Ntawm qhov kub thiab txias, feem ntau cov txheej txheem tshuaj ua kom ceev thiab lub zog tsim hluav taws xob nce ntxiv. Tab sis cov khoom puas tuaj yeem tiv taus qhov kub thiab txias? Hauv kev xyaum, qhov kub siab tshaj plaws hauv ntau cov txheej txheem yog txwv los ntawm cov khoom tsim nyog.Nickel tuaj yeem daws qhov teeb meem.
Thaum xaiv cov khoom siv rau siab - qhov kub thiab txias, 4 yam tseem ceeb tshaj plaws yog lub zog, ruaj khov, tsis muaj kev teb ib puag ncig, thiab kev yooj yim ntawm cov khoom siv.
Raws li qhov kub thiab txias, lub zog ntawm cov hlau txo. Thaum kub siab dua, ntau hom hlau muaj lub zog siab dua 300 series stainless hlau. Stainless hlau ua tau zoo dua li feem ntau ntawm lawv ntawm 540 C. Txawm li cas los xij, npib tsib xee- muaj cov alloys ua tau zoo ntawm qhov kub siab tshaj 650 C. Txawm li cas los xij, creep zog los yog creep fracture zog yog cov khoom tseem ceeb tshaj plaws ntawm qhov kub siab tshaj 540 C.
Metallurgical zog hloov lub sij hawm ntawm qhov kub thiab txias. Qhov nthuav tshaj plaws yog thaum cov hlau tsim ib theem nyuaj thiab nkig thaum cov khoom ua kom tawg zoo li iav. Nickel slows qhov tsim ntawm cov theem no, thaum nickel -chromium- hlau alloys muaj tsawg kawg yog 33 feem pua Ni tsis cuam tshuam.
Cov hlau reacts nrog ib puag ncig ntawm qhov kub siab heev. Nws oxidizes hauv huab cua. Alloys nrog chromium thiab aluminium muab kev tiv thaiv ntxiv. Txo qhov chaw uas muaj cov pa roj carbon monoxide, Ni, thiab silicon pab txo qis carbonization. Cov alloys tshiab uas tau hloov mus rau qhov chaw xav tau tshaj plaws yog tsim thiab sim thaum carbonization ceev (hu ua hmoov av hlau) tshwm sim, thiab tag nrho cov alloys muaj qib Ni siab. Thaum kawg, cov cuab yeej muaj feem cuam tshuam yuav tsum tau tsim, suav nrog hlau shaping thiab vuam, qhov twg npib tsib xee - muaj stainless hlau thiab Ni alloy ua tau zoo heev.
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Lub converter raj yog ua los ntawm cam khwb cia hlau alloy, Nws tuaj yeem siv rau ntau pua txhiab xuab moos nyob rau hauv ib puag ncig carbonized ntawm 800-1000 degrees C. Lawv tuaj yeem siv nrog chav thiab hydrocarbons los tsim hydrogen.
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Radiation raj heats lub cub tawg indirectly. Ntau cov nickel alloys tau siv nrog qhov kub thiab txias li 1150 C, thaum cov hlau tuaj yeem tiv taus qhov kub li 1200 C.
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Lub pob tawb kho cua sov kho qhov chaw hauv qhov cub kho cua sov. Cov npib tsib xee- uas muaj cov alloy xaiv nyob ntawm seb cov cua puas yog oxidative lossis txo. Lawv feem ntau ua haujlwm ruaj khov. |
