Galvanized hlautsis yog txhais los ntawm ib qib ntawm cov hlau; es, nws hais txog ib hom hlau uas tau coated nrog ib txheej ntawm zinc los tiv thaiv nws los ntawm corrosion. Qib ntawm cov hlau hauv qab tuaj yeem sib txawv raws li daim ntawv thov, cov qauv tsim, thiab cov khoom siv kho tshuab uas xav tau. Cov txheej txheem ntawm galvanization cuam tshuam nrog txheej hlau nrog zinc los ntawm txoj kev xws likub-dip galvanizinglos yogelectro-galvanizing. Cov txheej zinc no tsim cov txheej txheem tiv thaiv uas tiv thaiv xeb los ntawm kev tsim cov txheej txheem oxide tiv thaiv thaum raug cov khoom. Hauv qab no, kuv yuav rhuav tshem kev sib raug zoo ntawm qib steel thiab galvanized steel.
Common Steel Qib siv rau Galvanizing
Carbon Steel:
Galvanized steel feem ntau yog tsim los ntawm cov pa roj carbon me me los yog cov hlau tsis tshua muaj hlau vim tias lawv muaj dav, pheej yig, thiab yooj yim ntawm galvanization. Cov qib steel me me xws liA36thiabA283feem ntau siv. Cov qib no yog nrov hauv kev tsim kho, kev tsim khoom, thiab kev tsim kho vaj tsev vim lawv lub zog zoo thiab weldability.
High-Strength Low-Alloy (HSLA) Hlau:
Rau cov ntawv thov uas xav tau ntau zog thiab kav ntev,HSLA hlauyog galvanized. Qib xws liASTM A572 Cov Lus Qhia Tshwj Xeeblos yogA992feem ntau yog siv rau kev siv cov txheej txheem. Cov hlau no muaj cov khoom siv kho tshuab zoo dua li cov hlau me me tab sis tseem tsim nyog rau galvanization.
Cov qauv hlau:
Hauv kev tsim kho, structural steel qib xws liASTM A500 1(siv rau hollow structural seem) thiabASTM A53(siv rau cov kav dej) feem ntau galvanized. Cov qhab nia no muaj peev xwm thauj tau siab thiab nquag siv hauv kev tsim cov qauv, txuas hniav, thiab cov kav dej.
Sheet Hlau Hlau:
Galvanized sheet hlau feem ntau siv cov qib zoo liASTM A653 Cov Khoom Siv Hluav Taws Xob, uas yog dav siv nyob rau hauv ru tsev, siding, thiab automotive panels. Qib no qhia txog cov ntawv kub-dip galvanized steel ntawv thiab muab cov txheej txheem sib txawv kom haum rau qhov sib txawv ntawm cov kev xav tau ntawm corrosion.
Cold-Rolled Steel:
Rau cov kev siv qhov twg precision thiab du tiav yog qhov tseem ceeb, txias-kuav los tiag steels yog galvanized. Qib xws liASTM A1008 Kev Tswj Xyuas Kev Nyab Xeebyog tsim rau cov ntawv thov xws li cov khoom tsim khoom, cov khoom siv tsheb, thiab cov rooj tog hlau.
Galvanization txheej txheem thiab Steel Compatibility
Kub-dip Galvanizing (HDG):
Qhov no yog cov txheej txheem galvanization ntau tshaj plaws uas cov hlau yog submerged hauv molten zinc ntawm kwv yees li450 degree (840 degree F). Txoj kev no tsim cov txheej tuab, ruaj zinc txheej uas tiv thaiv corrosion, ua rau nws zoo tagnrho rau kev siv sab nraum zoov thiab cov khoom siv.
Electro-galvanizing:
Txoj kev no suav nrog kev siv zinc los ntawm cov txheej txheem electrochemical, uas ua rau cov txheej txheem thinner thiab smoother piv rau HDG. Nws feem ntau yog siv rau cov ntawv thov uas qhov kev zoo nkauj thiab kev ua tiav du yog qhov tseem ceeb dua, xws li hauv tsheb thiab cov khoom siv.
Standards thiab Specifications
Ntau tus qauv tswj hwm galvanized steel thiab nws cov qib, suav nrog:
ASTM A123: Rau kub-dip galvanized coatings ntawm hlau thiab steel khoom.
ASTM A153 Cov khoom lag luam: Rau galvanized coatings ntawm kho vajtse.
ASTM A653 Cov Khoom Siv Hluav Taws Xob: Rau galvanized ntawv hlau.
Cov khoom ntawm Galvanized Steel
Corrosion Resistance: Lub zinc txheej ua raws li kev txi anode, tiv thaiv cov hlau txawm tias cov txheej yog khawb.
Durability: Nyob ntawm cov txheej thickness,galvanized hlautuaj yeem kav ntev mus rau kaum xyoo yam tsis muaj kev cuam tshuam loj heev.
Lub zog: Lub zog ntawm galvanized steel nyob ntawm qib steel hauv paus, tswj cov khoom siv ntawm cov hlau hauv qab.
Kev siv ntawm Galvanized Steel
Galvanized steel yog siv nyob rau hauv ntau yam lag luam vim nws cov khoom tiv thaiv, suav nrog:
Kev tsim kho: Beams, trusses, thav duab, thiab ru tsev.
Infrastructure: Guardrails, txuas hniav, thiab cov ncej hluav taws xob.
Automotive: Tsheb lub cev thiab cov khoom siv hauv qab.
Ua liaj ua teb: Fencing, grain bins, and water tanks.
Tsev neeg: Khoom siv, HVAC ductwork, thiab rooj tog.
Xaus
Hauv cov ntsiab lus, galvanized steel tuaj yeem tsim los ntawm ntau qib steel, nrog cov zinc txheej muab superior corrosion kuj. Cov qib tshwj xeeb uas siv yog nyob ntawm daim ntawv thov, cov kev xav tau ntawm kev siv tshuab, thiab ib puag ncig kev pabcuam.
