Nkag siab txog ASTM B409 Khoom
ASTM B409 / ASME SB 409yog ib qho kev qhia tshwj xeeb tsim los ntawm American Society for Testing and Materials (ASTM) rau nickel-hlau-chromium alloy daim hlau, nplooj ntawv, thiab strips siv nyob rau hauv ntau yam high-temperature thiab corrosion-resistant daim ntaub ntawv. Cov khoom siv no feem ntau yog siv rau hauv kev lag luam xws li kev ua tshuaj lom neeg, roj thiab roj, kev tsim hluav taws xob, thiab cov chaw hauv dej hiav txwv vim nws cov khoom siv zoo heev thiab ua haujlwm rau huab cua.
Kev sib xyaw
Nickel (Ni): Muab kev tiv thaiv corrosion zoo heev thiab lub zog kub kub.
Hlau (Fe): Muab cov qauv kev ncaj ncees thiab txhua yam muaj zog.
Chromium (Cr): Txhim kho oxidation tsis kam thiab corrosion kuj.
Ntxiv cov ntsiab lus xws li molybdenum, titanium, aluminium, thiab carbon tej zaum yuav muaj nyob rau hauv me me kom ntxiv dag zog rau cov khoom tshwj xeeb.
ASTM B409 suav nrog Cov Qib Tseem Ceeb
- Incoloy 800 (UNS N08800).: Paub txog nws lub zog zoo thiab ua haujlwm zoo heev rau oxidation thiab carburization ntawm qhov kub thiab txias.
- Incoloy 800H (UNS N08810): Zoo ib yam li Incoloy 800 tab sis nrog kev tswj cov pa roj carbon ntau dua rau kev txhim kho qhov kub thiab txias.
- Incoloy 800HT (UNS N08811): Ib qho kev tshaj tawm ntawm Incoloy 800H nrog ntxiv txhuas thiab titanium rau kev txhim kho qhov kub thiab txias.
ASTM B409 Cov Khoom Siv Khoom
- High-Temperature Strength: Cov alloys tuav lawv lub zog txhua yam thiab cov qauv kev ntseeg siab ntawm qhov kub siab, ua rau lawv haum rau cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab lwm yam kev siv kub.
- Corrosion Resistance: Lub xub ntiag ntawm npib tsib xee thiab chromium muab kev tiv thaiv zoo rau ntau hom kev xeb, suav nrog pitting, crevice corrosion, thiab kev ntxhov siab corrosion tawg.
- Oxidation Resistance: Cov alloys no tsim ib txheej tiv thaiv oxide thaum raug kub, uas tiv thaiv oxidation ntxiv thiab degradation ntawm cov khoom.
Daim ntawv thov
- Kev Siv Tshuaj thiab Petrochemical: Rau cov khoom siv xws li cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov hlab ntsha siab uas yuav tsum muaj kev tiv thaiv corrosion thiab lub zog.
- Lub Hwj Chim Muaj Zog: Hauv cov khoom xws li cov raj superheater, cov raj reheater, thiab cov raj cua sov uas ua haujlwm ntawm qhov kub thiab txias.
- Kev Lag Luam Roj thiab Roj: Rau cov tubing downhole, subsea Cheebtsam, thiab lwm yam khoom siv raug rau qhov chaw hnyav.
- Marine Applications: Hauv seawater txias tshuab, li qub, thiab fittings qhov twg tiv thaiv marine corrosion yog qhov tseem ceeb.
