Menene Dalilan Solder Beading Samar da Lokacin Sarrafa SMT?

Wani lokaci za a sami wani mummunan aiki sabon abu a cikin aiwatar daInjin SMT, Tin bead yana daya daga cikinsu, don magance matsalar, dole ne mu fara sanin musabbabin matsalar.Solder beading yana a cikin solder manna slump ko a kan aiwatar da latsa daga cikin kushin faruwa.Lokacinreflow tandasoldering, solder manna aka ware daga babban ajiya da kuma tarawa da wuce haddi solder manna daga wasu pads, ko dai fitowa daga gefen bangaren jiki zuwa samar da manyan beads, ko saura a karkashin bangaren.Ana iya kaucewa kawar da ƙullun kwano har zuwa yiwuwar ta hanyar cirewa kai tsaye, a cikin tsarin samarwa don kula da hankali.Mai zuwa shine don tantance waɗanne sharuɗɗan da za su samar da beading solder:

I. Karfe raga
1. Buɗe ragar ƙarfe kai tsaye daidai da girman buɗaɗɗen kushin zai haifar da al'amarin tin bead a cikin aikin sarrafa facin.
2. Idan kaurin gidan karfen ya yi kauri sosai, hakanan yana iya haifar da rugujewar man da ake saida shi, wanda kuma zai haifar da gwangwani.
3. Idan matsi nakarba da wuri injiYa yi tsayi da yawa, za a iya fitar da man siyar cikin sauƙi zuwa madaidaicin juriya da ke ƙasa da abun, kuma manna mai siyarwar zai narke da gudu a kewaye da abin don samar da beads ɗin solder yayin tanda.

II.Manna mai siyarwa
1. Solder manna ba tare da sarrafa zafin jiki na dawo da zafin jiki a matakin preheating zai fantsama sabon abu don samar da kwano beads.
2. The karami da barbashi size na karfe foda a cikin solder manna, da ya fi girma da overall surface area na solder manna, wanda take kaiwa zuwa mafi girma hadawan abu da iskar shaka mataki na lafiya foda, don haka sabon abu na solder beads ne intensified.
3. A mafi girma da hadawan abu da iskar shaka digiri na karfe foda a cikin solder manna, mafi girma da karfe foda bonding juriya a lokacin waldi, da solder manna da kushin da SMT aka gyara ba sauki infiltrate, sakamakon a rage solderability.
4. Adadin juzu'i da adadin kuzarin aiki ya yi yawa, wanda hakan zai haifar da rugujewar fakitin solder da kwano.Lokacin da aikin juyi bai isa ba, ɓangaren oxidized ba za a iya cire shi gaba ɗaya ba, wanda kuma zai haifar da ƙwanƙwasa kwano a cikin sarrafa masana'antar sarrafa faci.
5. Metal abun ciki a cikin ainihin aiki na tin manna ne kullum 88% zuwa 92% na karfe abun ciki da kuma taro rabo, girma rabo na game da 50%, kara karfe abun ciki na iya sa karfe foda tsari zama mafi a hankali, don haka da cewa. yana da sauƙin haɗuwa lokacin narkewa.