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Stainless simbi classification

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.

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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.

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Nguva yekutumira: Sep-28-2022