1. Dab tsi ua rau NC20K14 thiab GH4738 nickel alloys haum rau siab -kev siv kub?
Teb:
Ob leeg NC20K14 thiab GH4738 yog npib tsib xee-raws li superalloys tsim los rau huab cua kub thiab kev ntxhov siab. Lawv pom muaj kev nkag siab siab, zoo heev oxidation thiab corrosion kuj, thiab ruaj khov txhua yam khoom ntawm qhov kub siab tshaj 700-800 degree. Cov alloys no feem ntau yog siv rau hauv cov roj turbines, aerospace engine Cheebtsam, thiab siab -cov khoom siv kub.
2. Inconel 738 piv rau Waspaloy li cas ntawm kev ua tau zoo?
Teb:
Inconel 738: Cov nag lossis daus-nickel hardened-chromium-cobalt superalloy nrog kev nkag tau zoo heev, qaug zog, thiab kev ntxhov siab- tawg tsis kam. Feem ntau siv rau turbine hniav, discs, thiab combustion chambers.
Waspaloy: Tsis tas li yog npib tsib xee-raws li superalloy nrog lub peev xwm kub dua thiab lub zog zoo dua me ntsis ntawm qhov kub siab heev (txog ~ 760 degree), feem ntau siv hauv siab - kev ua haujlwm dav hlau cav thiab cov khoom siv dav hlau.
Ob lub alloys muab oxidation zoo heev thiab thermal stability.
3. Dab tsi yog cov ntawv thov rau nickel-raws li superalloy rods xws li NC20K14, Inconel 738, thiab Waspaloy?
Teb:
Cov pas nrig no tau siv dav rau:
Gas turbine thiab dav hlau cav Cheebtsam (cov hniav, discs, shafts)
High -kub kev lag luam machinery (kub qhov chaw, tshav kub exchangers)
Aerospace structural Cheebtsam yuav tsum muaj zog heev thiab oxidation kuj
Cov cuab yeej tsim hluav taws xob uas muaj kev nkag siab siab thiab qaug zog ua haujlwm yog qhov tseem ceeb
4. Yuav ua li cas nickel-raws li pas nrig piv rau cov pa ib puag ncig steel bars nyob rau hauv siab - kub daim ntawv thov?
Teb:
Nickel-raws li rods (superalloys) tuav lub zog txhua yam, nkag siab, thiab corrosion kuj ntawm qhov kub siab uas cov pa hlau tsis muaj zog thiab tuaj yeem oxidize lossis corrode. Cov kab hlau puag ncig yog tsim rau nruab nrab- daim ntawv thov kub, tab sis lawv tsis pom zoo rau ntev - lub sij hawm raug tshaj ~ 500-600℃, tshwj xeeb tshaj yog nyob rau hauv oxidizing los yog corrosive ib puag ncig.
5. Dab tsi yuav tsum tau xav txog thaum xaiv lub siab -kub npib tsib xee-raws li pas nrig?
Teb:
Cov ntsiab lus tseem ceeb suav nrog:
Kev khiav hauj lwm kub thiab thermal cycling tej yam kev mob
Yuav tsum muaj txhua yam khoom (lub zog tensile, qaug zog lub neej, creep kuj)
Corrosion thiab oxidation ib puag ncig (cua, combustion gases, ntsev, acids)
Fabrication xav tau (machining, vuam, sib sau)
Tus nqi piv rau kev ua tau zoo piv rau steel lossis lwm yam alloys
