Ukumelana nokushisa okushisayo kubhekisela ezintweni zayo ezinhle kakhulu zomzimba nezomshini ezisengakwazi ukugcina insimbi engagqwali ezingeni lokushisa eliphezulu.
Umthelela wekhabhoni: Ikhabhoni iwukwakheka okuqinile kwensimbi engagqwali ye-Austenite futhi iqinisa i-austenite futhi yandise isifunda sase-Austenitic.Amandla ekhabhoni ukwenza i-austenitic cishe izikhathi ezingama-30 kune-nickel.Ikhabhoni iyingxenye yegebe.Ingathuthukisa kakhulu amandla ensimbi engagqwali ye-Austenite ngokusebenzisa isithuthukisi esincibilikayo esiqinile.Ikhabhoni futhi ingathuthukisa ukumelana nokumelana nokumelana nokugqwala ku-chloride ewugqinsi ophezulu (njengesixazululo esibilayo esingu-42% mgCl2).
Kodwa-ke, ku-austenitic stainless steel, i-carbon ivame ukubhekwa njengezinto eziyingozi.Lokhu ikakhulukazi ngenxa yezimo ezithile (ezifana nokushisela noma ukushisisa nge-450 ~ 850 ° C) ngaphansi kwezinye izimo ensimbi engagqwali).Ikhabhoni ingaba yinhle njengensimbi nensimbi ensimbi.I-Chromium yenza inhlanganisela yekhabhoni ye-chromium CR23C6 ephezulu, eholela ebumpofu be-chromium yasendaweni, enciphisa ukumelana nokugqwala kwensimbi, ikakhulukazi ukumelana nokugqwala kokumelana nekristalu.ngakho-ke.Kusukela ngeminyaka yawo-1960s, i-chromium -nickel Austeenian steel stainless steel esanda kwakhiwa iwukuqukethwe kwekhabhoni engaphansi kuka-0.03% noma u-0.02% wohlobo lwe-ultra -low -carbon.Ungazi ukuthi njengoba okuqukethwe kwekhabhoni kuncipha, ukuzwela kwe-crystal corrosion yensimbi kuyancishiswa.U-0.02% unemiphumela esobala kakhulu.Okunye ukuhlola kuphinde kwaveza ukuthi ikhabhoni ingaphinda yandise ukuthambekela kwamaphoyinti okugqwala kwe-chromium Aozoi yensimbi engagqwali.Ngenxa yomphumela olimazayo wekhabhoni, akufanele nje kuphela ukuthi okuqukethwe kwekhabhoni kulawulwe ngendlela ephansi ngangokunokwenzeka ngesikhathi sokuncibilikisa insimbi engagqwali ye-austenite, kodwa futhi nangenqubo yokushisa okwalandela, ukucutshungulwa okubandayo nokwelashwa kokushisa, kodwa futhi ukuvimbela ingaphezulu lensimbi engagqwali ukukhulisa indawo yekhabhoni nokugwema i-chromium carbides egwema i-chromium carbides Ekhethiwe.
Isikhathi sokuthumela: Feb-13-2023