Duplex steel yog hais txog ib tsev neeg ntawm stainless hlau uas muaj ob-theem microstructure uas muaj ob qho tib si austenitic (lub ntsej muag-centered cubic crystal qauv) thiab ferritic (lub cev-centered cubic crystal qauv) theem. Cov qauv dual-theem no tau ua tiav los ntawm kev sib xyaw tshwj xeeb uas muaj xws li chromium, npib tsib xee, molybdenum, thiab nitrogen.
Feem ntau cov duplex stainless hlau muaj nyob rau hauv UNS S3XXX series, qhov "S" sawv cev rau stainless, thiab cov lej qhia tshwj xeeb alloy compositions. Ob-theem microstructure imparts ib qho kev sib xyaw ntawm cov khoom tsim nyog, ua duplex steel haum rau ntau yam kev siv. Qee qhov tseem ceeb ntawm cov hlau duplex muaj xws li:
1.Corrosion Resistance: Duplex steel muaj zoo heev corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv hnyav ib puag ncig muaj chlorides. Qhov no ua rau nws tsim nyog rau kev siv tshuaj lom neeg, roj thiab roj, thiab kev siv dej hiav txwv.
2.High Strength: Piv rau austenitic stainless hlau, duplex steel muaj zog dua, ua rau nws tsim nyog rau cov ntawv thov uas yuav tsum tau muaj zog txhua yam.
3.Zoo Toughness thiab Ductility: Duplex steel tuav zoo toughness thiab ductility, txawm nyob rau hauv qis kub. Qhov kev sib xyaw ua ke ntawm cov khoom no muaj txiaj ntsig hauv cov ntawv thov uas cov khoom siv yuav raug rau qhov sib txawv ntawm qhov sib txawv thiab qhov kub thiab txias.
4.Stress Corrosion Cracking Resistance: Duplex steel muaj kev ua haujlwm zoo rau kev ntxhov siab corrosion cracking, ib hom corrosion uas tuaj yeem tshwm sim nyob rau hauv kev sib xyaw ua ke ntawm tensile kev nyuaj siab thiab ib puag ncig corrosive.
5.Cost-Effective: Thaum duplex steel yuav kim dua li cov pa austenitic stainless hlau, nws cov yam ntxwv kev ua tau zoo feem ntau pom zoo rau tus nqi, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas corrosion kuj thiab lub zog tseem ceeb heev.
Common duplex stainless hlau qib suav nrogDuplex 2205 (UNS S32205)thiab duplex 2507 (UNS S32750). Cov qib no tau siv dav hauv kev lag luam xws li kev ua tshuaj lom neeg, kev tshawb nrhiav roj thiab roj, kev lag luam sab nrauv thiab dej hiav txwv, thiab kev tsim cov ntaub ntawv thiab ntawv.
Post lub sij hawm: Nov-27-2023