Simbi yakabatiswa yagara iri ibwe repakona mukuvaka, kugadzira, uye kwakasiyana maindasitiri ekushandisa nekuda kwekuwedzera kwayo kuramba ngura. Maitiro eku galvanization anosanganisira kupfekedza simbi ine inodzivirira layer ye zinc kudzivirira kuita ngura. Zvisinei, mubvunzo unowanzovapo unomuka wokuti: Simbi dzakaita ngura dzinoita ngura here? Kunzwisisa zvimiro zvesimbi yakashongedzwa kwakakosha kune mainjiniya, vagadziri vezvivakwa, uye nyanzvi dzeindasitiri vanovimba nekusimba kwayo. Ichi chinyorwa chinotarisa mukuoma kwesimbi yemarara, ichiongorora kusaora kwayo, mamiriro ayo angaite ngura, uye maitiro akanakisa ekushandiswa kwayo munzvimbo dzakasiyana siyana. Nekuongorora misimboti ye galvanization uye kushanda kwayo, isu tine chinangwa chekupa ongororo yakazara yeichi chinhu chinoshandiswa zvakanyanya.
Kune avo vanofarira ruzivo rwakadzama uye mashandisirwo e Galvanized Steel , kunzwisisa maitiro ayo mumamiriro ezvinhu akasiyana kwakakosha pakuita zvisarudzo zvine ruzivo mukusarudza zvinhu.
Iyo Galvanization Maitiro uye Iyo Dziviriro Mechanism
Kuti tinzwisise kuti simbi inogona kuita ngura here, zvakakosha kuti titange tanzwisisa mabatirwo acho pachezvayo. Galvanization inowanzobatanidza kunyudza simbi mubhavhu rezinc yakanyungudutswa patembiricha yakatenderedza 450°C (842°F), nzira inozivikanwa sehot-dip galvanizing. Iyo zinc coating inoshanda sechivharo chemuviri, ichidzivirira zvakatipoteredza zvinhu kubva pakusangana nesimbi substrate. Uyezve, zinc inopa kudzivirira kwechibairo; kana iyo yekuputira yakakuvadzwa, zinc inoparadza zvakanyanya kune simbi nekuda kwepamusoro reactivity, nekudaro ichidzivirira simbi kubva mukuora.
Maererano neAmerican Galvanizers Association, zinc layer inogona kuwedzera hupenyu hwezvivakwa zvesimbi kusvika kumakore makumi mashanu munzvimbo dzekumaruwa uye makore makumi maviri neshanu munzvimbo dzemahombekombe kana maindasitiri uko mazinga ekuora akakwira. Kushanda kwechidziviriro chekudzivirira kunoenderana nezvakati wandei, kusanganisira ukobvu hwezinc coating, mamiriro ekunze, uye kuvapo kwezvinhu zvinoparadza.
Zvinhu Zvinogona Kutungamira Kukuita Ngura muSimbi Yakagadzirwa
Environmental Conditions
Nepo simbi yakagadzikwa yakagadzirirwa kudzivirira kukoromoka, mamwe mamiriro ezvakatipoteredza anogona kukurumidza kushatiswa kwe zinc coating, zvichizopedzisira zvaita ngura yesimbi yepasi. Hunyoro hwepamusoro, mvura ine acidic, kuratidzwa kwemvura yemunyu, uye zvinosvibisa zvakaita sesarufa dioxide zvinogona kukanganisa dzinc layer. Munzvimbo dzemugungwa, semuenzaniso, kuvepo kweiyo chloride ion kunowedzera zvakanyanya mwero wezinc corrosion. Ongororo yakaitwa neUS Federal Highway Administration inoratidza kuti zvivakwa zvemarata munzvimbo dziri mumahombekombe egungwa zvinogona kuita ngura yakawanda nekuda kwekupfapfaidza munyu uye mwando.
Mechanical Kukuvadza uye Kupfeka
Kukuvadzwa kwemuviri kune zinc yekuputira, senge makwara, abrasion, kana kukanganisa, inogona kuburitsa simbi iri pasi kune zvinoora. Nepo chibayiro chezinc chinogona kuchengetedza nzvimbo diki dzesimbi yakafumurwa, kukuvadzwa kukuru kunogona kukurira iyi kudzivirira. Nguva dzose kuongorora uye kugadzirisa kwakakosha, kunyanya mumashandisirwo apo simbi inogona kunge iri pasi pekunetseka kwemagetsi.
Chemical Exposure
Kuratidzwa kune mamwe makemikari kunogona kukurumidza kuita ngura. Semuenzaniso, acids, alkalis, uye yakasimba oxidizing agents zvinogona kuita ne zinc, zvichibvisa denga rekudzivirira. Nzvimbo dzemaindasitiri uko kuratidzwa kwemakemikari kwakapararira kunoda mamwe matanho ekudzivirira kana zvimwe zvinhu kuti tive nechokwadi chekugara kwenguva refu.
Zvidzidzo Zvenyaya Zvinoratidza Corrosion muGalvanized Simbi
Mienzaniso yepasirese inosimbisa kuti simbi yemarara inogona kuita ngura sei mumamiriro ezvinhu chaiwo. Muchidzidzo chenyaya chinosanganisira mapaipi esimbi muguta riri pamhenderekedzo yegungwa, kukoromoka kwakakura kwakaonekwa nekuda kwekugara uchisangana nemhepo ine munyu uye hunyoro hwepamusoro. Pasinei nekuvhara kwekutanga kwekudzivirira, nzvimbo yakaoma yakaderedza hupenyu hunotarisirwa hwemapaipi ne30%. Mumwe muenzaniso zvivakwa zvesimbi munzvimbo dzemaindasitiri dzine huwandu hwesarufa dhiokisi. Mamiriro eacidic akaita kuti pave ne zinc sulfate, kuderedza danda rekudzivirira uye zvichikonzera kuita ngura pasimbi iri pasi.
Kuongorora Corrosion Rates Munzvimbo Dzakasiyana
Kuyera kushanda kwesimbi munzvimbo dzakasiyana siyana, zvidzidzo zvecorrosion rate zvakaitwa pasi rose. Munzvimbo dzekumaruwa dzine kusvibiswa kwakaderera uye mamiriro akaoma, chiyero chekuora kwe zinc coatings ishoma, kazhinji isingasviki 1 µm pagore. Kusiyana neizvi, nzvimbo dzemaindasitiri nedzemugungwa dzinogona kuratidza corrosion rates inodarika 4 µm pagore. Dhata rakaunganidzwa neInternational Organisation for Standardization (ISO) rinopa nhungamiro yekufanotaura hupenyu hwesimbi yakashongedzwa zvichienderana nekuiswa kwezvakatipoteredza. Semuenzaniso, munharaunda yakarongedzerwa seC3 (mumaguta uye maindasitiri mamiriro ekunze ane mwero sulfur dioxide kusvibiswa), hupenyu hunotarisirwa kusvika pakutanga kugadzirisa kune zinc coating ye85 µm inenge makore 20-40.
Kudzivirira Matanho uye Maitiro Akanakisisa
Kusarudzwa Kwezvinhu Zvakakodzera
Kusarudza rudzi rwemhando yesimbi yakakoshwa uye ukobvu hwakakodzera hwekuputira kwakakosha. Huremu hwekuvhara, hunowanzo kuratidzwa mumagiramu paskweya mita (g/m²), inotaridza mwero wedziviriro. Kune nharaunda dzine mazinga akakwira ekuora, kutsanangura inorema zinc coating inogona kuwedzera kusimba. Zviyero zvakaita seASTM A123 zvinopa nhungamiro yekuvhara ukobvu zvichienderana nekushandisa uye inotarisirwa kuratidzwa kwezvakatipoteredza.
Dziviriro Coatings uye Paints
Kuisa mamwe mapeji ekudzivirira, akadai sepende kana poda, pamusoro pemarata anogona kuwedzera zvakanyanya hupenyu hwesimbi. Iyi duplex sisitimu inosanganisa corrosion dziviriro ye zinc ne barriers dziviriro yejasi. Maererano netsvakurudzo yakabudiswa mu Journal of Protective Coatings and Linings , duplex system inogona kuwedzera mararamiro emarara ne 1.5 kusvika ku2.5 nguva kana zvichienzaniswa nesimbi yega.
Kugara Kuongorora uye Kuchengetedza
Kuongorora nguva nenguva kunobatsira kuona zviratidzo zvekutanga zvekudzikira kana kukuvara. Maitiro ekuchengetedza akadai sekuchenesa, kubata-up pendi, uye kugadzirisa nzvimbo dzakakanganisika zvinogona kudzivirira kufambira mberi kwekuora. Kushandisa hurongwa hwekugadzirisa kunonyanya kukosha kune zvivakwa zvinoratidzwa mumamiriro ezvinhu akaoma.
Zvikonzero Zvehupfumi zveGarivanized Steel Corrosion
Kuora kwezvivako zvesimbi kune zvakakosha zvehupfumi, kusanganisira kuwedzera mari yekugadzirisa, kurasikirwa kwehutano hwemaitiro, uye njodzi dzinogona kuitika. National Association of Corrosion Engineers (NACE) inofungidzira kuti corrosion cost inodarika 3% yeGDP yepasirese pagore. Kushandisa simbi yakabatiswa nematanho akakodzera ekudzivirira kunogona kuderedza mitengo iyi nekuwedzera hupenyu hwebasa rezvivakwa uye kuderedza kudiwa kwekugadzirisa kana kutsiva. Kudyara mumhando yepamusoro-soro yesimbi uye kuchengetedza kwekudzivirira kunogona kuunza mari yenguva refu uye kuchengetedzwa kwakawedzerwa.
Kuenzanisa Ongororo neDzimwe Corrosion Dziviriro Nzira
Dzimwe nzira dzekudzivirira ngura dzinosanganisira kushandiswa kwesimbi isina ngura, simbi isingaite ngura, kupenda, uye cathodic kudzivirira. Imwe neimwe nzira ine zvayakanakira nezvainogumira. Simbi isina tsvina inopa yakanakisa corrosion resistance asi nemutengo wakakwira zvakanyanya. Kupenda kunopa dziviriro yezvidziviriro asi kunoda kugadziriswa nguva dzose uye kunogona kusapa kuchengetedzwa kwechibairo senge zinc. Cathodic dziviriro masisitimu anoshanda asi anowanzo shandiswa kune zvimiro zvakakura senge mapaipi uye zvinoda kuenderera kutariswa. Simbi yakasvibirira inorova chiyero pakati pemutengo uye kuita, ichipa hunobudirira kuchengetedzwa kwecorrosion kune dzakasiyana siyana dzekushandisa.
Kufambira mberi mune Galvanization Technology
Kufambira mberi munguva pfupi yapfuura muhunyanzvi hwekugadzira galvanization chinangwa chekusimudzira kusimba kwekuora kwesimbi. Matekinoroji akadai segalvannealing, anosanganisira kurapwa kwekupisa mushure mekuputika, gadzira zinc-iron alloy coating iyo inopa yakagadziridzwa kunamatira kwependi uye kuramba abrasion. Pamusoro pezvo, kuvandudzwa kweakasarudzika zinc-aluminium-magnesium coatings kwakaratidza hukuru hwekuita munzvimbo dzine hutsinye. Ongororo yakaitwa neInternational Zinc Association yakaratidza kuti mabhachi emhando yepamusoro aya anogona kupa kakapetwa katatu kusimba kwekusaora kwechinyakare hot-dip galvanization.
Zviyero uye Zvinotsanangurwa Zvinotonga Galvanized Simbi
Zviyero zvakati wandei zvepasirese zvinotsanangura zvinodikanwa zvesimbi yakabatiswa, kuve nechokwadi chekuenderana uye kuvimbika mukushandiswa kwayo. Mitemo yakakosha inosanganisira:
ASTM A123/A123M : Inovhara zvinodiwa zvezinc (inopisa-dip galvanized) machira pasimbi nesimbi zvigadzirwa.
TS EN ISO 1461 : Inotsanangura zvakajairwa zvimiro zvemachira uye nzira dzekuyedza dzekupisa-dip galvanized machira pane akagadzirwa simbi uye simbi zvinyorwa.
TS EN 1179 chiyero cheEuropean chezinc uye zinc alloys ye galvanizing.
Kuomerera kune aya zviyero kunovimbisa kuti galvanized simbi inosangana neinodiwa yemhando yemhando yekudzivirira ngura, ukobvu hwekufukidzira, uye michina.
Maonero eNyanzvi uye Maonero eIndasitiri
Nyanzvi dzemaindasitiri dzinoratidza kukosha kwekutarisisa mamiriro ezvakatipoteredza kana tichitaura nezvemarata. Dr. Michael Thompson, injiniya wemetallurgical anonyanya kugadzira ngura, anoti 'Kunyange zvazvo marata achipa dziviriro yakanakisa kubva ku ngura, kushanda kwawo kunotsamira zvikuru pane zvakatipoteredza uye maitirwo ekugadzirisa. Kusarudzwa kwakakodzera uye kunyatsogadzirisa zvinhu zvinokosha pakuwedzera hupenyu hwayo.'
Vagadziri vanosimbisa kudiwa kwedzidzo pamusoro pekugumira uye kushandiswa kwakakodzera kwerata. Sarah Johnson, Mutungamiriri weChigadzirwa cheKugadzirwa kwechigadzirwa chekugadzira simbi, anoti, 'Kunzwisisa zvinhu zvinokanganisa simbi yemarara kwakakosha kune mainjiniya nevagadziri. Nekugadzirisa sarudzo yezvinhu nemamiriro ekunze, tinogona kuve nechokwadi chekugara kwenguva refu uye kuvimbika kwezvivakwa zvesimbi.'
Nyaya Yechidzidzo: Galvanized Simbi muInfrastructure Projects
Kushandiswa kwesimbi yemarara mumapurojekiti makuru ezvivakwa kunoratidza mabhenefiti ayo anoshanda nematambudziko. Somuenzaniso, Sydney Harbour Bridge, inobatanidza simbi dzakagadzirwa nemarara izvo zvakatsungirira kuedzwa kwenguva kubvira pakuvakwa kwaro muna 1932. Kuchengetedza nguva dzose uye kufunga nezvezvakatipoteredza kwave kuchikosha pakuchengetedza simbi yacho. Ukuwo, kupera nguva isati yakwana kwesimbi mune zvimwe zvikamu zveSan Mateo-Hayward Bridge muCalifornia kwakaratidza kukosha kwekusarudzwa kwezvinhu zvakakodzera uye matanho ekudzivirira munzvimbo dzegungwa.
Mazano Anoshanda Pakushandisa Galvanized Simbi
Kufunga Kwekugadzira
Kugadzira zvivakwa zvine kudzivirira ngura mundangariro kunosanganisira kubvumidza kugerwa kwakaringana kudzivirira kusangana kwemvura, kudzivirira kusangana nesimbi dzakasiyana dzinogona kukonzera galvanic corrosion, uye kuderedza mitswe inokwanisa kuungana zvinoparadza. Kushandiswa kwezvisimbiso uye magadzirirwo akakodzera akabatana anogona kuwedzera kuchengetedza zvikamu zvesimbi.
Kuchengeta uye Kubata
Kuchengetedza uye kubata zvakanaka kwezvigadzirwa zvesimbi zvakakoshera kudzivirira kuparara nguva isati yakwana. Zvishandiso zvinofanirwa kuchengetwa munzvimbo dzakaoma, dzinopinda mhepo zvakanaka kure nezvinhu zvinopisa. Panguva yekufambisa uye yekuisa, kutarisirwa kunofanirwa kutorwa kudzivirira kukuvadza zinc coating.
Impact of Regulatory Policies paGarvanized Steel Use
Mitemo yemitemo uye mitemo yezvakatipoteredza inokonzera kugadzirwa uye kushandiswa kwerata. Zvirambidzo pakushandiswa kwezvinhu zvine njodzi, zvakaita semutobvu mukugadzika, zvakakonzera kutorwa kwenzira dzakachena dzekugadzira. Kuvaka makodhi uye indasitiri zviyero zvinowanzo tsanangura kushandiswa kwesimbi kune mamwe maapplication, kukurudzira kuchengetedza uye hupenyu hurefu. Kutevedzwa nemirairo iyi kwakakosha kune vagadziri uye nyanzvi dzekuvaka.
Ramangwana Outlook uye Nhungamiro Yekutsvagisa
Tsvagiridzo inoenderera mberi ine chinangwa chekuwedzera kusimba kwekusagadzikana kwesimbi. Nanotechnology-based coatings ari kuongororwa kuti agadzire ultrathin ekudzivirira akaturikidzana ane anozviporesa ega. Pamusoro pezvo, zvakatipoteredza zvine hushamwari galvanization maitiro ari pasi pekuvandudzwa kuti aderedze ecological kukanganisa kwekubuda kwezinc panguva yekugadzira. Iko kubatanidzwa kweakangwara corrosion monitoring masisitimu anoshandisa masensa akaiswa muzvimiro zvesimbi anogona kupa chaiyo-nguva data pamusoro pekuvhara kutendeseka, ichigonesa proactive kugadzirisa maitiro.
Dzidzo uye Dzidzo yeIndasitiri Nyanzvi
Kuvandudza hwaro hweruzivo rwevagadziri vezvivakwa, mainjiniya, uye vashandi vekuvaka maererano nesimbi yemarara kwakakosha pakushandisa kwayo zvinobudirira. Zvirongwa zvekudzidzisa uye makosi etifiketi anopihwa nemasangano emaindasitiri, akadai seAmerican Institute of Steel Construction (AISC), inopa ruzivo rwakakosha pazvinhu zvenyama, kufunga kwekugadzira, uye maitiro akanaka. Kuenderera mberi nedzidzo kunobatsira vashandi kuti varambe vachiziva kufambira mberi kwetekinoroji uye mazinga ari kubuda.
Mhedziso
Muchidimbu, nepo galvanized simbi yakagadzirirwa kurwisa ngura, haina kudzivirirwa zvachose mukuora mune mamwe mamiriro. Zvinhu zvezvakatipoteredza, kukuvadzwa kwemuchina, uye kuratidzwa kwemakemikari zvinogona kukanganisa iyo inodzivirira zinc layer, zvichitungamira mukuora kwesimbi yepasi. Nekunzwisisa zvinhu izvi uye kushandisa maitiro akanakisa mukusarudza zvinhu, dhizaini, uye kugadzirisa, kusimba kwezvivakwa zvesimbi zvinogona kuvandudzwa zvakanyanya. Kufambira mberi mune tekinoroji yemarara uye kukoshesa kuvaka kwakasimba kunowedzera kusimbisa basa resimbi muinjiniya yemazuva ano. Kune maindasitiri uye nyanzvi dzinovimba Galvanized Simbi , kunyatsonzwisisa kwezvivakwa zvayo uye zvisingakwanisi kwakakosha pakugadzirisa mashandiro uye hupenyu hurefu.
