Ukukhetha izinto eziphathekayo kudla ngokunyanzelisa ukulalanisa okunzima. Iinjineli kufuneka zilinganise ngononophelo iindleko zokuthenga kwangaphambili ngokuchasene namatyala olondolozo lwexesha elide. Awunakukwazi ukukhetha isinyithi ngokulula xa ubomi beziseko ezingundoqo buphezu komgca. Isinyithi esine-galvanized isombulula le ngxaki ngokufanelekileyo. Siyichaza njengentsimbi eqhelekileyo okanye intsimbi efakwe kwi-zinc. Le ndibaniselwano idala umqobo womzimba orhabaxa ecaleni kokhuselo olusebenzayo lwe-electrochemical ngokuchasene nomhlwa. Namhlanje, isesisiseko sokwenziwa kunye nokwakhiwa kwale mihla. Nangona kunjalo, ukucacisa uhlobo olungalunganga okanye ukungahoyi imiqobo yokusingqongileyo kubangela ukusilela ngokukhawuleza, kwangaphambi kwexesha. Ezi mpazamo zikhokelela ekunciphiseni iindleko kunye neengozi zokhuseleko kwisakhiwo. Kweli nqaku, uya kufunda isayensi esisiseko emva kweengubo ze-zinc. Siza kuphonononga iindlela ezahlukeneyo zokusebenza ezikhoyo. Ekugqibeleni, uya kufumanisa ukuba ungazivavanya njani ezi zikhetho kwiimfuno zakho zeprojekthi.
Izinto eziphambili zokuThatha
Ukukhuselwa kwe-Electrochemical: I-Zinc isebenza 'njenge-anode yombingelelo,' ukukhusela intsimbi eveziweyo nokuba i-coating ikhutshwe (isebenza ukuya kwi-radius ye-5mm).
IiNdleko zoBomi (LCC): Inikezela ukuya kuthi ga kwi-50-100 yeminyaka yokuphila ngaphandle kokulondolozwa kwindawo eqhelekileyo, igqithise kakhulu ipeyinti eqhelekileyo.
Uhlobo lweMiba: Iindlela zokusetyenzwa (umzekelo, i-Hot-Dipped vs. Electrogalvanized) zichaza ubukhulu bemathiriyeli, inkangeleko, kunye nokusebenza okufanelekileyo.
Imingcipheko yokuphumeza: Ukuwelda kufuna imigaqo engqongqo yokhuseleko ngenxa yomphunga we-zinc onetyhefu, kwaye ukugcinwa ngokungafanelekanga kunokubangela ukuthotywa ngokukhawuleza 'ngerusi emhlophe'.
INzululwazi yeGalvanization: Indlela eNqanda ngayo ukungaphumeleli
Ukuqonda indlela i-zinc ekhusela ngayo isinyithi kufuna ukujonga ngaphantsi komhlaba. Indlela yokukhusela ixhomekeke kuzo zombini i-metallurgy kunye ne-electrochemistry.
Umgaqo we-Anode yedini
Eyona ndlela yokukhusela ingundoqo kukhuseleko lwe-cathodic. I-Zinc isebenza njengesinyithi esisebenzayo, okanye i-anodic, xa kuthelekiswa nentsimbi ye-carbon. Xa evezwe kwi-electrolyte efana namanzi emvula, ezi zinyithi zimbini zenza i-galvanic cell yendawo. Ngenxa yokuba i-zinc iphumla phezulu kwi-anodic index, inika ngokukhululekileyo ii-electron zayo. I-oxidizes kuqala. Ngokuzincama, ikhusela isiseko sesinyithi esisisiseko. Olu khuselo lwe-electrochemical luyaqhubeka nokusebenza nokuba ukrwela umphezulu. I-zinc iya kukhusela intsimbi evulekileyo ukuya kwi-radius ye-5-millimeter ukusuka kwindawo yomonakalo.
Isithintelo soMzimba kunye neMetallurgy
Abaninzi bacinga ukuba abavelisi bancamathelisa nje i-zinc kwintsimbi. Oku akulunganga. Iinkqubo ze-Hot-dip zibangela ukusabela okunamandla kwe-metallurgical. Xa abaqhubi bentywilisela intsimbi kwi-zinc etyhidiweyo, iintsimbi ziyahlukana phakathi. Benza i-zinc-iron intermetallic edityanisiweyo ngokuqinileyo. Ezi maleko ze-alloy zangaphakathi zihlala zivavanya nzima kunesiseko sentsimbi ngokwayo. Ngenxa yoko, banikezela ukuxhathisa okuphezulu kwe-abrasion. Xa izixhobo ezinzima zibetha isinyithi, umaleko we-zinc ococekileyo wangaphandle ufunxa impembelelo ngelixa iileya zangaphakathi ezinzima zithintela i-gouges enzulu.
Ulawulo olulindelekileyo
Kufuneka umisele ulindelo olusengqiqweni. Abantu bakholisa ukwenza impazamo yesinyithi kwizinto ezikhusela umhlwa ngokupheleleyo. Ingubo ye-zinc ihlala iyi-asethi esetyenziswayo. Imekobume iyalela elona zinga lokutsha kwe-zinc. Nje ukuba imeko-bume ikhuphe lo maleko okhuselayo, isiseko sesinyithi esiveziweyo siya kuba nomhlwa. Awukwazi ukukunqanda oku kubola, kodwa unokukuxela kwangaphambili. Ngokulinganisa ukufuma kwendawo kunye namanqanaba ongcoliseko, iinjineli zinokuqikelela ngokuchanekileyo ubomi obuseleyo bofakelo.
Iintlobo zeNtsimbi yeGalvanized kunye neFom Factors
Abathengi kufuneka bajonge i-matrix yokukhetha enzima ngexesha lokuthenga. Iindlela zokusetyenzwa ziyalela ubukhulu bokwambathisa, inkangeleko yomphezulu, kunye neemeko ezifanelekileyo zokusetyenziswa. Makhe sicazulule iinketho eziqhelekileyo.
Uhlobo |
Inkqubo |
Imbonakalo |
Eyona meko yokusetyenziswa |
I-Hot-Dip (HDG) |
Ukuntywiliselwa kwi-840°F zinc etyhidiweyo |
Ingqindilili, ikristale (spangle) |
Iziseko ezingundoqo zangaphandle |
Electrogalvanized (EG) |
Umsinga wombane kwibhafu ye-saline |
Ibhityile, igudile, imatte |
Iimoto, iindawo ezivaliweyo zesixhobo |
Galvannealed |
Ishushu-ifakwe emva koko iphathwe ubushushu |
Matte grey, akukho spangle |
Ipeyintiwe amacandelo esakhiwo |
Ngaphambili kweGalvanized |
Ukuvulwa okuqhubekayo ngesantya esiphezulu |
Iyunifomu, ukugqiba okuqaqambileyo |
Iikhoyili eziveliswe ngobuninzi kunye namaphepha |
I-Hot-Dip Galvanizing (HDG)
Ukugalelwa kwegalvanizing ediphu eshushu kuhlala kungumgangatho opheleleyo weziseko ezingundoqo ezinzima. Abavelisi bantywilisela iinxalenye zentsimbi ezenziweyo kwivathi ye-zinc etyhidiweyo eshushu malunga ne-840°F. Oku kudala i-coat etyebileyo, eyomelele kakhulu. Njengoko intsimbi iphola, ihlala ivelisa ipateni eyahlukileyo yekristale eyaziwa ngokuba yi-spangle. I-HDG ilawula usetyenziso lwangaphandle apho ubomi obude bungaphezulu kweenkxalabo zobuhle.
Intsimbi yombane (EG)
I-Electrogalvanizing itshintsha ngokupheleleyo indlela yesicelo. Abavelisi babeka isinyithi kwisisombululo se-saline esinezinc ions. Bazisa umsinga wombane, ukunyanzela i-zinc ukuba ifake kwindawo yentsimbi. Le nkqubo iphumela ekugqityweni okuncinci, okugudileyo. Awuyi kubona i-crystalline spangles apha. Ibonelela ngokuncamathela kwepeyinti ekhethekileyo. Iinjineli zihlala zikhetha i-EG yemizimba yeemoto okanye iindawo ezivaliweyo zesixhobo sangaphakathi apho ukugqibelela kwezithambiso kubalulekile.
Intsimbi yeGalvannealed
I-Galvannealing isebenzisa inkqubo ye-hybride ehlakaniphile. Intsimbi iphantsi kwe-standard hot-dipping, kodwa abaqhubi badlula ngokukhawuleza kwisithando somlilo ngaphambi kokuba i-zinc iqine. Olu nyango lobushushu lunyanzelisa intsimbi esuka kwintsimbi ukuba isasazeke kwi-zinc coating. Ivelisa i-matte grey, indawo enemingxuma kancinane. Intsimbi yeGalvannealed ibamba ipeyinti ngokugqwesileyo. Ikwabonelela ngeweldability ebalaseleyo, iyenza idume kumacandelo emveliso.
Ngaphambili kweGalvanized (Iyaqhubeka)
Izibonelelo zisebenzisa indlela yokugalela kwangaphambili kwimveliso yobuninzi. Baqhuba ngokuqhubekayo ikhoyili yentsimbi enezibilini ngesantya esiphezulu. Ilitye lokusila likhupha isinyithi esingenanto kwaye ngokukhawuleza siyigqithise kwibhafu ye-zinc etyhidiweyo. Iimela zomoya zosula ngokukhawuleza ulwelo olugqithisileyo ukuqinisekisa ukugqunywa ngokugqibeleleyo. Abavelisi ke banqumle imathiriyeli iimveliso zamaphepha entsimbi phambi kokwenziwa kokugqibela. Le ndlela igcina iindleko eziphantsi ngelixa igcina umaleko wokukhusela ohambelanayo.
UVavanyo lweNtsebenzo: Izinto eziluncedo xa kuthelekiswa neMida yokuSebenza
Iinjineli ezithandabuzayo zifuna ubungqina bokuthethelela ukhetho lwezinto eziphathekayo. Kufuneka uvavanye ityala leshishini elisebenzayo ngokuchasene nemida yokwenyani yokusetyenzwa.
Imeko yeShishini (izinto eziluncedo)
Iindleko zokuQala ezisezantsi: Iindleko zokugquma iZinc zincinci kakhulu ngaphambili xa kuthelekiswa nokunyanga intsimbi kunye neepolima zedyasi ezininzi okanye uphuculo ukuya kwialloys zangaphandle.
Ukunyaniseka kweZero: Imizi-mveliso ayinakukwazi ukumelana nexesha lokuphumla. Amacandelo amandla elanga nawomoya alahlekelwa yingeniso enkulu xa izixhobo ziyeka. I-Zinc inikezela amashumi eminyaka yokusebenza okuthembekileyo ngaphandle kokufuna ukubamba.
Ukuhlola okulula: Unokuqinisekisa ubukhulu bokutya kunye nomgangatho ngokukhawuleza. Abahloli bavavanya umphezulu ngeso kwaye basebenzise i-gauges elula, engonakaliyo yamagnetic ukuqinisekisa ukuthotyelwa.
IMida yokusiNgqongileyo kunye noLungiselelo (uRhwebo)
Awukwazi ukusebenzisa i-zinc kuyo yonke indawo. Inobuthathaka obuthile obunokuthi bubeke esichengeni imfezeko yesakhiwo ukuba ayihoywa.
Ubuthathaka be-pH: I-zinc ikhawuleza ithobeke kwiindawo ezineasidi kakhulu okanye ezine-alkaline kakhulu. Imvula eneasidi, ungcoliseko olumandla lwemizi-mveliso, okanye ukuba sesichengeni rhoqo kumanzi anetyuwa kuya kukhawulezisa ukudleka. Izinto eziphathekayo zisebenza kakuhle kwiindawo ezingathathi hlangothi ze-pH phakathi kwe-6 kunye ne-12.
Iingozi zeMpilo kwiNtengiso: I-Welding ibeka ingozi enkulu yokhuseleko. I-Zinc ibilisa kwiqondo lokushisa eliphantsi kunentsimbi enyibilikayo. Xa usebenzisa itotshi ye-welding, i-zinc iyancipha ngoko nangoko. Ukusezela lo msi uyityhefu kubangela iMetal Fume Fever, okuzisa iimpawu ezimandundu ezifana nomkhuhlane. Amaziko afuna umoya okhethekileyo wokukhupha umoya ukukhusela abasebenzi.
Izithintelo zobungakanani: Izinto ezishushu-dip zijongene nemida enzima yomzimba. Imilinganiselo yebhafu yegalvanizing ikhawulela ubungakanani bamacandelo. Ukuba umqadi wolwakhiwo ungaphezulu kobukhulu bevathi, abaqulunqi kufuneka bawugxumeke kumacandelo okanye bafumane enye indlela yokwaleka.
Intsimbi yeGalvanized vs. Stainless Steel: Shortlisting Logic
Amaqela okuthenga ahlala exoxa phakathi kweengubo ze-zinc kunye ne-alloys ezingenasici. Kufuneka usebenzise ingqiqo ethe ngqo, esekwe kwimeko ukwenza umnxeba ochanekileyo.
Ukunyangwa kokuMhlwa
Intsimbi engatyiwayo ixhomekeke kumaleko we-chromium oxide onokuziphilisa. Xa ikrwelwa, ioksijini ikhawuleza idibane nechromium ukuvala undonakele. Igqithisa kakhulu i-zinc kwiindawo eziphakamileyo okanye zaselwandle. Ngokwahlukileyo, i-zinc yokugqoka idini elingqongqo. Iyaphela ngokuqhubekayo ngokuhamba kwexesha. Nje ukuba inyamalale, intsimbi inoziro eseleyo yokhuselo.
Amandla & Ubunzima
I-stainless ngokubanzi iphumelele ekusebenzeni komatshini ekrwada. Ukwahluka kwesiphelo esiphezulu se-stainless kunika amandla okuqina ukuya kuthi ga kwi-1300 MPa. Intsimbi yesakhiwo esenziwe ngamagalvanized ngokuqhelekileyo iphakathi kwe-400 kunye ne-840 MPa. Ukuba ujongene nezithintelo zobunzima obunzima kwaye ufuna umthamo omkhulu wokuthwala umthwalo, i-stainless ibonelela ngomlinganiselo ongcono wobunzima bobunzima.
Ukuthotyelwa kweshishini
Abalawuli banyanzelisa izigunyaziso zezinto eziphathekayo. I-stainless inyanzelekile ngokupheleleyo kukutya okuninzi kunye nezicelo zonyango. Inika indawo engekho-porous, engathobiyo echasene nokukhula kwebhaktheriya. I-Zinc iyancipha ngokukhawuleza xa ibonakaliswe kukutya okumuncu okufana neetumato okanye i-citrus. Ungaze uchaze isinyithi esifakwe kwi-zinc ukuze udibane nokutya ngokuthe ngqo.
UkuSebenza kweendleko
I-Economics ithanda kakhulu i-zinc. Umgangatho Ulwakhiwo lwentsimbi eyiGalvanized Steel lubonelela malunga nama-80% osetyenziso lwentsimbi engatyiwayo ngeqhezu nje leendleko zemathiriyeli ekrwada. I-stainless ihlala ixabisa kane ukuya kahlanu ngaphezulu ngeponti nganye. Lo msantsa omkhulu wamaxabiso wenza i-zinc ibe yeyona nto ikhethiweyo yokuzikhethela kwiiprojekthi zeziseko ezingundoqo ezisekelwe kumthamo.
Iinyani zokuphumeza: Uyilo, iMigangatho, kunye noGcino
Ukuba nobuchule kwisayensi esisiseko kuthetha kancinci ukuba uyasilela ngexesha lokubulawa. Uyilo olubi kunye nokuphathwa ngokungakhathali konakalisa amawaka eetoni zentsimbi ngonyaka.
Uyilo lweGalvanizing
Abaqulunqi kufuneka benze iinjineli zamalungu ngokukodwa kwibhafu etyhidiweyo. Kufuneka uyile amacandelo anemingxuma eyaneleyo yokungena nokukhupha amanzi. Ukuba uyakha isakhelo se-tubular esitywiniweyo, umoya ovalelweyo uya kuthintela i-zinc ekugqumeni iindonga zangaphakathi. Okubi nangakumbi, naluphi na ulwelo olubanjiweyo okanye ukufuma kuya kuba ngumphunga ngoko nangoko kwibhafu ye-840 ° F. Oku kwanda kubangela uxinzelelo oluqhushumbayo, luvuthela ngamandla intsimbi kwaye lubeka engozini abasebenzi basefektri.
UGcino & Nokuphatha (Ukuthintela umhlwa omhlophe)
Ukugcinwa okungafanelekanga kutshabalalisa uluhlu lwempahla ngokukhawuleza. Xa ukufuma kubambeke phakathi kweenyanda ezipakishiweyo zesinyithi okanye iileya zekhoyili, oko kubangela i-oxidation eyingozi. Ibanjelwe ikharbon diokside equkuqelayo, umphezulu wenza i powdery zinc oxide eyaziwa ngokuba 'umhlwa omhlophe.' Ukuthintela oku kuthotywa, landela ngokungqongqo le migaqo:
Gcina zonke izixhobo ngaphakathi endlwini nanini na kunokwenzeka.
Qinisekisa ukuba indawo yokugcina ihlala yomile kwaye ingena umoya.
Phakamisa iinyanda emhlabeni usebenzisa iibhloko zomthi.
Zijike kancinane izitaki ukuze uvumele ukujiya okuqokelelweyo kuphume amanzi ngokukhululekileyo.
Iinkqubo zeDuplex (Ukupeyinta ngaphezulu kweHDG)
Iinjineli zihlala zidibanisa iindlela ezimbini zokukhusela. Ukupeyinta phezu komphezulu osandula ukugqunywa kwenza i-synergistic ephezulu 'Duplex System.' Ipeyinti ikhusela i-zinc ekuveleni kweekhemikhali kunye nokufuma. Okwangoku, i-zinc ikhusela umhlwa ukuba ungarhubuluzi phantsi kwefilimu yepeyinti ukuba iyakrweleka. Le ndibaniselwano inamandla yandisa umjikelo wobomi bomhlwa malunga ne-2X xa kuthelekiswa nokusebenzisa ipeyinti okanye i-zinc yodwa.
Ukuthobela
Ungaze uthembele kwiziqinisekiso zomlomo ezivela kubaboneleli. Ngalo lonke ixesha ucela imathiriyeli ehambelana ngokucacileyo nemigangatho ebekiweyo. ENyakatho Melika, cacisa i-ASTM A123 yeemveliso zesakhiwo kunye ne-ASTM A153 yokuchithwa kwe-hardware. Le migangatho engqongqo iqinisekisa ngokusemthethweni ubukhulu obufunekayo bokugquma kwaye iqinisekisa imfezeko eyiyo yesinyithi.
Ukuqukumbela
Intsimbi efakwe igalvanized isesona sixhobo singabizi kakhulu kwaye sinokuqikelelwa ukuba singanyamezeli umhlwa kwiziseko zophuhliso jikelele. Ngokubophelela umaleko osebenzayo we-zinc kwintsimbi ye-carbon carbon ephezulu, abavelisi benza imveliso emelene nokuxhatshazwa okunzima ngelixa befuna ukugcinwa kwe-zero.
Xa ukhetha imathiriyeli yakho, soloko ubonisa ukuba sesichengeni kokusingqongileyo kuqala. Chonga ukufuma kwendawo, amanqanaba etyuwa, kunye neasidi. Emva koko, misela ubomi bakho obufunekayo kwaye uvavanye iimfuno zakho zokwenza. Ukuba iqela lakho liceba ukuwelda okanye ukupeyinta isinyithi kakhulu, ezi zinto kufuneka ziqhube ukhetho lwakho lokugqibela phakathi kwe-hot-dipped, electroplated, okanye icoil ezahlukeneyo eziqhubekayo.
Thatha inyathelo phambi kokuba ugqibezele amaphepha akho okuthenga. Qhagamshelana ngokuthe ngqo ne-metallurgist ukuxoxa ngemilinganiselo yakho yeprojekthi ethile. Banga iikowuti ezidwelisa ngokucacileyo iimfuno ezihambelanayo ze-ASTM ukuqinisekisa ukuba utyalo-mali lwakho lusebenza kanye njengoko bekulindelekile.
FAQ
Umbuzo: Ngaba intsimbi efakwe igalvanized ekugqibeleni iyarusa?
A: Ewe. Ingubo ye-zinc idini kwaye iya kuphelelwa lixesha. Nangona kunjalo, kwiimeko eziqhelekileyo zomoya, le nkqubo inokuthatha iminyaka engama-50 ukuya kwi-100. Intsimbi engaphantsi iyarusa kuphela xa imo engqongileyo iwusebenzisa ngokupheleleyo umaleko we-zinc okhuselayo.
Q: Ungakwazi 'ukudipha kabini' intsimbi efakwe igalvanized ukuze ufumane isambatho esityebileyo?
A: Hayi. Ubunzima bokugquma buchongwa yikhemistri yentsimbi kunye nexesha lokucwiliswa, kungekhona ngokuyidibanisa kabini. 'Ukudipha kabini' kushishino kubhekiselele kuphela ekujikeleziseni indawo enkulu kakhulu ukuba ivathi inxibe iziphelo zombini.
UMBUZO: Yintoni 'ibanda lokutshiza'?
A: Ukutshiza okubandayo kuligama elingafanelekanga. Ngokuqhelekileyo ibhekisela kwipeyinti ecebileyo ye-zinc efakwe ngebrashi okanye isitshizi. Ngelixa ibonelela ngokhuseleko lwegalvanic, ayidali ibhondi yesinyithi ehlala ixesha elide ye-hot-dip galvanizing kwaye kufuneka isetyenziswe ikakhulu xa kuchukumisa.
