Dab tsi yog super duplex khoom?
Super duplexyog ib lub sij hawm luv luv rau tsev neeg ntawm cov hlau tsis zoo stainless hlau tsim nrog ib ncig ntawm 25% chromium cov ntsiab lus hauv cov hlau pleev xim. Raws li lub npe duplex qhia, tsev neeg ntawm cov alloys no muaj ib qho microstructure ua los ntawm ob qho tib si austenitic thiab ferritic nplej ntawm hlau. Qhov xwm txheej duplex no muab Super Duplex qhov tshwj xeeb ua ke ntawm lub cev thiab cov khoom siv kho tshuab.
Keeb kwm ntawm Super Duplex Materials
Tus thawj duplex stainless hlau yog tsim nyob rau hauv Sweden rau siv nyob rau hauv lub sulfite ntawv kev lag luam. Cov alloys thaum ntxov no tau tsim los tawm tsam cov teeb meem corrosion uas tshwm sim hauv kev lag luam vim yog cov dej chloride-cov kabmob txias. Txawm li cas los xij, thaum cov hlau tsis muaj duplex no tau ua pov thawj los ua kev txhim kho zoo hauv kev ua haujlwm, lawv tsis tau raws li txhua qhov kev xav tau. Yog li ntawd, xav tau kev hloov tshiab ntxiv.
Qhov kev tsim kho tshiab ntawd tau siv daim ntawv ntawm super duplex stainless hlau. Thawj alloy ntawm qhov ntau,Ferralium 255, was developed by Langley Alloys itself in the 1960s. However, the term would not be used until the 1980s, when it was used to describe highly alloyed, high-performance Duplex steel with a pitting resistance equivalent of >40 (raws li Cr% + 3.3Mo% + 16N%). Ib tug xov tooj ntawm lwm qib tau tsim tom qab. Txij thaum ntawd los, muaj ntau qhov kev txhim kho hauv cov khoom siv, suav nrogSuper Duplex F61, uas yog launched nyob rau hauv 1969.
Kev siv tswv yim ntawm Super Duplex Stainless Hlau
Ua tsaug rau nws cov qib siab ntawm chromium, hom tshiab ntawm duplex stainless hlau no muab kev ua haujlwm zoo rau cov kua qaub, kua qaub chloride thiab cov tshuaj caustic, nrog rau lwm yam kev puas tsuaj rau ib puag ncig hauv cov tshuaj lom neeg / petrochemical, pulp thiab ntawv. Super duplex stainless steels feature superior kev nyuab siab corrosion rau cov tsoos duplex alloys, nrog rau kev sib tsoo zoo dua thiab kev ua haujlwm zoo dua li lwm hom hlau - suav nrog duplex alloys.
Niaj hnub no, super duplex cov ntaub ntawv feem ntau yog siv nyob rau hauv daim ntawv thov xws li twj, li qub, fasteners, pipework, connectors, ntxiv rau roj thiab roj Cheebtsam nyob rau hauv lub petrochemical / tshuaj, pulp, thiab ntawv industries.
Langley Alloys stocks tag nrho ntau yam ntawm super duplex khoom, nrog rau cov khoom tuav txog li 16 "(406.2mm) txoj kab uas hla, phaj mus txog 3" thickness, ntxiv rau cov kav dej, flanges thiab fittings los ntawm peb cov saw hlau.
Cov no muaj nyob rau hauv Ferralium 255 (UNS S32550, F61), SAF2507 (UNS S32750, F53) thiab S32760 (F55, Zeron 100).
