Izikrufu ezisetyenziswa ngokuqhelekileyo iinkqubo zonyango lomphezulu zioxidation, electrophoresis, electroplating, Dacromet iindidi ezine, oku kulandelayo ikakhulu ukujija iumbala yonyango olungaphezulu lwesishwankathelo sohlelo.
- Mnyama ioksidi:
Ukwahlulwe kwiqondo lokushisa elimnyama kunye nobushushu obuphezulu obumnyama, kwiqondo lokushisa elimnyama njengomzekelo wenkqubo yile: ukuchithwa kweekhemikhali - ukuhlamba ngamanzi ashushu - ukuhlamba kwamanzi abandayo - ukususwa kwe-rust kunye ne-acid etching - ukucoca - ukumnyama - ukucoca -Ngaphezu kweoli okanye ukuvala ngaphezulu. Ingumaleko wefilimu ye-oxide eyenziwe yi-sodium hydroxide kunye ne-nitrite ye-sodium kwiqondo lokushisa eliphezulu ngaphezu kwe-100 degrees.
Icandelo eliphambili lefilimu ye-oxide yintsimbi ye-tetraoxide (Fe3C4), ukufana kwefilimu yi-0.6-1.5um kuphela, ukuxhathisa i-corrosion kubi kakhulu, kwimeko yokungabi ngaphezu kweoli okanye ivaliwe ityuwa engathathi hlangothi kuphela iiyure eziyi-1-2 okanye kunjalo, phezu kweoli kwiiyure ezingama-3-4 okanye njalo. Izixhobo ezincinci zombane aziyisebenzisi le nkqubo okwangoku izikrufu. Ukwahlula kwinkangeleko yombala, i-oxide emnyama kunye ne-zinc emnyama kunye ne-electrophoretic black close, kodwa ingabonakali njenge-zinc emnyama kunye nombala omnyama we-electrophoretic.
- Gcoba:
I-electroplating emnyama ineentlobo ezimbini ze-zinc emnyama kunye ne-nickel emnyama, umgaqo wenkqubo ngokusisiseko uyafana, kuphela ukuqulunqwa kwesisombululo se-electroplating kunye ne-post-treatment kunye ne-lattice eyahlukeneyo okanye isisombululo sokwenza i-passivation. I-Zinc iyasebenza ngokwemichiza, i-oxidise ilula kwaye ibe mnyama emoyeni, kwaye ekugqibeleni ivelise 'umhlwa omhlophe', i-zinc plating emva konyango lwe-chromate ukuze igqume umaleko we-zinc kwifilimu yokuguqulwa kwemichiza, ukuze isinyithi esisebenzayo sikwimo yokwenziwa, yi-passivation ye-zinc layer. Ifilimu ye-passivation evela kwimbonakalo inokwahlulwa ibe yi-passivation emhlophe (i-zinc emhlophe), eluhlaza okwesibhakabhaka (i-zinc eluhlaza okwesibhakabhaka), i-black passivation (i-zinc emnyama), i-passivation eluhlaza yomkhosi (i-zinc eluhlaza) njalo njalo.
- Electrophoresis Black:
Ukwamkela indlela ye-electrochemical ukufaka amasuntswana e-colloidal ye-organic resin kumacandelo ukwenza i-organic coating layer yemibala eyahlukeneyo, i-electrophoresis emnyama isetyenziswa ngakumbi kushishino, thatha inkqubo emnyama njengomzekelo: ukucoca-ukucoca-phosphating-electrophoresis paint-drying. Inokwahlulwa ibe i-anodic electrophoresis (i-resin ionization ibe yi-ion engalunganga) kunye ne-cathodic electrophoresis (i-resin electrophoresis ibe yi-ion elungileyo), kunye nenkqubo yepeyinti xa kuthelekiswa nomsebenzi wokwakha ilungile, ungcoliseko kunye nokulimala kokusingqongileyo ukunciphisa ukuchasana kwayo nokusebenza kwetyuwa engathathi hlangothi kwiiyure ezingama-300 okanye ngaphezulu, iindleko kunye nokuxhathisa umhlwa kunye nenkqubo yeDacromet iyafana.
- Zinc emhlophe:
Inkqubo ye-Electroplating yile: ukucoca - ukucoca - ukusebenza kwe-asidi ebuthathaka - i-zinc ye-electroplating - ukucoca - iinwele ezimhlophe ezidlulayo - ukucoca - ukomisa, kunye nokwahlukana kwe-zinc emnyama akukho ngaphezu kwe-lat rack kunye nokwahlukana kwesisombululo se-passivation, i-passivation emhlophe yifilimu ye-zinc oxide engenambala engenambala, phantse akukho chromium, ngoko ke i-corrosion ye-corrosion ihambelana nomgangatho we-zinc obomvu, i-zinc ebomvu yombala, i-zinc ebomvu, i-zinc ebomvu. Iiyure ze-6-12, kukho lo mvelisi we-plating ngokuphucula ukuchaneka komlinganiselo wesisombululo se-passivation sinokwenziwa ukuxhathisa ityuwa engathathi hlangothi malunga neeyure ezingama-20.
Ngenxa yohlobo lwezinc emhlophe yokucwenga isikhonkwane sokwenza uvavanyo lokutshiza lwetyuwa olungathathi hlangothi lwaqala lwavela kumphezulu we-plating corrosion emhlophe, into ebomvu yomhlwa imalunga neeyure ezingama-40, ngoko ke ukuxhathisa komhlwa kwe-zinc kubhetele kune-nickel emhlophe. Ukubonakala kunye ne-nickel emhlophe xa kuthelekiswa nobumnyama, i-zinc emhlophe yombala wokuqala we-zinc eluhlaza-mhlophe, kunye ne-nickel emhlophe xa kuthelekiswa nokwahlukana okukhulu.
- I-Nickel emhlophe:
inkqubo Plating yile: degreasing - ukucoca - activation buthathaka acid - ukucoca - ezantsi ubhedu - kusebenze - ukucoca - electroplating nickel- Ukucoca - passivation - ukucoca - ukomisa - okanye ivaliwe, kunye nenkqubo nickel emnyama ngokusisiseko iyafana, ngokuyintloko plating ifomula isisombululo yahlukile, ngaphantsi zinc sulfide kunye join.Nickel yinkangeleko yesilivere-emhlophe ye-nick eqaqambileyo, i-nickel ekhanyayo imbonakalo ye-nick ekhanyayo, isinyithi esikhanyayo se-nick ekhanyayo, Ukumelana ne-corrosion yayo kunye ne-nickel emnyama ayikho umehluko omkhulu kwiiyure ze-6-12, inkqubo yabavelisi ngokubanzi nayo iya kuba ngaphezu kweoli okanye ivaliwe, njengokuqwalasela impembelelo ye-corrosion kwiindawo zeplastiki zezinto ezingenayo kufuneka zisetyenziswe njengengqwalasela yokulawula ukuba okanye ingabi ngaphezu kweoli.
- I-zinc eluhlaza okwesibhakabhaka, i-zinc eluhlaza:
Inkqubo iphantse ifane ne-zinc emhlophe, i-zinc blue is passivated zinc oxide film iqulethe i-0.5-0.6mg/dm2 ye-trivalent chromium. I-Green passivation, eyaziwa ngokuba yi-five-acid passivation, inokufumana ifilimu eshinyeneyo yengca-eluhlaza, isisombululo se-passivation siqulethe i-phosphate ions, ifilimu ephumayo yengca eluhlaza yifilimu enzima, eyinkimbinkimbi yokukhusela i-chromates kunye ne-phosphates.
Ngokuxhathisa ukubola, i-zinc eluhlaza okwesibhakabhaka ingcono kunezinki emhlophe, ngelixa i-zinc eluhlaza ingcono kune-zinc eluhlaza. Umbala we-zinc eluhlaza okwesibhakabhaka kancinci kwaye i-zinc emhlophe isondele kushishino ukusebenzisa ngaphezulu, le yokugqibela inokusetyenziswa njengoyilo lwemveliso xa enye inkqubo yezikrufu.
- I-zinc ene-enameled (chemistry):
Kwinqanaba le-galvanizing yenkqubo ye-zinc enemibala yinto efanelekileyo yokuxhathisa i-corrosion, inkqubo yayo ye-colored passivation yile: i-galvanizing - ukucoca - i-2% - i-3% ye-nitric acid ngaphandle kokukhanya - ukucoca - i-chromium ephantsi ye-passivation enemibala - ukucoca -Ukubhaka ukuguga. Ubushushu bePassivation buphantsi kakhulu, ifilimu iyacotha, ifilimu ephaphathekileyo ibhityile. Ukushisa okuphezulu, ifilimu inzima kwaye ikhululekile, ayinamathele ngokuqinileyo. Kungcono ukulawula malunga nama-25 degrees ukuqinisekisa ukuba umbala ofanayo ufunyenwe kwixesha elithile.
Emva kokugqithisa, kufuneka ibhakwe kwaye igugile ukuphucula ukunamathela kunye nokuchasana kwe-corrosion yefilimu. Umbala we-zinc-plated screws ngokuchukumisa i-bottom of resistance to neutral salt spray in more than 48 hours, ulawulo olulungileyo lunokwenziwa ngaphezu kweeyure ze-100.
- Dacromet:
Sisishunqulelo kunye nokuguqulelwa kwe-DACROMET, oko kukuthi, i-zinc-based chromium ityuwa yokukhusela ityuwa, ebizwa ngokuba yi-zinc-aluminium coating. Inkqubo esisiseko kukuba: ukuhlamba - ukuhlamba - ukugubungela - ukufudumala - ukutshisa - ukupholisa. Inkqubo ngokubanzi iya kuba namaxesha angama-2-4 ukusuka kwi-coating ukuya kwinkqubo yokupholisa, kuba izikrufu ezinediphu yokwaleka ezifana nokufezekisa ubukhulu obuthile kufuneka zenziwe amaxesha amaninzi.
Ulwakhiwo kumphezulu wesinyithi, ziqatywe umaleko wesisombululo Dacromet (oko kukuthi, equlathe isikali zinc, aluminiyam [izikali ngokubanzi ubukhulu 0.1-0.2X10-15 microns] Cr03 kunye nomcimbi okhethekileyo eziphilayo ezihlakazeka kakhulu ukuxubana isisombululo enamanzi), ngo-300 ° C okanye ngoko ukugcinwa ubushushu ukubhaka ixesha elithile inchrovalent inchrovalent ulwelo Dacrovalent kuncitshiswe ixesha elithile. ichromium, ekhokelela kwi-amorphous composite chromate compounds (nCr03) mCr203).
Ukumelana nomhlwa kulunge kakhulu ityuwa engathathi hlangothi ukuya kuthi ga kwiiyure ezingama-300 okanye ngaphezulu, isithintelo sokugquma asifani, indawo ebhityileyo ye-5-10um, indawo engqingqwa ye-40um okanye kunjalo, iya kuchaphazela ubunzulu be-screw diamitha, ngoko umatshini wokucofa izikrufu kunye nezikrufu ezinobubanzi obuncinci bezikhonkwane kulungile kakhulu ukuba ungasebenzisi inkqubo yeDacromet njengonyango lomphezulu.
Ixesha lokuposa: Sep-18-2024
