Nickel yog cov khoom siv hlau zoo tagnrho rau ntau qhov chaw hnyav corrosive xws li kub, kub siab, siab concentration lossis tov nrog impurities hauv kev lag luam tshuaj, roj av, tsis-ferrous hlau smelting, aerospace, nuclear zog thiab lwm yam kev lag luam. Ntxiv Cr, Mo, Cu, W thiab lwm yam corrosion-resistant hlau ntsiab rau npib tsib xee tuaj yeem tau nickel-based corrosion-resistant alloy nrog zoo heev corrosion kuj. Piv nrog rau lwm txoj kev vuam, kev siv submerged arc welding muaj qhov zoo ntawm cov vuam dilution ntau dua, ruaj khov arc combustion, du weld nto thiab tsis muaj arc glare. Nyob rau hauv lub vuam nickel-raws li corrosion-resistant alloys, tej zaum yuav muaj teeb meem xws li vuam kub tawg nyiam, weld porosity, thiab intergranular corrosion nyiam ntawm welded pob qij txha. Yog li ntawd, cov nram qab no yuav tsum tau them sai sai rau thaum lub sij hawm ua:
1. Vuam hlau thiab flux
Txhawm rau tiv thaiv qhov tshwm sim ntawm thermal tawg, ib qho kev sib dhos tsim nyog yuav tsum tau txais los ntawm cov txheej txheem, thiab yuav tsum xaiv cov kab me me, tab sis qhov teeb meem tseem ceeb yog xaiv cov khoom siv vuam tsim nyog. Nws tuaj yeem siv tib lub vuam hlau raws li MIGA vuam, thiab cov flux uas phim cov hlau thiab cov hlau hauv paus yuav tsum raug xaiv kom raug. Feem ntau siv cov fluxes yog IncoFlux44, IncoFlux5 thiab IncoFlux6. Flux yog hygroscopic thiab yuav tsum tau muab cia rau hauv lub thawv qhuav.
2. Daim ntawv sib koom
Nws daim ntawv sib koom ua ke zoo ib yam nrog daim ntawv sib koom ua ke ntawm MIGA vuam. Kev xaiv ntawm daim ntawv sib koom ua ke yuav tsum txo cov hlau molten, txo cov vuam deformation thiab cov kev ntxhov siab seem, thiab ob chav V-shaped grooves yuav tsum xaiv ntau li ntau tau. Txhua yam ntawm V-shaped lossis V-shaped nraub qaum phaj ib leeg-sab vuam taub hau yog tsim rau vuam daim hlau nrog lub thickness tsawg dua 25 hli. U-shaped zawj thiab ob chav U-shaped zawj yog tsim rau cov phaj siab tshaj 20m lossis tuab dua.
3. Kev ntxuav ntawm vuam thaum ua tiav
Cov txheej txheem no yog ib qho kev ntsuas tseem ceeb heev los tiv thaiv cov kab nrib pleb, tshwj xeeb tshaj yog porosity. Cov av thiab roj tuaj yeem ntxuav nrog chav degreasing lossis acetone, xim tuaj yeem ntxuav nrog alkali thiab cov tshuaj ntxuav tshwj xeeb, thiab cov cim kos tuaj yeem ntxuav nrog methanol.
4. Preheating thiab kev kho cua sov ua ntej
Rolled npib tsib xee-raws li alloys feem ntau tsis tas yuav tsum tau pre-welding preheating, thiab kev kho cua sov tom qab vuam tsis pom zoo, tab sis qee zaum tom qab vuam kev kho cua sov yuav tsum tau ua kom ntseeg tau tias intergranular corrosion tsis tshwm sim thaum siv. Rau ntxiv dag zog rau cov hlau uas tau dhau los khoov, kos duab txias lossis lwm yam kev sib sau ua ke, kev kho cua sov yuav tsum tau ua tom qab vuam. Rau ntxiv dag zog rau npib tsib xee-raws li alloys nrog complex qauv, thiaj li yuav zoo txo welding kev nyuaj siab, pre-weld preheating yog pab tau, tab sis pre-heating tsis tuaj yeem hloov tom qab vuam kev kho cua sov.
Peb lub tuam txhab tuaj yeem muab tauInconel 625 FlangesASTM B164 Monel 400 Bar thiabHastelloy C22 Capillary Tubethiab lwm yam nickel-based alloy khoom nyob rau hauv ntau qib thiab cov duab. Yog tias tsim nyog, txais tos hu rau peb los ntawm email.
