Kodi Flux Ndi Yofunika Chiyani?

NeoDen IN12 reflow uvuni

Flux ndichinthu chofunikira chothandizira pakuwotcherera kwa bolodi la PCBA.Ubwino wa flux udzakhudza mwachindunji khalidwe lareflow uvuni.Tiyeni tiwone chifukwa chake flux ndi yofunika kwambiri.

1. mfundo kuwotcherera flux

Flux imatha kunyamula mphamvu yowotcherera, chifukwa maatomu achitsulo amakhala pafupi wina ndi mnzake pambuyo pakufalikira, kusungunuka, kulowa mkati ndi zina.Kuwonjezera pa kufunika kukumana kuchotsa oxides ndi zoipitsa mu kutsegula ntchito, komanso kukumana sanali dzimbiri, kutchinjiriza, kukana chinyezi, bata, kuipa, chiyero ndi zina zofunika.Nthawi zambiri, zigawo zake zazikulu ndizomwe zimagwiritsidwa ntchito, filimu - kupanga zinthu, zowonjezera, zosungunulira ndi zina zotero.

2. Chotsani okusayidi pamwamba pa chitsulo chosungunuka

M'malo abwinobwino am'mlengalenga, nthawi zambiri pamakhala ma oxides pamwamba pazitsulo zowotcherera.Ma oxides awa adzakhala ndi vuto linalake pakunyowetsa kwa solder panthawi yowotcherera, zomwe zidzakhudza njira yowotcherera ndi zotsatira zowotcherera.makina opangira zitsulo.Choncho, flux ayenera kuchepetsa oxides, ndi kuwotcherera PCBA processing akhoza kuchitidwa bwinobwino.

3. Kupewa oxidation yachiwiri

Mu kuwotcherera ndondomeko PCBA processing, Kutentha chofunika.Komabe, pakuwotha, kutulutsa okosijeni mwachangu kudzachitika pamwamba pazitsulo chifukwa cha kuchuluka kwa kutentha.Panthawi imeneyi, flux imafunika kuti iteteze kutsekemera kwachiwiri.

4. Kuchepetsa kuthamanga kwa solder yosungunuka

Chifukwa cha mawonekedwe a thupi, chitsulo chosungunuka cha solder chidzakhala ndi zovuta zina, ndipo kuthamanga kwapamwamba kudzatsogolera ku liwiro la solder kupita kumalo otsekemera kuti akhudze kunyowetsa bwino mu ndondomeko yowotcherera, ndi ntchito ya flux pa izi. nthawi ndi kuchepetsa mavuto padziko la solder madzi, kuti wettability akhoza kwambiri bwino.