Doro nechinwiwa chinogona imhando yekurongedza chikafu, uye haifanire kuwedzera zvakanyanya kumutengo wezviri mukati. Vagadziri vezvigoni vanogara vachitsvaga nzira dzekuita kuti pasuru yacho idhure. Kamwe gaba rakagadzirwa muzvidimbu zvitatu: muviri (kubva papepa rakatsetseka) uye migumo miviri. Ikozvino magaba edoro nezvinwiwa akawanda magaba ane zvidimbu zviviri. Muviri unogadzirwa kubva pachidimbu chesimbi nenzira inozivikanwa sekudhirowa uye kuaina pamadziro.
Iyi nzira yekuvaka inobvumira simbi yakatetepa kuti ishandiswe uye gaba rine simba guru chete kana razadzwa nechinwiwa checarbonated uye chavharwa. Spin-necking inochengetedza simbi nekudzikisa dhayamita yemutsipa. Pakati pa1970 na1990, midziyo yedoro neyezvinwiwa yakava 25% yakareruka. MuUSA, uko aruminiyamu yakachipa, magaba mazhinji edoro nezvinwiwa anogadzirwa nesimbi iyoyo. MuEurope, tinplate inowanzova yakachipa, uye makani akawanda anogadzirwa neizvi. Doro remazuva ano uye chinwiwa tinplate ine yakaderera tin zviri pamusoro, iwo makuru mabasa erata ari ekuzora nekuzora (mukudhirowa). Saka lacquer ine yakanakisa kudzivirira zvivakwa inodiwa, kuti ishandiswe pahuremu hwejasi (6-12 µm, zvinoenderana nerudzi rwesimbi).
Kugadzira-kugona kune hupfumi chete kana magaba achigona kugadzirwa nekukurumidza. Mamwe 800-1000 makani paminiti anozogadzirwa kubva mumutsara wekuputira, aine miviri nemigumo yakavharwa zvakasiyana. Miviri yedoro nemagaba ezvinwiwa inoiswa lacquered mushure mekugadzirwa uye kuderedzwa. Iko kukurumidza kushandisa kunowanikwa nekuputika kupfupi kwepfapfaidzo isina mweya kubva papfumo rakamisikidzwa nechepakati pepakavhurika magumo egaba rakachinjika. Dhongi rinogona kunge rakamira kana kuiswa mugaba robva rabviswa. Gaba rinobatwa muchuck uye rinotenderedzwa nekukasira panguva yekupfapfaidza kuti riwane rakanyanya yunifomu coating inogoneka. Coating viscosities inofanira kunge yakaderera zvikuru, uye yakasimba inenge 25-30%. Chimiro chiri nyore, asi zvemukati zvinoporeswa nemhepo inopisa inopisa, mumarongwa akatenderedza 3 min pa200 ° C.
Carbonated soft drinks ane acidic. Kupokana nekuora nezvigadzirwa zvakadaro zvinopihwa nekupfeka senge epoxy-amino resin kana epoxy-phenolic resin system. Doro harina hukasha kuzadza chigaba, asi kunaka kwaro kunogona kukanganiswa zviri nyore nekunhonga simbi kubva mugaba kana nekutsvaga zvinhu zvakatorwa kubva mulacquer, zvekuti inodawo akafanana emhando yepamusoro emukati lacquers.
Ruzhinji rweaya machira akave akabudirira kuchinjirwa kumvura-inotakurwa necolloidally yakapararira kana emulsion polymer masisitimu, kunyanya pane iri nyore substrate kuchengetedza, aluminium. Maji-based coatings akadzikisa mutengo wakazara uye akadzikisa huwandu hwekunyungudutsa hunofanira kuraswa ne-shure-kupisa kudzivirira kusvibiswa. Mazhinji masisitimu akabudirira anobva pane epoxy-acrylic copolymers ane amino kana phenolic crosslinkers.
Ikoko kunoramba kuine kufarira kwekutengeserana mu electrodeposition yemvura-based lacquers mudoro uye zvinwiwa magaba. Maitiro akadai anodzivirira kukosha kwekushandisa mumajasi maviri, uye anogona kukwanisa kupa machira asina kukanganisa anopokana nezviri mukati megaba pazasi yakaoma firimu uremu. Mumvura yakapfapfaidza machira, zvinonyungudutsa zviri pasi pe10-15% zviri kutsvagwa.
Nguva yekutumira: Zvita-09-2022