Ob Tempers, Ib Marine Alloy
5083 yog cov khoom ua haujlwm aluminium-magnesium alloy ntawm shipbuilding thiab offshore engineering. Raws li EN 573-3 nws muaj 4.0 mus rau 4.9 feem pua magnesium, 0.40 rau 1.0 feem pua manganese, 0.05 mus rau 0.25 feem pua chromium, thiab cov kev txwv me me rau silicon, hlau, tooj liab, zinc, thiab titanium, nrog rau qhov sib npaug ntawm txhuas. Cov ntsiab lus magnesium muab 5083 nws lub zog siab yam tsis muaj kev kho cua sov, thaum lub manganese thiab chromium tswj cov qauv nplej. H116 thiab H321 yog ob qho tib si uas tsis yog{16}}kub{17}} kho tau cov strain-hardened tempers tsim rau marine phaj, thiab ob qho tib si tshwm nyob rau hauv ASTM B928, cov lus qhia sau rau txhuas phaj siv nyob rau hauv marine kev pab cuam.
H116 thiab H321 txhais tau li cas
H116 yog ib hom kab mob- tawv tawv uas tsim los nrog kev tswj kev ua haujlwm txias thiab thermal keeb kwm kom lub phaj kawg tiv thaiv kev xeb thiab kev cuam tshuam ntawm intergranular hauv dej hiav txwv. Kev npau taws yog txhais los ntawm nws cov kev xyaum ntau lawm es tsis yog los ntawm ib qho kev sib tw zaum kawg, thiab phaj muag raws li H116 yuav tsum xeem dhau kev kuaj corrosion xws li nitric acid poob kev sim ntawm ASTM G67. H321 yog strain hardened thiab ces stabilized nrog ib tug tsawg -kub thermal kho. Stabilization tshem tawm qhov nyiam ntawm cov hlau kom hnov lub sijhawm ua haujlwm ntev, uas ua rau H321 qhov kev xaiv muaj kev vam meej nyob rau hauv kev sib cuag nrog dej hiav txwv.
Mechanical Properties Side by Sab
Rau cov phaj hauv qhov sib txawv ntawm 6 txog 50 hli, EN 485-2 qhia txog tib lub zog tensile chav kawm rau 5083-H116 thiab 5083-H321, nrog lub zog tensile ntawm 305 txog 385 MPa thiab qhov tsawg kawg nkaus 0.2 feem pua pov thawj lub zog ntawm 215 MPa. ASTM B928 teev tib yam tsawg kawg nkaus tensile lub zog thiab lub zog tawm los rau ob qho tib si tempers nyob rau hauv cov thicknesses sib piv, nrog rau elongation ib ncig ntawm 10 mus rau 12 feem pua nyob ntawm qhov ntsuas. Nyob rau hauv kev xyaum, H321 phaj tuaj yeem qhia me ntsis sib xws hauv cov khoom muaj zog vim tias kev kho kom ruaj khov txawm tias tawm ntawm microstructure, thaum H116 phaj muaj nuj nqis rau nws qhov kev ua tau zoo corrosion. Qib hardness thiab qaug zog tus cwj pwm raug kho raws li qhov sib npaug los ntawm feem ntau cov qauv tsim.
Corrosion Resistance thiab Classification pom zoo
Ob leeg tempers tiv thaiv corrosion nyob rau hauv marine atmospheres thiab immersion vim 5083 alloy tsim ib tug ruaj khov passive oxide zaj duab xis. Qhov txawv yog li cas txhua tus npau taws tiv thaiv tawm tsam hauv zos. H116 ua tiav nws qhov kev tiv thaiv los ntawm kev tswj hwm nruj, thiab cov neeg yuav khoom ntawm H116 niaj hnub thov daim ntawv pov thawj zeb qhia cov txiaj ntsig kev ntsuas corrosion. H321 ua tiav zoo sib xws los ntawm kev ruaj khov, uas tiv thaiv nag lossis daus ntawm magnesium - nplua nuj theem uas ua rau intergranular corrosion nyob rau hauv cov khoom sensitized. Kev faib tawm cov koom haum ua haujlwm raws li IACS cov cai yuav tsum lees txais ob qho tib si tempers rau kev tsim lub nkoj, thiab ntau lub nkoj nkoj teev H116 thiab H321 hloov pauv ntawm tib daim duab.
Puas Muaj Ib Tug Hloov Lwm Tus?
Rau feem ntau marine phaj daim ntawv thov, H321 thiab H116 yog sib hloov vim hais tias cov chemistry, lub zog yam tsawg kawg nkaus, thiab corrosion yuav tsum yog tib yam los yog sib npaug. Txoj cai siv tau yog los xyuas qhov tuab, kev tswj xyuas tshwj xeeb, thiab kev pom zoo rau kev faib ua ntej hloov. H116 yog qhov kev xaiv zoo tshaj plaws thaum qhov kev qhia tshwj xeeb xav tau cov ntaub ntawv kuaj corrosion, thaum H321 yog qhov kev xaiv muaj zog thaum cov qauv welded yog annealed lossis kev ntxhov siab-relieved raws li ib feem ntawm fabrication. Thaum ib daim duab kos npe ib tus npau taws, hloov mus rau lwm qhov yuav tsum tau lees paub nrog tus tsim qauv kom traceability thiab cov ntaub ntawv zeb tseem siv tau.
Cov lus nug nquag
Q: Puas yog 5083-H116 thiab 5083-H321 chemically zoo tib yam?
Yog lawm. Ob leeg tempers yog tsim los ntawm tib 5083 alloy nrog tib yam muaj pes tsawg leeg txwv; qhov txawv tsuas yog nyob rau hauv lub thermomechanical ua.
Q: Dab tsi npau suav muaj zog dua?
Tsis yog. EN 485-2 thiab ASTM B928 qhia tib lub zog tensile thiab tawm lub zog tsawg kawg nkaus rau ob qho tib si tempers hauv cov thicknesses sib piv.
Q: Puas tuaj yeem H321 hloov H116 hauv kev tsim lub nkoj?
Feem ntau yog, vim hais tias ob qho tib si tau txais kev pom zoo marine tempers nrog cov khoom sib npaug, tab sis qhov kev hloov pauv yuav tsum tau lees paub nrog tus tsim qauv thiab kev faib cov neeg koom nrog hauv qhov project.
Q: Vim li cas H116 cuam tshuam nrog kev kuaj corrosion?
H116 yog tsim los ntawm kev tswj hwm kev tswj hwm tsim los lav kev tiv thaiv rau exfoliation thiab intergranular corrosion, thiab nws yog feem ntau xa nrog ASTM G67 xeem cov txiaj ntsig ntawm daim ntawv pov thawj zeb.
Q: Dab tsi muab cov hlau siv rau vuam 5083 phaj?
ER5183 thiab ER5356 yog cov txheej txheem muab tub lim rau 5083, thiab lawv tau siv rau ob qho tib si H116 thiab H321 phaj nrog tib lub vuam tsis.
Q: Puas yog kev kho kom ruaj khov hauv H321 puas cuam tshuam rau anodizing lossis pleev xim?
Tsis yog. Tus cwj pwm ntawm ob qho tib si tempers yog zoo tib yam rau anodizing, pleev xim, thiab lwm yam kev tiv thaiv tiav.
