Ukugquma kwe-Electrophoreticiyafana nezinye iindlela zokugquma. Amalungu agqunyiweyo kufuneka aphathwe umphezulu ngaphambi kokugquma. Unyango lomphezulu ngumsebenzi obalulekileyo ekufuneka wenziwe ngaphambi kokugquma. Iindlela ezahlukeneyo zokugquma, izinto ezahlukeneyo kunye neemeko zabo zobuso, ngoko Iinkqubo zonyango ezifunekayo zonyango kunye neendlela azifani. Ayenzi nje kuphela iinkqubo ezahlukeneyo zonyango lomphezulu kunye nomgangatho wonyango kuchaphazela kakhulu umgangatho wokugquma, kodwa neendleko zonyango lomphezulu zinempembelelo enkulu. Ngoko ke, xa siqhuba uyilo lobugcisa, kufuneka kukhethwe indlela yofakelo, izinto eziphathekayo kunye nomgangatho weendawo ezigqunyiweyo, kunye nenkqubo yonyango yomphezulu kunye nendlela eqinileyo, isiphumo esihle sonyango kunye neendleko eziphantsi kufuneka zikhethwe kangangoko kunokwenzeka. .
Kutheni i-electrophoresis inenkqubo yonyango lwangaphambili?
Kwinkqubo yokulungiswa kwangaphambili kwe-electrophoresis, kukho intsebenziswano edibeneyo yokunciphisa, ukususwa kwe-rust, i-phosphating, ukulungiswa kwendawo kunye nezinye iinkqubo. Kunokuthiwa ukunyangwa kwangaphambili kubaluleke kakhulu kwi-electrophoretic coating, ehambelana nokuzinza kwebhafu yepeyinti ye-electrophoretic emva kwe-electrophoresis kunye nomgangatho wefilimu yokwambathisa kumphezulu we-workpiece.
Ukuze kufumaneke ukuqina kunye nokunganyangeki kwe-corrosion yefilimu yokugqoka ye-electrophoretic workpiece, unyango lwe-phosphating lusetyenziswa njenge-pretreatment ye-coating. Unyango lwe-Phosphating (ekwabizwa ngokuba yi-phosphate chemical treatment) yi-teknoloji (ifilimu ye-phosphating) esebenzisa i-dissociation (equilibrium) reaction ye-asidi ye-phosphoric ukukhupha iityuwa zesinyithi ze-phosphate ezinganyibilikiyo kumphezulu we-substrates zetsimbi ezicociweyo (degreased). Umsebenzi wefilimu ye-phosphating kukuphucula ukubambelela kunye nokuxhatshazwa kwe-corrosion yefilimu yokugubungela (i-electrophoretic coating) esetyenziswe kuyo.
Ngokuphathelele ukubambelela, iikristali zefilimu ye-phosphide efunyenweyo iyancibilika kancinane kwindawo yesinyithi, kwaye ukudibanisa kweekristali kulungile. Ukongezelela, indawo engaphezulu iyanda ngenxa yokungalingani kwendawo yeekristale ezininzi, kwaye ukunamathela kwefilimu yokugqoka kuphuculwe. Emva koko, ngokuphuculwa kokubambelela kwifilimu yokugqoka, ukungeniswa kwezinto ezivelisa ukubola kuthintelwe, kwaye ukuchasana kwe-corrosion kuphuculwe (ngokukodwa ukwandiswa kwe-corrosion phantsi kwefilimu yepeyinti kunokuthintelwa).
Ingubo iya kuba yi-blister kunye ne-rust ngexesha elifutshane ngaphandle kwe-phosphating. Amanzi kunye nomoya odlula kwifilimu yokugquma ufikelela kumphezulu womsebenzi ukwenza umhlwa obomvu kwaye udumbe ifilimu yepeyinti. Amanzi kunye nomoya odlula kwifilimu yokugquma ufikelela kwishiti lentsimbi efakwe isinyithi ukwenza umhlwa omhlophe, obuye uphendule ngefilimu yokugquma ukwenza isepha yesinyithi. Amaxesha ambalwa amakhulu, ukwenzela ukuba ifilimu yokugqoka ikhukhumele ngamandla. Ifilimu ye-Phosphating yifilimu enganyibilikiyo eyenziwe kwindawo yesinyithi ngokusabela kweekhemikhali. Ngenxa yokubambelela kwayo kakuhle (ngokomzimba) kunye nokuzinza kweekhemikhali, iphathwa njenge-anti-rust coating substrate ehlala ixesha elide.
Ukuze ufumane ifilimu ye-phosphating egqwesileyo kwaye izinzile kwaye uqinisekise ukubambelela kwayo kunye nokuxhathisa ukubola, ukulawulwa kwe-pretreatment kubaluleke kakhulu. Kwangaxeshanye, kuyimfuneko ukuqonda kakuhle indlela yokusabela esisiseko kunye nezinto zonyango lwe-phosphating.
Ixesha lokuposa: Jul-08-2022
