PCBA ibhodi ukulungisa, kufuneka ingqalelo ukuba zeziphi iinkalo?

Njengenxalenye ebalulekileyo yezixhobo ze-elektroniki, inkqubo yokulungiswa kwe-PCBA ifuna ukuthotyelwa ngokungqongqo kunye noluhlu lweenkcukacha zobugcisa kunye neemfuno zokusebenza ukuqinisekisa umgangatho wokulungisa kunye nokuzinza kwezixhobo. Eli nqaku liza kuxubusha ngokweenkcukacha iingongoma ekufuneka zinikwe ingqalelo xa PCBA ukulungisa ukusuka kwiinkalo ezininzi, ngethemba lokuba luncedo kubahlobo bakho.

gjdf1

1, Iimfuno zokubhaka
Kwinkqubo yokulungiswa kwebhodi ye-PCBA, unyango lokubhaka lubaluleke kakhulu.
Okokuqala, ukuze kufakwe amacandelo amatsha, kufuneka abhakwe kwaye asuswe ngumswakama ngokwenqanaba lobuntununtunu bevenkile enkulu kunye neemeko zokugcina, ngokuhambelana neemfuno ezifanelekileyo ze "iKhowudi yokuSetyenziswa kwezinto ezinobumanzi", ezinokuthi. ukususa ngokufanelekileyo ukufuma kumacandelo kwaye ugweme ukuqhekeka, amaqamza kunye nezinye iingxaki kwinkqubo ye-welding.
Okwesibini, ukuba inkqubo yokulungisa kufuneka ifudunyezwe ibe ngaphezu kwe-110 ° C, okanye kukho ezinye izinto ezinobumanzi ezijikeleze indawo yokulungisa, kuyimfuneko ukubhaka kunye nokususa ukufuma ngokweemfuno zenkcazo, enokuthintela. umonakalo ophezulu weqondo lokushisa kumacandelo kunye nokuqinisekisa inkqubela phambili egudileyo yenkqubo yokulungisa.
Ekugqibeleni, kumacandelo athintela umswakama kufuneka aphinde asetyenziswe emva kokulungiswa, ukuba inkqubo yokulungiswa kwe-reflux yomoya oshushu kunye ne-infrared heat solder joints isetyenzisiweyo, kuyafuneka ukuba ubhaka kwaye ususe umswakama. Ukuba inkqubo yokulungisa ukufudumeza i-solder joint nge-manual soldering iron isetyenzisiweyo, inkqubo yokubhaka kwangaphambili ingashiywa kwisiseko sokuba inkqubo yokufudumala ilawulwa.

2.Iimfuno zokusingqongileyo zogcino
Emva kokubhaka, amacandelo e-future-sensitive, i-PCBA, njl., Kufuneka kwakhona ingqalelo kwindawo yokugcina, ukuba iimeko zokugcina zidlula ixesha, la macandelo kunye neebhodi ze-PCBA kufuneka ziphekwe kwakhona ukuqinisekisa ukuba zisebenza kakuhle kunye nokuzinza ngexesha. sebenzisa.
Ngoko ke, xa silungisa, kufuneka sinikele ingqalelo kakhulu kwiqondo lobushushu, ukufuma kunye nezinye iiparameters yendawo yokugcina ukuze siqinisekise ukuba iyahlangabezana neemfuno zenkcazo, kwaye kwangaxeshanye, kufuneka sijonge ukubhaka rhoqo ukuze kuthintelwe umgangatho onokwenzeka. iingxaki.

I-3, inani leemfuno zokulungisa ukushisa
Ngokweemfuno zenkcazo, inani elongezelelweyo lokufudumeza ukulungiswa kwecandelo aliyi kudlula amaxesha angama-4, inani elivumelekileyo lokufudumeza ukulungiswa kwecandelo elitsha aliyi kudlula amaxesha angama-5, kunye nenani elivumelekileyo lokufudumeza ukulungiswa kokusetyenziswa kwakhona okususiweyo. icandelo aliyi kudlula amaxesha ama-3.
Le mida ikhoyo ukuze kuqinisekiswe ukuba amacandelo kunye ne-PCBA abahlupheki ngokugqithisileyo xa betshiswa ngamaxesha amaninzi, okuchaphazela ukusebenza kwabo kunye nokuthembeka. Ngoko ke, inani lamaxesha okufudumala kufuneka lilawulwe ngokungqongqo ngexesha lokulungiswa. Kwangaxeshanye, umgangatho wamacandelo kunye neebhodi ze-PCBA eziye zasondela okanye zadlula umda wokufudumeza amaza okufudumeza kufuneka zihlolwe ngononophelo ukuphepha ukuzisebenzisa kwiindawo ezibalulekileyo okanye izixhobo ezithembekileyo eziphezulu.