Uhlobo lokutshiza umgca wemveliso yonyango lwangaphambili
Ukutyalwa kwangaphambili kokutyabeka kubandakanya ukuthambisa (ukunciphisa), ukususwa komhlwa, ukuphosphotha amacandelo amathathu.I-Phosphating yikhonkco eliphakathi, ukuchithwa kunye nokususwa kwe-rust yinkqubo yokulungiselela ngaphambi kokuba i-phosphating, ngoko ekusebenzeni kwemveliso, akufanele sithathe kuphela umsebenzi we-phosphating njengento ekugxilwe kuyo, kodwa kwakhona siqale kwiimfuno zomgangatho we-phosphating, senze umsebenzi omhle ukongeza ukususwa kweoli kunye nomhlwa, ngokukodwa ingqalelo kwimpembelelo efanayo phakathi kwabo.
Ukunciphisa ukudandatheka
Ngophuhliso lweshishini, ukukhuselwa kwendalo kunye nokuphuculwa kweemeko zokusebenza kuye kwaba yinkxalabo eqhelekileyo yabantu.Ngoko ke, imfuno yokusingqongileyo kufuneka ithathelwe ingqalelo xa ukhetha ii-agent.Ngoko ke, ukhetho lwe-oyile yokususa i-oyile lufuna ukulungiswa okulula, amandla okuhlambalaza anamandla, angenayo i-sodium hydroxide, i-silicate, i-OP emulsifier kunye nezinye izinto ezinzima ukuzicoca kwiqondo lokushisa, ukuhlamba lula kwiqondo lokushisa, aliqukethe ityhefu. izinto, musa ukuvelisa iigesi eziyingozi, iimeko ezilungileyo zokusebenza.Ukukhethwa kwe-rust remover kufuna ukufakwa kwabakhuthazi, i-corrosion inhibitors kunye ne-inhibitors, inokuphucula isantya sokususwa kwe-rust, ukukhusela i-workpiece kwi-over-corrosion kunye ne-hydrogen embrittlement, inokuthintela ngcono inkungu ye-asidi.Ngaba ngokukhethekileyo kufanelekile inkungu ye-asidi inhibiting, eyenzekayo kwinkqubo yokuchola inkungu ye-asidi, ukubola kwezixhobo kunye nesityalo, kungekhona nje ukungcolisa okusingqongileyo, kwaye kunokubangela ukubola kwezinyo, ukubomvu kwe-conjunctival yamazinyo, iinyembezi, intlungu, umqala owomileyo, ukhohlokhohlo kunye nezinye iimpawu. , ngoko ngempumelelo inqanda inkungu ye-asidi, kungekuphela nje imfuno yokukhusela indalo, okanye ngenxa yempilo kwiimfuno zabasebenzi.
Ukuhlamba amanzi
Ukuhlamba emva kokususwa kweoli kunye nokususwa kwe-rust, nangona kuyinkqubo encedisayo ngaphambi kokupenda, kufuneka kwakhona kubangele ingqalelo eyaneleyo.Emva kokususwa kweoli kunye nokususwa kwe-rust, umphezulu we-workpiece kulula ukunamathela kwezinye i-non-ionic surfactants kunye ne-CL-.Ukuba ezi zinto zishiyekileyo azicocwanga ngokucokisekileyo, zinokubangela ukuba ifilimu yephosphating ibe bhityile, iziphene zomgca, kunye nephosphating.Ngoko ke, ukuphucula umgangatho wokuhlamba amanzi emva kokususwa kweoli kunye nokususwa kwe-rust, kuyimfuneko ukuhamba ngeendlela ezininzi, iirinses ezimbini, ixesha le-1-2min, kwaye utshintshe rhoqo amanzi ukuze uqinisekise ukuba ixabiso le-PH yamanzi liphakathi kwe-5-7 .
I-Phosphating
Into ebizwa ngokuba yi-phosphating, ibhekisela kwi-workpiece yesinyithi emva kokuba iqulethe unyango lwe-dihydrogen phosphate acid solution, reaction reaction yekhemikhali kunye nomphezulu wayo ukuvelisa ifilimu ye-phosphate ezinzileyo, ifilimu ibizwa ngokuba yifilimu ye-phosphating.Injongo ephambili yefilimu ye-phosphating kukunyusa ukunamathela kwengubo kunye nokuphucula ukuxhatshazwa kwe-corrosion of coating.Zininzi iindlela ze-phosphating, ngokweqondo lobushushu be-phosphating, inokwahlulwa ibe yi-phosphating ephezulu yobushushu (90-98 ℃), i-phosphating yobushushu obuphakathi (60-75 ℃), i-phosphating yobushushu obuphantsi (35-55 ℃) kunye nobushushu obuqhelekileyo. iphosphating.
Ukunyamezela
Itekhnoloji ye-passivation yefilimu ye-phosphating isetyenziswa kakhulu kuMntla Melika nakumazwe aseYurophu.Itekhnoloji ye-passivation isekelwe kwiimpawu zefilimu ye-phosphating ngokwayo.Ifilimu ye-phosphating incinci, ngokuqhelekileyo kwi-1-4G / m2, ubuninzi abukho ngaphezu kwe-10g / m2, indawo ye-pore yamahhala inkulu, kwaye ukuxhatshazwa kwe-corrosion yefilimu ngokwayo kulinganiselwe.Abanye nakwinkqubo yokomisa kwi-rust ekhawulezayo etyheli, emva kokuba i-phosphating i-passivation ivaliwe unyango, inokuba yifilimu ye-phosphating pore evezwe nge-oxidation yensimbi, okanye ukwakheka kwe-passivation layer, ifilimu ye-phosphating inokudlala ukuzaliswa, i-oxidation, yenza ifilimu ye-phosphating izinzile umoya.
Ukomisa ifilimu ye-phosphating
Ukomisa ifilimu ye-phosphating inokudlala iindima ezimbini, kwelinye icala, kukulungiselela inkqubo elandelayo yokususa amanzi phezu kwefilimu ye-phosphating, ngakolunye uhlangothi, kukuphucula ngakumbi ukuxhatshazwa kwe-corrosion yefilimu. emva kokugquma.
Ukuseka umgca we-coating pretreatment, uyilo lwenkqubo kufuneka lugqitywe ngaphambi kokuyila, ukuveliswa kunye nokufakwa kwezixhobo ezingekho phantsi.Ngoko ke, ukuyila inkqubo sisiseko somgca wemveliso, kwaye indlela echanekileyo nefanelekileyo iya kuba nefuthe elihle ekusebenzeni kwemveliso kunye nomgangatho wemveliso.
Isetyenziselwa zonke iintlobo zepeyinti yomsebenzi, ezinye iimodeli zinokwenziwa ngokwezifiso.
Iimveliso ezinxulumeneyo
-
Umgca wokuvelisa i-Automobile cab electrophoresis
Ipeyinti ye-Electrophoretic ngokubanzi ibandakanya iinkqubo ezine zangaxeshanye 1. I-Electrophoresis: phantsi kwesenzo sentsimi yombane ethe ngqo, i-colloidal particles positive and negative charged to negative, positive direction movement, also known as swimming.2. I-Electrolysis: ukusabela kokunciphisa i-oxidation kuqhutyelwa kwi-electrode, kodwa i-oxidation kunye nokunciphisa i-phenomenon yenziwa kwi ...
