Kupatsanurwa kweSimbi Isina Kushanda

Simbi isina ngura inogona kukamurwa kuita simbi isina ngura inonzi austenitic, ferritic stainless steel, martensitic stainless steel uye duplex stainless steel zvichienderana nechimiro chayo chemetallographic.

(1) Simbi isina ngura yeAustenitic

Chimiro chekupisa kwemukamuri chesimbi isina tsvina inonzi austenitic iaustenite, iyo inoumbwa nekuwedzera nickel yakakodzera kune simbi isina tsvina ine chromium yakawanda.

Simbi isina ngura yeAustenitic ine chimiro chakasimba cheaustenite chete kana Cr iine inenge 18%, Ni 8% kusvika 25%, uye C inenge 0.1%. Simbi isina ngura yeAustenitic yakavakirwa paCr18Ni9 iron-based alloy. Nekushandiswa kwakasiyana, nhanhatu dzesimbi dzisina ngura dzeaustenitic dzakagadzirwa.

Magiredhi akafanana esimbi isina chinhu 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;

Simbi isina ngura yeAustenitic ine huwandu hwakawanda hweNi neCr, zvichiita kuti simbi ive austenite patembiricha yemumba. Ine plasticity yakanaka, kusimba, weldability, corrosion uye magnetic properties isina magnetic kana kusasimba. Ine corrosion yakanaka mu oxidizing uye reduction media. Inoshandiswa kugadzira michina inodzivirira acid, senge midziyo inodzivirira ngura uye michina yekufambisa. Mapaipi, zvikamu zvemidziyo inodzivirira nitric acid, nezvimwewo, zvinogonawo kushandiswa sechinhu chikuru chekushongedza. Simbi isina ngura yeAustenitic inowanzo tora mushonga wekugadzirisa, kureva kuti, simbi inopiswa kusvika 1050 kusvika 1150°C, uye yozotonhodzwa nemvura kana kutonhodzwa nemhepo kuti iwane chimiro cheaustenite chechikamu chimwe chete.

(2) simbi isina ngura yeferritic

Mhando dzesimbi isingatsvi yeferritic dzinoshandiswa zvakanyanya: (1) 1Cr17; (2) 00Cr30Mo2; (3) 00Cr17; (4) 00Cr17; (5) 1Cr17Mo; (6) 00Cr27Mo;

Simbi isina ngura yeFerritic isimbi isina ngura ine chimiro chayo chikuru chiri ferrite patembiricha yemumba. Chromium iri pakati pe11% ne30%, kuramba kwayo ngura, kusimba uye kuchinjika kwayo kunowedzera nekuwedzera kwechromium, kuramba ngura kwechloride kuri nani pane mamwe marudzi esimbi isina ngura, rudzi urwu rwesimbi haruna nickel, dzimwe nguva runewo huwandu hushoma hweMo, Ti, Nb nezvimwe zvinhu. Rudzi urwu rwesimbi rune hunhu hwekupisa kukuru, kuwedzera kudiki, kuramba kwakanaka kweoxidation, uye kuramba kwakanyanya kwekupisa. Inonyanya kushandiswa kugadzira kuramba kwemhepo, utsi hwemvura, mvura uye oxidizing acids. Zvikamu zvakaora. Zvisinei, hunhu hwemakanika uye mashandiro ekushanda hazvina kunaka, uye zvinonyanya kushandiswa muzvivakwa zvinodzivirira acid zvisina kushushikana zvakanyanya uye sesimbi dzinodzivirira oxidation. Inogona zvakare kugadzira zvikamu zvinoshanda pakupisa kwakanyanya, senge zvikamu zvegasi turbine.