Kutheni utshiza ipeyinti kwibhodi yesekethe?

1. Yintoni ipeyinti enobungqina obuthathu?

I-anti-peyinti emithathu yifomula ekhethekileyo yepeyinti, esetyenziselwa ukukhusela iibhodi zeesekethe kunye nezixhobo ezinxulumene nokukhukuliseka kwendalo. Ipeyinti yobungqina obuthathu inokumelana kakuhle nokushisa okuphezulu kunye nokuphantsi; yenza ifilimu ekhuselayo ecacileyo emva kokunyanga, ene-insulation egqwesileyo, ukumelana nomswakama, ukuxhathisa ukuvuza, ukuxhathisa ukothuka, ukumelana nothuli, ukuxhathisa ukubola, ukumelana nokuguga, ukuxhathisa kwe-corona kunye nezinye iimpawu.

Ngaphantsi kweemeko zangempela, ezifana neekhemikhali, ukungcangcazela, uthuli oluphezulu, ukutshiza ityuwa, ukufuma kunye nobushushu obuphezulu, ibhodi yesekethe inokuba ne-corrosion, softening, deformation, mildew kunye nezinye iingxaki, ezinokubangela ukuba ibhodi yesiphaluka ingasebenzi kakuhle.

Ipeyinti yobungqina obuthathu ifakwe kumphezulu webhodi yesekethe ukwenza umaleko wefilimu ekhuselayo enobungqina obuthathu (ubungqina obuthathu bubhekiselele ekuchaseni ukufuma, ukutshiza ityuwa kunye ne-anti-mildew).

2, iinkcukacha kunye neemfuno zenkqubo yokulwa nepeyinti ezintathu

Iimfuno zokupeyinta:
1. Ukutshiza ubukhulu bepeyinti: ubukhulu befilimu yepeyinti bulawulwa ngaphakathi kwe-0.05mm-0.15mm. Ubunzima befilimu eyomileyo yi-25um-40um.

2. Ukugquma okwesibini: Ukuze kuqinisekiswe ubuninzi beemveliso ezineemfuno eziphezulu zokukhusela, ukugquma okwesibini kunokwenziwa emva kokuba ifilimu yepeyinti iphiliswe (ukugqiba ukuba wenze i-coating yesibini ngokweemfuno).

3. Ukuhlolwa nokulungiswa: khangela ngokubonakalayo ukuba ibhodi yesekethe edibeneyo ihlangabezana neemfuno zomgangatho, kwaye ulungise ingxaki. Ngokomzekelo, ukuba izikhonkwane kunye nezinye iindawo zokukhusela zihlanjululwe ngepeyinti yobungqina obuthathu, sebenzisa i-tweezers ukubamba ibhola yekotoni okanye i-cotton ball ecocekileyo efakwe emanzini ebhodi yokuhlamba ukuyicoca. Xa ukhuhla, qaphela ukuba ungayihlambi ifilimu yepeyinti eqhelekileyo.

4. Ukutshintshwa kwamacandelo: Emva kokuba ifilimu yepeyinti iphilisiwe, ukuba ufuna ukutshintsha amacandelo, unokwenza ngolu hlobo lulandelayo:

(1) Solder amacandelo ngokuthe ngqo ngentsimbi yombane yechromium, kwaye emva koko usebenzise ilaphu lomqhaphu elifakwe emanzini ebhodi ukucoca imathiriyeli ejikeleze iphedi.
(2) Ukuwelda amanye amacandelo
(3) Sebenzisa ibrashi ukudipha ipeyinti enobungqina obuthathu ukubrasha indawo yokuwelda, kwaye wenze umphezulu wefilimu yepeyinti wome kwaye uqine.

Iimfuno zokusebenza:
1. Indawo yokusebenza yepeyinti enobungqina obuthathu mayingabi nathuli kwaye icoceke, kwaye kungabikho luthuli lubhabhayo. Kufuneka kubekho umoya omhle kwaye abasebenzi abangabalulekanga abavumelekanga ukuba bangene.

2. Gqoka iimaski okanye iimaski zegesi, iiglavu zerabha, iiglasi zokukhusela iikhemikhali kunye nezinye izixhobo zokukhusela ngexesha lokusebenza ukuphepha ukulimala emzimbeni.

3. Emva kokuba umsebenzi ugqityiwe, coca izixhobo ezisetyenzisiweyo ngexesha, kwaye uvale kwaye uvale ngokuqinileyo isitya ngepeyinti yobungqina obuthathu.

4. Imilinganiselo ye-Anti-static kufuneka ithathwe kwiibhodi zeesekethe, kwaye iibhodi zeesekethe akufanele zigqitywe. Ngethuba lenkqubo yokugubungela, iibhodi zeesekethe kufuneka zibekwe ngokuthe tye.

Iimfuno zomgangatho:
1. Umphezulu webhodi yesekethe akufanele ube nokuhamba kwepeyinti okanye ukuvuza. Xa ipeyinti ipeyintiwe, akufanele ithontsize kwindawo esecaleni.

2. Uluhlu lwepeyinti yobungqina obuthathu kufuneka bube tyaba, bukhanye, bufanane ngobukhulu, kwaye bukhusele umphezulu wepeyinti, icandelo le-patch okanye i-conductor.

3. Umphezulu woluhlu lwepeyinti kunye namacandelo akumele ube neziphene ezinjengamaqamza, imibhobho, i-ripples, imingxuma eyanciphayo, uthuli, njl. njl. kunye nezinto zangaphandle, akukho chalking, akukho nto yokuxobula, qaphela: ngaphambi kokuba ifilimu yepeyinti yome, yenza. ungayichukumisi ipeyinti ngokwentando yenwebu.

4. Amacandelo okanye iindawo ezizimeleyo azikwazi ukufakwa ngepeyinti yobungqina obuthathu.

3. Amalungu kunye nezixhobo ezingenakugqunywa ngepeyinti ehambelanayo

(1) Izixhobo eziqhelekileyo ezingagqunywanga: peyinta iradiyetha enamandla amakhulu, isinki yobushushu, isixhasi sombane, isixhasi samandla aphezulu, isixhasi sesamente, iswitshi yekhowudi, i-potentiometer (isixhasi esinokulungiswa), ibuzzer, isibambi sebhetri, isibambi sefuse, iisokethi zeIC, ukukhanya. i-touch switch, i-relays kunye nezinye iintlobo zeziseko, ii-pin headers, iibhloko ze-terminal kunye ne-DB9, i-plug-in okanye i-SMD ye-light-emitting diodes (umsebenzi ongabonisi), iibhubhu zedijithali, imingxuma ye-screw yomhlaba.

(2) Amalungu kunye nezixhobo ezichazwe kwimizobo engenakusetyenziswa ngepeyinti yobungqina obuthathu.
(3) Ngokutsho kwe "Catalogue of Non-Three-proof Components (Indawo)", kuchazwe ukuba izixhobo ezinepeyinti yobungqina obuthathu azikwazi ukusetyenziswa.

Ukuba izixhobo eziqhelekileyo ezingabonakaliyo kwimimiselo kufuneka zifakwe, zinokuthi zifakwe kwi-coating yobungqina obuthathu obuchazwe lisebe le-R & D okanye imidwebo.

Okwesine, izilumkiso zenkqubo yokutshiza i-anti-peint ezintathu zezi zilandelayo

1. I-PCBA kufuneka yenziwe ngomphetho owenziweyo kwaye ububanzi akufanele bube ngaphantsi kwe-5mm, ukwenzela ukuba kube lula ukuhamba kumatshini.

2. Ubude obuninzi kunye nobubanzi bebhodi ye-PCBA yi-410 * 410mm, kwaye ubuncinane yi-10 * 10mm.

3. Ubude obuphezulu bamacandelo afakwe kwi-PCBA yi-80mm.

4. Umgama omncinci phakathi kwendawo etshiziweyo kunye nendawo engatshizwanga yamacandelo kwi-PCBA yi-3mm.

5. Ukucocwa ngokucokisekileyo kunokuqinisekisa ukuba ii-residus ezitshabalalisayo zisuswe ngokupheleleyo, kwaye wenze ipeyinti yobungqina obuthathu ibambelele kumphezulu webhodi yesekethe kakuhle. Ubukhulu bepeyinti bukhethwa phakathi kwe-0.1-0.3mm. Iimeko zokubhaka: 60 ° C, imizuzu eyi-10-20.

6. Ngethuba lenkqubo yokutshiza, amanye amacandelo awakwazi ukutshizwa, njengale: i-high-power-radiating surface okanye i-radiator, i-resistors yamandla, i-diode yamandla, i-samente resistors, i-dial switches, i-resistors ehlengahlengiswayo, i-buzzers, i-Battery holder, i-inshurensi (i-tube) , isibambi se-IC, iswitshi yokucofa, njl.
V. Ukuqaliswa kwebhodi yesekethe ye-tri-proof paint rework

Xa ibhodi yesekethe idinga ukulungiswa, amacandelo abiza kakhulu kwibhodi yesekethe anokuthi athathwe ngokwahlukileyo kwaye amanye angalahlwa. Kodwa indlela eqhelekileyo kukususa ifilimu ekhuselayo kuyo yonke okanye inxalenye yebhodi yesiphaluka, kwaye ithathe indawo yamacandelo awonakalisiweyo omnye komnye.

Xa ususa ifilimu ekhuselayo yepeyinti yobungqina obuthathu, qinisekisa ukuba i-substrate phantsi kwecandelo, ezinye izinto ze-elektroniki, kunye nesakhiwo esikufutshane nendawo yokulungisa ayiyi konakala. Iindlela zokususa ifilimu ezikhuselayo ziquka: ukusebenzisa i-solvents yamachiza, i-micro-grinding, iindlela zomatshini kunye ne-desoldering ngokusebenzisa ifilimu ekhuselayo.

Ukusetyenziswa kwe-solvents yamachiza yindlela esetyenziswa ngokuqhelekileyo yokususa ifilimu ekhuselayo yepeyinti yobungqina obuthathu. Into ephambili ilele kwiimpawu zeekhemikhali zefilimu yokukhusela ukuba isuswe kunye neempawu zeekhemikhali ze-solvent ethile.

I-Micro-grinding isebenzisa iinqununu ezikhawulezayo ezikhutshwe kwi-nozzle ukuze "zigaye" ifilimu ekhuselayo yepeyinti yobungqina obuthathu kwibhodi yesiphaluka.

Indlela yomatshini yindlela elula yokususa ifilimu ekhuselayo yepeyinti yobungqina obuthathu. I-desoldering ngokusebenzisa ifilimu ekhuselayo kukuqala ukuvula umngxuma wokukhupha kwifilimu ekhuselayo ukuvumela ukuba i-solder etyhidiweyo ikhutshwe.