Umzimba kanye nesakhiwo se-hook-beam yezitimela ezihamba ngesivinini esikhulu kukhiqizwa kusetshenziswa ingxubevange ye-aluminium, eyaziwa ngezinzuzo zayo ezifana nokuminyana okuphansi, isilinganiso esiphakeme samandla kuya kwesisindo, ukumelana nokugqwala okuhle, nokusebenza okuhle kakhulu kwezinga lokushisa eliphansi.Ngokushintsha izinto zensimbi zendabuko nge-aluminium, isisindo somzimba wesitimela sincishiswa kakhulu, okuholela ekusetshenzisweni kwamandla okuphansi, ukunciphisa ukungcoliswa kwemvelo, nokudala kokubili izinzuzo zezomnotho nezenhlalakahle.
Kodwa-ke, i-aluminium ne-aluminium alloys inezakhiwo zamakhemikhali ezisebenzayo kakhulu.Naphezu kokwenza ifilimu eliminyene le-oxide lapho lichayeke kumoya-mpilo endaweni ezungezile, linikeza ukumelana nokugqwala okungcono kunensimbi evamile, ukugqwala kusengenzeka uma ingxubevange ye-aluminium isetshenziswa ezitimeleni ezinesivinini esikhulu.Imithombo yamanzi ebolayo, okuhlanganisa ukuchaphaza, ukufingqa komkhathi, namanzi ahwamukayo emhlabeni ngesikhathi sokupaka, kungaphazamisa ifilimu ye-oxide.Ukugqwala kungxube ye-aluminiyamu esetshenziswa emzimbeni wezitimela ezihamba ngesivinini esikhulu kubonakala njengokugqwala okufanayo, ukugqwala komgodi, ukugqwala kwe-crevice, nokugqwala kwengcindezi, okuyenza inqubo eyinkimbinkimbi ethonywa yizo zombili izici zemvelo kanye nezakhiwo zengxubevange.
Kunezindlela ezahlukahlukene zokunqanda ukubola kwengxubevange ye-aluminium, njengokusebenzisa izimbotshana zokuqeda ukubola ukuze kuhlukaniswe ngokuphumelelayo i-aluminium alloy substrate endaweni yangaphandle.I-anticorrosive coating evamile i-epoxy resin primer, esetshenziselwa kakhulu ukumelana namanzi kahle, ukunamathela okuqinile kwe-substrate, nokuhambisana nezingubo ezihlukahlukene.
Kodwa-ke, uma kuqhathaniswa nezindlela zokuvimbela ukugqwala okungokomzimba, indlela ephumelela kakhudlwana iwukwelashwa kwe-chemical passivation.Ngemuva kokwelashwa kwe-passivation ye-aluminium ne-aluminium alloys, ukushuba komkhiqizo nokunemba komshini kuhlala kungathinteki, futhi azikho izinguquko ekubukekeni noma umbala.Le ndlela ifaneleka kakhulu futhi inikeza ifilimu yokudlula ezinzile futhi ukumelana nokugqwala uma kuqhathaniswa nezingubo ezivamile zokunqanda ukubola.Ifilimu ye-passivation eyakhiwe ngokwelashwa kwe-aluminium alloy passivation izinze kakhulu futhi inokumelana nokugqwala okuphezulu kunezimbobo zendabuko ezivimbela ukubola, ngenzuzo eyengeziwe yokusebenza kokuzilungisa.
Isixazululo sethu se-passivation samahhala se-chromium, i-KM0425, silungele izinto ze-aluminium ezidlulayo, ama-alloys e-aluminium, nemikhiqizo ye-aluminium e-die-cast, ethuthukisa ukumelana nokugqwala.Kungumkhiqizo omusha noseqophelweni eliphezulu wokuphasisa inhloso ejwayelekile yezinto ze-aluminium.Yakhelwe ngama-asidi aphilayo, izinto zomhlaba ezingavamile, ama-corrosion inhibitors ekhwalithi ephezulu, kanye nenani elincane lama-accelerators anesisindo esikhulu samangqamuzana, ayina-asidi, ayinabuthi, futhi ayinaphunga.Ngokuhambisana nezindinganiso zamanje zemvelo ze-RoHS, ukusebenzisa lesi sixazululo sokudlulisa kuqinisekisa ukuthi inqubo yokudlula ayilimazi umbala wangempela nobukhulu be-workpiece ngenkathi ithuthukisa ngokuphawulekayo ukumelana kwezinto ze-aluminium ukuze zifuthwe usawoti.
Isikhathi sokuthumela: Jan-25-2024