Solder phala kusindikiza njira ya miniaturized zigawo zikuluzikulu 3-2

Kuti timvetsetse zovuta zomwe zimabweretsedwa ndi magawo ang'onoang'ono kuti asindikize phala la solder, choyamba tiyenera kumvetsetsa kuchuluka kwa malo osindikizira a stencil (Area Ratio).

Kuti phala la solder lisindikizidwe la mapepala ang'onoang'ono, mapepala ang'onoang'ono ndi kutseguka kwa stencil, zimakhala zovuta kwambiri kuti phala la solder lilekanitse ndi khoma la bowo la stencil. zofotokozera:

1. Njira yowonongeka kwambiri ndiyo kuchepetsa makulidwe a zitsulo zazitsulo ndikuwonjezera chiwerengero cha malo otsegulira.Monga momwe tawonetsera m'chithunzichi, mutatha kugwiritsa ntchito chitsulo chochepa kwambiri chachitsulo, kutsekemera kwa mapepala a zigawo zing'onozing'ono ndi zabwino.Ngati gawo lapansi lopangidwa lilibe zigawo zazikuluzikulu, ndiye kuti iyi ndiyo njira yosavuta komanso yothandiza kwambiri.Koma ngati pali zigawo zikuluzikulu pa gawo lapansi, zigawo zazikuluzikulu sizigulitsidwa bwino chifukwa cha malata ochepa.Chifukwa chake ngati ndi gawo losakanikirana kwambiri lomwe lili ndi zigawo zazikulu, timafunikira mayankho ena omwe ali pansipa.

1. Gwiritsani ntchito ukadaulo watsopano wa zitsulo zachitsulo kuti muchepetse kufunikira kwa chiŵerengero cha zotsegula mu stencil.

1) FG (Fine Grain) stencil yachitsulo

FG zitsulo pepala lili ndi mtundu wa niobium chinthu, amene angathe kuyenga njere ndi kuchepetsa tilinazo kutenthedwa ndi kupsa mtima brittleness chitsulo, ndi kusintha mphamvu.Khoma lazitsulo la laser-cut FG chitsulo ndi loyera komanso losalala kuposa lachitsulo wamba 304, lomwe limathandizira kugwetsa.Malo otsegulira chiŵerengero cha ma mesh achitsulo opangidwa ndi FG chitsulo pepala akhoza kukhala otsika kuposa 0,65.Poyerekeza ndi mauna achitsulo 304 okhala ndi chiŵerengero chofanana chotsegulira, mauna achitsulo a FG amatha kukhala okhuthala pang'ono kuposa mauna achitsulo a 304, potero amachepetsa chiopsezo cha malata ochepera pazinthu zazikulu.