Hom 347 / 347H stainless hlau yog austenitic qib ntawm chromium hlau, uas muaj cov columbium ua cov khoom ruaj khov. Tantalum kuj tseem tuaj yeem ntxiv rau kev ua kom ruaj khov. Qhov no tshem tawm cov nag lossis daus carbide, nrog rau intergranular corrosion hauv cov kav hlau. Hom 347 / 347H stainless hlau kav muaj ntau dua creep thiab kev nyuaj siab rupture zog dua qib 304 thiab 304L. Qhov no ua rau lawv haum rau raug rau rhiab heev thiab intergranular corrosion. Ntxiv mus, kev suav nrog columbium tso cai rau 347 cov kav dej kom muaj kev tiv thaiv corrosion zoo heev, txawm tias zoo dua li ntawm 321 stainless hlau kav. Txawm li cas los xij, 347H steel yog cov pa roj carbon ntau dua hloov ntawm stainless hlau yeeb nkab qib 347. Yog li ntawd, 347H steel tubes muab kev txhim kho kub thiab nkag tau zoo.
Post lub sij hawm: Dec-10-2021