Ukuhlaziywa kwezinhlobo ezintathu ze-PCB stencil technology

Ngokwenqubo, i-pcb stencil ingahlukaniswa ngezigaba ezilandelayo:

I-stencil ye-PCB

1. I-stencil yokunamathisela ye-solder: Njengoba igama liphakamisa, isetshenziselwa ukuxubha unamathisele we-solder.Baza izimbobo ocezwini lwensimbi oluhambisana namaphedi ebhodi le-pcb.Bese usebenzisa i-solder paste ukuze unamathisele ebhodini le-PCB ngokusebenzisa i-stencil.Lapho uphrinta unamathisele we-solder, sebenzisa unamathisele we-solder phezulu kwe-stencil, kuyilapho ibhodi lesifunda libekwe ngaphansi kwe-stencil, bese usebenzisa i-scraper ukuze usule unamathisele we-solder ngokulinganayo emigodini ye-stencil (i-solder paste izocindezelwa inetha lensimbi. yehla ngemeshi bese uvala ibhodi lesekhethi).Namathisela izingxenye ze-SMD, futhi i-reflow soldering ingenziwa ngokufanayo, futhi izingxenye ze-plug-in zithengiswa ngesandla.

2. I-stencil yepulasitiki ebomvu: Ukuvula kuvulwa phakathi kwamaphedi amabili wengxenye ngokusho kobukhulu nohlobo lwengxenye.Sebenzisa ukusabalalisa (ukukhipha kuwukusebenzisa umoya ocindezelwe ukukhomba ingcina ebomvu ku-substrate ngekhanda elikhethekile lokukhipha) ukuze ukhombe ingcina ebomvu ebhodini le-PCB nge-mesh yensimbi.Bese umaka izingxenye, futhi ngemva kokuba izingxenye zinamathiselwe ngokuqinile ku-PCB, xhuma izingxenye ze-plug-in bese udlulisa i-wave soldering ndawonye.

3. I-stencil yezinqubo ezimbili: Uma i-PCB idinga ukuxutshwa nge-solder paste neglue ebomvu, kuzomele kusetshenziswe i-stencil yezinqubo ezimbili.I-double-process stencil yakhiwe ngama-stencil amabili, i-laser stencil eyodwa evamile kanye ne-steped stencil eyodwa.Unganquma kanjani ukuthi ungasebenzisa i-stencil ene-steped noma iglue ebomvu yokunamathisela i-solder?Okokuqala qonda ukuthi ukuxubha unamathisele we-solder noma iglue ebomvu kuqala.Uma i-solder paste isetshenziswa kuqala, khona-ke i-stencil yokunamathisela ye-solder yenziwa i-stencil ye-laser evamile, futhi i-stencil yeglue ebomvu yenziwa i-stencil enezinyathelo.Uma i-glue ebomvu isetshenziswa kuqala, khona-ke i-stencil yeglue ebomvu yenziwa i-laser stencil evamile, futhi i-solder pastencil yenziwa i-stencil enezinyathelo.