Kune mhando shanu dzinokosha dzesimbi isina ngura:austenitic, ferritic, martensitic, duplex, uye kuoma kwemvura.
(1) Austenitic Stainless steels haisi magineti, uye mumiriri simbi mamakisi ari 18% chromium akawedzera uye imwe chiyero nickel akawedzera kuwedzera ngura kuramba.Iwo anoshandiswa zvakanyanya simbi mamakisi.
(2) Ferrite ine magineti, uye chromium chinhu ndicho chikuru chirimo, ine chikamu che17%.Nyaya iyi ine yakanaka oxidation kuramba.
(3) Martensitic Stainless simbi zvakare ine magineti, zviri mukati mechromium zvinowanzoita 13%, uye ine chikamu chakakodzera chekabhoni, inogona kuomeswa nekudzima uye kupisa.
(4) Duplex simbi isina tsvina ine yakasanganiswa chimiro cheferrite uye austenite, zviri mukati mechromium zviri pakati pe18% ne28%, uye zviri mukati nickel zviri pakati pe4.5% ne8%.Ivo vanoshingirira zvakanyanya kune chloride corrosion.Zvibereko zvakanaka.
(5)Izvo zvakajairwa zvechromium mukunaya kwesimbi isina tsvina ndeye 17, uye imwe huwandu hwenickel, mhangura uye niobium inowedzerwa, inogona kuomeswa nekunaya uye kuchembera.
Zvinoenderana neiyo metallographic chimiro, inogona kukamurwa kuita:
(1)Ferritic Stainless steel (400 series), chromium Stainless steel, inonyanya kumiririrwa neGr13, G17, Gr27-30;
(2)Austenitic Stainless steel (300 series), chromium-nickel Stainless steel, inonyanya kumiririrwa ne304, 316, 321, nezvimwewo;
(3)Martensitic Stainless simbi (200 series), chromium-manganese simbi isina tsvina, yakakwira kabhoni yemukati, inonyanya kumiririrwa ne1Gr13, nezvimwe.
Nguva yekutumira: Sep-28-2022