Ntsiab Cai
Galvanized kaujyog ua los ntawm kev kub ceev nruam-dip galvanizing kab: tu → annealing → zinc lauj kaub → cua riam → cua txias → daim tawv nqaij dhau → passivation → recoiling.
Cov riam cua tswj cov txheej hnyav thiab qhov sib xws; spangle tsos yog teem los ntawm da dej chemistry thiab txias xyaum.
Txheej yog xaj raws li chav kawm (piv txwv li Z060-Z275 hauv g / m²) ib GB / T 2518 / EN 10346.
Galvanized coil pabcuam kev tsim kho, kev lag luam teeb, tsheb, kev ua liaj ua teb thiab kev lag luam.
1. Kab lus piav qhia
Kev kub ceev nruam-dip galvanizing kab txheej txheem txias- dov steel kauj rau hauv zinc-coated coil hauv ib kis. Lub substrate yog uncoiled, welded kawg- mus rau - xaus rau kev txuas ntxiv, thiab pub los ntawm ib ntu ntawm cov chaw nres tsheb uas ntxuav, anneal, tsho tiv no thiab ua kom tiav cov sawb ua ntej nws rov qab. Txhua qhov chaw nres tsheb teeb tsa cov cuab yeej ntawm cov khoom kawg - flatness, txheej hnyav, nto tiav los yog spangle tsos.
2. Kauj ruam los ntawm kauj ruam
- Ntxuav:cov sawb yog alkali-degreased, txhuam thiab yaug kom tshem tawm cov roj dov thiab av, yog li cov zinc ntub cov hlau nto.
- Annealing:cov sawb yog rhuab nyob rau hauv ib lub cub tawg tas li nyob rau hauv ib qho chaw tiv thaiv (feem ntau hydrogen-nitrogen), uas txo cov oxides saum npoo thiab rov ua kom cov recrystallised microstructure ntawm qhov txias - dov substrate.
- Zinc lauj kaub:lub annealed sawb nkag mus rau hauv da dej ntawm molten zinc ntawm txog 440-460 degree; me me aluminium ntxiv tswj cov tshuaj tiv thaiv Fe-Zn thiab txheej adhesion.
- Cua riam:siab- cov dav hlau dav hlau nrawm nrawm so cov zinc ntxiv los ntawm ob qhov chaw, teeb tsa qhov hnyav thiab nws qhov sib xws thoob plaws qhov dav.
- Cua txias:lub coated strip yog txias; kev ua kom txias kuj txiav txim siab tsim spangle (tsis tu ncua, minimized los yog xoom spangle ib da dej chemistry thiab txias npaum li cas).
- Daim tawv nqaij dhau thiab ua tiav:lub teeb temper dov txhim kho flatness thiab nto tiav; passivation (chromate{0}}kev xaiv pub dawb) lossis oiling tiv thaiv qhov chaw thaum lub sij hawm cia.
- Recoiling:cov sawb tiav yog kuaj xyuas, rov ua dua, thiab txiav rau daim ntawv lossis hlais kom dav raws li kev txiav txim.
3. Txheej txheej thiab Spangle hom
Txheej yog xaj raws li chav kawm ib GB / T 2518 / EN 10346 - piv txwv li Z060, Z100, Z140, Z180,Z275 (g/m², peb -point nruab nrab, ob sab). Spangle hom muaj xws li li niaj zaus (ib txwm zinc paj), minimized (zoo), tiaj tus thiab xoom spangle; qhov kev xaiv yog qhov pom thiab corrosion- kev txiav txim siab ua tau zoo, thiab tau teev nyob rau hauv kev txiav txim.
Spangle Hom
4. Cov ntawv thov
Galvanized coil yog siv rau hauv kev tsim kho (ru tsev panels, profiles), lub teeb kev lag luam (khoom siv, ducting), automotive (corrosion{0}}cov khoom tiv thaiv), kev ua liaj ua teb thiab nuv ntses (tsev, chaw cia khoom) thiab kev lag luam kev lag luam ( ntim, txee). Paub meej cov chav kawm txheej, qib substrate thiab kev kho saum npoo rau koj daim ntawv thov.
Cov lus nug nquag
Q1. Cov riam cua ua dab tsi hauv kab galvanizing?
Cov riam phom cua tshuab siab - cov roj nrawm hla lub sawb los so cov zinc seem, tswj cov txheej txheej hnyav thiab sib xws.
Q2. Dab tsi yog spangle?
Spangle yog crystalline zinc qauv ntawm txheej txheej; nws qhov loj yog tswj los ntawm da dej chemistry thiab txias (tsis tu ncua, minimised, tiaj tus lossis xoom spangle).
Q3. Cov txheej txheem twg siv rau galvanized kauj?
GB / T 2518 (Tuam Tshoj), EN 10346 (Tebchaws Europe) thiab ASTM A653 (US); paub meej tias tam sim no tsab thiab txheej txheej.
