Kwinkqubo yokuyilwa kwe-PCB kunye nemveliso, iinjineli azidingi nje ukuthintela iingozi ngexesha lemveliso ye-PCB, kodwa kufuneka zithintele iimpazamo. Eli nqaku lishwankathela kwaye lihlalutye ezi ngxaki ziqhelekileyo zePCB, ngethemba lokuzisa uncedo lomntu wonke kunye nomsebenzi wokuvelisa.
Ingxaki 1: Ibhodi ye-PCB yesekethe emfutshane
Le ngxaki yenye yeempazamo eziqhelekileyo eziya kubangela ibhodi ye-PCB ukuba ingasebenzi, kwaye zininzi izizathu zengxaki. Masihlalutye ngelinye ingezantsi.
Esona sizathu sikhulu sesekethe emfutshane yePCB yi-tedment pad yoyilo engalunganga. Ngeli xesha, ipali yomthengisi ojikelezileyo inokutshintshwa ibe yimbonakalo ye-oval ukonyusa umgama phakathi kwamanqaku ukuthintela imijikelezo emifutshane.
Uyilo olungalunganga lwendlela ye-PCB izikhube ziya kubangela iBhodi isekethe kwaye iphumelele ukusebenza. Umzekelo, ukuba iPIN ye-SOCC ihambelana ne-tin wave, kulula ukubangela ingozi yesiphaluka esifutshane. Ngeli xesha, ulwalathiso lwenxalenye lunokuguqulwa ngokufanelekileyo ukuze lwenziwe liphesheya kwi-tin amaza.
Kukho enye indlela enokubangela ukusilela kwisikali esifutshane kwi-PCB, oko kukuthi, iplagi yeplagi ye-ongeres. Njengoko i-IPC ichaza ukuba ubude be-PIN ingaphantsi kwe-2mm kwaye kukho inkxalabo yokuba amalungu aya kuwa xa umlenze ongumlenze omkhulu, kwaye kulula ukuba ube ngaphezulu kwe-2mm ukusuka kwisekethe.
Ukongeza kwezi zizathu zithathu zikhankanywe apha ngasentla, kwanabangela izizathu ezinokubangela ukusilela kwibhodi yePCB, enjengaphantsi kweBhodi ye-Tin, i-Tin ye-Tin, kunye neBhodi yeBhodi, kunye neBhodi engaphaya kweBhodi, njl. Iinjineli zinokuthelekisa ezi zinto zingasentla kunye nokuvela kokungaphumeleli ukuphelisa kunye nokujonga enye.
Ingxaki 2: Abahlobo abamnyama nabalinganayo bavela kwibhodi yePCB
Ingxaki yombala omnyama okanye amalungu amancinci anemilinganiselo kwi-PCB ikakhulu ngenxa yongcoliseko lomthengisi kunye nee-oxis ezigqithisileyo ezixutywe kwi-morten tin, eyenzelwanga i-joltlement ye-jolttle kakhulu. Lumka ungayidibani ngombala omnyama obangelwe kukusebenzisa igosa ngomxholo we-tin ephantsi.
Esinye isizathu sale ngxaki kukuba ukubekwa komrhwebi okusetyenzisiweyo kwinkqubo yokuphucula kutshintshile, kwaye umxholo ongalunganga uphakame kakhulu. Kuyimfuneko ukongeza i-tin ecocekileyo okanye endaweni yeThutho. Iglasi yengqongwe ibangela utshintsho lomzimba kwi-fiber-up ake-up Kodwa le meko ayikho ngenxa yokudibanisa i-joshina. Isizathu kukuba i-substrate ishushu kakhulu kakhulu, ke iyimfuneko ukunciphisa iqondo lokushisa kunye nokugcinwa kobushushu okanye ukwandisa isantya sendawo.
Ingxaki yesithathu: I-PCB I-PCB I-PCBINGS YINGCINE YOBUCHULE
Phantsi kweemeko eziqhelekileyo, iBhodi yePCB yimvi yesilivere, kodwa ngamanye amaxesha iGolder Golder Joints ivele. Esona sizathu sale ngxaki kukuba iqondo lobushushu liphezulu kakhulu. Ngeli xesha, kufuneka unciphise ubushushu besithando se-tin.
Umbuzo 4: IBhodi engalunganga iyachaphazeleka yimo engqongileyo
Ngenxa yobume be-PCB ngokwayo, kulula ukubangela ukonakala kwi-PCB xa ikwimeko engalunganga. Iqondo lobushushu eligqithisileyo okanye ubushushu obuqhetseba, ukufuma kakhulu okugqithisileyo, ukuntywilisa okuphezulu kunye nezinye iimeko zonke izinto ezibangela ukuba ukwenziwa kweBhodi incitshiswe okanye kuncitshiswe. Umzekelo, utshintsho kumaqondo obushushu aphantsi luza kubangela ishedform yebhodi. Ke ngoko, uhlangatyezwa kweTswelo luya kutshatyalaliswa, ubume beBhodi buya kugoba, okanye umkhondo wobhedu ebhodini unokwaphuka.
Kwelinye icala, umswakama emoyeni zinokubangela i-oxidation, i-coresion kunye nerhukungqwitha kwindawo yolawulo lwensimbi, ukudibanisa impahla, iipads kunye nenxalenye zikhokelela. Ukuqokelelwa kobumdaka, uthuli, okanye inkunkuma kumphezulu wamacandelo kunye neebhodi zesekethe zinganciphisa ukuhamba komoya kunye nokupholisa amacandelo, kubangela ukugqitha kwe-PCB kunye nokupheliswa kwe-PCB. Ukunyikisela, ukuhla, ukubetha okanye ukugoba i-PCB kuya kuyigqitha kwaye kubangele ukuba i-culb ivele, ngelixa i-rack ivele okanye i-overvolstage iya kubangela ukuba i-PCB iqhekezwe okanye ibiwe ngokukhawuleza kwamacandelo kunye neendlela.
Ingxaki yesihlanu: Iphenya lesekethe elivulekileyo le-PCB
Xa umkhondo waphulwe, okanye xa i-ted kuphela kwi-PAD kwaye ayikho kwicandelo ukukhokelwa, isekelo evulekileyo linokwenzeka. Kule meko, akukho lumbethe okanye unxibelelwano phakathi kwecandelo kunye ne-PCB. Kanye njengabaphangi mfutshane, ezi zinokwenzeka ngexesha lokuvelisa okanye i-welding kunye neminye imisebenzi. Ukungcangcazela okanye ukolula kweBhodi yeSiphaluka, ukulahla okanye ezinye izinto zokwenza izinto zoomatshini ziya kutshabalalisa umkhondo okanye amalungu othengi. Ngokufanayo, ikhemikhali okanye i-curmation inokubangela ukuba amalungu ethengi okanye amalungu entsimbi anxibe, enokubangela icandelo lukhokelela ekuqhaphukeni.
Ingxaki yesithandathu: Ekhululekileyo
Ngexesha lenkqubo ye-ficlow, iinxalenye ezincinci zinokuhamba kumthengisi otyhidiweyo kwaye ekugqibeleni ziyeke ithegi ekujoliswe kuyo. Izizathu ezinokubakho zokufuduka okanye i-qult ibandakanya i-vibrare okanye i-zumba lezixhobo kwiBhodi yeBhodi ePhezulu yeBhodi ePhezulu, i-Worting Comples Iingxaki, iMfazwe ye-OTTAT, kunye nempazamo yomntu.
Ingxaki yesixhenxe: Ingxaki ye-Welding
Oku kulandelayo zezinye zeengxaki ezibangelwa ziindlela zokulimala ezihluphekayo:
Ijongityekisi ephazamisekileyo yomthengisi: Ithembeko ihamba ngaphambi kokuqina ngenxa yokuphazamiseka kwangaphandle. Oku kuyafana nokudibanisa umthengisi kubandayo, kodwa isizathu sahlukile. Inokulungiswa ngokuvuselela kwakhona kwaye iqinisekise ukuba amalungu othengiso akaphazanyiswa ngaphandle xa epholile.
I-welding ebandayo: Le meko yenzeka xa i-fatner ayinakunyibilikiswa ngokufanelekileyo, ikhokelela kumphezulu oqingqiweyo kunye noqhagamshelo olungathembekanga. Ukusukela kuba umntu othengisayo ukuthintela ukunyibilikisa, ukudibanisa ababandayo ababandayo kunokwenzeka. Iyeza lokuhlaziya kufuneka lihlaziye ihlazo kwaye lisuse i-Polfer.
Ibhulorho yomthengi: Oku kuyenzeka xa umthengisi waqumnqa kwaye edibanisa izibini ezikhokelela kunye. Ezi zinokwenza uqhagamshelo olungalindelekanga kunye nesekethe elifutshane, elinokubangela ukuba izinto zitshise okanye zitshise umkhondo xa iphezulu kakhulu.
I-PAD: Ukungasebenzi kakuhle kokukhokela okanye ukukhokela. Kakhulu okanye umthengisi omncinci kakhulu. Iipads eziphakanyisiweyo ngenxa yokugxeka okanye ukuthengiswa nzima.
Ingxaki yesibhozo: Impazamo yomntu
Uninzi lweziphene kwimveliso ye-PCB zibangelwa yimpazamo yomntu. Kwiimeko ezininzi, iinkqubo ezingachanekanga, ukubekwa ngokungachanekanga kwamacandelo kunye nokuchazwa kwemveliso engafezekanga kunokubangela ukuya kuthi ga kwi-64% yeziphene zemveliso ezinokuthi ziphephe. Ngenxa yezi zizathu zilandelayo, ukubakho kokubangela ukuba iziphene zonyuka ngokuntsonkothisa kunye nenani leenkqubo zemveliso: Izinto ezipakishwe ngokugqibeleleyo; Iintambo zesekethe ezininzi; i-wiring entle; izinto ezithengiswayo ezingasekhoyo; amandla kunye neendlela zomhlaba.
Nangona wonke umntu ovelisiweyo okanye i-thewobler enethemba lokuba iBhodi yePCB iveliswe ingenasiphene, kodwa zininzi uyilo lweenkqubo zenkqubo ebangela iingxaki eziqhubekayo zePCB.
Iingxaki eziqhelekileyo neziphumo zibandakanya la manqaku alandelayo: Ukurhweba kakubi kunokukhokelela kwimijikelezo emifutshane, isekethe evulekileyo, amalungu orhwebo olubandayo, njl.; Ukungasebenzi kwemisebenzi yeBhodi kunokukhokelela kunxibelelwano olugwenxa kunye nokusebenza kakubi; Ukuvalelwa okungalunganga kwemikhondo yobhedu kungakhokelela ekuhambeni nasekulandeleni kukho i-arc phakathi kweengcingo; Ukuba umkhondo wobhedu ubekwe ngokuqinileyo phakathi kweVias, kukho umngcipheko wesekethe enkulu; Ubungakanani bebhodi yesekethe buya kubangela ukugoba kunye nokuqhekeka.