Galvanized hlau
Galvanized steel yog carbon steel coated nrog zinc los ntawm kub-dip galvanizing, tsim cov corrosion{1}}cov txheej txheem uas ua rau cov hlau ntev ntev. Cov txheej zinc muab kev tiv thaiv thiab kev tiv thaiv kev txi rau cov hlau substrate.
Tsis pub dhau EN 10346 tsev neeg, DX51D thiab DX54D yog galvanized txias- cov qib steel dov nrog cov yam ntxwv sib txawv tsim los rau cov xwm txheej sib txawv.
Paub meej Mechanical sib piv
| Metric | xwm 51d | xwm 54d |
|---|---|---|
| Yield zog | ~ 140-300 MPa | ~ 120-220 MPa |
| Tensile zog | ~ 270-500 MPa | ~ 260-350 MPa |
| Elongation | Ntau dua lossis sib npaug li 22% | Ntau dua lossis sib npaug li 34-36% |
| Daim ntawv thov zoo tshaj plaws | General fabrication | Sib sib zog nqus daim duab thiab complex forming |
DX54D feem ntau qhia tau hais tias qis yield thiab tensile lub zog tab sis ho elongation ntau dua li DX51D, uas txhais ua ntau dua kev muaj peev xwm uas tsis tshua muaj kev pheej hmoo ntawm deg splitting thaum raug.
Metallurgical thiab txheej txheem tus cwj pwm
Ob qib pib raws li txias- dov coils uas yog annealed ua ntej galvanizing los kho cov ductility thiab txo cov kev ua haujlwm txias. Thaum ob qho tib si nthuav tawm ferritic microstructure, DX54D lub hom phiaj ua tau zoo dua me ntsis kev sib zog ua kom tawv thiab elongation tus cwj pwm, ua kom yooj yim rau kos rau hauv cov duab nyuaj.
Fabrication Challenges thiab cov kev coj ua zoo tshaj plaws
tsim
- DX54D: Excels hauv kev sib sib zog nqus nqus, stamping, thiab dabtsi yog khoov qhov twg cov yas loj deformation yuav tsum tau - ua rau cov neeg tsim qauv los thawb qhov nyuaj ntxiv.
- DX51D: txhim khu kev qha rau kev khoov ib txwm, txiav- mus rau - ntev, thiab nruab nrab txoj haujlwm ua haujlwm.
Tooling
DX54D txoj kev txhim kho formability tso cai rau cov radii nruj dua tab sis yuav tsum tau ua tib zoo saib xyuas cov cuab yeej tshem tawm thiab cov nyiaj them rov qab rau qhov tseeb ntawm qhov geometry.
Vuam
Vuam galvanized steels feem ntau yuav tsum tswj cov zinc ntawm cov pob qij txha kom tsis txhob muaj porosity thiab vuam fumes; ob qho tib si DX51D thiab DX54D ua raws li tus qauv me me steel kev coj nrog cov kev xav zoo sib xws.
Corrosion thiab Long -Lub Sij Hawm Ua Haujlwm
Thaum ob qib yog coated nrog ib tug zoo tib yam zinc chav kawm ntawv (xws li, Z275), corrosion kuj feem ntau cuam tshuam los ntawm txheej thickness thiab ib puag ncig es tsis yog cov qib steel. Xaiv hom txheej txheej (HDG, GA, prepainted) yog qhov tseem ceeb rau kev ua haujlwm ntev - nyob rau hauv qhov chaw corrosive lossis ntug hiav txwv.
Phau Ntawv Qhia Txog Kev Xaiv Engineering
| Engineering Xav tau | Qib Qib |
|---|---|
| Precision sib sib zog nqus kos duab | xwm 54d |
| Tsawg tus nqi dav dav fabrication | xwm 51d |
| Cov qauv tsim | xwm 51d |
| Tight tolerances ntawm complex duab | xwm 54d |
NtawmGNEE STEEL, peb muab ntau yam khoom zoo - zoo galvanized steel, suav nrogDX51D Z275thiabDX54D Z275nrog zoo ib yam mechanical kev ua tau zoo thiab txheej zoo.
Peb cov khoom lineup kuj suav nrogDX52D, DX53D, txias- dov coils, thiab prepainted (PPGI/PPGL)cov kev xaiv, txhawb nqa los ntawm kev txhawb nqa thiab txhim khu kev qha rau kev lag luam thoob ntiaj teb.
Mechanical Properties ntawm DX Qib (EN 10346)
| Qib | Txheej | Txuj | Yield zog Re (MPa) | Tensile zog Rm (MPa) | Elongation A80 (min %) | r90 (min) | n90 (min) |
|---|---|---|---|---|---|---|---|
| xwm 51d | Z, ZA, ZF | TS EN 10346 | - | 270 - 500 | 22 | - | - |
| xwm 52d | Z, ZA, ZF | TS EN 10346 | 140 - 300 | 270 - 420 | 26 | - | - |
| xwm 53d | Z, ZA, ZF | TS EN 10346 | 140 - 260 | 270 - 380 | 30 | - | - |
| xwm 54d | Z, ZA, ZF | TS EN 10346 | 120 - 220 | 260 - 350 | 36 | 1.6 | 0.18 |
| xwm 56d | Z, ZA, ZF | TS EN 10346 | 120 - 180 | 260 - 350 | 39 | 1.9 | 0.21 |
| xwm 57d | Z, ZA | TS EN 10346 | 120 - 170 | 260 - 350 | 41 | 2.1 | 0.22 |
