1. Yuav tsum tau siv huab cua - qib qib vuam consumables
Cov thaiv hlau arc vuam (smaw, cov txheej txheem feem ntau rau SMA570W): Xaiv cov ntawv hluav taws xob uas rov qab SMA570W cov alloy profile. Cov qauv kev lag luam yogAWS A5.5 E8018-g(lossis sib npaug Nyij Pooj Jis Z3211 D5018-g). Cov hluav taws xob no muaj 0.20.20% cu thiab 0.30-0.60% cr, kom ua rau cov khoom weld ib qho khoom siv patina nrog cov hlau hauv paus.
Gas Hlau Arc Vuam (Gmaw): Yog tias siv GMAW, xaiv rauAws A5.18 ER80S - gxov. Zam kev ua kom muaj siab dua- Lub zog consumables (thaum tsis muaj Ru / CRA570W Base hlau khaws nws matina tsaus nti.
Ua ntej -} Cov neeg siv tau: Txheeb xyuas cov neeg muaj ntawv pov thawj cov ntaub ntawv pov thawj kom paub meej tias CU / Cr Ntsiab Lus; Txawm tias muaj kev sib txawv me me (piv txwv li, cu<0.20%) can compromise long-term weathering.
2. Kev tswj nruj nruj ntawm cov kev tawm tshiab thiab cuam tshuam qhov kub
Cov cua sov tawm txawv: Tswj tshav kub tshav kub nruab nrab ntawm15-35 KJ / CM(xam raws li: [Voltage × tam sim no × 60] / [Mus Ncig Ceev (MM / min)]. Rau cov thickinges ntau:
10-15mm daim hlau (SMAW): Siv 3.2mm E8018-get tam sim no rau 10-24-12 cm / min (tshav kub tawm ≈20-25 kj / cm).
20-30 daim hlau (SMAW): hloov mus rau 4.00-180A, voltage 24-2-14 cm / min (tshav kub kub ≈28-32 kj / cm).
Sib Xws Kub Txwv: Tsis txhob tshaj250 Qibntawm vuam kis. Siv phom tiv tauj kub los saib lub haz -}}}}}}}℃temper above temper temper above,, 25 25 25 25 25,, txo qis nws lub zog los ntawm 10-15% (rau<500MPa) and increasing brittleness at low temperatures (e.g., impact energy at -40°C may drop below 30J).
3. Cov Npaj Ua Si Kom Yooj Yim Los Tshem Tawm Cov Tshuaj paug
Tu cov nyiaj: Tshem tawm txhua yam kev paug los ntawm a25mm - dav davNtawm ob sab ntawm Weld sib koom tes (nthuav txog kev sib koom ua ke tsis muaj cov seem uas rub mus rau hauv lub pas dej weld).
Kev tu txoj kev:
Kev sivStainless Hlau Txhuamlossis sandblasting kom tshem cov zeb nplai thiab lub teeb xeb. Zam kom tsis txhob muaj cov roj carbon hlau txhuam - Lawv tawm cov hlau hais tias "xeb noob" ntawm SMA570W nto.
So cov chaw huv nrogacetone lossis isopropyl cawvTxhawm rau tshem tawm cov roj, roj, lossis ntsev seem (tseem ceeb rau cov ntug hiav txwv lossis ib puag ncig kev lag luam, qhov twg cov ntsev ua kom muaj kev xeb).
Ua ntej - Weld Soj Ntsuam: Xyuas kom cov npoo huv si muaj cov tsis muaj peev xwm sib xws yog qhov tsis sib xws metter nrog tsis pom stains; Ib qho kev txwv tsis pub ntxiv yuav tsum tau rov -}} ntxuav ua ntej vuam.
4. Post {{- Weld kev kho kom txhawb nqa PATINA tsim
Tshem Weld Cov Chaw Nyob: Tam sim ntawd tom qab vuam, siv phom stainless hlau los yog rab phom koob kom tshem tawm slag, taw, thiab flux seem. Cov seem no cuab ntos ya raws thiab block oxygen los ntawm reacting nrog reacting nrog cu / cr nyob rau hauv weld hlau {}}}}}}}}}}}} Kev tiv thaiv Patina tsim.
Nruab nrab acidic fluxes: Yog tias siv acidic electrodes (tsis tshua muaj sma570w, tab sis ua tau), so lub chaw weld nrog a5-8% ci dej qab zib (sodium bicarbonate) tovkom neutralize ib qho seem uas muaj acidity. Yaug kom huv si nrog cov dej huv thiab cua - qhuav ove} Cov tawv nqaij qhuav}} cov kua ntoo qhuav {}} tiv taus cov ntsiab.
Zam dhau -} kev sib tsoo: Tsuas z zom cov weld los kho qhov tsis xws luag (piv txwv li, tawg, undercut). Tshaj - kev sib tsoo tshem tawm cov txheej txheej sab nraud ntawm Weld Hlau (uas yog cov nplua nuj nyob hauv CU / CR), exposing} txheej txheej nrog cov huab cua qis tsis kam. Yog tias kev sib tsoo yog qhov tsim nyog, siv tus nplua- grit abrasive (ntau dua los yog sib npaug nrog lub hauv paus hlau kom tsis txhob ntse cov ntxiab noo noo.
5. Tseem Ceeb Tshaj Tawm - weld soj ntsuam
Kev Saib Xyuas Kev Pom: Kos rau Weld rau tsis muaj porosity, kab nrib pleb, qis dua los yog sib npaug rau 0.5 hli), lossis tsis tiav cov ntsiab lus rau kev xeb thiab txo cov qauv kev cai.
Cov Cuab Yeej Siv Neeg Kho (rau cov qauv tseem ceeb): Rau thauj khoom {- Cov kabmob sib xyaw (piv txwv li, Choj Girders), kuaj cov coupons weld kom paub meej:
Tensile Lub zog: Weld tawm tswv yim lub zog loj dua los yog sib luag rau 540MPA (95% ntawm SMA570W lub hauv paus xa hluav taws xob).
Kev Cuam Tshuam Cov Khoom Siv: Loj dua lossis sib npaug ntawm 340 Qib (piv rau SMA570W cov yuav tsum tau ua).
Patina txoj kev tshawb xyuas kev sib tw: Tom qab 3-6 lub hlis ntawm sab nraum zoov kis, soj ntsuam WELD thiab cov hlau sib dhos ua ke. Ib qho kev hnav khaub ncaws tsaus nti / dub dub thoob plaws ob thaj chaw uas qhia tau zoo vuam vuam; Tsis xwm yeem xim (piv txwv li, txiv kab ntxwv xeb ntawm weld) txhais tau tias consumables lossis post - Weld kev kho mob tsis raug.
