Stainless hlau xeb yuav ua li cas tshem tawm xeb?
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Stainless hlau xeb yuav ua li cas tshem tawm xeb?
# Kev tshem tawm xeb # Kev tshem tawm xeb yog tshem tawm cov oxides thiab xeb ntawm cov hlau nto. Feem ntau yog cov khoom siv xeb thiab tshuaj xeb, tshuaj lom neeg kev lag luam xeb, tseem hu ua pickling xeb tshem tawm, yog siv cov kua qaub, kua qaub tshem tawm kom txo cov hlau nto ntawm cov hlau oxides los ntawm cov tshuaj tiv thaiv rau hlau atoms, txo qhov tshwm sim ntawm oxidation tas li. ntawm hlau xeb.
01
Dab tsi acid yog siv rau kev lag luam xeb tshem tawm?
Sulfuric acid: nws tus kheej yog hom muaj zog oxidation, pickling thiab xeb tshem tawm yuav tsum tau dilute ib feem ntawm cov concentrated sulfuric acid. Sulfuric acid feem ntau yog siv los tshem tawm cov hlau xeb los ntawm kev siv tshuab stripping.
Lus Cim: Kev tshem tawm xeb nrog sulfuric acid yog ib qho yooj yim ua rau "dhau-corrosion" ntawm cov hlau matrix ntawm steel workpiece, ua rau muaj peev xwm ntawm "hydrogen embrittleness", qhov xav tau rau kev ua haujlwm cua sov, hlau ntsev tsis yooj yim rau ntxuav kom huv si. tawm, thiab concentrated sulfuric acid yog ib qho yooj yim ua rau tus kheej raug mob.
② Hydrochloric acid: feem ntau yog nyob ntawm kev sib cais ntawm cov oxide ntawm cov hlau kom tshem tawm. Nws yog ib qho yooj yim rau kev khiav lag luam ntawm chav tsev kub, muaj me me corrosion ntawm hlau nto, ci ntsa iab ntawm workpiece, tsawg hydrogen absorbed los ntawm cov hlau, thiab yooj yim los ntxuav tawm cov hlau ntsev ntawm qhov chaw.
Lus Cim: Kev siv cov kua qaub pov tseg yog qhov nyuaj, tus nqi siab, nag lossis daus ntawm asphyxiating gas, thiab kev siv cov kua qaub kua qaub yog tsawg.
(3) Nitric acid: thaum sib cuag nrog cov hlau, saum npoo ntawm cov hlau no tuaj yeem nrawm, thiab cov khoom siv hluav taws xob ntom nti, thiab cov neeg muaj kev tiv thaiv sab hauv, ua si ib lub luag haujlwm passivation.
Lus Cim: Nitric acid yog ib qho pungent tsw ntawm volatile acid, muaj zog corrosive, tshuaj lom neeg cov tshuaj tiv thaiv nrog hlau yuav tsim teeb meem roj - nitrogen. Ib qho yooj yim tiv thaiv tsis dhau.
Phosphoric acid: phosphoric acid yog nruab nrab lub zog acid, haum rau vuam qhov chaw, cov khoom ua ntej pleev xim rau kev tshem tawm xeb.
Lus Cim: Lub peev xwm tshem tawm xeb ntawm phosphoric acid tsawg, yog li kev tshem tawm xeb ntawm phosphoric acid feem ntau xav tau cua sov.
Organic acids: organic acids rau industrial xeb tshem tawm kuj yog ua los ntawm pickling thiab xeb tshem tawm txoj cai, uas yog yooj yim dua kom tau raws li ib puag ncig yuav tsum tau tshaj inorganic acids. Pom zoo vci-708 ib puag ncig tiv thaiv xeb tshem tawm tus neeg sawv cev, cov organic acid muaj pes tsawg leeg, yuav tsis ua rau "hydrogen embrittle" phenomenon, compound environmental requirements, tsis muaj ntxhiab tsw.
02
Dab tsi yog siv rau industrial xeb tshem tawm?
Kev lag luam derusting tuaj yeem ua tiav raws li qhov xav tau derusting nyhuv thiab xaiv cov txheej txheem derusting.
① Organic acid xeb tshem tawm yog pom zoo rau pickling hlau qhov chaw, steel phaj thiab coils.
② Rau kev tshem tawm xeb uas xav tau kom ua tiav cov txiaj ntsig ntawm kev tshem tawm xeb thiab tiv thaiv corrosion, xws li loj I-beams, steel, xim hlau vuas, steel kav, thiab lwm yam., xeb hloov dua siab tshiab tus neeg saib xyuas yog pom zoo kom hloov xeb rau hauv kev tiv thaiv corrosion. txheej, uas tuaj yeem corroded rau 10 xyoo raws li kev xav.
③ Rau kev tshem tawm xeb ntawm qhov tseeb, nws raug pom zoo tias qhov nruab nrab xeb tshem tawm, PH 7, yuav tsis ua rau muaj qhov tsis zoo ntawm cov hlau nto.
