Kukho iindlela zomatshini, iikhemikhali, kunye ne-electrochemical yokususa isikali se-oxide semibhobho yentsimbi ecocekileyo.

Ngenxa yobunzima bokwakheka kwe-oxide yesikali semibhobho yensimbi engenasici, akulula ukususa isikali se-oxide phezu komhlaba, kodwa nokwenza umphezulu ube phezulu ukuya kwinqanaba eliphezulu lokucoceka kunye nokugudiswa.Ukususwa kwesikali se-oxide kwimibhobho yentsimbi ecocekileyo ngokuqhelekileyo kuthatha amanyathelo amabini, enye i-pretreatment, kwaye inyathelo lesibini kukususa umlotha kunye ne-slag.

I-oxide scale pretreatment ye-sanitary stainless steel pipe yenza ukuba isikali se-oxide silahlekelwe, kwaye ke kulula ukususa ngokuchola.Unyango lwangaphambili lunokwahlulwa lube ngolu hlobo lulandelayo: indlela yokunyibilikisa i-alkaline nitrate.I-alkaline yokunyibilika iqulethe i-87% ye-hydroxide kunye ne-13% ye-nitrate.Umlinganiselo wezo zimbini kwityuwa etyhidiweyo kufuneka ulawulwe ngononophelo ukwenzela ukuba ityuwa etyhidiweyo ibe namandla oxidizing anamandla, indawo yokunyibilika, kunye ne-viscosity encinci.Kwinkqubo yokuvelisa, kuphela umxholo we-nitrate ye-sodium awukho ngaphantsi kwe-8% (wt).Unyango luqhutyelwa kwisithando somlilo setyuwa, iqondo lokushisa li-450 ~ 470℃, kwaye ixesha yimizuzu emi-5 ye-ferritic stainless steel kunye nemizuzu engama-30 ye-austenitic stainless steel.Ngokufanayo, i-iron oxides kunye ne-spinels nazo zinokuthi zifakwe i-nitrate kwaye zilahlekelwe yi-iron oxides ene-trivalent, esuswa ngokulula ngokuchola.Ngenxa yefuthe eliphezulu lobushushu, i-oxides ebonakalayo ihlanjululwe ngokuyinxenye kwaye idibanise kwindawo yokuhlambela ngendlela ye-sludge.Ngaphantsi kwesithando somlilo.

Inkqubo yokunyibilika kwealkaline nitrate: ukuthotywa komphunga→ukufudumeza kwangaphambili (150 ~ 250℃, ixesha 20 ~ 30min)→unyango ityuwa etyhidiweyo→ukucima amanzi→ukuhlamba ngamanzi ashushu.Ukunyangwa kwetyuwa etyhidiweyo ayifanelekanga kwiindibano ezinezithuba ze-weld okanye i-crimping.Xa iinxalenye zikhutshwa kwiziko letyuwa elinyibilikisiweyo kunye namanzi acinyiweyo, i-alkali enomsindo kunye nenkungu yetyuwa iya kutshizwa, ngoko ke uhlobo olunzulu lwedon kufuneka lwamkelwe ukuze kucinywe amanzi.Itanki yokucima amanzi angachaphaziyo.Xa amanzi ecima, qala uphakamise amalungu engobozi kwitanki, yima phezu komphezulu othe tyaba, uvale isigqubuthelo setanki, uze uhlise iibhaskithi zamalungu emanzini de zitshone.

I-alkaline potassium permanganate pretreatment: isisombululo sonyango sine-sodium hydroxide 100→I-125g / L, i-sodium carbonate 100→125g/L, potassium permanganate 50g/L, ubushushu isisombululo 95~105℃, ixesha lonyango 2 ~ 4 iyure.Nangona unyango lwe-alkaline ye-potassium permanganate alulunganga njengonyango lwetyuwa olunyibilikisiweyo, inzuzo yalo kukuba ifanelekile kwiindibano ezine-welded seams okanye i-crimping.

Ukukhulula isikali se-oxide, le asidi ilandelayo eyomeleleyo yamkelwe ngokuthe ngqo ukunyangwa kwangaphambili ngendlela yediphu.

Ukuthintela i-asidi ekunyibilikeni kwesiseko sesinyithi, ixesha lokucwiliswa kunye nobushushu be-asidi kufuneka ilawulwe ngokucophelela.