Ziziphi iingenelo zeemveliso ze-alloy ezinganyangekiyo
Iialloyi ezinganyangekiyo ku-Corrosion ngokubanzi azinakusetyenziswa kwiindawo ezidliwayo ezinokunciphisa okunamandla okanye ukusebenza kokutywinwa okuphezulu (imekobume ene-anoxic), kwaye ukusebenza kweemveliso zihlala zihlaziywa, kwaye zisetyenziswa ngokubanzi, kwaye baninzi abavelisi beemveliso, indlela yokwenza imveliso. khetha Umenzi ofanele wena yinzululwazi.Ngakolunye uhlangothi, ulwazi kufuneka luqwalaselwe ngokwexabiso, kwaye ezinye iinkalo kufuneka ziqwalaselwe ngokubanzi, njengokuba ngaba umenzi ulawulwa kunye nokuba inkonzo emva kokuthengisa iqinisekisiwe.
Ingxubevange ye-Corrosion Resistant
Zeziphi iintlobo ze-alloys ezixhathisa ukubola?
1. Ukonakala kwentsimbi engenasici
Ikakhulu ibhekisa kuthotho oluqhelekileyo lwe-300 yensimbi engenasici ye-304, i-316L, i-317L, njl. njli-austenitic stainless steel 904L, i-254SMO ene-corrosion resistance resistance;duplex steel 2205, 2507, njl.;i-alloys enganyangekiyo kwi-corrosion equkethe i-CU 20 alloy, njl.
2. Isiseko se-alloy enganyangekiyo
Ngokukodwa i-alloy ye-Hastelloy kunye ne-NI-CU i-alloy, njl. Ekubeni i-NI yensimbi ngokwayo inobuso obuphakathi kwesakhiwo se-cubic, ukuzinza kwayo kwe-crystallographic kwenza ukuba ikwazi ukulungiselela izinto ezininzi ze-alloying kune-FE, njenge-CR, MO, njl., ukuze kuphunyezwe ukumelana Isakhono semimandla eyahlukeneyo;ngelo xesha, i-nickel ngokwayo inamandla athile okuxhathisa ukubola, ngokukodwa ukukwazi ukuxhathisa i-corrosion yoxinzelelo olubangelwa yi-ion chloride.Kwiimeko ezomeleleyo zokunciphisa umhlwa, iindawo ezixubeneyo zeasidi ezixubeneyo, kunye nezisombululo ezine-halogen ion, i-nickel-based corrosion-resistant alloys emelwe yi-Hastelloy ineengenelo ezipheleleyo ngaphezu kweentsimbi ezingenasici.
3.IHastelloy yeye-nickel-molybdenum-chromium-iron-tungsten nickel-based alloy.Sesinye sezona zixhobo zentsimbi zanamhlanje ezikwaziyo ukugxwala.Ubukhulu becala ayixhathisi kwiklorini emanzi, iikloridi ezahlukeneyo ze-oxidizing, izisombululo zetyuwa yekloride, i-asidi yesulfuric kunye neetyuwa ezixutywe ne-oxidizing, kwaye inokumelana ne-corrosion elungileyo kubushushu obuphantsi kunye nobushushu obuphakathi be-hydrochloric acid.Ke ngoko, kule minyaka ingamashumi amathathu idlulileyo, ibisetyenziswa ngokubanzi kwiindawo ezirhabaxa, ezifana neshishini lemichiza, ishishini lepetrochemical, i-flue gas desulfurization, i-pulp kunye nephepha, ukukhuselwa kwendalo kunye namanye amashishini.Idatha ye-corrosion eyahlukeneyo ye-Hastelloy alloys iyinto eqhelekileyo, kodwa ayinakusetyenziswa njengeenkcazo, ngokukodwa kwiindawo ezingaziwayo, kunye nezinto kufuneka zikhethwe emva kovavanyo.Akukho Cr eyaneleyo kwi-Hastelloy yokuxhathisa i-corrosion kwindawo ene-oxidizing enamandla, njenge-acid egxininisiweyo ye-nitric.Imveliso yale alloy ubukhulu becala kummandla wenkqubo yeekhemikhali, ngakumbi xa kukho i-asidi exubeneyo, enjengombhobho wokukhupha we-flue gas desulfurization system.
Ixesha lokuposa: May-15-2023
