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Dab tsi yog super hlau stainless

Date:Jun 10, 2019

Thaum xaus ntawm lub xyoo pua 20, stainless hlau "super" qeb tau tsim hauv tsev thiab txawv teb chaws. Cov ntawv sib txawv muaj cov lus txhais sib txawv ntawm cov hlau tsis muaj zog. Qee qhov kev nyeem hais qhia tias kev ua haujlwm siab steel hlau tseem hu ua super-stainless hlau; qee qhov kev nyeem ntawv ntseeg tias high-alloy stainless hlau yog hu ua super-stainless hlau; qee cov ntawv nyeem ntseeg hais tias super-stainless hlau kuj suav nrog qhov ua tau zoo, Qhov tshwj xeeb xav tau rau qee qhov tsis tshua muaj hlau stainless, xws li super 304H chrome-nickel austenitic stainless hlau; qee cov ntaub ntawv ntseeg tias super-stainless hlau hais txog pitting kuj sib npaug PREN tus nqi ≥ 35 (ferritic stainless hlau) lossis ≥ 40 (austen High-alloyed high-performance stainless hlau hauv stainless hlau thiab duplex stainless hlau; qee cov ntawv nyeem ntxiv ntseeg tias super- stainless hlau yuav tsum suav nrog ultra-high huv, ultra-siab uniformity, ultra-zoo qauv, ultra-siab saum npoo zoo, thiab zoo heev tiv taus rau kev tshaj tawm hauv zos kev ua haujlwm corrosion, cov txheej txheem zoo kev tsim khoom thiab zoo li ntawd.

super stainless steel

2. Cov yam ntxwv ntawm super stainless hlau

Nws muaj qhov zoo dua qhov tshwjxeeb tsim qauv tshaj li plaub hom stainless hlau;

Nws muaj qib siab ntawm kev pom tseeb;

Uniform Cov qauv zoo sib xws (cov khoom xyaw, koom haum thiab cov yam ntxwv);

Nws muaj kev ua tau zoo dua li plaub yam ntawm steel hlau nyob rau hauv ib puag ncig hnyav;

■ Muaj cov txheej txheem tsim khoom zoo;

Nws muaj tus nqi ua haujlwm siab;

3. Cov ntsiab lus txhais ntawm super hlau stainless

■ Super stainless hlau yog ib hom ntawm cov hlau tsis huv, ib qho ntawm cov hlau-alloys nrog cov ntsiab lus Cr ntawm 12-30%.

Super stainless hlau yuav tsum muaj ntau dua 12% Cr, tab sis cov ntsiab lus Cr feem ntau yog ≤ 30%;

■ Super stainless hlau tsis yog hlau-npib tsib xee hlau ua hauj corrosion-resistant alloy, vim hais tias cov ntsiab lus ntawm Ni hauv cov hlau-npib tsib xee hlau ua xeb-resistant alloys yog> 30%.

Ni + Fe ≥ 50%; yog li rau Ni-muaj super stainless hlau, tus nqi ntawm Ni yuav tsum ≤ 30%;

■ Super stainless hlau yuav tsum muaj kev ua tau zoo dua nyob rau hauv cov chaw ib puag ncig hnyav, xws li kev tiv thaiv kev tiv thaiv hauv zos xws li pitting corrosion

Nws tuaj yeem raug cim los ntawm pitting ua haujlwm sib npaug PREN =% Cr + 3.3 (% Mo) +16 (% N). Feem ntau super austenitic stainless hlau

Lub PREN ntawm super duplex stainless hlau yuav tsum ≥40, thiab PREN ntawm super ferritic stainless hlau yuav tsum ≥35.

Super stainless hlau rau kev siv tshwj xeeb yuav tsum muaj qhov tsis zoo ntawm qhov txuas tsis muaj zog ntawm kev ua tau zoo tseem ceeb.

Piv txwv li, super martensitic stainless hlau yuav tsum tau weldable "mos martensitic stainless hlau"; super kub austenite tsis yog

Stainless hlau yuav tsum tawg los ntawm qhov teeb meem nkag ntawm 600 ° C lossis ntau dua thiab 300 bar kev ntxhov siab.



Tug: Yuav ua li cas Hnav-resistant hlau yuav siv tau thiab yuav ua li cas kom lawv?

Tom ntej: Yuav ua li cas los daws qhov vuam deformation thiab hlawv cov xaim hlau tsis xeb