Kungani i-valve i-Galvanized Plating, i-Cadmium plating, i-Chrome Plating, i-Nickel Plating

I-Galvanized Plating

I-Zinc izinzile emoyeni owomile futhi akulula ukushintsha umbala.Emanzini nasemoyeni oswakeme, ihlangana ne-oxygen noma i-carbon dioxide yakhe i-oxide noma ifilimu ye-alkaline zinc carbonate, engavimbela i-zinc ukuthi ingaqhubeki nokufakwa nge-oxid futhi idlale indima yokuvikela.

I-Zinc isengozini enkulu yokugqwala kuma-asidi, ama-alkali nama-sulfide.Isendlalelo esinothayela ngokuvamile siyadlula.Ngemva kokudlula ku-chromic acid noma isisombululo se-chromate, ifilimu ye-passivation eyakhiwe akulula ukusebenzisana nomoya omanzi, futhi amandla okuvimbela ukugqwala athuthukiswa kakhulu.Ezingxenyeni zasentwasahlobo, izingxenye ezinodonga oluncane (ukujiya kodonga <0.5m) kanye nezingxenye zensimbi ezidinga amandla aphezulu okusebenza, ukukhishwa kwe-hydrogen kufanele kwenziwe, futhi izingxenye ze-alloy yethusi nezethusi akumele zikhishwe i-hydrogen.

Amandla ajwayelekile e-zinc awalungile, ngakho-ke i-zinc coating iyi-anodic coating yezinsimbi eziningi.

Isicelo: Kwenza ukugalela uthayela kuvamise ukusetshenziswa ezimeni zomoya kanye nezinye izindawo ezivumayo.Kodwa hhayi ngenxa yezingxenye zokungqubuzana.

I-Cadmium Plating

Izingxenye ezixhumene nomkhathi wasolwandle noma emanzini olwandle nasemanzini ashisayo angaphezu kuka-70 ℃, ukunamathela kwe-cadmium kuzinzile, kunokumelana nokugqwala okuqinile, i-lubricity enhle, incibilika kancane kakhulu ku-dilute hydrochloric acid, kodwa kulula kakhulu ukuncibilika ku-nitric acid., ayincibiliki ku-alkali, futhi ama-oxide ayo awancibiliki emanzini.

I-cadmium yokugqoka ithambile kune-zinc coating, i-hydrogen embrittlement ye-coating incane, futhi ukunamathela kunamandla, futhi ngaphansi kwezimo ezithile ze-electrolytic, ukugqoka kwe-cadmium okutholiwe kuhle kakhulu kunokugqoka kwe-zinc.Kodwa igesi ekhiqizwa lapho i-cadmium incibilika inobuthi, futhi usawoti we-cadmium oncibilikayo nawo unobuthi.Ngaphansi kwezimo ezijwayelekile, i-cadmium iyinalethi ye-cathodic ensimbi kanye ne-anodic coating endaweni yasolwandle kanye nezinga lokushisa eliphezulu.

Isicelo: Isetshenziswa kakhulu ukuvikela izingxenye ekugqwaleni komkhathi wamanzi olwandle noma izixazululo ezifanayo zikasawoti kanye nomhwamuko wamanzi olwandle agcwele.Izingxenye eziningi zezimboni zezindiza, zasolwandle neze-elekthronikhi, iziphethu, nezingxenye ezinentambo zigcwele i-cadmium.Ingapholishwa, ifakwe i-phosphatized futhi isetshenziswe njenge-primer kapende, kodwa ayikwazi ukusetshenziswa njenge-tableware.

I-Chrome Plating

I-Chromium izinzile kakhulu emkhathini oswakeme, i-alkali, i-nitric acid, i-sulfide, izixazululo ze-carbonate nama-asidi aphilayo, futhi incibilika kalula ku-hydrochloric acid kanye ne-sulfuric acid egxilile eshisayo.

Ngaphansi kwesenzo samanje esiqondile, uma ungqimba lwe-chromium lusetshenziswa njenge-anode, luncibilika kalula kusixazululo se-caustic soda.

Isendlalelo se-chromium sinokunamathela okuqinile, ubulukhuni obuphezulu, i-800 ~ 1000V, ukumelana nokugqokwa okuhle, ukukhanya okuqinile kokukhanya, nokumelana nokushisa okuphezulu.Kwehle kakhulu.Ububi be-chromium ukuthi iqinile, ishwabene futhi kulula ukuwa, okusobala kakhulu uma ibhekene nemithwalo yokushaqeka eshintshanayo.

Ngesikhathi esifanayo, i-chrome i-porous.I-metal chromium idlula kalula emoyeni ukuze yakhe ifilimu ye-passivation, ngaleyo ndlela iguqule amandla e-chromium.I-Chromium ku-iron ngaleyo ndlela iba i-cathodic coating.

Isicelo: Akulungile ukunamathisela i-chrome ngokuqondile phezu kwezingxenye zensimbi njengongqimba oluphikisana nokugqwala.Ngokuvamile, i-electroplating enezingqimba eziningi (okungukuthi i-copper plating → i-nickel → i-chromium) ingafinyelela inhloso yokuvimbela nokugqwala.Njengamanje, isetshenziswa kabanzi ekuthuthukiseni ukumelana nokugqoka kwezingxenye, ukulungisa ubukhulu, ukukhanya okukhanyayo nezibani zokuhlobisa.

I-Nickel Plating

I-Nickel inokusimama okuhle kwamakhemikhali emkhathini nase-lye, akulula ukushintsha umbala, futhi ikhishwa nge-oxidized kuphela lapho izinga lokushisa lingaphezu kuka-600°C.Incibilika kancane ku-sulfuric acid ne-hydrochloric acid, kodwa incibilika kalula ku-dilute nitric acid.Kulula ukudlula ku-nitric acid egxilile futhi ngaleyo ndlela inokumelana nokugqwala okuhle.

I-Nickel plating ilukhuni, kulula ukuyipholisha, inokukhanya okuphezulu futhi kwengeza ubuhle.Ububi bayo ukuqina kwayo, ukuze kunqotshwe lokhu kungalungile, i-multi-layer metal plating ingasetshenziswa, futhi i-nickel iyingqimba ephakathi.I-Nickel iyi-cathodic coating yensimbi kanye ne-anodic coating yethusi.

Isicelo: Ngokuvamile isetshenziselwa ukuvimbela ukugqwala nokwandisa ubuhle, ngakho-ke ngokuvamile isetshenziselwa ukuvikela izigqoko zokuhlobisa.Ukufakwa kwe-nickel emikhiqizweni yethusi kulungele ukulwa nokubola, kodwa ngenxa yokuthi i-nickel ibiza kakhulu, ama-alloys e-copper-tin avame ukusetshenziswa esikhundleni se-nickel-plating.