Rau cov neeg siv khoom siv SPA-C Corten Steel (JIS G 3125 tus qauv), xaiv cov khoom siv vuam tsim nyog yog qhov tseem ceeb kom ntseeg tau tias qhov sib koom ua ke ntawm cov khoom siv corrosion zoo sib xws rau cov khoom siv hauv paus. Lub hauv paus ntsiab lus yogxaiv huab cua-cov khoom siv hluav taws xob tiv taus nrog cov hlau alloy sib xws nrog SPA-C. Kab lus no qhia meej txog cov khoom siv uas tsim nyog tshaj plaws rau kev sib txawv vuam, cov txheej txheem xaiv tseem ceeb, thiab cov lus qhia siv tswv yim.
1. Cov khoom siv vuam zoo tshaj plaws los ntawm txoj kev vuam
Cov txheej txheem vuam sib txawv (feem ntau nyob rau hauv txawv teb chaws tej yaam num) yuav tsum tau tsom consumables los xyuas kom meej weld corrosion kuj thiab txhua yam khoom:
MIG/MAG Vuam (Feem ntau siv): Recommended consumable:ER50-GNiCuCr(huab cua-resistant khoom hlau). Nws cov alloy muaj pes tsawg leeg (Cu: 0.20-0.40%, Cr: 0.40-0.65%, Ni: 0.20-0.40%) matches SPA-C's Cu-Cr-P system, ua kom lub vuam sib xyaw ua ke xeb txheej nrog cov khoom siv hauv paus. Nws yog haum rau nyias mus rau nruab nrab-gauge SPA-C (tsawg dua los yog sib npaug rau 12 hli), nrog zoo arc stability thiab weld hlaws tsim.
SMAW (Welding): Recommended consumable:E7018-G( huab cua- tiv thaiv npog electrode). Cov electrode txheej txheej muaj cov ntsiab lus alloying uas ntxiv Cu thiab Cr thaum lub sij hawm vuam, ua kom cov vuam muaj huab cua tsis zoo thiab qis - qhov kub thiab txias. Nws yog qhov zoo tagnrho rau tuab -gauge SPA-C (Ntau dua lossis sib npaug li 8mm) thiab ntawm - qhov chaw vuam ntawm cov qauv loj (xws li, toj roob hauv pes steel qauv, thav duab muaj).
GTAW (TIG Welding): Recommended consumable:ER50-GNiCuCr(tib yam li MIG/MAG khoom hlau). Rau siab -precision nyias- ntsuas vuam (tsawg dua lossis sib npaug li 6 hli, piv txwv li, cov khoom siv kho kom zoo nkauj), cov hlau no ua kom cov khoom siv hluav taws xob tsawg tsawg thiab cov khoom siv vuam tsis sib xws, kom tsis txhob muaj cov ntsiab lus vuam tsis muaj zog los ntawm cov hlau tsis zoo.
2. Kev xaiv tseem ceeb rau kev tiv thaiv corrosion
Alloy Compatibility: Ua ntej cov khoom siv nrog Cu thiab Cr cov ntsiab lus ze rau SPA-C (Cu: 0.05-0.30%, Cr: 0.30-1.25%). Tsis txhob siv cov khoom siv carbon steel (piv txwv li, ER70S-6, E6013) - lawv tsis muaj cov khoom siv los tiv thaiv corrosion yuav ua rau cov vuam tsis muaj zog corrosion, ua rau ntxov ntxov rusting.
Huab cua Resistance Certification: Xaiv cov khoom siv uas ua tau raws li huab cua- cov qauv tiv thaiv (xws li AWS A5.18 rau MIG hlau, AWS A5.5 rau SMAW electrodes). Tshawb xyuas cov chaw tsim khoom cov ntawv tshaj tawm kom paub meej tias qhov vuam qhov corrosion (tsawg dua lossis sib npaug li 0.02mm / xyoo nyob rau hauv cov huab cua puag ncig) yog piv rau SPA-C.
Environmental Adaptability: Rau cov ntug dej hiav txwv lossis kev lag luam siab - ib puag ncig corrosion, xaiv cov khoom siv nrog cov ntsiab lus Ni siab dua me ntsis (piv txwv li, ER50-GNiCuCr nrog Ni: 0.30-0.40%) txhawm rau txhim kho qhov vuam tsis kam rau Cl⁻ thiab SO₂ yaig.
3. Cov lus pom zoo rau kev siv
Ua ntej- Weld Consumable Storage: Khaws huab cua- tiv thaiv electrodes/wires nyob rau hauv qhuav, noo noo- pov thawj ib puag ncig (cov av noo tsawg dua lossis sib npaug li 60%). Qhuav E7018-G electrodes yuav tsum tau khaws cia rau hauv ib lub thoob uas tuav cov cua sov (100-150 degree) kom tsis txhob muaj txheej txheej ntub dej, uas cuam tshuam rau qhov zoo ntawm vuam.
Vuam txheej txheem Matching: Siv cov khoom siv hluav taws xob qis (1.2-1.8 kJ/mm rau MIG; 1.5-2.5 kJ/mm rau SMAW) kom txo cov hlau tsis muaj hlau hlawv. Tswj interlayer kub tsawg dua los yog sib npaug li 150℃los tiv thaiv cov nplej coarsening nyob rau hauv weld tshav kub-cuam tshuam cheeb tsam, uas tsis muaj zog corrosion kuj.
Ncej -Kev kho Weld: Sib tsoo cov hlaws weld kom tshem tawm spatter thiab ntse npoo. Rau qhov hnyav ib puag ncig, siv cov txheej nyias ntawm Corten Steel rust accelerator rau thaj tsam weld los txhawb cov txheej txheej xeb, kom ntseeg tau tias muaj kev tiv thaiv corrosion nrog cov khoom siv hauv paus.
Hauv cov ntsiab lus, ER50-GNiCuCr (rau MIG/GTAW) thiab E7018-G (rau SMAW) yog cov khoom siv vuam zoo tshaj plaws rau SPA-C Corten Steel. Ua raws li cov txheej txheem xaiv ntawm alloy compatibility thiab huab cua tiv thaiv daim ntawv pov thawj, ua ke nrog cov txheej txheem vuam zoo thiab kev kho tom qab kho, ua kom lub vuam sib koom ua ke corrosion kuj ua tau raws li qhov yuav tsum tau ua.
