Thaum xaiv Corten Steel rau cov haujlwm, cov neeg siv khoom feem ntau sib piv SPA-C (ib qib Japanese tus qauv, JIS G 3125) thiab ASTM A588 (ib qib Asmeskas tus qauv). Lawv qhov sib txawv tseem ceeb nyob hauvtshuaj muaj pes tsawg leeg optimization, uas txuas ntxiv ua rau muaj kev hloov pauv hauv huab cua tsis kam thiab kev siv dav. Kab lus no qhia meej cov kev sib txawv tseem ceeb no los pab cov neeg siv khoom xaiv kom raug.
1. Core Difference: Tshuaj muaj pes tsawg leeg
Qhov sib txawv tseem ceeb nyob rau hauv hom thiab cov ntsiab lus ntawm cov ntsiab lus alloy, tshwj xeeb tshaj yog qhov sib ntxiv ntawm cov kab lus thiab qhov ntau ntawm cov ntsiab lus tseem ceeb:
ASTM A588 Cov Lus Qhia Tshwj Xeeb: Tsom ntsoov rau Cu-Cr-Ni alloy system nrog nruj ntau yam: Cu (0.25-0.40%), Cr (0.40-0.65%), Ni (tsawg dua lossis sib npaug li 0.40%). Qib K (ib theem ntawm A588) kuj yuav tsum tau Nb/V (tag nrho 0.015-0.060%) rau kev ua kom zoo nplej. Cov ntsiab lus phosphorus (P) yog tswj nruj heev (tsawg dua lossis sib npaug li 0.03%).
SPA-C: Txais Cu-Cr-P alloy system, nrog Cu (0.05-0.30%), Cr (0.30-1.25%), thiab P (0.07-0.15%) ua cov ntsiab lus tseem ceeb alloy. Nws tsis tas yuav tsum tau ntxiv Ni, Nb, lossis V. Qhov ntau ntawm Cr cov ntsiab lus yog dav dua, thiab cov ntsiab lus P yog siab dua li ntawm ASTM A588.
2. Qhov sib txawv ntawm huab cua tiv taus
Ob qib muaj huab cua zoo tiv thaiv vim yog corrosion- inhibiting nyhuv ntawm Cu thiab Cr, tab sis lawv qhov kev ua tau zoo sib txawv hauv ib puag ncig sib txawv:
General Atmospheric Environments (Nyob deb nroog, Inland Areas): Ob leeg ua tau zoo. Tus nqi corrosion txhua xyoo yog 0.01-0.02mm / xyoo, thiab lawv tuaj yeem tsim cov txheej txheem tiv thaiv tus kheej tsis pub dhau 6-12 lub hlis. Tsis muaj qhov txawv txav hauv kev ua haujlwm (20-30 xyoo rau kev siv liab qab).
Hnyav Corrosive Environments (Ntaus ntug dej hiav txwv, Industrial Areas): ASTM A588 muaj qhov zoo. Nws ruaj khov Cu-Cr-Ni piv thiab qis P cov ntsiab lus ua rau tus kheej- tiv thaiv xeb txheej ntau ntom thiab ruaj khov, tiv taus ntsev tsuag (Cl⁻) thiab cov pa taws (SO₂). Txhua xyoo corrosion tus nqi nyob rau hauv ntug dej hiav txwv yog tsawg dua los yog sib npaug rau 0.03mm / xyoo. SPA-C, nrog cov ntsiab lus P siab dua thiab tsis muaj Ni ntxiv, ua rau cov txheej txheem xeb xoob xoob hauv qhov chaw hnyav, ua rau me ntsis corrosion ntau dua (0.03-0.05mm / xyoo) thiab lub neej ua haujlwm luv dua.
Tsawg- Ib puag ncig kub: ASTM A588 (tshwj xeeb yog Qib K) muaj qhov zoo dua qis - qhov kub thiab txias cuam tshuam (Ntau dua lossis sib npaug rau 27J ntawm -40℃rau Qib K). SPA-C qhov qis- qhov kub thiab txias yog qhov tsis zoo (tsawg kawg cuam tshuam lub zog Ntau dua lossis sib npaug ntawm 27J ntawm -20℃), ua rau nws tsis haum rau ntev - siv nyob rau hauv cov cheeb tsam ultra-low-temperature.
3. Cov tswv yim xaiv tswv yim
XaivASTM A588 Cov Lus Qhia Tshwj Xeebrau: ① ntug hiav txwv dej los yog kev lag luam tej yaam num nrog hnyav corrosive ib puag ncig; ② Tsawg- cheeb tsam kub (hauv qab -20℃); ③ tseem ceeb heev load-cov kabmob uas yuav tsum tau muaj zog toughness (xws li, me me txuas hniav, kev txhawb nqa txhua yam). Qib K yog qhov zoo dua rau cov haujlwm uas yuav tsum tau ua kom qis qis.
XaivSPA-Crau: ① Cov qauv sab nraum zoov zoo li qub (piv txwv li, cov phab ntsa toj roob hauv pes, tsis yog- thauj khoom- cov kabmob sib kis) hauv thaj chaw me me; ② Cov phiaj xwm nrog cov peev nyiaj nruj (SPA-C muaj tus nqi kom zoo dua vim qhov yooj yim alloy muaj pes tsawg leeg); ③ Cov phiaj xwm ua raws li cov qauv kev lag luam Japanese.
Hauv cov ntsiab lus, ASTM A588 yog qhov tsim nyog rau qhov hnyav thiab qis - qhov kub thiab txias ib puag ncig vim nws qhov kev ua tau zoo ntawm cov hlau alloy, thaum SPA-C yog tus nqi- kev xaiv zoo rau me me- tej yaam num ib puag ncig. Kev xaiv yuav tsum yog nyob ntawm ib puag ncig, kev tsim qauv, thiab kev siv nyiaj txiag.
