Kurongwa kweStainless Steel

Simbi isina simbi inogona kukamurwa kuita austenitic Stainless simbi, ferritic Stainless simbi, martensitic Stainless simbi uye duplex Stainless simbi zvinoenderana neiyo metallographic chimiro.

(1) Austenitic simbi isina tsvina

Iyo tembiricha yekamuri yeaustenitic simbi isina tsvina ndeye austenite, iyo inoumbwa nekuwedzera yakakodzera nickel kune yakakwirira chromium simbi isina tsvina.

Austenitic Stainless simbi ine yakagadzika austenite chimiro chete kana Cr ine inenge 18%, Ni 8% kusvika 25%, uye C inenge 0.1%. Austenitic Stainless simbi yakavakirwa paCr18Ni9 iron-based alloy. Nekushandisa kwakasiyana, nhanhatu dzakatevedzana dze austenitic simbi dzisina tsvina dzakagadzirwa.

Akajairika mamakisi e austenitic Stainless simbi:
(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;

Austenitic Stainless simbi ine huwandu hukuru hweNi uye Cr, ichiita iyo simbi austenite pakupisa kwekamuri. Iyo ine yakanaka plasticity, kuoma, weldability, corrosion resistance uye isiri-magnetic kana kushaya simba remagineti. Iyo ine yakanaka corrosion resistance mune oxidizing uye kuderedza midhiya. Inoshandiswa kugadzira midziyo inodzivirira acid, senge midziyo isingadziviriri uye midziyo yekutakura uye yekufambisa. Mapaipi, nitric acid-inodzivirira midziyo zvikamu, nezvimwewo, inogonawo kushandiswa sechinhu chikuru chezvishongo. Austenitic Stainless simbi inowanzo tora mushonga wekugadzirisa, kureva kuti, simbi inopisa kusvika 1050 kusvika 1150 ° C, uyezve mvura-yakatonhodzwa kana mhepo-yakatonhodzwa kuwana imwe-phase austenite chimiro.

(2) ferritic simbi isina tsvina

Inowanzoshandiswa mamakisi eferritic simbi isina tsvina: (1) 1Cr17; (2) 00Cr30Mo2; (3) 00Cr17; (4) 00Cr17; (5) 1Cr17Mo; (6) 00Cr27Mo;

Ferritic Stainless simbi isimbi isina simbi ine chimiro chayo chinonyanya kuita ferrite pakudziya kwekamuri. Chromium yemukati ndeye 11% -30%, kushomeka kwayo, kusimba uye weldability kuwedzera nekuwedzera kwechromium, chloride stress corrosion resistance iri nani pane mamwe marudzi esimbi isina tsvina, iyi mhando yesimbi kazhinji haina nickel, dzimwe nguva Iinewo zvishoma zveMo, Ti, Nb nezvimwe zvinhu. Iyi mhando yesimbi ine hunhu hwekupisa kwemafuta conductivity, diki yekuwedzera coefficient, yakanaka oxidation kuramba, uye yakanakisa kusagadzikana ngura kuramba. Inonyanya kushandiswa kugadzira kupikisa kwemuchadenga, mhute yemvura, mvura uye oxidizing acids. Corroded parts. Nekudaro, izvo zvemakanika zvivakwa uye maitiro ekuita hazvina kunaka, uye anonyanya kushandiswa muasidhi-inodzivirira zvimiro zvine kushushikana kudiki uye se anti-oxidation simbi. Inogonawo kugadzira zvikamu zvinoshanda pakupisa kwakanyanya, senge gasi turbine zvikamu.