1. Muaj plaub txoj kev polishing ntawm ob-theemFlange Hlau: phau ntawv, kho tshuab, tshuaj thiab electrochemical. Lub corrosion tsis kam thiab kho kom zoo nkauj ntawm covflangetuaj yeem txhim kho los ntawm polishing. Cov pa hluav taws xob uas twb muaj lawm ntawm cov hlau uas muaj kev siv hluav taws xob tsis muaj peev xwm siv phosphoric acid thiab chromic anhydride. Nyob rau hauv cov txheej txheem polishing thiab tu, ib co chromium thiab phosphorus yuav raug rho tawm rau hauv dej khib nyiab, ua rau muaj kuab paug rau ib puag ncig.

2. Passivation zaj duab xis yuav tsim nyob rau saum npoo ntawm duplexFlange Hlau, thiab cov oxide zaj duab xis yuav pib yaj. Vim hais tias nto microstructure ntawm lub duplexFlange Hlauyog tsis sib xws, lub convex me ntsis ntawm qhov chaw yog nyiam ua kom yaj, thiab tus lej sib cais yuav siab dua li ntawm qhov concave feem. Kev sib cais thiab tsim ntawm daim nyias nyias yuav luag nyob rau tib lub sijhawm, tab sis lawv cov velocities txawv. Raws li qhov tshwm sim, cov nplaim hluav taws ntawm lub Bi-theem steel flange yog txo, ua rau muaj kev du, ci ci.
3. Qee qhov xwm txheej saum npoo hluav taws xob xws li cov nplaim hluavtaws tuaj yeem sau los ntawm polishing, yog li txhawm rau txhim kho kev nkees ua hauj lwm thiab muaj feem xyuam corrosion tiv taus. Biphase steel flanges muaj ntau dua ob zaug cov paib lub zog ntawm cov hlau me me, thiab muaj zog txaus rau qhov tsis zoo, tshwj xeeb tshaj yog hauv chloride ib puag ncig.