Seamless alloy steel yeeb nkab khoomASTM A335 P91, seamless steel yeeb nkab siv nyob rau hauv boiler raj, tshav kub exchanger raj thiab lwm yam lag luam, yuav siv tau raws li steel kav rau high-temperature superheaters thiab reheaters nyob rau hauv subcritical thiab supercritical boilers nrog phab ntsa kub ≤625 ° C, raws li zoo raws li phab ntsa High-temperature headers thiab cov kav dej nrog qhov kub thiab txias ≤600 ℃ kuj tseem siv tau los ua cov khoom siv hluav taws xob hluav taws xob hluav taws xob hluav taws xob thiab cov roj av tawg chav rau cua sov.
ASTM A335 P91 yog cov hlau kub kub uas yog cov hlau tsis muaj chromium-molybdenum. Nws yog dav siv nyob rau hauv cov kav dej thiab cov khoom siv nyob rau hauv qhov kub thiab txias ib puag ncig, xws li petrochemical, hluav taws xob fais fab, nuclear fais fab nroj tsuag thiab lwm yam kev lag luam. Cov khoom tseem ceeb ntawm cov khoom no yog chromium, molybdenum, tooj liab, manganese, silicon, phosphorus, sulfur thiab lwm yam khoom. Cov ntsiab lus ntawm chromium thiab molybdenum yog qhov siab, uas tuaj yeem txhim kho qhov kub thiab txias tsis kam thiab oxidation tsis kam ntawm cov khoom.
ASTM A335 P91 cov ntaub ntawv muaj cov khoom siv zoo heev thiab tseem tuaj yeem tuav lub zog zoo thiab tawv nqaij nyob rau hauv qhov kub thiab txias ib puag ncig. Cov khoom siv kuj tseem tiv taus oxidation, uas tuaj yeem ua haujlwm tau zoo ntawm cov kav dej thiab cov khoom siv. Tsis tas li ntawd, cov khoom siv kuj muaj kev vuam zoo, ua rau kev tsim kho thiab kev saib xyuas yooj yim.
Vim tias cov khoom siv ASTM A335 P91 muaj cov khoom zoo heev, nws tau siv dav hauv qee qhov kub thiab txias ib puag ncig. Piv txwv li, nyob rau hauv kev lag luam petrochemical, cov kav dej thiab cov khoom siv ua los ntawm ASTM A335 P91 tuaj yeem tiv taus cov tshuaj yaig thiab corrosion nyob rau hauv qhov kub thiab txias, ua kom muaj kev nyab xeeb ntawm cov khoom siv. Hauv kev lag luam hluav taws xob thiab cov chaw tsim hluav taws xob nuclear, cov kav dej thiab cov khoom siv ua los ntawm ASTM A335 P91 tuaj yeem tiv taus qhov corrosion thiab yaig ntawm cov pa thiab dej vapor thiab lwm yam xov xwm nyob rau hauv qhov kub thiab txias, ua kom cov khoom siv ua haujlwm zoo.