Hlau thiab cov hlau yog ob ntawm cov feem ntau siv cov hlau hauv ntiaj teb. Ob yam khoom muaj cov khoom tshwj xeeb uas tau teeb tsa lawv ntawm lwm tus, thiab cov thev naus laus zis thiab cov txheej txheem hlau thiab cov hlau galvanized. Cov no muaj ntau yam kev siv hauv ntau qhov kev lag luam, tsev neeg, thiab kav dej. Kab lus no yuav piav qhia txog qhov sib txawv ntawm cov hlau nplaum
Muaj pes tsawg
Lub ntsiab tivthaiv ntawm cam khwb cia hlau los ntawm cov hlau ores. Tom qab ntawd, ib qho tagnrho ua los ntawm cov hlau, carbon, thiab silicon. Nws feem ntau yog ua nrog 2 mus rau 4% ntawm cov pa roj carbon, thiab ib feem me me ntawm silicon. Impurities zoo li manganese, leej faj, thiab phosphate qee zaum muaj cov hlau cam khwb cia. Cov khoom siv ntxiv no feem ntau yog me me rau kev cuam tshuam cov khoom ntawm cov hlau cam khwb cia.
Galvanized steel yog ua los ntawm cov carbon lossis cov tawv nqaij tawv, uas yog cov hlau hlau. Carbon Steel yog tsim los ntawm ob lub ntsiab: hlau thiab carbon. Lwm cov hlau uas tuaj yeem muaj nyob rau hauv cov ntaub ntawv no yog manganese, silicon, thiab tooj. Lawv feem ntau suav tsawg dua 0.60% ntawm alloy, uas txhais tau tias lawv siv rau cov yam ntxwv ntawm alloy yog negon yog negon.
Kev npaj
Cam Khwb Cia Hlau npaj siv lub moj tej tawg sov thiab ua los ntawm cov hlau-carbon alloys lossis npua hlau. Thaum lub sijhawm tus txheej txheem no, cov hlau cam khwb cia ncaj qha los ntawm cov hlau molten. Lub impurities hais tau tej zaum yuav raug hlawv tawm thaum lub sijhawm no. Txawm li cas los xij, cov pa roj carbon kuj tuaj yeem hlawv cov tib yam, uas yuav tsum tau hloov ua ntej cov ntawv cam khwb ua ntej cam khwb ua ntej. Nrum hlau yuav yog qhov khuam yog nws tsis muaj carbon thiab silicon ntsiab. Tom qab lub cub tawg, cam khwb cia hlau tsis xav tau ua kom muaj zog nrog hammers thiab lwm yam siv. Qhov tshwm sim yog tsawg dua cov txheej txheem ua kom zoo dua thiab cov khoom pheej yig dua.
Galvanized steel yog tsim los ntawm cov roj carbon hlau uas tau sib xyaw nrog cov txheej tiv thaiv zinc. Qhov no yog ua nyob rau hauv tus txheej txheem hu ua Galvanization ntawm uas muaj ntau hom sib txau, xws li cua sov txau, kub-dip, electroplating, thiab lwm yam. Hauv kub-dip galvanization, cov pa roj carbon hlau yog dipped rau hauv kub Molten zinc nrog qhov kub thiab txias txog li 460 ° C. Tom qab nws yog cov coated, nws tau tsa rov qab los thiab nthuav tawm rau cov cua. Qhov kis no yuav ua rau cov zinc ua rau oxygen, tsim zinc oxide. Ntxiv mus, nws tom qab ntawd reacts nrog cov pa roj nyob rau hauv huab cua los ua zinc carbonate, uas ua ib txheej grey ntawm saum npoo ntawm cov hlau. Txawm hais tias nws tau coated nyob rau lwm lub caij, cov hlau tseem yuav malleable thiab yooj yim ua haujlwm los ntawm lwm cov hlau manufacturing.
Kev tiv
Cov hlau nrum yog feem ntau tiv taus cov atmospheric corrosion. Lawv muaj kev tawm tsam ntau dua li cov hlau alloys. Cov hlau cam khwb cia kuj tseem hnav-resistant thiab tuaj yeem dampen dibrations. Txawm li cas los xij, nrum Irons yog kev cuam tshuam se dej hiav txwv thiab yog yooj yim corroded thiab pitted thaum tso ntev ntev li ntev-ntsev ib puag ncig. Nrum hlau tseem tuaj yeem ua ntau tus cittle tshaj li lwm cov hlau txheej txheem.
Galvanized steel yog heev corrosion resistant thaum piv rau feem ntau lwm cov hlau. Nws muaj ob txoj hauv kev ntawm kev txo cov corrosion, uas los ntawm cov txheej txheem galvanization. Lub Molten Zince lub tsho tiv no ntawm cov pa roj carbon hlau xws li kev mob, thiab tsim cov roj oxide heev. Nws tseem muab cov zinc anode kom tau txais cov xeb hauv qhov chaw ntawm cov hlau.
Yuav tsum zinc txheej puas lawm lossis khawb tawm, zinc anode tseem tuaj yeem tiv thaiv cov hlau ib puag ncig. Qhov seem zinc tseem tuaj yeem sau nws txoj kev tiv thaiv ntawm zinc oxide. Zoo ib yam li txhuas, zinc yog reactive heev rau oxygen thiab yog li nqus tau feem ntau ntawm cov pa oxygen nws nkag mus rau hauv. Qhov no txwv tsis pub cov hlau hauv qab cov txheej los ntawm oxidation ntxiv.
Kev siv
Cam khwb cia hlau yog qhov ruaj khov thiab muaj kev tiv thaiv cov khoom siv hlau, ua rau nws haum rau ntau yam ntawm lub hom phiaj. Cov hlau nrum tuaj yeem siv los ua kom lub zog tsheb, cov khoom siv, thiab kav dej rau tsheb. Nws tuaj yeem siv rau hauv cov hlau tooling tuag thiab Machinery qhov chaw rau kev tsim khoom. Cam khwb cia hlau kuj muaj feem ntau pom hauv chav ua noj ua ke raws li nws yog qhov zoo rau cov khoom cua kub, thiab cov khoom siv hlau sib xyaw ua ke yog kib cov lauj kaub. Txawm li cas los xij, koj tseem tuaj yeem pom cov cuab yeej hlau pov tseg, ci pwm, thiab ua noj ua haus. Lawv kuj muaj nyob hauv cov kav dej, txawm tias nws tsis yog qhov siv dav dav thiab feem ntau tsis pom zoo rau cov tsev tshiab.
Galvanized steel yog favored rau nws ntev-ntev siv thiab resistant cov khoom. Ib qho piv txwv uas muaj txiaj ntsig ntawm nws siv yog kav dej kav dej. Nws txheej tiv thaiv ntawm zinc yooj yim tiv thaiv nws ntawm xeb - ib daim ntawv ntawm corrosion. Galvanized steel kuj tseem siv nyob rau hauv cov thav ntawv steel hauv kev siv tsev. Nws kuj tseem siv tau los ua lub cev tsheb thiab lub tawb thiab tawb. Cov hlau no tseem tuaj yeem pom hauv cov phiaj xwm tiv thaiv thiab cov phiaj xwm kev loj ntawm txoj kev.
Qhov Zoo
Ob qho ntawm cov hlau cov hlau no muaj cov chaw tuab dua piv rau lwm hom hlau, uas pab txhawb lawv cov tawv thiab hnav tsis kam. Cast hlau qhov zoo dua li cov hlau nyob hauv nws lub peev xwm los khaws cov cua sov kom ntev dua li feem ntau hom hlau. Qhov no ua rau nws haum rau cov ntawv thov uas xav tau muaj zog thiab muaj qhov kub muaj zog, xws li ua noj. Txawm li cas los xij, raws li nws yog tsawg dua corrosion resistant thiab nkig, nws yog qhov tsis haum rau kev siv thiab muaj kev kub siab, xws li kav dej.
Galvanized steel muaj txhua yam zoo koj yuav nquag pom nrog hlau, ntxiv rau kev txhim kho kev tiv thaiv hauv cov chaw ib puag ncig feem ntau. Galvanized steel kuj tseem ntau malleable ntau dua li cam khwb cia hlau, uas txhais tau hais tias galvanized steel kav thiab yas tau yooj yim dua tsim thiab customized rau lawv cov laj thawj. Galvanized steel muaj cov txiaj ntsig ntxiv ntawm kev tiv thaiv kev tiv thaiv lub sijhawm ntub thiab lub sijhawm qhuav, uas yuav xeb ntau feem ntau ntawm cov hlau. Qhov no ua rau nws zoo meej rau kev ua cov kav dej kav dej.
Lub Sijhawm Post: Tsib Hlis-11-2022