PCB ngura inokonzerwa nezvinhu zvakawanda zvakasiyana, senge:

*Atmospheric corrosion

* Localized ngura

* Ngura yemagetsi

* Electrolytic ngura

* Electrolytic dendrite kuumbwa

* Kunetseka ngura

* Intergranular ngura

Circuit board corrosion inogona kukuvadza zvakanyanya kumabhodhi edunhu akadhindwa, uye nepo paine zvikonzero zvakawanda zvePCB corrosion, kune nzira dzakati wandei dzekuzvichenesa uchishandisa zvigadzirwa zvechinyakare zvemumba zvakaita sesoda yekubheka uye mweya wakamanikidzwa.

Kungwarira kunogonawo kutorwa kuve nechokwadi chekuti PCB corrosion haiitike mune ramangwana.

Chii chinokonzera pcb ngura?

Dunhu bhodhi ngura inogona kukuvadza kuparadza zvachose pcb, nokudaro ichichipa isina basa. Kuora uku kunogona kukonzerwa nezvikonzero zvakasiyana-siyana. Icho chiitiko cheiyo oxidation inoitika kana oxygen ikasangana nesimbi uye inokonzeresa ngura nekumhara.

Ngura yemuchadenga

Atmospheric corrosion, iyo inonyanya kuzivikanwa mhando yePCB corrosion, inosanganisira simbi iri kuratidzwa kune mwando, iyo inozoisa pachena kune oxygen. Iko kusanganiswa kwezvinhu izvi kunokonzeresa umo maion esimbi anosunganidzwa nemaatomu eokisijeni kuti vagadzire oxides.

Atmospheric corrosion inowanzoitika pamagungano emhangura. Kunyangwe mhangura ichiramba iine michina yayo kunyangwe kana yaora, haina kuchengetedza magetsi emagetsi.

Local Corrosion

Ngura yemuno yakafanana nemhando ipi neipi yengura, kunze kwekunge ichinyanya kukanganisa nzvimbo yakaganhurirwa kana diki nzvimbo. Iyi ngura inogona kusanganisira filamentous corrosion, crevice corrosion uye pitting corrosion.

Kuora kwemagetsi

Rudzi urwu rwekuora runoitika panzvimbo dzesimbi dzakasiyana-siyana uye maelectrolyte, apo simbi isingaite ngura inodya ngura nekukasira kupfuura base simbi yainoburitswa.

Electrolytic ngura

Electrolytic corrosion inoitika kana iyo dendrite ichikura nekuda kwekutarisana nematanho. Kuwedzera uku kunoitika kana mvura yakasvibiswa ionic ichipinda mumagetsi pakati pematanho maviri. Inochinja simbi tambo yakakonzera pfupi dunhu.

Electrolytic dendrite kuumbwa

Electrolytic dendrite kuumbwa kunoitika kana paine kusvibiswa kweion mumvura. Iyi deformation inokonzeresa chero yakatarisana nemhangura yemhangura ine akasiyana voltages kukura simbi mitsetse, iyo inozopedzisira yatungamira kupfupi wedunhu pakati pemateki.

Micro corrosion

Kushushikana mhedzisiro yekuramba uchidzima tinning switch. Kufamba uku kunoburitsa chiito chekupukuta chinozopedzisira chabvisa oxide layer kubva pamusoro. Kana izvi zvikaitika, rukoko pazasi payo runogadzira uye inogadzira ngura yakawandisa iyo inokanganisa mashandiro echinja.

Intergranular ngura

Iyi ngura yekupedzisira inosanganisira kuvepo kwemakemikari pamiganhu yezviyo yemutsara wemhangura, uye ngura inoitika nekuti miganho yezviyo iri nyore kutapurwa nehurombo nekuda kwehuwandu hwayo hwekusachena.

How kubvisa ngura pamusoro pcb?

Nekufamba kwenguva, zvinopfuura ngura zvinogona kuunganidzwa pane yako PCB. Tsvina, guruva uye tsvina yemarudzi ese zvinopinda zviri nyore mumidziyo yako yemagetsi. Kuadzichenesa kunogona kubatsira kudzivirira ngura. Nekudaro, kana iwe ukaona kuti iyo PCB yaora, unogona kudzidza kubvisa ngura uye kushandisa nzira dzinotevera kudzivirira kukuvara zvachose.

Shandisa yakamanikidzwa mweya

Yakamanikidzwa mweya chishandiso chakajairika chekuchenesa zvemagetsi. Iwe unogona kushandisa yakamanikidzwa mweya nekusunungura mapfupi mafuru mukati memukati meiyo mhepo. Iyi nzira yekuchenesa inokurudzirwa kuitira kugara uchichengetwa nemagetsi, saka kana uchida kugadzirisa ngura, uchafanirwa kubatidza zvemagetsi wozvirova kwazvinobva.

Shandisa baking soda

Baking soda chinhu chinoshanda kwazvo pakubvisa ngura yePCB. Kwete izvozvo chete, asi makabati ako ekicheni anogona kunge aine soda. Nekuti kubheka soda zvine mwero hasha, unogona kuishandisa kukwesha ngura uye masara ayo asingazoburitswa nemhepo yakamanikidzwa. Edza kuishandisa nebhurashi nyoro uye distilled mvura.

Shandisa mvura yakasvibiswa

Kutaura nezvemvura yakasvibiswa, chigadzirwa ichi zvakare inzira yakanaka yekuchengetedza uye nyore kubvisa kuora kubva kumapuranga edunhu. Mvura yakachena yakasvibiswa haizodzikisi kana kukuvadza magetsi ako. Iyo zvakare inotyisa conductor, saka hapana chikonzero chekushushikana.

Shandisa machenesa mumba

Chero chero imba yekuchenesa mhinduro yakanaka kune pcb ngura, asi chete kana iine isina phosphates. Phosphates inoshanda mukudzivirira ngura, asi inyaya yakakosha yekusvibisa mumadhamu eAmerica muUnited States. Nekudaro, kune akawanda akawanda maphosphate-emahara ekuchenesa anoshanda zvakanaka. Kune zvakare yakakosha PCB corrosion cleaners pamusika.

Shandisa bhurasho

Bhurashi rinogona kunge riri chishandiso chakanyanya chinobatsira paunochenesa bhodhi redunhu, sezvo richikubatsira kupinda pakati pezvinhu zvidiki zvese. Kusarudza bhurasho rine bristles rakapfava kwakakosha. Saizi yakakoshawo, sezvo iwe uchifanira kukwanisa kuwana ese maSpaces madiki.

Vanhu vazhinji vanofarira kushandisa bhurasho rezino kana pendi bhurasho. Dzakasimba uye dzakapfava, uye vanhu vazhinji vanotova neine imwe yacho.

Mucheka usina-flaring microfiber zvakare chishandiso chakanaka chekupukuta nekuomesa bhodhi pakarepo mushure mekuchenesa.

Unodzivirira sei kuora pabhodhi redunhu?

Simbi dzakasiyana dzine nhanho dzakasiyana dzengura. Kunyangwe ivo vachikwanisa kukora zvese pakupedzisira, mhangura uye mamwe masimbi esimbi anokora zvakanyanya nyore uye nekukurumidza kupfuura simbi dzinokosha uye mamwe maalloys. Iyo yekupedzisira inodhura zvakanyanya, saka nyanzvi dzakawanda dzichanamatira nesimbi yakajairika, saka zvinodikanwa kuti uzive nzira yekudzivirira PCB ngura pasina kukuvadza bhodhi rayo.

Nzira iri nyore yekudzivirira kuora pabhodhi redunhu ndeyekuisa chifukidzo panzvimbo yemhangura yakaonekwa. Kune akawanda mhando dzakasiyana dzekupfeka, kusanganisira epoxy kupfeka, aerosol spray kupfeka uye flux inhibitors.

Iwe unofanirwa zvakare kuyedza kudzivirira mwando wakakomberedza iyo PCB. Edza kuvachengeta munzvimbo isina kukanganiswa nehunyoro. Unogona kugadzirisa dambudziko iri nekushandisa humidifier mukamuri imwe chete. Asi kuziva nzira yekudzivirira pcb ngura ndiyo nhanho yekutanga yekubudirira.

kugumisa

Corrosion pamapuranga edunhu zvinowanzoitika pane imwe nguva muhupenyu hwechigadzirwa chemagetsi. Kunyangwe isu tisinganyenyeredze kuishandisa zvachose, tinogona kutora matanho ekuwedzera hupenyu hwezvigadzirwa zvemagetsi nekudzivirira ngura nekuibata zvakanaka. Zviri nyore kudzidza kuchenesa bhodhi redunhu rine ngura, asi zvakakosha.