Ingabe insimbi engagqwali ngempela ayinasici?
Insimbi engagqwali (Insimbi Engagqwali) imelana nomoya, isitimu, amanzi kanye nezinye imidiya egqwalile noma insimbi engagqwali. Ukumelana nokugqwala kwayo kuncike ezintweni ze-alloy eziqukethwe ensimbi. Ngokuvamile, okuqukethwe kwe-chromium kukhulu kuno-12% futhi Ine-Corrosive steel ibizwa ngokuthi insimbi engagqwali. I-Chromium iyisici esiyisisekelo sokuthola ukumelana nokugqwala kwensimbi engagqwali. Uma okuqukethwe kwe-chromium kunsimbi kufinyelela cishe ku-12%, i-chromium ihlangana nomoya-mpilo endaweni ebolayo ukuze yakhe ifilimu elincanyana le-oxide (ifilimu ye-passivation) phezu kwensimbi. ) Ukuvimbela ukugqwala okuqhubekayo kwe-substrate yensimbi. Lapho ifilimu ye-oxide ilimala ngokuqhubekayo, ama-athomu omoya-mpilo emoyeni noma oketshezini azoqhubeka nokungena noma ama-athomu ensimbi ensimbi azoqhubeka nokuhlukana, enze i-iron oxide exekethile, futhi indawo yensimbi engagqwali izogqwala ngokuqhubekayo.
Usayizi wensimbi engagqwali wekhono lokunqanda ukugqwala uyashintsha kanye nokwakheka kwamakhemikhali ensimbi ngokwayo, isimo sokuvikela, izimo zokusetshenziswa, kanye nohlobo lwendawo ezungezile. Isibonelo, ipayipi lensimbi elingu-304 linokumelana okuhle kakhulu nokugqwala endaweni eyomile nehlanzekile, kodwa lizogqwala ngokushesha lapho liyiswa endaweni yogu lolwandle enkungu yolwandle equkethe usawoti omningi. kuhle. Ngakho-ke, akulona noma yiluphi uhlobo lwensimbi engagqwali, olungamelana nokugqwala nokugqwala ngaphansi kwanoma iyiphi imvelo.
Isikhathi sokuthumela: Feb-03-2020