Inkqubo yonyango lomphezulu wesikrufu

Iinkqubo zonyango lomphezulu ezisetyenziswa rhoqo zizikrufui-oxidation, i-electrophoresis, i-electroplating, i-Dacromet iindidi ezine, ezi zilandelayo zezokulungisa ingxakiumbala yonyango lomphezulu wesishwankathelo sohlulo.

• Mnyama i-oxide：

Yahlulwe ngokwemiba emnyama kubushushu begumbi kunye nokumnyama kubushushu obuphezulu, ukuya kwimiba emnyama kubushushu begumbi njengomzekelo wenkqubo yile: ukususa amafutha ngamakhemikhali – ukuhlamba ngamanzi ashushu – ukuhlamba ngamanzi abandayo – ukususa umhlwa kunye nokugrumba nge-asidi – ukucoca – ukwenza mnyama – ukucoca – Ngaphezulu kweoyile okanye ngaphezulu ivaliwe. Lumaleko wefilimu ye-oxide eyenziwe yi-sodium hydroxide kunye ne-sodium nitrite kubushushu obuphezulu obungaphezulu kwama-100 degrees.

Eyona nto iphambili kwifilimu ye-oxide yi-iron tetraoxide (Fe3C4), ukufana kwefilimu yi-0.6-1.5um kuphela, ukumelana nokugqwala kuphantsi kakhulu, kwimeko yokuba i-oyile okanye i-neutral salt spray ayifakwanga ngaphezulu kwe-1-2 iiyure okanye ngaphezulu, i-oyile isetyenziswa ngaphezulu kwe-3-4 iiyure okanye ngaphezulu. Izixhobo ezincinci azisebenzisi le nkqubo okwangoku zizikrufu. Zahlulwe kwimbonakalo yombala, i-oxide emnyama kunye ne-zinc emnyama kunye ne-electrophoretic black close, kodwa ayikhanyi njenge-zinc emnyama kunye nombala omnyama we-electrophoretic.

• IGalvanise：

I-Black electroplating ineentlobo ezimbini ze-black zinc kunye ne-black nickel, umgaqo wenkqubo uyafana, kuphela ukwenziwa kwesisombululo se-electroplating kunye nonyango emva kokusetyenziswa kwe-lattice okanye isisombululo se-passivation esahlukileyo. I-Zinc iyasebenza ngokweekhemikhali, kulula ukuyi-oxidize kwaye iyenze ibe mnyama emoyeni, kwaye ekugqibeleni ivelise ukubola 'okumhlophe', i-zinc plating emva konyango lwe-chromate ukuze igubungele umaleko we-zinc kwifilimu yokuguqulwa kweekhemikhali, ukuze isinyithi esisebenzayo sibe kwimeko yokungasebenzi, kukudluliselwa komaleko we-zinc. Ifilimu ye-Passivation ukusuka kwimbonakalo inokwahlulwa ibe yi-white passivation (white zinc), blue blue (blue zinc), black passivation (black zinc), military green passivation (green zinc) njalo njalo.

• I-Electrophoresis Emnyama：

Ukusebenzisa indlela ye-electrochemical ukufaka amasuntswana e-colloidal e-organic resin kwiindawo ezithile ukuze zenze umaleko we-organic coating wemibala eyahlukeneyo, i-electrophoresis emnyama isetyenziswa kakhulu kushishino, thabatha inkqubo emnyama njengomzekelo: i-degreasing-cleaning-phosphating-electrophoresis paint-drying. Ingahlulwahlulwa ibe yi-anodic electrophoresis (i-resin ionisation ibe yi-negative ions) kunye ne-cathodic electrophoresis (i-resin electrophoresis ibe yi-positive ions), kwaye inkqubo yepeyinti xa ithelekiswa nokusebenza kolwakhiwo ilungile, ungcoliseko kunye nomonakalo kwindalo esingqongileyo ukunciphisa ukumelana kwayo nokusebenza kwe-neutral salt spray kwiiyure ezingama-300 nangaphezulu, iindleko kunye nokumelana nokugqwala kunye nenkqubo yeDacromet ziyafana.

• I-Zinc emhlophe：

Inkqubo yokucoca nge-electroplating yile: ukususa amafutha – ukucoca – ukusebenza kwe-asidi ebuthathaka – ukucoca nge-electroplating zinc – ukucoca – iinwele ezimhlophe zokuthambisa – ukucoca – ukomisa, kwaye umahluko we-zinc emnyama akukho. Umahluko wesisombululo se-lat rack kunye ne-passivation, i-passivation emhlophe yifilimu ye-zinc oxide engenambala, phantse ayina-chromium, ngoko ke ukumelana nokugqwala xa kuthelekiswa ne-zinc emnyama, i-zinc eluhlaza okwesibhakabhaka, i-zinc enemibala iphantsi, umgangatho weshishini kwiiyure ezi-6-12, kukho lo mvelisi we-plating ngokuphucula ukuchaneka komlinganiselo wesisombululo sokuthambisa ungenziwa ukumelana ne-neutral salt spray malunga neeyure ezingama-20.

Ngenxa yokuba i-zinc plating type emhlophe, inkqubo yonyango lomphezulu we-screws yenze uvavanyo lwe-neutral salt spray ekuqaleni yabonakala kumphezulu we-plating corrosion white, i-red rust iyenzeka malunga neeyure ezingama-40, ngoko ke ukumelana ne-zinc corrosion emhlophe kungcono kune-nickel emhlophe. Inkangeleko kunye ne-nickel emhlophe xa kuthelekiswa ne-zinc emnyama, emhlophe xa kuthelekiswa nombala wokuqala we-zinc greenish-white, kunye ne-nickel emhlophe xa kuthelekiswa nomahluko omkhulu.

• I-Nickel emhlophe：

Inkqubo yokuplata yile: ukususa amafutha – ukucoca – ukusebenza kwe-asidi ebuthathaka – ukucoca – ubhedu olusezantsi – ukusebenza – ukucoca – ukucoca – ukucoca nge-electroplating nickel- Ukucoca – ukudlulisa amanzi – ukucoca – ukomisa – okanye ukuvala, kwaye inkqubo ye-nickel emnyama iyafana, ikakhulu i-plating solution formula yahlukile, i-zinc sulfide encinci kunye nokudibanisa. I-Nickel yintsimbi yesilivere-emhlophe emthubi, ukuze ibonakale ngcono, iya kujoyina i-nickel-plated brightener. Ukumelana kwayo nokugqwala kunye ne-nickel emnyama akukho mahluko mkhulu kwiiyure ezi-6-12, inkqubo yabavelisi ngokubanzi iya kuba ngaphezulu kweoyile okanye ivaliwe, njengokuqwalasela impembelelo yokugqwala kwiindawo zeplastiki zezinto ezingenayo kufuneka kusetyenziswe njengokugxila ekulawuleni ukuba i-oyile ingaphezulu okanye hayi.

• I-zinc eluhlaza okwesibhakabhaka, i-zinc eluhlaza：

Le nkqubo ifana kakhulu neye-zinc emhlophe, i-blue zinc yi-passivated zinc oxide film equlethe i-0.5-0.6mg/dm2 ye-trivalent chromium. I-Green passivation, ekwaziwa ngokuba yi-five-acid passivation, inokufumana ifilimu eluhlaza okwesibhakabhaka, isisombululo se-passivation siqulethe ii-phosphate ions, ifilimu eluhlaza okwesibhakabhaka eqaqambileyo yifilimu ekhuselayo eyinkimbinkimbi, eyinkimbinkimbi ngokwesakhiwo se-chromates kunye nee-phosphates.

Ngenxa yokumelana kwayo nokugqwala, i-zinc eluhlaza okwesibhakabhaka ingcono kune-zinc emhlophe, ngelixa i-zinc eluhlaza okwesibhakabhaka ingcono kune-zinc eluhlaza okwesibhakabhaka. Umbala we-zinc eluhlaza okwesibhakabhaka uluhlaza okwesibhakabhaka kancinci kwaye i-zinc emhlophe isondele kakhulu kushishino lokusetyenziswa ngakumbi, le yokugqibela ingasetyenziswa njengoyilo lwemveliso xa kusetyenziswa enye indlela yokwenza izikrufu.

• I-zinc enamel (ikhemistri)：

Kwicandelo le-galvanising yenkqubo ye-zinc enemibala kukho ukumelana okuhle kokugqwala, inkqubo yayo ye-passivation enemibala yile: i-galvanising – ukucoca – 2% – 3% i-nitric acid ngaphandle kokukhanya – ukucoca – i-chromium ephantsi i-passivation enemibala – ukucoca - Ukubhaka ukuguga. Ubushushu be-passivation buphantsi kakhulu, ifilimu icotha, ifilimu incinci. Ubushushu obuphezulu, ifilimu ityebile kwaye ikhululekile, ayinamathelani ngokuqinileyo. Kungcono ukulawula malunga nama-25 degrees ukuqinisekisa ukuba umbala ofanayo ufunyenwe kwixesha elithile.

Emva kokuyitshisa, kufuneka ibhakwe kwaye ivuthwe ukuze ifilimu ikwazi ukunamathela kunye nokumelana nokugqwala. Faka umbala kwizikrufu ezifakwe i-zinc ngokuchukumisa ezantsi kokumelana ne-neutral salt spray kwiiyure ezingaphezu kwama-48, ulawulo olufanelekileyo lunokwenziwa kwiiyure ezingaphezu kwe-100.

• I-Dacromet：

Sisifinyezo kunye nenguqulelo ye-DACROMET, oko kukuthi, i-flaky zinc-based chromium salt protective coating, ekwabizwa ngokuba yi-zinc-aluminium coating. Inkqubo esisiseko yile: ukususa amafutha – ukukhupha amafutha – ukugquma – ukufudumeza kwangaphambili – ukuthambisa – ukupholisa. Inkqubo ngokubanzi iya kuba nezihlandlo ezi-2-4 ukusuka ekugqumeni ukuya ekupholiseni, kuba izikrufu ezine-dip coating eziza kufikelela kubukhulu obuthile kufuneka zenziwe amaxesha amaninzi.

Ulwakhiwo luphezu komphezulu wesinyithi, lugqunywe ngomaleko wesisombululo seDacromet (oko kukuthi, equlethe izikali ze-zinc, i-aluminium [izikali ngokubanzi zinobukhulu obuyi-0.1-0.2X10-15 microns] Cr03 kunye ne-organic matter ekhethekileyo yesisombululo samanzi esixutyiweyo esisasazekayo kakhulu), ngama-300 ° C okanye ngaphezulu kokugcinwa kobushushu xa kuphekwa ixesha elithile, ulwelo lweDacromet kwi-chromium ene-hexavalent luncitshiswa lube yi-chromium ene-trivalent, nto leyo ebangela ukuba kubekho iikhompawundi ze-chromate ezihlanganisiweyo ezingenamofu (nCr03) mCr203).

Ukumelana nokugqwala kuhle kakhulu. Ityuwa engathathi cala ifikelela kwiiyure ezingama-300 nangaphezulu, ingxaki yokugquma ayifani, indawo encinci yi-5-10um, indawo etyebileyo yi-40um okanye ngaphezulu, iya kuchaphazela ubunzulu bobubanzi besikrufu, ngoko ke umatshini wokucofa izikrufu kunye nezikrufu ezinobubanzi obuncinci bezikrufu kulungile kakhulu ukuba ungasebenzisi inkqubo yeDacromet njengonyango lomphezulu.