Nickel alloys yog qhov kev xaiv zoo tshaj plaws thaum tsim cov khoom siv rau kev siv tseem ceeb, kev ntxhov siab. Cov ntau yam superalloys no tsis tshua muaj zog, ua haujlwm thiab ua haujlwm zoo txawm tias nyob hauv qhov kub tshaj plaws, hnyav tshaj plaws.
Dab tsi yog qhov muaj pes tsawg leeg ntawm nickel alloy?
Thaj, cov khoom muaj nyob rau tag nrho cov nickel alloys yog ... nickel. Cov hlau ruaj khov no muaj kev tiv thaiv zoo heev rau corrosion, oxidation thiab kub, thiab yog cov malleable thiab formable. Tsis xav tias npib tsib xee alloys yog ib qho kev xaiv ruaj khov rau ntau qhov kev lag luam thiab kev lag luam. Qhov tseeb, nws tau kwv yees tias 90 feem pua ntawm tag nrho cov nickel muag txhua xyoo yog mob siab rau ua cov alloys.
Hauv kev tsim cov nickel alloys, npib tsib xee tuaj yeem ua ke nrog ntau cov hlau sib txawv hauv qhov sib txawv los tsim cov khoom siv nrog cov khoom tshwj xeeb. Nov yog qee qhov kev xaiv sib txawv, thiab qee yam ntawm lawv coj:
Titanium: Lub teeb yuag thiab siab zog, ua kom lub zog thiab corrosion kuj ntawm qhov kub thiab txias
Copper: non-magnetic, muaj machinability zoo thiab zoo heev thermal thiab hluav taws xob conductivity
Cobalt: Zoo heev corrosion kuj nyob rau hauv huab cua kub
Chromium: Txhim kho corrosion thiab kev ntxhov siab tawg ua haujlwm
Aluminium: Ntxiv zog thiab txhim khu kev tiv thaiv corrosion
Niobium: nce weldability thiab txhim kho cov khoom siv kho tshuab
Muaj ntau, ntau yam sib txawv nickel alloys thiab cov tshiab yog tsim los yog tsim txhua lub sijhawm. Dab tsi koom ua ke lawv txhua tus yog cov khoom tshwj xeeb uas ua rau lawv tshwj xeeb tshaj yog haum rau kev siv thaum kub heev. Tam sim no cia peb saib qee yam ntawm lawv.
Strong, Extendable, Durable
Cov tawv thiab ntau yam, cov nickel alloys tiv taus corrosion los ntawm ntau cov xov xwm thiab tuav lub zog zoo txawm tias qhov kub siab tshaj 1000 degree. Lawv kuj feem ntau zoo heev ntawm kev ua haujlwm ntawm qhov kub thiab txias, tab sis nws yog lawv cov cua sov uas ua rau lawv nyiam rau cov ntawv thov tseem ceeb.
Feem ntau cov ntaub ntawv muaj zog heev xws li hlau ua brittle thaum machined. Qhov no txhais tau hais tias cov khoom ua los ntawm cov hlau no zoo li yuav muaj lub neej luv luv, kev ntxhov siab tawg ntawm qhov kub thiab txias lossis thaum raug rov ua dua lub voj voog. Qhov no txhais tau tias tam sim ntawd - thiab muaj peev xwm txaus ntshai - tiv thaiv tsis ua haujlwm.
Ntawm qhov tod tes, cov hlau tsis tshua muaj zog xws li tooj liab yog qhov yooj yim heev rau tshuab thiab tsis ua embritted. Txawm li cas los xij, nws deforms sai sai hauv qhov chaw kub. Cov tshuaj tiv thaiv yuav poob nws cov duab, rov ua rau tsis ua hauj lwm tam sim ntawd thiab muaj qhov xwm txheej txaus ntshai.
Nickel alloys yog tshwj xeeb nyob rau hauv uas lawv yog ib qho yooj yim rau tshuab thiab tsim tsis ua nkig; lawv kuj muaj siab zog thiab corrosion kuj. Cov khoom no nyob ruaj khov nyob rau hauv qhov kub thiab txias heev thiab cyclic loads, txuas lawv lub neej thiab ua rau lawv muaj kev nyab xeeb siv.
Hauv lwm lo lus, npib tsib xee alloys ua ke lub zog ntawm cov khoom zoo li hlau (qee zaum me me ntawm cov hlau ntxiv los ua kom nws muaj zog dua) nrog cov ductility thiab machinability ntawm cov khoom xws li tooj liab. Koj tuaj yeem cia siab tias nickel alloy qhov chaw yuav kav ntev li 25-35 xyoo lossis ntau dua, nyob ntawm cov xwm txheej.
