Kupfeka kwemagetsizvakafanana nedzimwe nzira dzekuputira. Zvikamu zvakaputirwa zvinoda kugadziriswa pamusoro usati waputira. Kurapa pamusoro ibasa rakakosha rinofanira kuitwa usati waputira. Nzira dzakasiyana dzekuputira, zvinhu zvakasiyana nemamiriro azvo pamusoro, saka maitiro anodiwa ekurapa pamusoro haana kufanana. Maitiro akasiyana ekurapa pamusoro uye mhando yekurapa haangokanganisi zvakanyanya kunaka kwepurasitiki chete, asiwo mutengo wekurapa pamusoro une simba guru. Saka, patinoita dhizaini yehunyanzvi, tinofanira kusarudza nzira yekuisa, zvinhu uye mamiriro epamusoro ezvikamu zvakaputirwa, uye maitiro ekurapa pamusoro nenzira ine hunhu hwakasimba, mhedzisiro yakanaka yekurapa uye mutengo wakaderera.
Sei electrophoresis iine nzira yekurapa isati yatanga?
Mukurapa kwe electrophoresis, pane kushanda pamwe chete kwekubvisa mafuta, kubvisa ngura, phosphating, kugadzirisa pamusoro pechinhu nezvimwe. Zvinogona kutaurwa kuti kurapwa kwekutanga kwakakosha mu electrophoretic coating, iyo ine chekuita nekugadzikana kwe electrophoretic pendi bath mushure me electrophoresis uye mhando ye coating film pamusoro pe workpiece.
Kuti firimu rekuputira remuchina we electrophoretic rirambe rakasimba uye richiramba ngura, mushonga we phosphate unoshandiswa senzira yekutanga yekurapa jira. Kurapa ne phosphate chemical (kunozivikanwawo se phosphate chemical treatment) itekinoroji ye (phosphate film) inoshandisa dissociation (equilibrium) reaction ye phosphoric acid kuti isanyungudike pamusoro pesimbi dzakacheneswa (dzakabviswa mafuta). Basa refirimu rekuputira nderekuvandudza kunamira uye kuramba ngura kwefirimu rekuputira (electrophoretic coating) rinoshandiswa pairi.
Nezvekunamatira, makristaro efirimu re phosphide rakawanikwa anonyungudutswa zvishoma pamusoro pesimbi, uye kunamatira kwemakristaro kwakanaka. Pamusoro pezvo, nzvimbo yepamusoro inowedzera nekuda kwekusaenzana kwepamusoro kwemakristaro akawanda, uye kunamatira kwefirimu re coating kunovandudzwa. Zvadaro, nekuvandudzika kwekunamatira kwefirimu re coating, kupinda kwezvinhu zvinogadzira ngura kunodzivirirwa, uye kuramba ngura kunovandudzwa (kunyanya kuwedzera ngura pasi pefirimu re pendi kunogona kudzivirirwa).
Kuputira uku kuchaputika uye kuita ngura munguva pfupi pasina phosphating. Mvura nemhepo inopfuura nepafirimu rekuputira zvinosvika pamusoro pechinhu chebasa kuti zvigadzire ngura dzvuku uye zvifukidze firimu rependi. Mvura nemhepo inopfuura nepafirimu rekuputira zvinosvika papepa resimbi rakarukwa kuti zvigadzire ngura chena, iyo inosanganawo nefirimu rekuputira kuti igadzire sipo yesimbi. Yakakura kakati wandei, zvekuti firimu rekuputira rinowedzera kuzvimba. Firimu rePhosphating ifirimu risinganyungudike rinoumbwa pamusoro pesimbi nemakemikari. Nekuda kwekunamatira kwayo kwakanaka (kwepanyama) uye kugadzikana kwemakemikari, inobatwa se substrate inogara yakasimba yekudzivirira ngura.
Kuti uwane firimu re phosphate rakanaka uye rakagadzikana uye kuve nechokwadi chekuti rinonamira uye rinodzivirira ngura, manejimendi yekurapa kwekutanga kwakakosha zvikuru. Panguva imwe chete, zvakakosha kuti uve nekunzwisisa kwakanaka kwemaitiro ekutanga ekuita uye zvinhu zvekurapa phosphate.
Nguva yekutumira: Chikunguru-08-2022
