Umzimba kunye nesakhiwo se-hook-beam yee-high-speed trains zenziwa kusetyenziswa i-aluminium alloy, eyaziwa ngeenzuzo zayo ezifana nokuxinana okuphantsi, umlinganiselo ophezulu wamandla ukuya kubunzima, ukuxhathisa okulungileyo kokubola, kunye nokusebenza okusemgangathweni ophantsi kobushushu.Ngokutshintsha izinto zentsimbi zemveli kunye ne-aluminiyam, ubunzima bomzimba kaloliwe buncitshiswe kakhulu, nto leyo ekhokelela ekusebenziseni amandla aphantsi, ukunciphisa ukungcoliseka kwendalo, kunye nokudala zombini izibonelelo zoqoqosho nezentlalo.
Nangona kunjalo, i-aluminiyam kunye ne-alloys ye-aluminiyam ineempawu zekhemikhali ezisebenza kakhulu.Ngaphandle kokwenza ifilimu eshinyeneyo ye-oxide xa evezwe kwioksijini kwimekobume, ebonelela ngokumelana nokugqwesa okungcono kunentsimbi eqhelekileyo, ukudumba kusengenzeka xa kusetyenziswa ialloy ye-aluminiyam koololiwe abahamba ngesantya esiphezulu.Imithombo yamanzi eyonakalisayo, kuquka i-splashing, i-atmospheric condensation, kunye namanzi aphuma phantsi emhlabeni ngexesha lokupaka, anokuphazamisa ifilimu ye-oxide.I-Corrosion kwi-alloy ye-aluminiyam esetyenziswa kumzimba woololiwe abahamba ngesantya esiphezulu ibonakala ikakhulu njenge-corrosion efanayo, i-corrosion ye-pitting, i-corrosion ye-crevice, kunye ne-corrosion yoxinzelelo, iyenza ibe yinkqubo enzima ephenjelelwa yimiba yokusingqongileyo kunye neepropati ze-alloy.
Kukho iindlela ezahlukeneyo zokunqanda ukubola kwealluminiyam ialloy, njengokusebenzisa i-anticorrosive coatings ukwahlula ngokufanelekileyo i-substrate ye-aluminium alloy kwindawo yangaphandle.I-anticorrosive coating eqhelekileyo yi-epoxy resin primer, esetyenziswa ngokubanzi ukuxhathisa kwayo kakuhle kwamanzi, ukunamathela okuqinileyo kwe-substrate, kunye nokuhambelana neengubo ezahlukeneyo.
Nangona kunjalo, xa kuthelekiswa neendlela zokuthintela umhlwa, eyona ndlela isebenzayo lunyango lwekhemikhali yokudlula.Emva kokunyangwa kwe-aluminiyam kunye ne-aluminium alloys, ubukhulu bemveliso kunye nokuchaneka komatshini kuhlala kungachaphazeleki, kwaye akukho tshintsho kwimbonakalo okanye umbala.Le ndlela ifaneleka ngakumbi kwaye ibonelela ngefilimu ekwaziyo ukuzinza kunye ne-corrosion-resistant passivation film xa kuthelekiswa neengubo zemveli ze-anticorrosive.Ifilimu ye-passivation eyenziwe ngonyango lwe-aluminiyam ye-alloy passivation izinzile kwaye inokumelana nokukhula okuphezulu kuneengubo zendabuko ezichasene ne-anticorrosive, kunye nenzuzo eyongeziweyo yokusebenza kokuzilungisa.
Isisombululo sethu se-chromium-free passivation, i-KM0425, silungele ukudlula izinto ze-aluminiyam, ii-alloys ze-aluminium, kunye neemveliso ze-aluminium ezifayo, eziphucula ukuxhathisa kwazo.Yimveliso entsha kunye nomgangatho ophezulu wenjongo jikelele yokugqithisa izinto ze-aluminium.Yenziwe ngeeasidi ze-organic, izinto ezinqabileyo zomhlaba, i-corrosion inhibitors ezikumgangatho ophezulu, kunye nenani elincinci le-high-molecular-weight passivation accelerators, ayinayo i-asidi, ayinayo ityhefu, kwaye ayinavumba.Ukuthobela imigangatho ye-RoHS yangoku, ukusebenzisa esi sisombululo siqinisekisa ukuba inkqubo yokugqithisa ayilonakalisi umbala wokuqala kunye nemilinganiselo ye-workpiece ngelixa iphucula kakhulu ukuchasana kwezinto ze-aluminium kwi-spray yetyuwa.
Ixesha lokuposa: Jan-25-2024