Iyo solder mask kuratidzwa uye maitiro ekusimudzira mune Pcb bhodhi kugadzira maitiro iPCB board ine solder mask mushure mekudhindwa kwescreen. Ivhara mapedhi paPCB board ne diazo firimu kuitira kuti irege kuvhenekerwa ne ultraviolet mwenje panguva yekuratidzwa, uye solder kuramba kudzivirira layer inonamira zvakanyanya kuPCB pamusoro mushure me ultraviolet irradiation, uye mapadhi haana kuburitswa. kune ultraviolet chiedza. Kuvheneka kwemwenje kunogona kuburitsa mapedhi emhangura kuitira kuti mutobvu nemarata zvigone kuiswa panguva yekupisa kwemhepo.

Chinangwa chekuratidzwa kwebhodhi redunhu ndechekuisa uye kuvharira ne ultraviolet mwenje. Chikamu chakajeka chemufirimu uye iyo yakaoma firimu inopinda optical polymerization reaction, kureva, pasi pe ultraviolet chiedza irradiation, photoinitiator inotora simba rechiedza uye inoparara kuva mahara radicals, uye mahara radicals anotanga chiedza zvakare. Iyo polymerized monomer inopinda mupolymerization uye muchinjika-inobatanidza maitiro, uye inoumba macromolecular chimiro chisinganyungudika mukunyungudutsa alkali mhinduro mushure mekuita. Iyo firimu ine brown, ultraviolet mwenje haigone kupinda, uye iyo firimu haigone kuita optical polymerization neyakaomeswa firimu rinoenderana. Exposure inowanzoitwa mune otomatiki kaviri-mativi ekuratidzira muchina.

Kune marudzi maviri ekuratidzwa: dunhu kuratidzwa uye solder mask exposure. Basa racho ndere kurapa nzvimbo yeradiation yenzvimbo kuburikidza ne ultraviolet chiedza irradiation, uye wozoigadzira kuti iite dhipatimendi redunhu kana solder resist pattern.

Iyo nzira yekuratidzwa kwedunhu ndeyekuisa photosensitive firimu pane copper clad board, wobva waiisa pamwe chete neyedunhu pateni isina kunaka uye kuifumura nemirairo ye ultraviolet. Iyo photosensitive firimu yakavhenekerwa nemirairo yeultraviolet inozosangana nepolymerization reaction. Iyo photosensitive firimu pano inogona kuramba Na2CO3 isina simba alkali panguva yekusimudzira. Mushonga wacho unoshambidzwa, uye chikamu chisinganzwisiswi chichashambidzwa panguva yekuvandudza. Nenzira iyi, chimiro chedunhu pane firimu rakashata rinobudirira kuendeswa kune mhangura yakavhara bhodhi;

Maitiro ekuisa masiki kuratidzwa kwakafanana: shandisa photosensitive pendi pabhodhi redunhu, wobva wavhara nzvimbo dzinoda kutengeswa panguva yekuratidzwa, kuitira kuti mapedhi aonekwe mushure mekuvandudzwa.