Akunakuphepheka ukuba umphezulu wombhobho wexande uya kufakwa ngeoli, eya kuchaphazela umgangatho wokususwa kwe-rust kunye ne-phosphating. Emva koko, siya kuchaza indlela yokukhutshwa kweoli kumphezulu wetyhubhu ye-rectangular engezantsi.
(1) Ukucoca isinyibilikisi sezinto eziphilayo
Isebenzisa ikakhulu izinyibilikisi zendalo ukunyibilikisa i-saponified kunye ne-oyile engafakwanga ukuze isuse amabala e-oyile. Izinyibilikisi ezisetyenziswa ngokuqhelekileyo zibandakanya i-ethanol, i-petroli yokucoca, i-toluene, i-carbon tetrachloride, i-trichlorethylene, njl. I-solvents esebenzayo ngakumbi i-carbon tetrachloride kunye ne-trichlorethylene, engayi kutshisa kwaye ingasetyenziselwa ukususwa kweoli kumaqondo aphezulu okushisa. Kufuneka kuqatshelwe ukuba emva kokususwa kweoli nge-solvent ye-organic, ukususwa kweoli eyongezelelweyo kufuneka kwakhona kuqhutywe. Xa i-solvent iguquguquka kumphezulu weityhubhu yoxande, ngokuqhelekileyo kukho ifilimu encinci esele, enokususwa kwiinkqubo ezilandelayo ezifana nokucoca i-alkali kunye nokususwa kweoli ye-electrochemical.
(2) Ukucoca i-electrochemical
Ukususwa kweoli ye-Cathode okanye ukusetyenziswa okunye kwe-anode kunye ne-cathode kusetyenziswa ngokuqhelekileyo. Irhasi yehydrogen eyahlulwe kwicathode okanye igesi yeoksijini eyahlulwe kwi-anode ngokusabela kwe-electrochemical reaction, ishukunyiswa ngomatshini sisisombululo esiphezu komhlaba.ityhubhu yoxandeukukhuthaza i-oyile ibala ukubaleka kumphezulu wesinyithi. Ngexesha elifanayo, isisombululo sitshintshana ngokuqhubekayo, esilungele ukusabela kwe-saponification kunye ne-emulsification yeoli. Ioli eseleyo iya kuhlukaniswa ukusuka kwindawo yesinyithi phantsi kweempembelelo zamabhubhu ahlukeneyo ahlukeneyo. Nangona kunjalo, kwinkqubo ye-cathodic degreasing, i-hydrogen idla ngokungena kwintsimbi, ibangele i-hydrogen embrittlement. Ukuze kuthintelwe i-hydrogen embrittlement, i-cathode kunye ne-anode zihlala zisetyenziselwa ukususa ioli ngenye indlela.
(3) Ukucocwa kwealkaline
Indlela yokucoca esekelwe kwisenzo sekhemikhali ye-alkali isetyenziswa ngokubanzi ngenxa yokusetyenziswa kwayo okulula, ixabiso eliphantsi kunye nokufumaneka lula kwezinto eziluhlaza. Ekubeni inkqubo yokuhlamba i-alkali ixhomekeke kwi-saponification, i-emulsification kunye neminye imisebenzi, i-alkali enye ayinakusetyenziselwa ukufezekisa oku ngasentla. Iintlobo ngeentlobo zamacandelo zidla ngokusetyenziswa, kwaye ngamanye amaxesha izongezelelo ezifana ne-surfactants. I-alkalinity imisela iqondo lokusabela kwe-saponification, kwaye i-alkalinity ephezulu inciphisa ukuxinana komphezulu phakathi kwe-oyile kunye nesisombululo, okwenza i-oyile ibe lula ukumilisela. Ukongeza, i-agent yokucoca ehlala phezu komhlabaicandelo lomngxuma oluxandeinokususwa ngokuhlanjwa kwamanzi emva kokuhlamba i-alkali.
(4) Ukucoca umphezulu
Yindlela esetyenziswa ngokubanzi yokususa i-oyile ngokusebenzisa iimpawu ze-surfactant ezifana nokuxinana komphezulu ophantsi, ukumanzisa okulungileyo kunye nekhono elinamandla lokumisa. Ngokusebenzisa i-emulsification ye-surfactant, i-mask yobuso obuhlangeneyo obunamandla athile yenziwe kwi-interface yeoli-amanzi ukuguqula imeko ye-interface, ukwenzela ukuba iinqununu zeoli zihlakazwe kwisisombululo samanzi ukwenza i-emulsion. Okanye ngentshukumo yokunyibilika kwe-surfactant, ibala leoli elinganyibilikiyo emanzini kwiityhubhu yoxandeiyanyibilika kwi-surfactant micelle, ukuze udlulisele ibala leoli kwisisombululo samanzi.
Ixesha lokuposa: Aug-15-2022