Daim pleev hlau siv kev ntxhua zinc rau kev tsis tu ncua

Yuam li cas tiv thaiv korrosion txhais lub peev xwm siv rau daim ntoo hlau sib tshooj

Thaum cov planks tsav ntoo siv rau kev khiav tshuab hlo li cas, qhov ceev ntawm qhov chaw khiav tshuab yuav hlo li cas vim tias lub zog ntawm qhov muab los yuav dhau los ncaws thiab muaj cov chaw khaum uas tsis tu zoo uas cuam tshuam rau kev txhim kho. Saib rau qhov chaw xws li sab nraud ntawm dej, cov chaw tsav tsheb lossis qhov chaw twg muaj dej ntsuab ntau, thiab cov kab mob yuav t becoming ib qhov teeb meem loj. Cov kev surov tau pom tias tom qab ob xyoo nyob hauv qhov chaw no, qhov zog tso caij yuav hlo li cas dua li 40%, raws li cov lus nug pub tseg hauv cov ntaub ntawv Material Degradation Report xyoo npag. Cov planks galvanized tsav los ntawm kev ntxhua nrog zinc muaj kev tiv thaiv tiv thaiv kev puas tsuaj los ntawm cov zinc uas tiv thaiv kev txhim kho ntawm cov dej thiab oxygen tso siab rau cov steel hauv qab. Los ntawm kev tiv thaiv qhov thickness ntawm cov khoom, cov planks no yuav tiv thaiv qhov zog ntau dua li cov planks tsis tau tiv thaiv hauv qhov chaw zoo li ntawd.

• Kev tswj hwm nyob : Qhov zog tso caij design yuav nyob ib txhiab hauv qhov chaw
• Kev paub txog ntau npaum li cas : Txo qhov tsim nyog rau kev kho kom hlo tshwj tsis los ntawm kev sib tso ua hlua
• Kev ua hauj lwm raug tag : Txo qhov xav tau rau kev saib xyuas ntau zaus thiab kev ncig tas tsis muaj cai

Ib puag ncig planks nyiam sib tso ua hlua tuaj yeem ua rau muaj kev phem nyob tshaj ib tug khoom siv poob. thaum cov planks no s losing thickness, lawv tsis tuaj yeem pab ntxiv ntau dua, thiab yuav tsum meem tsis paub tuaj. nyob rau sab nraud, cov kab ntsaws le le nyob saum npoo yuav tsum meem zoo tshaj plwb tsis muaj leej twg paub. raws li cov kev surov uas tau pub tseg nyob rau 2025, nyob rau ib hlis ntawm plaub hlis ntawm cov planks tsis tau kho, tau muaj kev puas tsuaj loj nyob rau hauv 18 hlis. nyob rau sab nraud, cov planks tau kho los ntawm kev nqus hluav taws kaw, tau txuas ntxiv lub zog ntawm lawv tag nrho lub sijhawm no. rau cov scaffolding siv nyob siab saum npoo where worker safety is paramount, qhov chaw zoo no yuav tsum muaj kev tso ua hlua tsis tuaj yeem khiav ntawm nws, yog ib qho tseem ceeb rau leej twg xav txog kev phem nyob rau hauv qhov chaw ua hauj lwm.

Yuav ua li cas kev nqus hluav taws kaw yuav pab txhim kho kev nyob dav ntawm cov steel planks rau scaffolding

Qhov Nyiaj Sib Ntxiv: Zinc Coating Adhesion thiab Barrier Protection

Kev ua hot dip galvanizing yog kev sau ua plhaub rau hauv zinc ua nyiaj uas muaj teeb pom kev ceeb li 450 degrees Celsius. Qhov kev ua no tsim cov raj zinc thiab iron alloy uas nyuaj siab rau hauv saum npoo ntawm txoj meep. Yog li cas no thaum kis rau kev sau siv ntaub lossis kev sau ua coating, cov raj no tau sib chwse tau zoo heev kom meej ntau dua. Tso tseg siv coating feem ntau yog ntawm 80 thiab 120 microns, uas tsis ncaj ncees rau qhov xav tias nws yuav tsum sa teb. Qhov tseem ceeb tshaj plaws yog qhov kev pab tiv thaiv kom tsis txhob muaj dej thiab av tso rau hauv txoj meep hauv qab, kho kom tsis txhob muaj kev phom sij. Muaj kev soj ntsuam tias cov galvanized surface no tuaj yeem nyob ntev dua ib txhiab neeg siv paint txhua zaug, vim tias lawv tau nrhiav nyob ze vaj huab cua. Kev nqa ntxiv rau ASTM A123 guidelines pab tiv thaiv kom txhua lub ntim tau sau nrog zoo, xws li cov tog thiab cov chaw sib poob uas feem ntau muaj kev phom sij mus nyob npe, ua rau txhua yam roob nrov ntev dua.

Kev Pab Txhim Kev Kawm Galvanic: Vim Li Cas Lub Zauv Zinc Yog Sib Ntaus Sib Toov

Thaum cov zinc coating tau tus nqi lossis tshuaj xyis li cas los, lawv tseem ua haujlwm zoo li li cas muaj qhov piv rau anode. Lub tswvyim sib thooj ntawm zinc txhais tau tias nó yuav tshuaj xyis ua ntej ua ntej lub rooj tsheb hauv qab tau mob. Tsis meej ntau kuj tseem zoo tshaj plaws vim tias nyob hauv qhov kev sib thooj galvanic no muaj ib qho xwmfab uas tsis tuaj yeem sov thiab muaj feem ntau saib li ib qho kev kho tseeb rau cov coating. Ntau tshaj plaws neeg sawv daws tau pom tias cov khoom siv kev pab txhim no tau nyob siab dua thaum muaj dej ntau lossis muaj yeeb nkab ntau hauv av. Cov coating tsawg kawg tsis muaj kev pab txhim tab sis zinc muaj ob sab kev pab txhim kom tsis mob. Qhov no muaj feem cuam tshaj plaws vim peb pom tias muaj neeg siv cov khoom siv kev pab txhim no tsis tas hloov ntau dua li 40% li qhov siv cov khoom tsis muaj kev pab txhim.

Kev Tsoom Fwm Nyob Zeem Ntawm Tsev: Kev Tsoj Siv Plank Thaiv Rai Hlau Nyob Rau Hauv Qhov Chaw Txo Xeeb

Daim Puv Ntawm Kawntaub Ntuj Lub Qab Teb thiab Kawntaub Ntuj Sab Nraud: Cov Ntaub Ntawv Kev Siv Nyob Zeem Ntawm Hawj Lwm Lub Lim Li 5+

Cov planks hlau tau siv kev kho los ntawm kev ntxhua rai hauv dej npuas siab zoo tshaj plaws thaum sib raug nrog sabbath dej nyob zeem. Yog tias hu rau qhov chaw kho hlau nyob sab nraud ntawm dej, piv txwv li - cov kev cai sawv cev tau tias cov planks no tau muab tso tseg ib leeg ntawm 98% ntawm lub rooj kho hlau tom qab 5 xyoo tib si sib tham nrog dej npuas thiab tsiaj tshaj tshuab. Feem ntau yog ib feem peb dua li qhov uas tshwm sim nrog cov planks tsis tau kho. Qhov uas ua rau no yooj yim yog lub laug zinc tsim ib qhov rooj tsham tiv thaiv. Txawm nyob rau hauv dej npuas tshaj tshuab uas muaj ntau chloride tshaj 25,000 feem rau ib million, cov planks no tsis tau muab tso tseg cov kab ncauj uas peb feem ntau pom. Rau tus neeg uas ua haujlwm nyob rau hauv rooj xa dej, rooj kaw, lossis tsev nyob zeem, qhov tshuaj lom no txhais tau tias tsawg dua kev hloov thiab kev daws teeb meem kom compared to cov khoom siv tshaib uas feem ntau tsis tuaj yeem siv tom qab 18 xyoo.

Kevvam nqi nyiaj ntawm kev siv: Txo qhov nqi kho thiab thay tshwj tsis siv planks

Kev sib piv 7 xyoo pom tias cov planks galvanized muaj nqi nyiaj tsawg dua li 57% dhau planks tsis tau siv. Teem nqi nyiaj pib yog 20–30% siab dua, tab sis kev txo nqi los ntawm:

• Tsis tas ua coating : Tsis tas kho dua coating hnav $18/ft² txhua xyoo
• Siv ntev dua : 12 xyoo vs. 4 xyoo rau cov planks tsis tau siv
• Txo kev ncig tawm : 92% txo kev tawm tswv yim rau kev thay planks

Ua rau txo tau $42,000 txij li 100 planks, ua rau hot-dip galvanization yog lub tswvyim nyob rau qhov chaw muaj qhov kub khaum.

^{Cov ntsiab lus siv hauv cheeb tsam los ntawm cov ntaub ntawv tiam nrog rau infrastructure sab nraud (2023)}

Kev xaiv thiab sau ntxiv rau cov planks tsim tshuab roj hmab sib xyaw nyob rau hauv roj hmab

Kev xaiv zoo rau cov planks neeg tsim tshuab roj hmab sib xyaw nyob rau hauv roj hmab yog qhov tseem ceeb heev kom tau kev nyob deb thiab txoj kev lag luaj nyob hauv xeeb. Cov ntsiab lus tswj yeem yuav tsum sib phim los ntawm cov ntsiab lus tswj kom paub tseeb tias muaj kev tiv thaiv roj hmab zoo, tshpecially rau kev siv nyob rau qhov chaw uas muaj roj hmab loj lossis muaj cheeb kam.

Cov Ntsiab Lus Tswj Tseem Ceeb (ASTM A123, ISO 1461) thiab Lub Hoob Kas Tshwj Xeeb Tshaj Tawm

ASTM A123 thiab ISO 1461 txiav lub tseem ceeb rau kev sib xyaw roj hmab zoo. ASTM A123 yuav tsum muaj lub hoob kas tshwj xeeb tshaj tawm ntawm 100μm (3.9 mils) rau cov neeg tsim tshuab uas ntau dua 6.3mm, thaum ISO 1461 sau tseg 85μm rau cov khoom uas ntau dua 6mm. Lawv cov tshwj xeeb no tiv thaiv zoo thiab nyob deb los ntawm:

Thaum cov kuaj tsis txog lub cheeb tsam, lawv feem ntau tsis tau li xav nyob rau saum toj no. Cov kuaj me me lossis tsis muaj kev tiv thaiv zoo feem ntau yuav pheej nyob rau 2 rau 3 xyoo thaum tshaj tawm rau hauv dej mu salt. Kev tau leej twg thib ob kuv muag tias tias cov kuaj tau txais standard ASTM A123 lossis ISO 1461 yog qhov tseem ceeb heev rau txhua qhov chaw sib khoom loj. Xyuas cov phooj ywg nyob hauv cheeb tsam kuj pom qhov lwm yam. Cov khoom siv uas tau kuaj zoo yuav muaj kev pheej tsis ntau heev, tsawg tshaj 5% tom qib 5 xyoo nyob rau hauv cheeb tsam ntawm av rooj. Cov khoom siv uas muaj tias tias no yuav nyob ntev dua ib plaug caud tshiab li cov tsis muaj tias tias, yog li qhov kev lag luam no yuav tsum tau ua los ntawm kev nyob ntev.

Cov Lus Nug Nrov

Qhov hot-dip galvanization yog dab tsi?

Kev nqus rau hauv zinc kuaj yog qhov kev tsim uas roj steel raug nqus rau hauv zinc tso, tsim ib lub coating zinc uas pab saib xyuas roj steel los ntawm kev phom sij.

Yuav vim li cas kev pab saib xyuas los ntawm kev phom sij yog tseem ceeb rau cov planks steel scaffolding?

Kev pab saib xyuas los ntawm kev phom sij yog tseem ceeb vim nws txo qhov steel los ntawm kev nyiav thiab tsim cov chaw so, zoo ib yam li tias cov scaffolding nyob ib si thiab nyob zoo.

Yog li cas galvanized planks sib npaug nrog planks tsis tau ua haujlwm hauv daim ntawv nqi?

Txawm hais tias cov planks galvanized muaj nqi pib siab dua, lawv muab nqi siv tsawg dua vim muaj kev lag luam tsawg dua thiab sijhawm ntev dua.