SMT reflow ovenna nitrogen (N2) bụ ọrụ kacha mkpa na mbenata welding elu oxidation, melite wettability nke ịgbado ọkụ, n'ihi na nitrogen bụ ụdị inert gas, ọ dịghị mfe imepụta ogige na metal, ọ nwekwara ike ebipụ oxygen na ikuku. na kọntaktị metal na elu okpomọkụ ma mee ngwa ngwa mmeghachi omume oxidation.
Mbụ, ụkpụrụ na nitrogen nwere ike melite SMT weldability dabeere n'eziokwu na elu esemokwu nke solder n'okpuru nitrogen gburugburu ebe obibi bụ ihe na-erughị nke ekpughere ikuku gburugburu ebe obibi, nke mma na fluidity na wettability nke solder.
Nke abuo, nitrogen ebelata solubility nke oxygen na mbụ ikuku na ihe nwere ike imerụ welding elu, ukwuu mbenata oxidation nke elu okpomọkụ solder, karịsịa na mma nke abụọ n'akụkụ backwelding àgwà.
Nitrogen abụghị panacea maka PCB oxidation.Ọ bụrụ na elu nke akụrụngwa ma ọ bụ bọọdụ sekit na-ekpo ọkụ nke ukwuu, nitrogen agaghị eme ka ọ dịghachi ndụ, nitrogen na-abakwa uru naanị maka obere oxidation.
Uru nkesolder reflow ovennwere nitrogen:
Belata oxidation ọkụ
Melite ikike ịgbado ọkụ
Kwalite solderability
Belata ọnụego oghere.N'ihi na steepụ ma ọ bụ solder pad oxidation na-ebelata, eruba nke solder ka mma.
Ọdịmma nkeIgwe na-ere ahịa SMTnwere nitrogen:
ọkụ
Na-abawanye ohere nke ọgbọ ili
Capillarity emelitere (mmetụta wick)
Oge nzipu: Ọgọst-24-2021