Insimbi engagqwali ingahlukaniswa ngensimbi engagqwali ye-austenitic, insimbi engagqwali ye-ferritic, insimbi engagqwali ye-martensitic kanye nensimbi engagqwali eyi-duplex ngokuya ngesakhiwo sayo se-metallographic.
(1) Insimbi engagqwali ye-Austenitic
Isakhiwo sezinga lokushisa legumbi lensimbi engagqwali ye-austenitic yi-austenite, eyakhiwa ngokwengeza i-nickel efanelekile ensimbini ephezulu ye-chromium.
Insimbi engagqwali ye-Austenitic inesakhiwo esizinzile se-austenite kuphela lapho i-Cr iqukethe cishe u-18%, i-Ni 8% kuya ku-25%, no-C cishe ngo-0.1%. Insimbi engagqwali ye-Austenitic isuselwe ku-Cr18Ni9 iron-based alloy. Ngokusetshenziswa okuhlukile, uchungechunge oluyisithupha lwezinsimbi ezingenasici ze-austenitic zenziwe.
Amamaki ajwayelekile ensimbi engagqwali ye-austenitic:
(1) 1Cr17Mn6Ni15N; (2) 1Cr18Mn8Ni5N; (3) 1Cr18Ni9; (4) 1Cr18Ni9Si3; (5) 06Cr19Ni10; (6) 00Cr19Ni10; (7) 0Cr19Ni9N; (8) 0Cr19Ni10NbN; (9) 00Cr18Ni10N; (10) 1Cr18Ni12; (11) 0Cr23Ni13; (12) 0Cr25Ni20; (13) 0Cr17Ni12Mo2; (14) 00Cr17Ni14Mo2; (15) 0Cr17Ni12Mo2N; (16) 00Cr17Ni13Mo2N; (17) 1Cr18Ni12Mo2Ti; (18) 0Cr; 1Cr18Ni12Mo3Ti; (20) 0Cr18Ni12Mo3Ti; (21) 0Cr18Ni12Mo2Cu2; (22) 00Cr18Ni14Mo2Cu2; (23) 0Cr19Ni13Mo3; (24) 00Cr19Ni13Mo3; (25) 0Cr18Ni16Mo5; (26) 1Cr18Ni9Ti; (27) (29) 0Cr18Ni; 0Cr18Ni13Si4;
Insimbi engagqwali ye-Austenitic iqukethe inani elikhulu le-Ni ne-Cr, okwenza insimbi ibe i-austenite ekamelweni lokushisa. Inepulasitiki enhle, ukuqina, ukushisela, ukumelana nokugqwala kanye nezakhiwo ezingezona uzibuthe noma ezibuthakathaka kazibuthe. Inokumelana nokugqwala okuhle ku-oxidizing nokunciphisa imidiya. Isetshenziselwa ukwenza izinto zokusebenza ezimelana ne-asidi, njengeziqukathi ezimelana nokugqwala kanye nolayini lwemishini nezinto zokuhamba. Amapayipi, izingxenye ze-nitric acid-resistant-resistant, njll., zingasetshenziswa njengezinto eziyinhloko zemihlobiso. Insimbi engagqwali ye-Austenitic ngokuvamile yamukela ukwelashwa kwesisombululo, okungukuthi, insimbi ishiselwa ku-1050 kuya ku-1150 ° C, bese ipholiswa ngamanzi noma ipholile emoyeni ukuze ithole isakhiwo se-austenite yesigaba esisodwa.
(2) insimbi engagqwali ye-ferritic
Amamaki asetshenziswa kakhulu ensimbi engagqwali ye-ferritic: (1) 1Cr17; (2) 00Cr30Mo2; (3) 00Cr17; (4) 00Cr17; (5) 1Cr17Mo; (6) 00Cr27Mo;
Insimbi engagqwali ye-Ferritic iyinsimbi engagqwali okwakhiwa kwayo ngokuyinhloko kuyi-ferrite ekamelweni lokushisa. Okuqukethwe kwe-Chromium kungu-11% -30%, ukumelana nokugqwala kwayo, ukuqina kanye nokushisela ukwanda ngokunyuka kokuqukethwe kwe-chromium, ukumelana nokugqwala kwe-chloride kungcono kunezinye izinhlobo zensimbi engagqwali, lolu hlobo lwensimbi ngokuvamile aluqukethe i-nickel, ngezinye izikhathi Iqukethe nenani elincane le-Mo, Ti, Nb nezinye izakhi. Lolu hlobo lwensimbi lunezici ze-conductivity enkulu yokushisa, i-coefficient encane yokwandisa, ukumelana okuhle kwe-oxidation, kanye nokumelana nokugqwala kwengcindezi okuhle kakhulu. Isetshenziswa kakhulu ukukhiqiza ukumelana nomkhathi, umhwamuko wamanzi, amanzi nama-oxidizing acid. Izingxenye ezigqwalile. Kodwa-ke, izici zemishini nokusebenza kwenqubo kuphansi, futhi zisetshenziswa kakhulu ezakhiweni ezimelana ne-asidi ezinokucindezeleka okuncane nanjengezinsimbi zokulwa ne-oxidation. Ingakwazi futhi ukukhiqiza izingxenye ezisebenza emazingeni okushisa aphezulu, njengezingxenye ze-gas turbine.
Isikhathi sokuthumela: Nov-11-2021