N'ime usoro mmepụta nke SMT, ọ na-adịkarị mkpa iji SMD nrapado, solder paste, stencil na ihe enyemaka ndị ọzọ, ihe ndị a na-enye aka na SMT dum usoro mmepụta mgbakọ, àgwà ngwaahịa, mmepụta mmepụta na-arụ ọrụ dị mkpa.
1. Oge nchekwa (Shelf Life)
N'okpuru ọnọdụ ndị a kapịrị ọnụ, ihe ma ọ bụ ngwaahịa ahụ ka nwere ike imezu ihe achọrọ teknụzụ ma jikwaa arụmọrụ kwesịrị ekwesị nke oge nchekwa.
2. Oge ntinye (oge ọrụ)
Nchikota mgbawa, tapawa ihe eji eme ihe tupu ikpughe na gburugburu ebe a kapịrị ọnụ ka nwere ike idowe kemịkalụ na ihe anụ ahụ akọwapụtara nke oge kacha ogologo.
3. Viscosity (Viscosity)
Ngwunye mgbawa, tapawa solder na ntapu ebumpụta ụwa nke ihe nrapado nke ndobe igbu oge.
4. Thixotropy (Ratio Thixotropy)
Nchikota mgbawa na tapawa solder nwere njirimara nke mmiri mgbe a na-agbanye ya n'okpuru nrụgide, na ngwa ngwa ghọọ plastik siri ike mgbe extrusion ma ọ bụ kwụsị itinye nrụgide.A na-akpọ njirimara a thixotropy.
5. Ntughari (Slump)
Mgbe mbipụta nkengwa nbipute stenciln'ihi ike ndọda na elu esemokwu na okpomọkụ ịrị elu ma ọ bụ na-adọba ụgbọala oge dị ogologo na ihe ndị ọzọ mere site na elu Mbelata, ala ebe gafere kpọmkwem ókè nke slump onu.
6. Na-agbasa
Ebe dị anya na nrapado na-agbasa na ọnụ ụlọ okpomọkụ mgbe ekesasịrị.
7. Adhesion (Tack)
The size nke adhesion nke solder mado na components na mgbanwe nke adhesion ya na mgbanwe nke oge nchekwa mgbe ebi nke solder mado.
8. Wetting (wetting)
The wụrụ awụ solder na ọla kọpa n'elu na-etolite a edo, ire ụtọ na-adịghị agbajikwa ala nke solder mkpa oyi akwa.
9. Tapawa ihe na-ere ere adịghị ọcha (Tapawa ihe na-ere ere adịghị ọcha)
Tapawa solder nke nwere naanị nchọta ihe fọdụrụ na-ere ihe na-adịghị emerụ ahụ mgbe a gbachara ya na-ehichaghị PCB.
10. Tapawa ihe na-ere ọkụ dị ala (Paste Okpomọkụ dị ala)
Solder mado na agbaze okpomọkụ ala karịa 163 ℃.
Oge nzipu: Mar-16-2022