GH4738 yog dab tsi?
GH4738 yog dab tsi?
GH4738 yog qhov kub-kub alloy feem ntau siv hauv kev tsim cov khoom hauv qhov chaw kub kub xws li aerospace xyaw.
Cov alloy yog Ni-Cr-Co nag lossis daus hardening deformed high-temperature alloy nrog kev pab cuam kub txog li 815 degree. Nws cov tshuaj muaj pes tsawg leeg muaj xws li carbon, silicon, manganese, chromium, nickel, txhuas, molybdenum, hlau, sulfur, phosphorus, titanium, tooj liab, zirconium thiab boron. Qhov sib ntxiv ntawm cov ntsiab lus no ua rau GH4738 muaj peev xwm ua kom muaj kev sib zog ua kom muaj zog thiab tsim cov 'theem (ib theem ntxiv). Nyob rau tib lub sijhawm, cov ciam teb nplej tau ntxuav thiab ntxiv dag zog los ntawm kev ntxiv boron thiab zirconium ntsiab.
Tsis tas li ntawd, GH4738 nthuav tawm cov txiaj ntsig siab zog thiab qaug zog ua haujlwm hauv qhov kub ntawm 760 degree ~ 870 degree. Hauv cov roj turbine cua hauv qab 870 degree, nws pom zoo oxidation tsis kam thiab corrosion kuj. Qhov no ua rau nws zoo tagnrho rau cov khoom xws li turbine disks, cov hniav ua haujlwm, kub-kub fasteners, nplaim taws, shafts thiab turbine casings. Cov ntaub ntawv tseem ceeb ntawm cov khoom muaj xws li txias-dov strips thiab kub dov daim hlau, kav dej, strips, xov hlau, forgings thiab bolt fasteners, thiab lwm yam.
Raws li cov ntsiab lus, GH4738 yog lub hnub nyoog-hardening high-temperature alloy uas feem ntau siv nyob rau hauv aerospace cav rotating qhov chaw thiab lwm yam teb. Nws nthuav tawm cov khoom siv zoo heev thiab kev tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv qhov chaw kub kub.
