Thaum lub sijhawm tuav, kev sib dhos, vuam sib tsoo, khawb av, pleev xim, pleev xim, vuam slag, thiab sib xyaw yog qhia. Cov tshuaj no cuam tshuam rau qhov chaw zoo ntawm cov hlau tsis muaj tshuaj, txo nws tuaj yeem ua rau cov khoom lag luam corrosive, thiab ua rau muaj kev sib tw, thiab cuam tshuam rau kev tawg.
Stainless hlau tso tsheb hlau luam, vim tias tau nqa tshuaj chemical, muaj cov kev xav tau siab rau kev tiv thaiv cov khoom thauj khoom. Raws li cov npoo zoo ntawm kev ua lag luam hauv cov hlau stainless hlau yog cov tsis zoo, nws yog ib txwm ua kom ua kev ua tshuab, tshuaj lom neeg, lossisElectrolytic PolishingOn stainless hlau daim phiaj, khoom siv, thiab cov khoom siv ua ntej tu, pickling, thiab passivating los txhim kho cov corrosion tsis kam ntawm stainless hlau.
Cov zaj duab xis passive ntawm cov hlau tsis muaj zog thiab yuav tsum tsis txhob suav hais tias yog ib qho kev tsim kom muaj corrosion tab sis theej qhov tsim ntawm cov txheej txheem tiv thaiv kev tiv thaiv. Nws zoo li yuav puas nyob rau hauv muaj cov neeg sawv cev uas txo qis (xws li chloride ions) thiab tuaj yeem tiv thaiv thiab kho nyob rau hauv muaj cov oxidants (xws li huab cua (xws li huab cua).
Thaum stainless hlau nthuav tawm rau huab cua, ib daim ntawv ua yeeb yaj kiab oxide.
Txawm li cas los xij, zaj duab xis no cov khoom tiv thaiv tsis txaus. Los ntawm acid pickling, qhov nruab nrab tuab ntawm 10μm ntawm lubStainless Hlau Ntoyog corroded, thiab cov tshuaj lom neeg ntawm cov kua qaub ua rau kev sib cais ntawm cov chaw tsis kho siab dua lwm cov chaw nyob. Yog li, pickling ua rau tag nrho saum npoo zoo li ib qho kev sib npaug sib npaug. Qhov tseem ceeb, los ntawm pickling thiab passivation, hlau thiab nws cov oxides, nws cov oxides, tshem cov txheej chromium-depreted thiab enriching nto nrog chromium. Raws li cov kev ua dhau los ntawm oxidants, ua tiav thiab ruaj khov rau cov neeg ua yeeb yaj kiab no, nrog rau lub peev xwm ntawm noble hlau, txhim kho corrosion tawm ruaj khov.
Lub Sijhawm Post: Nov-28-2023