Video: Vim li cas nickel ntxiv rau stainless hlau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nickel yog qhov tseem ceeb ntawm kev sib koom ua ke hauv 300 series stainless hlau qib. Lub xub ntiag ntawm npib tsib xee tshwm sim hauv kev tsim cov qauv "austenitic" uas muab cov qib no lawv lub zog, ductility thiab toughness, txawm nyob rau ntawm qhov kub thiab txias. Nws kuj ua rau cov khoom tsis sib nqus.
Raws li txoj cai, vim li cas nickel siv hauv stainless hlau?
Stainless hlau : Lub luag hauj lwm ntawm npib tsib xee . Ntau tshaj li ob feem peb ntawm lub ntiaj teb npib tsib xee ntau lawm yog siv los tsim stainless hlau . Raws li cov khoom siv alloying, npib tsib xee txhim khu cov khoom tseem ceeb ntawm stainless hlau xws li formability, weldability thiab ductility, thaum nce corrosion kuj nyob rau hauv tej yam kev siv.
Ib sab saum toj no, dab tsi yog qhov txiaj ntsig ntawm kev ntxiv chromium thiab npib tsib xee hauv stainless hlau? Lub corrosion kuj yog vim tsim ntawm tus kheej-kho passive txheej ntawm Chromium Oxide rau ntawm qhov chaw stainless hlau . Nickel (Ni): Nickel yog ntxiv nyob rau hauv loj, tshaj li ntawm 8%, mus rau siab Chromium stainless hlau los tsim cov chav kawm tseem ceeb tshaj plaws ntawm corrosion thiab kub resisting hlau.
Dhau li ntawm no, vim li cas nickel ntxiv rau hlau?
Nickel (2-20%): Lwm yam alloying tseem ceeb rau stainless hlau, npib tsib xee yog ntxiv ntawm tshaj 8% cov ntsiab lus rau siab chromium stainless hlau . Nickel nce lub zog, cuam tshuam lub zog thiab toughness, thaum tseem txhim kho kev tiv thaiv oxidization thiab corrosion. Nws kuj ntxiv lub zog thiab nce corrosion kuj.
Qhov feem pua ntawm nickel yog nyob rau hauv stainless hlau?
Nws muaj nyob nruab nrab ntawm 16 thiab 24 feem pua chromium thiab txog li 35 feem pua nickel, nrog rau cov pa roj carbon thiab manganese me me. Feem ntau ntawm 304 stainless hlau yog 18-8, lossis 18/8, stainless hlau, uas muaj 18 feem pua chromium thiab 8 feem pua nickel.
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