Ukwambathisa nge-electrophoreticiyafana nezinye iindlela zokugquma. Iindawo ezigqumayo kufuneka ziphathwe ngomphezulu ngaphambi kokugquma. Unyango lomphezulu ngumsebenzi obalulekileyo ekufuneka wenziwe ngaphambi kokugquma. Iindlela ezahlukeneyo zokugquma, izixhobo ezahlukeneyo kunye neemeko zazo zomphezulu, ngoko ke iinkqubo kunye neendlela zonyango lomphezulu ezifunekayo azifani. Iinkqubo ezahlukeneyo zonyango lomphezulu kunye nomgangatho wonyango azichaphazeli nje kuphela umgangatho wokugquma, kodwa neendleko zokugquma umphezulu zinempembelelo enkulu. Ke ngoko, xa senza uyilo lobuchwephesha, kufuneka sikhethe indlela yokufaka, izinto kunye nemeko yomphezulu weendawo ezigqumayo, kunye nenkqubo yokugquma umphezulu kunye nendlela enamandla, isiphumo esihle sonyango kunye neendleko eziphantsi kangangoko kunokwenzeka.
Kutheni i-electrophoresis inenkqubo yangaphambi konyango?
Kwinkqubo yangaphambi konyango lwe-electrophoresis, kukho intsebenziswano efanayo yokususa amafutha, ukususa umhlwa, i-phosphate, ukulungiswa komphezulu kunye nezinye iinkqubo. Kunokuthiwa unyango lwangaphambi konyango luyimfuneko kakhulu kwi-electrophoretic coating, enxulumene nokuzinza kwe-electrophoretic paint bath emva kwe-electrophoresis kunye nomgangatho wefilimu yokugquma kumphezulu we-workpiece.
Ukuze kufunyanwe ukuqina kunye nokumelana nokugqwala kwefilimu yokugquma yesixhobo somsebenzi se-electrophoretic, unyango lwe-phosphating lusetyenziswa njengonyango lwangaphambi kokugquma. Unyango lwe-phosphate (olukwaziwa ngokuba lunyango lwekhemikhali ye-phosphate) yiteknoloji (yefilimu yokugquma) esebenzisa i-dissociation (equilibrium) reaction ye-phosphoric acid ukuze kukhawuleziswe iityuwa zesinyithi ze-phosphate ezinganyibilikiyo kumphezulu we-substrates zesinyithi ezicociweyo (ezingatshiyo). Umsebenzi wefilimu yokugquma kukuphucula ukunamathela kunye nokumelana nokugqwala kwefilimu yokugquma (i-electrophoretic coating) esetyenziswa kuyo.
Ngokuphathelele ukunamathela, iikristale zefilimu ye-phosphide efunyenweyo zinyibilika kancinci kumphezulu wesinyithi, kwaye ukunamathela kweekristale kulungile. Ukongeza, indawo yomphezulu iyanda ngenxa yokungalingani komphezulu weekristale ezininzi, kwaye ukunamathela kwefilimu yokugquma kuyaphucuka. Emva koko, ngokuphuculwa kokunamathela kwefilimu yokugquma, ukungena kwezinto ezivelisa ukugquma kuyathintelwa, kwaye ukumelana nokugquma kuyaphucuka (ingakumbi ukwanda kokugquma phantsi kwefilimu yepeyinti kunokuthintelwa).
Ingubo iya kuphuma amadyungudyungu kwaye ibe ngumhlwa kwixesha elifutshane ngaphandle kwe-phosphate. Amanzi nomoya odlula kwifilimu yokugquma ufikelela kumphezulu wento yokusebenza ukuze enze umhlwa obomvu kwaye avuthulule ifilimu yepeyinti. Amanzi nomoya odlula kwifilimu yokugquma ufikelela kwishidi lentsimbi eligayiweyo ukuze enze umhlwa omhlophe, ophinda uphendulane nefilimu yokugquma ukuze enze isepha yesinyithi. Inkulu kambalwa, ukuze ifilimu yokugquma ikhukhumale ngamandla. Ifilimu ye-phosphate yifilimu enganyibilikiyo eyenziwe kumphezulu wesinyithi nge-chemical reaction. Ngenxa yokunamathela kwayo kakuhle (ngokomzimba) kunye nokuzinza kweekhemikhali, iphathwa njengesiseko sokugquma esihlala ixesha elide.
Ukuze ufumane ifilimu ye-phosphating egqwesileyo nezinzileyo kwaye uqinisekise ukuba inamathela kwaye iyamelana nokugqwala, ulawulo lonyango lwangaphambi konyango lubaluleke kakhulu. Kwangaxeshanye, kubalulekile ukuba nolwazi olufanelekileyo ngendlela esisiseko yokusabela kunye nezinto zonyango lwe-phosphating.
Ixesha lokuthumela: Julayi-08-2022
