Cov txheej oxide nyob rau saum npoo ntawm kub dov stainless hlau coated phaj feem ntau yog tuab. Yog hais tias nws tsuas yog tshem tawm los ntawm cov tshuaj pickling, nws yuav tsis tsuas yog nce lub sij hawm pickling thiab txo cov pickling efficiency, tab sis kuj nce tus nqi pickling ntau heev. Yog li ntawd, lwm txoj kev yuav tsum tau siv los ua tus pab txhais tau tias ua ntej kho cov phaj steel. Muaj peb txoj hauv kev ua ntej kev kho mob rau pickling:

1. Tua blasting

Kev txhaj tshuaj peening yog siv dav siv tshuab dephosphorization txoj kev tam sim no. Lub hauv paus ntsiab lus yog siv cov cuab yeej txhaj tshuaj tua kab mob txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau, nws, nws raug nquahu koj yuav tsum siv cov xuab zeb) nws yog qhov tsim nyog yuav tsum tau siv cov tshuaj tua kab. Tom qab txhaj tshuaj peening kev kho mob, ib feem ntawm oxide txheej raug tshem tawm, thiab cov qauv ntawm cov seem oxide txheej ntawm lub rooj tsavxwm nto ua ntu thiab xoob, uas yog qhov zoo rau cov txheej txheem tom qab pickling.

2. Kev kho alkali leaching

Alkali leaching kev kho mob yog oxidative alkaline leaching thiab txo alkaline leaching. Lub oxidation-hom alkali leaching kuj hu ua "ntsev da dej txoj kev". Alkaline CrO3, thiab vim qhov hloov pauv ntawm cov qauv thiab ntim ntawm oxide txheej, oxide txheej yuav poob. Kev txo qis alkaline leaching yog hloov cov hlau tsis sib haum xws li hlau, npib tsib xee, chromium thiab lwm yam hlau tsis muaj kuab lom hauv cov oxide txheej rov qab rau cov hlau thiab cov oxides uas tsis muaj nqi los ntawm cov muaj zog txo tus neeg sawv cev NaH, thiab ua rau cov oxide txheej tawg thiab poob, yog li shortening lub sij hawm pickling, txhim kho tag nrho cov efficiency.

Nws yog tsim nyog sau cia tias stainless hlau clad daim hlau yuav ua rau ib tug tej yam kev mob ntawm Cr6+ pa phem thaum lub sij hawm kev kho mob ntawm oxidative alkali leaching. Kev txo qis alkaline leaching kev kho tuaj yeem tshem tawm qhov teeb meem ntawm Cr6+ cov pa phem, tab sis nws cov khoom tseem ceeb, NaH, tsis tuaj yeem tsim nyob rau hauv Suav teb. Tam sim no, feem ntau siv txoj hauv kev hauv Suav teb yog poov tshuaj permanganate oxidation hom alkali leaching kev kho mob, thaum txo hom alkali leaching kev kho feem ntau siv txawv teb chaws.

3. Neutral ntsev electrolysis

Cov txheej txheem nruab nrab ntsev electrolysis siv Na2SiO4 aqueous tov raws li cov electrolyte. Stainless hlau zaj duab xis-coated phaj tuaj yeem dhau los ntawm cov hluav taws xob hluav taws xob ntawm cathode thiab anode, tsis tu ncua hloov cov cathode thiab anode, thiab tshem tawm cov txheej txheej oxide los ntawm kev ua tam sim no. Cov txheej txheem ntawm cov txheej txheem ntsev tsis qab ntsev electrolysis yog raws li qhov tseeb tias qhov nyuaj-rau-kua oxides ntawm chromium, manganese, thiab hlau nyob rau hauv oxide txheej yog oxidized rau high-qib soluble ions, yog li dissolving oxide txheej; Cov hlau nyob rau hauv lub roj teeb yog oxidized rau hauv ions, thiaj li hais tias cov oxide txheej txuas rau saum npoo yog tev tawm.