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Ungakhonjwa Kanjani Futhi Uphendule Ezinhlotsheni Eziyisi-6 Ze-PCB Fogging Coating Conformal Coating Defects

Uma kubhekwa izinto eziguquguqukayo ezihilelekile enqubweni yokumboza ehambisanayo (isb. ukwakheka kokumboza, i-viscosity, ukuhlukahluka kwe-substrate, izinga lokushisa, ukuxutshwa komoya, ukungcoliswa, ukuhwamuka, umswakama, njll.), izinkinga zokukhubazeka kokumboza zingase ziphakame.Ake sibheke ezinye izinkinga ezivamile ezingase ziphakame lapho kufakwa futhi ukwelapha upende, kanye nezimbangela ezingaba khona nokuthi yini okufanele uyenze ngakho.

1. Ukususa umswakama

Lokhu kubangelwa ukungcoliswa kwe-substrate okungahambisani nokugqoka.Okungenzeka kube yizigebengu izinsalela eziguquguqukayo, uwoyela ocutshungulwayo, ama-ejenti okukhipha isikhunta, namafutha ezigxivizo zeminwe.Ukuhlanza ngokuphelele i-substrate ngaphambi kokufaka i-coating kuzoxazulula le nkinga.

2. Ukudangala

Kunezimbangela eziningana ezivamile zale nkinga, lapho indawo eboshwe ilahlekelwa ukunamathela kwayo ku-substrate futhi ingaphakamisa ukusuka phezulu, imbangela eyodwa enkulu ukungcoliswa kwendawo.Ngokuvamile, uzoqaphela kuphela izinkinga ze-delamination uma ingxenye isikhiqiziwe, njengoba ngokuvamile ingabonakali ngokushesha futhi ukuhlanzwa okufanele kungaxazulula inkinga.Esinye isizathu isikhathi esinganele sokunamathela phakathi kwamajazi, i-solvent ayinaso isikhathi esifanele sokuhwamuka ngaphambi kwejazi elilandelayo, ukuqinisekisa ukuthi isikhathi esanele phakathi kwamajazi okunamathela kuyadingeka.

3. Amabhamuza

Ukungena komoya kungase kubangelwe ukunamathiswa okunganamatheli ngokulinganayo endaweni engaphansi.Njengoba umoya ukhuphuka nge-coating, i-bubble encane yomoya iyadalwa.Amanye amabhamuza ayagoqa ukuze akhe indandatho egxile emise okwe-crater.Uma u-opharetha engaqaphile kakhulu, isenzo sokuxubha singethula amabhamuza omoya enamathela, ngemiphumela echazwe ngenhla.

4. Amabhamuza omoya amaningi nama-voids

Uma ukunamathela kuwugqinsi kakhulu, noma okokunamathela kwelashwa ngokushesha okukhulu (ngokushisa), noma isincibilikisi esinathayo sihwamuka ngokushesha, konke lokhu kungabangela ingaphezulu lengubo ukuthi liqine ngokushesha okukhulu ngenkathi i-solvent isahwamuka ngaphansi, ibangele amabhamuza ngaphakathi. ungqimba olungaphezulu.

5. I-Fisheye phenomenon

Indawo encane eyindilinga ene-"crater" ephuma phakathi nendawo, evame ukubonakala ngesikhathi noma ngemuva nje kokufafaza.Lokhu kungase kubangelwe uwoyela noma amanzi avaleleke ohlelweni lomoya lwesifutho futhi kuvame uma umoya wesitolo uguqubele.Thatha izinyathelo zokuphepha ukuze ugcine uhlelo oluhle lokuhlunga ukuze ukhiphe noma yimuphi uwoyela noma umswakama ungangeni kumshini wokufafaza.

6. Ikhasi lewolintshi

Kubukeka njengekhasi lewolintshi, ukubukeka okungalingani.Futhi, kungase kube nezizathu ezihlukahlukene.Uma usebenzisa uhlelo lwe-spray, uma ukucindezela komoya kuphansi kakhulu, kuzodala i-atomization engalingani, engabangela lo mphumela.Uma ama-thinner asetshenziswa ezinhlelweni zokufutha ukuze kuncishiswe i-viscosity, ngezinye izikhathi ukukhetha okungalungile kwe-thinner kungabangela ukuthi kuhwamuke ngokushesha, kunganiki ukumboza isikhathi esanele sokusabalala ngokulinganayo.


Isikhathi sokuthumela: May-08-2023