I-7075 aluminium alloy, njenge-7 series aluminium alloy enokuqukethwe okuphezulu kwe-zinc, isetshenziswa kabanzi ku-aerospace, ezempi kanye nezimboni zokukhiqiza ezisezingeni eliphezulu ngenxa yezakhiwo zayo ezinhle kakhulu zemishini nezici ezingasindi. Kodwa-ke, kunezinselelo ezithile lapho kwenziwa ukwelashwa okungaphezulu, ikakhulukazi lapho kwenziwa i-anodizing ukuze kuthuthukiswe ukumelana nokugqwala kwayo kanye nokuqina kwendawo.
I-Anodizing inqubo ye-electrochemical lapho ifilimu ye-aluminium oxide ingakhiwa khona endaweni yensimbi ukuze kuthuthukiswe ukumelana nokugqokwa kwayo, ukumelana nokugqwala kanye nobuhle. Kodwa-ke, ngenxa yokuqukethwe okuphezulu kwe-zinc ku-7075 aluminium alloy kanye nezici zokubunjwa kwe-Al-Zn-Mg ingxubevange, ezinye izinkinga zivame ukwenzeka ngesikhathi sokugcotshwa:
1. Umbala ongalingani:I-elementi ye-zinc inomthelela omkhulu kumphumela we-oxidation, ongaholela kalula emaphethelweni amhlophe, amachashazi amnyama, nemibala engalingani endaweni yokusebenza ngemva kokukhishwa kwe-oxidation. Lezi zinkinga zibonakala ikakhulukazi lapho uzama ukuyifaka nge-oxidize ibe imibala egqamile (njengobomvu, owolintshi, njll.) ngoba ukuzinza kwale mibala kumpofu kakhulu.
2. Ukunamathela okunganele kwefilimu ye-oxide:Lapho inqubo yendabuko ye-sulfuric acid anodizing isetshenziselwa ukwelapha ama-alloys angu-7 ochungechunge lwe-aluminium, ngenxa yokusabalalisa okungalingani kanye nokuhlukaniswa kwezingxenye ze-aluminium ingxubevange, ubukhulu be-micropores ebusweni befilimu ye-oxide buzohluka kakhulu ngemva kwe-anodizing. Lokhu kuholela ekwehlukeni kwekhwalithi nokunamathela kwefilimu ye-oxide ezindaweni ezihlukene, futhi ifilimu ye-oxide kwezinye izindawo inokunamathela okubuthakathaka futhi ingase iwe.
Ukuze uxazulule lezi zinkinga, kuyadingeka ukwamukela inqubo ekhethekile ye-anodizing noma ukuthuthukisa inqubo ekhona, njengokulungisa ukwakheka, izinga lokushisa kanye nokushuba kwamanje kwe-electrolyte, okuzothinta ikhwalithi nokusebenza kwefilimu ye-oxide. Isibonelo, i-pH ye-electrolyte izothinta izinga lokukhula kanye nesakhiwo se-pore sefilimu ye-oxide; ukuminyana kwamanje kuhlobene ngokuqondile nokuqina nobulukhuni befilimu ye-oxide. Ngokulawula kahle lezi zinhlaka, ifilimu ye-aluminium anodized ehlangabezana nezidingo ezithile ingenziwa ngendlela oyifisayo.
Ukuhlola kubonisa ukuthi ngemva kokugcwalisa i-anodizing 7 series aluminium alloy, ifilimu ye-oxide enogqinsi lwe-30um-50um ingatholakala. Le filimu ye-oxide ayikwazi ukuvikela kuphela ngempumelelo i-aluminium alloy substrate futhi yandise impilo yayo yesevisi, kodwa futhi ihlangabezane nezidingo ezithile zokusebenza ngokulungisa imingcele yenqubo. Ingaphezulu lengxubevange ye-aluminium ngemva kwe-anodizing nayo ingadaywa ukuze imunce i-organic noma ye-inorganic pigments ukunikeza ingxubevange ye-aluminium imibala ecebile ukuze ihlangabezane nezidingo zobuhle ezahlukene.
Kafushane, i-anodizing iyindlela ephumelelayo yokuthuthukisa ukusebenza kwe-7 series aluminium alloys. Ngokulungisa imingcele yenqubo, ifilimu evikelayo ehlangabezana nezidingo ezithile zokuqina nokuqina ingalungiswa, eyandisa kakhulu insimu yesicelo se-aluminium alloys.
Isikhathi sokuthumela: Oct-19-2024
