a ciki jirgin kewaye samar

Fushin saman allo yana ɗaya daga cikin lahani na yau da kullun a cikin aikin samar da PCB. Saboda rikitarwa na tsarin samar da PCB da kiyaye tsari, musamman a jiyya na rigar sinadarai, yana da wahala a hana lahani na kumfa. Dangane da shekaru da yawa na ƙwarewar samarwa da ƙwarewar sabis, marubucin yanzu yayi ɗan taƙaitaccen bincike kan abubuwan da ke haifar da ɓarna a saman allon kewaye na jan ƙarfe, yana fatan zai taimaka wa takwarorina a cikin masana’antar!

Matsalar kumburi a saman allo na allon da’irar shine ainihin matsalar rashin adhesion na saman allon, sannan shine matsalar ingancin farfajiyar saman allo, wanda ya ƙunshi fannoni biyu:

1. Tsaftar saman allo;

2. Ƙanƙarar micro surface (ko kuzarin farfajiya); Ana iya taƙaita duk matsalolin murƙushewar allo a kan allon da’irar azaman dalilan da ke sama. Mannewa tsakanin suturar ba shi da kyau ko yayi ƙasa. Yana da wuyar tsayayya da matsin lamba, matsin lamba na injiniya da matsin lamba na zafi wanda aka samar a cikin samarwa da aiwatarwa a cikin samarwa da sarrafawa mai zuwa da tsarin taro, wanda ke haifar da rabuwa da sutura zuwa digiri daban -daban.

An taƙaita wasu abubuwan da ke iya haifar da rashin ingancin farantin farantin a yayin samarwa da sarrafawa kamar haka:

1. Matsalolin tsarin sarrafa substrate; Musamman ga wasu substrates na bakin ciki (gabaɗaya ƙasa da 0.8mm), saboda ƙarancin ƙarfi na substrate, bai dace a goge farantin tare da injin goga ba, wanda ba zai iya cire murfin kariya na musamman da aka yi niyya don hana oxyidation na Takardar jan karfe a saman farantin yayin samarwa da sarrafa substrate. Kodayake Layer yana da kauri kuma farantin goge yana da sauƙin cirewa, yana da wahala a ɗauki maganin sinadarai, Saboda haka, yana da mahimmanci a kula da sarrafawa a samarwa da sarrafawa, don gujewa matsalar kumburin da rashin gamsuwa tsakanin da substrate jan karfe da sinadaran jan karfe; Lokacin baƙar fata bakin ciki na ciki, za a kuma sami wasu matsaloli, kamar rashin baƙar fata da launin shuɗi, launin da ba daidai ba, da talaucin launin ruwan kasa mai duhu.

2. Gurɓataccen mai ko wasu gurɓataccen ruwa, gurɓataccen ƙura da rashin kulawa ta farfaɗo ta hanyar faranti na faranti (hakowa, lamination, milling Edge, da sauransu).

3. Farantin farantin goshi na jan ƙarfe: matsin farantin niƙa kafin zubar da jan ƙarfe ya yi yawa, wanda ke haifar da naƙasasshe na murɗaɗɗen wuta, yana fitar da fillet ɗin jan ƙarfe na maƙogwaron har ma yana zubar da kayan aikin tushe, wanda zai haifar kumfa mai jujjuyawa yayin aiwatar da jigilar jan ƙarfe, electroplating, fesa tin da walda; Ko da farantin goga ba ya zubo abin da ke ƙasa, farantin goga mai nauyi zai ƙara kaurin jan ƙarfe a wurin. Sabili da haka, yayin aiwatar da ƙaramin ƙaramin ƙaramin ƙamshi, murfin jan ƙarfe a wannan wuri yana da sauƙin sauƙaƙewa sosai, kuma za a sami wasu ɓoyayyun haɗari masu haɗari; Sabili da haka, yakamata a mai da hankali don ƙarfafa sarrafa tsarin farantin goga. Za’a iya daidaita sigogin tsarin farantin goge zuwa mafi kyau ta hanyar gwajin alamar lalacewa da gwajin fim ɗin ruwa.

4. Matsalar wankin ruwa: saboda maganin jan ƙarfe na jan ƙarfe yana buƙatar maganin maganin sinadarai da yawa, akwai nau’ikan acid-base, Organic da ba na polar da sauran sauran magunguna ba, kuma ba a wanke saman farantin da kyau. Musamman, daidaitawar wakili mai ɗimbin yawa don zubar da jan ƙarfe ba kawai zai haifar da gurɓataccen giciye ba, har ma yana haifar da mummunan jiyya na gida ko tasirin magani mara kyau da lahani mara kyau a saman farantin, wanda ke haifar da wasu matsaloli a haɗe; Don haka, ya kamata a mai da hankali kan ƙarfafa sarrafa wankin ruwa, galibi ya haɗa da kula da tsabtace ruwa, ingancin ruwa, lokacin wankin ruwa, lokacin faɗuwar farantin da sauransu; Musamman a cikin hunturu, lokacin da zafin jiki yayi ƙasa, tasirin wankin zai ragu sosai. Yakamata a mai da hankali sosai ga ikon sarrafa wanki.

5. Micro corrosion a cikin magudanar ajiyar kayan girki da ƙirar electroplating pretreatment; Wuce kima micro etching zai haifar da ɓarna na substrate a kusurwar ido da ƙyalli a kusa da wurin. Rashin isasshen micro etching kuma zai haifar da rashin isasshen ƙarfin haɗin gwiwa da sabon abu kumfa; Sabili da haka, ya kamata a ƙarfafa kulawar micro etching; Gabaɗaya, zurfin zurfin ƙirar ƙirar ƙirar jan ƙarfe shine micron 1.5-2, kuma zurfin ƙirar ƙirar ƙirar ƙirar ƙirar ƙirar ƙirar ƙirar ƙirar 0.3-1 microns. Idan za ta yiwu, yana da kyau a sarrafa kaurin micro etching ko ƙima ta hanyar nazarin sunadarai da hanyar ma’aunin gwaji mai sauƙi; Gabaɗaya, launi na farantin farantin dan kadan mai haske yana da haske, ruwan hoda ɗaya, ba tare da tunani ba; Idan launi ba daidai ba ne ko yin tunani, yana nuna cewa akwai yuwuwar haɗarin inganci a cikin kafin aiwatar da aikin masana’antu; Kula da ƙarfafa dubawa; Bugu da ƙari, yakamata a kula da abun cikin jan ƙarfe, zafin wanka, kaya da ƙananan abun ciki na tankin micro etch.

6. Ayyukan maganin hazo na jan ƙarfe yana da ƙarfi sosai; Abubuwan da ke cikin manyan abubuwa guda uku a cikin sabon silinda da aka buɗe ko ruwan tankin ruwan hazo na jan ƙarfe ya yi yawa, musamman abun cikin jan ƙarfe ya yi yawa, wanda zai haifar da lahani na aiki mai ƙarfi na ruwan tanki, adadi mai yawa na jan ƙarfe, haɗawa da yawa na hydrogen, cuprous oxide da sauransu a cikin sinadarin jan ƙarfe na sinadarai, wanda ke haifar da raguwar ingancin kadarorin jiki da rashin mannewa na rufi; Za’a iya karɓar hanyoyin da ke ƙasa: rage abun jan ƙarfe, (ƙara ruwa mai tsabta a cikin ruwan tanki) gami da abubuwa guda uku, yadda yakamata ƙara abun ciki na wakili mai rikitarwa da mai daidaitawa, da kuma rage zafin zafin ruwan tankin.

7. Oxidation na farantin karfe yayin samarwa; Idan farantin nutsewar jan ƙarfe yana oxidized a cikin iska, ƙila ba kawai zai haifar da jan ƙarfe a cikin rami da farfajiyar farantin ba, amma kuma yana haifar da ɓarna a saman farantin; Idan an adana farantin jan ƙarfe a cikin maganin acid na dogon lokaci, farfajiyar farantin shima za a yi oxide, kuma wannan fim ɗin oxide yana da wahalar cirewa; Sabili da haka, a cikin tsarin samarwa, farantin jan ƙarfe yakamata ya yi kauri cikin lokaci. Kada a adana shi na dogon lokaci. Gabaɗaya, yakamata a rufe murfin jan ƙarfe a cikin awanni 12.

8. Sake aiki mara kyau na ajiyar jan ƙarfe; Wasu faranti da aka sake yin aiki da su bayan sanya jan ƙarfe ko jujjuyawar ƙirar zai haifar da ɓarna a saman farantin saboda faɗuwar faɗuwa mara kyau, hanyar sake yin kuskure, rashin sarrafa madaidaicin lokacin ɓarna a cikin aikin rework ko wasu dalilai; Ayyukan farantin nutsewa na jan ƙarfe idan an sami lahani na jan ƙarfe a kan layi, ana iya cire shi kai tsaye daga layin bayan wankin ruwa, sannan a sake yin aiki kai tsaye ba tare da lalata ba bayan tsinke; Yana da kyau kada a sake cire mai da ɗan ɓarna; Don farantan da aka yi wa kauri da ƙarfin lantarki, ya kamata a rage ɓoyayyen tsararren tsararren micro. Kula da sarrafa lokaci. Kuna iya ƙididdige lokacin ɓacewa tare da faranti ɗaya ko biyu don tabbatar da tasirin faduwa; Bayan an cire farantin, za a yi amfani da gungun goga mai taushi mai laushi a bayan injin goga don goge haske, sannan za a ajiye jan ƙarfe gwargwadon tsarin samarwa na yau da kullun, amma za a rage ko rage lokacin da aka tsara. dole.

9. Rashin isasshen wankin ruwa bayan haɓakawa, tsawon lokacin ajiya bayan haɓakawa ko ƙura mai yawa a cikin bitar yayin aiwatar da jujjuyawar hoto zai haifar da rashin tsaftar farfajiyar allo da ƙarancin tasirin maganin fiber, wanda zai iya haifar da matsaloli masu inganci.

10. Kafin rufin tagulla, za a maye gurbin tankin dakon kaya cikin lokaci. Yawan gurɓataccen iska a cikin ruwan tanki ko ƙima mai yawa na jan ƙarfe ba kawai zai haifar da matsalar tsabtace farantin farantin ba, amma kuma yana haifar da lahani kamar rashin ƙarfi na farantin farantin.

11. Gurbacewar kwayoyin halitta, musamman gurɓataccen mai, yana faruwa a cikin tankin lantarki, wanda ya fi dacewa ya faru don layin atomatik.

12. Bugu da kari, a cikin hunturu, lokacin da maganin wanka a wasu masana’antun ba mai zafi ba, yakamata a biya kulawa ta musamman ga ciyar da faranti a cikin wanka a cikin aikin samarwa, musamman banɗar wanka tare da motsa iska, kamar jan ƙarfe da nickel; Don silinda na nickel, yana da kyau a ƙara tankin wankin ruwa mai ɗumi kafin nickel plating a cikin hunturu (zafin ruwan yana kusan 30-40 ℃) don tabbatar da ƙanƙantar da kyakkyawan matakin farko na layin nickel.

A cikin ainihin tsarin samarwa, akwai dalilai da yawa don ɓarna a saman allo. Marubucin zai iya yin taƙaitaccen nazari kawai. Don matakin fasaha na kayan aiki na masana’antun daban -daban, ƙila za a sami kumburin da ya haifar da dalilai daban -daban. Ya kamata a bincika takamaiman yanayin dalla -dalla, wanda ba za a iya rarrabuwa da kwafe shi ta hanyar inji ba; Binciken dalilin da ke sama, ba tare da la’akari da mahimmancin na farko da na biyu ba, a zahiri yana yin taƙaitaccen bincike gwargwadon tsarin samarwa. Wannan jerin kawai yana ba ku jagorar warware matsala da hangen nesa. Ina fatan zai iya taka rawa wajen jefa tubali da jan hankalin jidda don samar da aikin ku da warware matsalar!