Mgbado ọkụ na-agbado agbado na-ezo aka na usoro ịgbado ọkụ nke na-achọpụta njikọ n'ibu na eletriki n'etiti nsọtụ solder ma ọ bụ ntụtụ nke ihe mgbakọ n'elu yana PCB solder pads site na-agbaze solder mado tupu ebipụtara na PCB solder pads.
1. Usoro eruba
Usoro eruba nke reflow soldering: ibipụta solder tapawa → mounter → reflow soldering.
2. Usoro njirimara
Nha nkwonkwo solder bụ njikwa.Enwere ike nweta nha ma ọ bụ ọdịdị achọrọ nke nkwonkwo solder site na nha nha nke mpempe akwụkwọ na ọnụ ọgụgụ nke mpempe akwụkwọ a na-ebipụta.
A na-etinyekarị tapawa ịgbado ọkụ site na mbipụta nchara nchara.Iji mee ka usoro ahụ dị mfe ma belata ọnụ ahịa mmepụta ihe, a na-ebipụtakarị naanị otu mpempe akwụkwọ ịgbado ọkụ maka elu ịgbado ọkụ ọ bụla.Njirimara a chọrọ ka ihe ndị dị na ihu mgbakọ ọ bụla nwee ike kesaa tapawa solder site na iji otu ntupu (gụnyere ntupu nke otu ọkpụrụkpụ na ntupu steepụ).
Igwe ọkụ reflow bụ n'ezie ọkụ ọkụ ọwara ọtụtụ okpomọkụ nke isi ọrụ ya bụ ikpo PCBA.Ngwa ndị a haziri n'elu ala (n'akụkụ B) kwesịrị imezu ihe achọrọ nrụnye, dị ka ngwugwu BGA, oke akụrụngwa na mpaghara kọntaktị pin ≤0.05mg/mm2, iji gbochie ihe ndị dị n'elu ka ọ daa mgbe ịgbado ọkụ.
Na reflow soldering, akụrụngwa na-ese n'elu kpamkpam n'elu a wụrụ awụ solder (solder nkwonkwo).Ọ bụrụ na mpe mpe akwa ka ibu karịa nha ntụtụ, okirikiri nhọrọ ukwuu dị arọ karị, na okirikiri nhọrọ ukwuu dị obere, ọ na-adịkarị mfe ịkwaga n'ihi nrụrụ asymmetric gbazere solder elu erughị ala ma ọ bụ manye ikuku na-ekpo ọkụ na-efe efe na ọkụ reflow.
N'ikwu okwu n'ozuzu, n'ihi na components ndị nwere ike imezi ọnọdụ ha site n'onwe ha, ka ibu nke nha nke pad ahụ na njedebe nke njedebe nke ịgbado ọkụ ma ọ bụ pin, ka ọrụ nhazi nke ihe ndị ahụ na-esiwanye ike.Ọ bụ ebe a ka anyị na-eji maka imewe kpọmkwem nke pads na ọnọdụ chọrọ.
Nhazi nke weld (ntụpọ) morphology dabere na omume nke ike wetting na esemokwu elu nke solder gbazere, dị ka 0.44mmqfp.Ụkpụrụ mado e biri ebi bụ cuboid oge niile.
Oge nzipu: Dec-30-2020