Kufuneka kuthiwe yonke imibhobho ye-austenitic stainless steel fluid ineempawu zokumelana nokugqwala, ukumelana nobushushu obuphezulu kunye nokumelana noxinzelelo oluphezulu.Kuphela ngokuthelekisa, baneempawu ezahlukeneyo ezicacileyo kunye nemisebenzi:
I-304: Ukuxhathisa okuqhelekileyo kwe-corrosion kunye nobushushu obuphezulu obunganyangekiyo umbhobho wentsimbi engenamthungo, i-304 inokumelana kakuhle ne-intergranular corrosion, ukusebenza kakuhle kwe-corrosion, ukusebenza okubandayo kunye nokusebenza kwesitampu, kwaye inokusetyenziswa njengentsimbi ekwazi ukumelana nobushushu.Ngexesha elifanayo, iipropati ze-mechanical zentsimbi ziselungile kwi -180 ° C.Kwimeko yesisombululo esiqinileyo, intsimbi ineplastiki efanelekileyo, ukuqina kunye nokusebenza okubandayo;inokumelana ne-corrosion elungileyo kwi-oxidizing acids, umoya, amanzi kunye neminye imithombo yeendaba.
I-304L iyintlukwano ye-304 yensimbi engenasici enomxholo ophantsi wekhabhoni kwaye isetyenziswe apho i-welding ifunwa khona.Umxholo ophantsi wekhabhoni unciphisa imvula ye-carbides kwindawo echaphazelekayo ukushisa kufuphi ne-weld, enokuthi iholele kwi-intergranular corrosion (ukuhlaselwa kwe-weld) kwiinsimbi ezingenasici kwezinye iindawo.
Ukuxhatshazwa kwe-corrosion ye-316 / 316L ipayipi yensimbi engenasici ingcono kunombhobho we-304 wensimbi engenasici, kwaye inokumelana nokugqwala okulungileyo kwinkqubo yokuvelisa i-pulp kunye nephepha.Ngenxa yokongezwa kwe-Mo, inokumelana nokugqwesa okugqwesileyo, ngakumbi ukuchasana nokugoba;amandla obushushu obuphezulu nawo alungile kakhulu;umsebenzi ogqwesileyo ukuqina (ubuthathaka buzibuthe emva kokucubungula);non-magnetic kwisimo sesisombululo esiluqilima.Ikwanayo nokumelana kakuhle ne-chloride corrosion, ngoko idla ngokusetyenziswa kwiindawo zaselwandle okanye kwiiprojekthi zokwakha ngaselwandle.
I-321 insimbi engenasici yi-Ni-Cr-Ti yohlobo lwe-austenitic yensimbi engenasici, intsebenzo yayo ifana kakhulu ne-304, kodwa ngenxa yokongezwa kwe-titanium yensimbi, inokumelana ne-intergranular corrosion kunye namandla aphezulu okushisa.Ngenxa yokongezwa kwe-titanium yensimbi, ilawula ngokufanelekileyo ukubunjwa kwe-chromium carbide.I-321 insimbi engenasici inomgangatho ophezulu woxinzelelo oluphezulu loxinzelelo (uxinzelelo lwe-Stress) ukusebenza kunye nokumelana nokushisa okuphezulu kwe-creep (i-Creep Resistance) i-stress mechanical properties ingcono kune-304 insimbi engenasici.I-Ti kwi-321 ipayipi yensimbi engenasici ikhona njengento yokuzinzisa, kodwa iphinda ibe yinqanaba lentsimbi yokushisa, elingcono kakhulu kune-316L ngokubhekiselele kwiqondo lokushisa eliphezulu.Inokumelana ne-corrosion elungileyo kwi-organic kunye ne-inorganic acids yoxinzelelo kunye namaqondo obushushu ahlukeneyo, ngakumbi kwimidiya ye-oxidizing, kwaye isetyenziselwa ukwenza iilining kunye nemibhobho yezikhongozeli ze-asidi ezinxitywayo kunye nezixhobo ezinganxiliyo.Inokumelana nobushushu obuphezulu, ngokubanzi malunga nama-700 degrees, kwaye ihlala isetyenziswa kwizityalo zamandla.Ukusetyenziswa kumatshini wentsimi kumashishini ekhemikhali, amalahle kunye nepetroleum efuna ukuchasana okuphezulu kwi-corrosion ye-grain boundary corrosion, iindawo ezichasene nobushushu bezinto zokwakha kunye neenxalenye ezinzima ukunyanga ukutshisa.
I-310S: Eyona nto isetyenziswa kakhulu ekuxhathiseni i-oxidation, ukuxhathisa umhlwa, ubushushu obuphezulu obuxhathisayo kwimizi-mveliso yentsimbi engenamthungo yombhobho kunye nombhobho odityanisiweyo weshishini.Ukusetyenziswa okuqhelekileyo: izixhobo zokutshisa, izixhobo zokucoca iimoto.Umbhobho wentsimbi ye-310S yintsimbi ye-chromium-nickel ye-austenitic enokumelana ne-oxidation yobushushu obuphezulu, ukuxhathisa kwe-asidi kunye ne-alkali, kunye nokuxhathisa ukubola.Ngenxa yomxholo ophezulu we-chromium (Cr) kunye ne-nickel (Ni), inamandla angcono kakhulu okukhasa.Inokusebenza ngokuqhubekayo kwiqondo lokushisa eliphezulu kwaye inokumelana nokushisa okuphezulu.Xa izinga lokushisa lidlula i-800, liqala ukuthambisa, kwaye uxinzelelo oluvumelekileyo luqala ukuhla ngokuqhubekayo.Ubushushu benkonzo enkulu yi-1200°C, kwaye ubushushu bokusetyenziswa okuqhubekayo yi-1150°C.Imibhobho yentsimbi enobushushu obuphezulu isetyenziswa ngokukodwa ekwenzeni iityhubhu zombane zombane kunye nezinye izihlandlo.Emva kokunyusa umxholo wekhabhoni kwi-austenitic stainless steel, amandla aphuculwe ngenxa yesisombululo esiqinileyo sokuqinisa.Ukwakhiwa kweekhemikhali zensimbi engenasici ye-austenitic isekelwe kwi-chromium kunye ne-nickel.Izinto ezifana ne-molybdenum, tungsten, niobium kunye ne-titanium zongezwa njengesiseko.Ngenxa yokuba umbutho wayo ugxile kwi-cubic structure, unamandla aphezulu kunye namandla okukhasa kumaqondo aphezulu.
Ixesha lokuposa: Jan-31-2023
