Ukugoba nokusonteka kwebhodi le-PCB kulula ukwenzeka esithandweni somlilo. Njengoba sonke sazi, indlela yokuvimbela ukugoba kanye warping of PCB ibhodi ngokusebenzisa isithando backwelding kuchazwe ngezansi:
1. Yehlisa ithonya lokushisa ekucindezelekeni kwebhodi le-PCB
Njengoba "izinga lokushisa" liwumthombo oyinhloko wokucindezeleka kwebhodi, inqobo nje uma izinga lokushisa lehhavini lokugeleza lehliswa noma izinga lokushisa nokupholisa ibhodi kuhhavini lokugeleza liyancipha, ukwenzeka kokugoba kwepuleti kanye ne-warping kungaba kuncishiswe kakhulu. Kodwa-ke, eminye imiphumela emibi ingase yenzeke, njenge-solder short circuit.
2. Ukusebenzisa ishidi le-Tg eliphezulu
I-Tg izinga lokushisa lokushintsha kwengilazi, okungukuthi, izinga lokushisa lapho izinto ezibonakalayo zishintsha kusuka esimweni sengilazi kuya esimweni senjoloba. Uma liphansi inani le-Tg lezinto ezibonakalayo, ibhodi liqala ukuthamba ngokushesha ngemva kokungena esithandweni sokugeleza kabusha, futhi isikhathi esisithathayo ukuze sibe isimo senjoloba ethambile Lizoba lide, futhi ukuguqulwa kwebhodi kuzoba kubi kakhulu. . Ukusebenzisa ishidi le-Tg eliphakeme kungakhuphula ikhono lalo lokumelana nengcindezi nokuguqulwa, kodwa intengo yezinto ezibonakalayo iphakeme kakhulu.
3. Khulisa ubukhulu bebhodi lesifunda
Ukuze kuzuzwe inhloso yokukhanya nokuzacisa emikhiqizweni eminingi ye-elekthronikhi, ukujiya kwebhodi kushiye u-1.0mm, 0.8mm, noma u-0.6mm. Ubukhulu obunjalo kufanele bugcine ibhodi lingaguquki ngemva kwesithando somlilo sokugeleza kabusha, okuyinto enzima ngempela. Kunconywa ukuthi uma kungekho mfuneko yokukhanya nokuqina, ubukhulu bebhodi kufanele bube ngu-1.6mm, okunganciphisa kakhulu ingozi yokugoba nokuguqulwa kwebhodi.
4. Yehlisa usayizi webhodi lesekhethi futhi unciphise inani lamaphazili
Njengoba iningi lama-reflow furnaces lisebenzisa amaketanga ukuze liqhubele phambili ibhodi lesifunda, ubukhulu bebhodi lesifunda liyoba likhulu ngenxa yesisindo salo, ukubola kanye nokuguqulwa kwesithando somlilo, ngakho-ke zama ukubeka uhlangothi olude lwebhodi lesifunda. njengomphetho webhodi. Eketheni lesithando somlilo sokugeleza, ukucindezeleka nokuguqulwa okubangelwa isisindo sebhodi lesifunda kungancishiswa. Ukwehliswa kwenani lamaphaneli nakho kusekelwe kulesi sizathu. Okusho ukuthi, lapho udlula isithando somlilo, zama ukusebenzisa unqenqema oluncane ukuze udlule isiqondiso sesithando somlilo ngangokunokwenzeka ukuze uzuze okuphansi kakhulu Inani lokuguqulwa kokucindezeleka.
5. I-tray yesithando somlilo esetshenzisiwe
Uma izindlela ezingenhla zinzima ukufeza, okokugcina ukusebenzisa isithwali sokugeleza kabusha/isifanekiso ukuze kuncishiswe inani lokuguqulwa. Isizathu sokuthi umthwali we-reflow / ithempulethi inganciphisa ukugoba kwepuleti kungenxa yokuthi kungakhathaliseki ukuthi ukunwetshwa okushisayo noma ukugoqa okubandayo, kuthenjwa ukuthi Ithreyi ingabamba ibhodi lesifunda futhi ilinde kuze kube yilapho izinga lokushisa lebhodi lesifunda liphansi kune-Tg. value bese uqala ukuqina futhi, futhi ungagcina nosayizi wengadi.
Uma i-pallet yongqimba olulodwa ingakwazi ukunciphisa ukuguqulwa kwebhodi lesifunda, isembozo kufanele sengezwe ukuze ubambe ibhodi lesifunda ngamaphalethi aphezulu naphansi. Lokhu kunganciphisa kakhulu inkinga yokuguqulwa kwebhodi lesifunda ngokusebenzisa isithando somlilo sokugeleza kabusha. Nokho, leli threyi leziko libiza kakhulu, futhi umsebenzi wezandla uyadingeka ukuze ubeke futhi ugaywe kabusha amathreyi.
6. Sebenzisa Umzila esikhundleni sebhodi elingaphansi le-V-Cut
Njengoba i-V-Cut izobhubhisa amandla esakhiwo sephaneli phakathi kwamabhodi wesifunda, zama ukungasebenzisi i-V-Cut sub-board noma ukunciphisa ukujula kwe-V-Cut.