Intangiriro kuri Maskeri

Ikibaho cyo kurwanya ni soldermask, bivuga igice cyumuzunguruko ugomba gusiga irangi amavuta yicyatsi. Mubyukuri, iyi masike yo kugurisha ikoresha umusaruro utari mwiza, bityo rero nyuma yuburyo imiterere ya masike yagurishijwe yashizwe ku kibaho, mask yo kugurisha ntabwo yashushanyijeho amavuta yicyatsi, ariko uruhu rwumuringa ruragaragara. Mubisanzwe kugirango twongere umubyimba wuruhu rwumuringa, mask yo kugurisha ikoreshwa mukwandika imirongo kugirango ikureho amavuta yicyatsi, hanyuma amabati yongerwamo kugirango yongere ubunini bwinsinga z'umuringa.

Ibisabwa kubigurisha mask

Mask yo kugurisha ningirakamaro cyane mugucunga inenge zo kugurisha. Abashushanya PCB bagomba kugabanya intera cyangwa icyuho cyikirere gikikije padi.

Nubwo abajenjeri benshi batunganya ibintu bahitamo gutandukanya ibintu byose biri ku kibaho hamwe na mask yo kugurisha, umwanya wa pin hamwe nubunini bwa padi yibice byiza bizakenera kwitabwaho bidasanzwe. Nubwo gufungura masike yo gufungura cyangwa idirishya ridafite zone kumpande enye za qfp birashobora kwemerwa, birashobora kugorana cyane kugenzura ibiraro byabagurisha hagati yipine yibigize. Kuri mask yo kugurisha ya bga, ibigo byinshi bitanga mask yo kugurisha idakora ku makarito, ariko ikubiyemo ibintu byose biri hagati yamakariso kugirango birinde ibiraro byabagurisha. Hafi yubuso bwa PCBs butwikiriwe na mask yo kugurisha, ariko niba umubyimba wa mask yagurishijwe urenze 0.04mm, birashobora kugira ingaruka kumikoreshereze ya paste. Ubuso bwa PCBs, cyane cyane abakoresha ibice byiza, bisaba mask yo kugurisha amafoto make.

Umusaruro w'akazi

Ibikoresho bya solder bigomba gukoreshwa binyuze mumazi atose cyangwa firime yumye. Ibikoresho byumye bya firime yumye yatanzwe mubugari bwa 0.07-0.1mm, birashobora kuba byiza kubicuruzwa bimwe byo hejuru, ariko ibi bikoresho ntabwo byemewe kubisabwa hafi. Ibigo bike bitanga firime zumye zoroheje bihagije kugirango zuzuze ibipimo byiza byikibuga, ariko hariho ibigo bike bishobora gutanga ibikoresho byamafoto yo kugurisha ibicuruzwa. Mubisanzwe, gufungura mask yo kugurisha bigomba kuba binini 0.15mm kurenza padi. Ibi bituma habaho icyuho cya 0.07mm kuruhande rwa padi. Ibikoresho byo hasi-byoroheje bifotora kugurisha ibikoresho bya mask nubukungu kandi mubisanzwe byerekanwe kubuso bwububiko bwa porogaramu kugirango bitange neza ingano nubunini.

Intangiriro yo kugurisha

Igice cyo kugurisha gikoreshwa mugupakira SMD kandi gihuye nudupapuro twibigize SMD. Mu gutunganya SMT, isahani yicyuma isanzwe ikoreshwa, kandi PCB ihuye nibice bigize ibice irakubitwa, hanyuma paste yo kugurisha igashyirwa ku cyuma. Iyo PCB iri munsi yisahani yicyuma, paste yuwagurishije iratemba, kandi iri kuri buri padi Irashobora kwanduzwa nuwagurishije, kubwibyo mubisanzwe mask yo kugurisha ntigomba kuba nini kurenza ubunini bwa padi, byaba byiza bitarenze cyangwa bingana na ingano ya padi.

Urwego rusabwa rusa nkurwo hejuru yubuso bwimiterere, kandi ibyingenzi nibyingenzi:

1. BeginLayer: ThermalRelief na AnTIPad nini 0.5mm kurenza ubunini busanzwe bwa padi isanzwe

2. EndLayer: ThermalRelief na AnTIPad nini 0.5mm kurenza ubunini busanzwe bwa padi isanzwe

3. DEFAULTINTERNAL: urwego rwagati

Uruhare rwabagurisha mask na flux layer

Igicuruzwa cya masike igurisha cyane cyane irinda umuringa wumuringa wibibaho byumuzunguruko guhita uhura nikirere kandi bigira uruhare mukurinda.

Igice cyo kugurisha gikoreshwa mugukora ibyuma byuruganda rukora ibyuma, kandi inshundura yicyuma irashobora gushyira neza paste yuwagurishije kumapaki yamashanyarazi agomba kugurishwa mugihe cyo gutobora.

Itandukaniro riri hagati yo kugurisha PCB na mask yo kugurisha

Ibice byombi bikoreshwa mugurisha. Ntabwo bivuze ko umwe yagurishijwe undi ni amavuta yicyatsi; ariko:

1. Maskeri yo kugurisha bisobanura gufungura idirishya kumavuta yicyatsi ya masike yose yagurishijwe, ikigamijwe nukwemerera gusudira;

2. Muburyo busanzwe, agace katagira mask yo kugurisha kagomba gusiga irangi ryamavuta yicyatsi;

3. Igice cyo kugurisha gikoreshwa mugupakira SMD.