Iinkuni zegrafiti zingacocwa njani?
Ngokubanzi, xa inkqubo yokubumba igqityiwe, ukungcola okanye iintsalela (ezithileukwakheka kweekhemikhalikwayeiipropati ezibonakalayo) zihlala zishiywa phezuumngundo wegrafayithi. Kwiintlobo ezahlukeneyo zeentsalela, iimfuno zokugqibela zokucoca zahlukile. Iiresins ezifana ne-polyvinyl chloride ziya kuvelisa igesi ye-hydrogen chloride, eya kutshabalalisa iintlobo ezininzi zentsimbi ye-graphite mold. Ezinye iintsalela zahlulwe kwizinto ezithintela ilangatye kunye nee-antioxidants, ezinokubangela ukubola kwintsimbi. Kukwakho nezinye izinto ezinombala we-pigment ezinokugqwala intsimbi, kwaye ukugqwala kunzima ukukususa. Kwanamanzi avaliweyo ngokubanzi, ukuba ashiywe phezu komphezulu we-graphite mold enganyangwanga ixesha elide, aya kubangela nomonakalo kwi-graphite mold.
Ngoko ke, i-graphite mold kufuneka icocwe njengoko kuyimfuneko ngokomjikelo wemveliso omiselweyo. Ngalo lonke ixesha i-graphite mold ikhutshwa kwi-press, ii-pores ze-graphite mold kufuneka zivulwe ukuze kususwe lonke ukungcola kunye ne-oxidized kwiindawo ezingezizo ezibalulekileyo ze-graphite mold kunye ne-template ukuze kuthintelwe ukuba ingangcolisi kancinci umphezulu kunye nemiphetho yentsimbi. Kwiimeko ezininzi, nasemva kokucoca, ezinye ii-graphite molds ezingagqunywanga okanye ezirhabaxa ziya kuphinda zibonise iimpawu zokugqwala kwakhona. Ke ngoko, nokuba kuthatha ixesha elide ukuhlamba i-graphite mold engakhuselekanga, ukubonakala kwe-rust akunakuphetshwa ngokupheleleyo.
Ngokubanzi, xa kusetyenziswa iiplastiki eziqinileyo, iiglasi, amaqokobhe e-walnut kunye nee-aluminium pellets njengezinto zokusila ezinoxinzelelo oluphezulu kunye nokucoca umphezulu wee-graphite molds, ukuba ezi zinto zokusila zisetyenziswa rhoqo okanye ngendlela engafanelekanga, le ndlela yokusila nayo iya kubangela iingxaki. Ukuxinana kwenzeka kumphezulu we-graphite mold kwaye iintsalela kulula ukuzinamathela, nto leyo ebangela ukuba iintsalela ezininzi kunye nokuguguleka, nto leyo enokubangela ukuqhekeka okanye ukudanyaza kwe-graphite mold ngaphambi kwexesha, nto leyo engathandekiyo ekucoceni i-graphite mold.
Ngoku, uninzi lwee-graphite molds zixhotyiswe ngemibhobho yomoya “ezicocayo”, ene-gloss ephezulu. Emva kokucoca nokupolisha umngxuma womoya ukuze kufikelelwe kwinqanaba lokupolisha le-SPI#A3, mhlawumbi emva kokusila okanye ukugaya, intsalela ikhutshelwa kwindawo yenkunkuma yombhobho womoya ukuze kuthintelwe intsalela ukuba inamathele kumphezulu we-rough rolling stand. Nangona kunjalo, ukuba umqhubi ukhetha ii-wash pads ezirhabaxa, ilaphu le-emery, iphepha lesanti, amatye okugaya, okanye iibrashi ezine-nylon bristles, ithusi okanye intsimbi yokugaya i-graphite mold ngesandla, kuya kubangela “ukucocwa” okugqithisileyo kwe-graphite mold.
Ngoko ke, emva kokukhangela izixhobo zokucoca ezifanelekileyo kwiimold zegrafiti kunye neendlela zokucubungula, kunye nokubhekisa kwiindlela zokucoca kunye nemijikelo yokucoca ebhalwe kwiifayile ze-archive, ngaphezulu kwe-50% yexesha lokulungisa linokulondolozwa, kwaye ukuguguleka kwemold yegrafiti kunokunciphisa ngempumelelo.
Ixesha lokuthumela: Agasti-19-2021