Zvivako zvesimbiZvinoshandiswa zvakanyanya muzvivakwa zvemazuva ano, mabhiriji, uye mafekitori emaindasitiri nekuda kwesimba razvo guru, huremu hushoma, uye kuvaka kwenguva pfupi. Zvichienzaniswa nezvivakwa zvekongiri zvechinyakare, zvivakwa zvesimbi zvinobvumira nzvimbo dzakakura, mafomu ekuvaka anochinjika, uye kuendeswa kwepurojekiti nekukurumidza. Zvakanakira izvi zvinoita kuti simbi ive chinhu chakanakira zvivakwa zvikuru zveveruzhinji, nzvimbo dzekufambisa zvinhu, uye maworkshop emaindasitiri. Zvisinei, simbi inonzwawo zvakanyanya ngura yemagetsi kana yaiswa munzvimbo dzechisikigo. Hunyoro, okisijeni, munyu, uye tsvina yemaindasitiri zvinogona kukurumidza kukonzera ngura. Ngura haingokanganisi chitarisiko chechivako chete asiwo inoderedza chikamu chinoshanda chesimbi. Nekufamba kwenguva, maitiro aya anotyisidzira zvakananga kuchengetedzeka kwechivako uye kugara kwenguva refu. Nechikonzero ichi, kubviswa kwengura kwesainzi uye kurapwa kwekurwisa ngura matanho akakosha muinjiniya yezvivakwa zvesimbi.
Kugadzirira Pamusoro: Hwaro hweKudzivirira Kuora
Kubvisa ngura pamusoro pevhu ndiyo danho rekutanga uye rakakosha mune chero sisitimu yekudzivirira ngura. Hunhu hwayo hunosarudza zvakananga kunamira uye hupenyu hwekushanda kwependi inotevera. Kana ngura, chikero chemugayo, kana oiri zvikaramba zviri pamusoro pesimbi, kunyangwe sisitimu yependi yakanakisisa ichakundikana nguva isati yakwana.
Mukugadzirwa kwemaindasitiri, kubvisa ngura nehasha kana kupfura nepfuti ndiyo nzira inonyanya kushandiswa yekubvisa ngura. Zvidimbu zvinokurumidza kupwanya zvinokanganisa pamusoro pesimbi uye zvinobvisa chiyero cheoxide, ngura, uye tsvina. Mapurojekiti mazhinji anoda chiyero chekuchena kwepamusoro cheSa 2.5. Padanho iri, pamusoro pesimbi panoratidza ruvara rwesimbi rwakafanana pasina ngura kana chiyero chinoonekwa, uye ine mwero wakati wekuomarara. Iyi rough profile inovandudza zvakanyanya simba rekubatanidza pakati pesimbi nependi.
Kuchenesa maturusi nemaoko uye nemagetsi kunonyanya kushandiswa panzvimbo dzekuvaka kana munzvimbo dzisingagoneki kuputira nemagetsi. Vashandi vanovimba nemabhurashi ewaya, ma angle grinders, kana sanding discs kubvisa ngura. Nzira iyi haishande zvakanaka uye haishande zvakanaka. Inowanzo shanda zvakanaka paSt 2 kana St 3. Kunyangwe nzira iyi isingakwanise kuenzana nemhando yekuputira, ichiri kuita basa rakakosha mukugadzirisa nekugadzirisa kwenzvimbo.
Masisitimu ekuputira: Nzira yekudzivirira huru
Panguva yekugadzira nekugadzirisa zvikamu zvesimbi, masisitimu ekuputira ane jira rakawanda anowanzo shandiswa. Masisitimu aya anowedzera hupenyu hwebasa kuburikidza nekubatanidzwa kwezvidziviriro zvemuviri uye nzira dzekudzivirira makemikari.
Sisitimu yekuputira yakajairika ine primer, intermediate coat, uye topcoat. Primer iyi inopa nzira yekutanga yekudzivirira kubva mukuora uye inoita kuti irambe yakasimba kune substrate yesimbi. Epoxy zinc-rich primers inoshandiswa zvakanyanya padanho iri. Zinc powder iri mukati mekuputira inoshanda seanode yechibayiro. Kuburikidza ne electrochemical action, zinc inoramba ichiora uye inodzivirira simbi iri pasi kubva mukuora.
Pendi yepakati inonyanya kuwedzera ukobvu hwejira uye inowedzera kushanda zvakanaka kwejira. Pendi yesimbi inonzi epoxy micaceous iron oxide isarudzo yakajairika. Chimiro chayo chakaita seplate chinodzivirira kupinda kwemvura neokisijeni. Izvi zvinovandudza huwandu hwejira uye zvinoderedza ngura.
Iyo topcoat inotarisa pakudzivirira kwemamiriro ekunze uye chitarisiko. Zvikamu zvesimbi zvakavezwa zvinowanzoshandisa polyurethane kana fluorocarbon topcoats. Izvi zvinopa kudzivirira kwakanaka kumwaranzi ye ultraviolet. Zvinodzivirira kubva pachoko uye kupera simba uku zvichipa ruvara rwekupedzisira rwechivakwa. Iyo topcoat yemhando yepamusoro inochengetedza dziviriro uye runako kwemakore mazhinji.
Vagadziri vane ruzivo vanowanzoisa machira ekuputira nekungwarira kwakanyanya. Semuenzaniso, Harbin Dongan Building Sheets Company inoshandisa nzira dzakawanda dzekupfapfaidza panguva yekugadzira zvikamu zvesimbi kuti ive nechokwadi chekuti firimu rakaoma rine ukobvu hwema microns angangoita 75. Iyi nzira inovandudza zvakanyanya kuramba ngura uye inowedzera hupenyu hwebasa.
Matanho Akakosha Ekudzivirira Kuora
Kune zvivakwa zviri munzvimbo dzakaoma zvakanyanya kana nzvimbo dzakaoma kugadzirisa, nzira dzekudzivirira dzepamusoro dzinowanzo diwa.
Kuisa simbi mu "hot-dip galvanizing" kunosanganisira kunyudza zvinhu zvesimbi zvakacheneswa mu "melt zinc" panopisa anenge 450°C. Maitiro aya anoumba "gobvu" uye dense zinc-iron alloy layer pamusoro. Kuisa simbi mu "hot-dip galvanizing" kunodzivirira zvakanyanya munzvimbo dziri kumahombekombe, munzvimbo dzinopfapfaidza munyu, uye munzvimbo dzine hunyoro hunogara kwenguva refu.
Simbi inogadzirisa mamiriro ekunze inomiririra imwe mhinduro inoshanda. Nekuwedzera zvinhu zvinosanganisa simbi zvakaita semhangura, chromium, uye nickel, simbi iyi inoumba ngura yakakora uye yakasimba pamusoro payo. Ruti urwu runodzivirira ngura zvakare uye runoita kuti "ngura idzivirire" pasina mamwe machira.
Mukupedzisa, kubvisa ngura zvinobudirira uye kudzivirira ngura zvakakosha pakuchengetedza, kugara kwenguva refu, uye kutaridzika zvakanaka kwezvivakwa zvesimbi. Kugadzirira kwakakodzera pamusoro, masisitimu ekuputira akagadzirwa zvakanaka, uye matanho akakodzera pamwe chete zvinoita kuti zvivakwa zvesimbi zvishande zvakanaka muhupenyu hwazvo hwese hwazvinenge zvichitarisirwa.
Nguva yekutumira: Ndira-23-2026