Weathering Steel Qib
Cov Khoom Piav Qhia Huab Cua Huab Cua, tseem hu ua corten steel, yog ib hom hlau uas tsim cov txheej txheem oxide tiv thaiv thaum raug cua, muab kev txhim kho corrosion. Muaj ntau ntau qib ntawm weathering steel muaj, txhua tus muaj nws tus kheej cov khoom thiab ...
Hauj lwm lawm
Khoom Description
| Qib | C | Si | Mn | P | S | Cr | Cu | V | Ni |
|---|---|---|---|---|---|---|---|---|---|
| ASTM A242 2 | 0.12 | 0.25–0.75 | 0.20–0.50 | 0.01–0.20 | 0.030 | 0.50–1.25 | 0.25–0.55 | 0.65 | |
| ASTM A588 Cov Lus Qhia Tshwj Xeeb | 0.16 | 0.30–0.50 | 0.80–1.25 | 0.030 | 0.030 | 0.40–0.65 | 0.25–0.40 | 0.02–0.10 | 0.40 |
Cov khoom siv hluav taws xob ntawm huab cua steel nyob ntawm seb cov hlau twg thiab cov khoom tuab npaum li cas.[16][17]
ASTM A242 2
[edit]
Tus thawj A242 alloy muaj lub zog tawm los ntawm 50 kilopounds ib square inch (340} MPa) thiab qhov kawg tensile zog ntawm 70 ksi (480 MPa) rau lub teeb-nruab nrab dov duab thiab daim hlau mus txog 0.75 ntiv tes (19 mm) tuab. Nws muaj lub zog tawm ntawm 46 ksi (320 MPa) thiab qhov kawg lub zog ntawm 67 ksi (460 MPa) rau nruab nrab hnyav dov cov duab thiab daim hlau los ntawm 0.75-1 nti (19-25 mm) tuab. Qhov tuab tshaj plaws dov ntu thiab daim hlau - los ntawm 1.5-4 nyob rau hauv (38-102 mm) tuab muaj yield zog ntawm 42 ksi (290 MPa) thiab lub zog kawg ntawm 63 ksi (430 MPa). ASTM A242 muaj nyob rau hauv Hom 1 thiab Hom 2. Ob leeg muaj kev sib txawv raws li qhov tuab. Hom 1 feem ntau yog siv rau hauv vaj tse, kev tsim kho kev lag luam thiab cov tsheb thauj khoom.[18]Hom 2 steel, uas tseem hu ua Corten B, feem ntau yog siv hauv cov khoom siv hauv nroog, cov neeg caij nkoj lossis cranes.[19]
ASTM A588 Cov Lus Qhia Tshwj Xeeb
[edit]
A588 muaj lub zog tawm los tsawg kawg yog 50 ksi (340 MPa), thiab lub zog tensile kawg ntawm 70 ksi (480 MPa) rau tag nrho cov duab dov thiab phaj tuab txog li 4 hauv (100 mm) tuab. Daim hlau los ntawm 4-5 hauv (102-127 mm) muaj lub zog tawm los tsawg kawg 46 ksi (320 MPa) thiab lub zog tensile kawg yam tsawg kawg nkaus 67 ksi (460 MPa), thiab daim hlau los ntawm 5-8 hauv (127-203 mm) tuab muaj lub zog tawm los tsawg kawg yog 42 ksi (290 MPa) thiab qhov kawg tensile lub zog tsawg kawg yog 63 ksi (430 MPa).
Qib COR-TEN B kuj tau lees paub dav dav. Nws muab qhov sib npaug ntawm lub zog thiab kev tiv thaiv corrosion, ua rau nws haum rau ntau yam kev siv sab nraum zoov thiab kev lag luam.
Ntxiv rau qhov no, muaj qib S355J2W. Qib no tau paub txog nws qhov kev txhim kho toughness thiab weldability, ua rau nws yog qhov kev xaiv zoo tshaj plaws hauv cov txheej txheem fabrication.
Qib SPA-H yog lwm qhov kev xaiv. Nws yog tus cwj pwm los ntawm nws lub zog siab thiab ua haujlwm rau huab cua, ua rau nws tsim nyog rau kev xav tau ib puag ncig.
Tsis tas li ntawd, peb muaj qib zoo li WR50B thiab WR50C. Cov qib no yog tsim los ua kom tau raws li kev lag luam tshwj xeeb thiab muab cov khoom sib txuas tshwj xeeb rau cov ntawv thov sib txawv.
Qib 09CuPCrNi-A kuj tsim nyog hais. Nws yog dav siv nyob rau hauv Suav teb thiab tau qhia tias ua tau zoo nyob rau hauv ntau yam huab cua puag.
Txhua qib ntawm weathering steel tau tsim los ua kom tau raws li cov kev xav tau tshwj xeeb ntawm kev lag luam thiab kev siv sib txawv. Qhov kev xaiv ntawm qib nyob ntawm yam xws li kev npaj siv, ib puag ncig, kev xav tau ntawm kev siv tshuab, thiab cov txheej txheem fabrication.
Piv txwv li, nyob rau hauv architectural tej yaam num uas cov tsos ntawm cov hlau yog ib tug tseem ceeb kev txiav txim siab, qib zoo li ASTM A588 los yog COR-TEN B tej zaum yuav raug xaiv rau lawv muaj peev xwm los tsim ib tug visually txaus siab patina.
Hauv kev tsim kho choj, qhov chaw muaj zog thiab ua haujlwm ntev yog qhov tseem ceeb, qib zoo li ASTM A242 lossis S355J2W yuav nyiam vim lawv cov khoom siv zoo tshaj plaws thiab kev tiv thaiv corrosion.
Hauv cov chaw muaj kev lag luam uas raug rau cov tshuaj hnyav lossis qhov kub thiab txias yog qhov tshwm sim, cov qib uas muaj kev tiv thaiv zoo rau cov xwm txheej no yuav raug xaiv.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias thaum xaiv ib qib ntawm cov huab cua steel, kev tshawb fawb thiab kev sab laj nrog cov kws tshaj lij hauv thaj chaw yog qhov tseem ceeb los xyuas kom meej cov qib uas tau xaiv yog qhov tsim nyog tshaj plaws rau cov kev cai tshwj xeeb.
Hauv kev xaus, ntau qib ntawm weathering steel muaj ntau yam kev xaiv kom tau raws li cov kev xav tau ntawm ntau hom kev siv sib txawv. Kev nkag siab txog cov khoom thiab cov yam ntxwv ntawm txhua qib yog qhov tseem ceeb rau kev txiav txim siab paub thiab ua tiav qhov kev ua tau zoo thiab kev ua haujlwm ntev hauv kev siv cov huab cua steel.
Cim npe nrov: Tuam Tshoj Weathering steel qib lwm tus neeg, Hoobkas
