Martensitic Stainless simbi inoreva rudzi rwesimbi isina tsvina ine microstructure inonyanya kuve martensite. Iyo chromium yemukati yemartensitic Stainless simbi iri pakati pe12% - 18%, uye ayo makuru alloying zvinhu isimbi, chromium, nickel uye kabhoni.
Martensitic Stainless simbi inokwanisa kugadzirisa zvimiro zvayo zvemuchina kuburikidza nekupisa kupisa uye imhando yesimbi isina simbi yakaoma. Martensitic Stainless simbi inogona kupatsanurwa kuita martensitic chromium simbi uye martensitic chromium-nickel simbi zvinoenderana neakasiyana makemikari anoumbwa.
Kukurumidza Maonero eMartensitic Stainless Steel | |
| Category | Simbi isina ngura |
| Tsanangudzo | Rudzi rwesimbi yakaoma isina tsvina ine Martensitic chimiro |
| Kupisa Kurapa | Kudziya, kudziya, kudziya |
| Alloy Elements | Cr, Ni, C, Mo, V |
| Weldability | Murombo |
| Magnetic | Pakati |
| Micro Structure | Kunyanya Martensitic |
| Typical Grades | Cr13, 2Cr13, 3Cr13 |
| Applications | Steam turbine blade, Tableware, Zvishandiso zvekuvhiya, Aerospace, Marine industries |
Martensitic Stainless simbi inoreva rudzi rwesimbi isina tsvina ine microstructure inonyanya kuve martensite. Iyo chromium yemukati yemartensitic Stainless simbi iri pakati pe12% - 18%, uye ayo makuru alloying zvinhu isimbi, chromium, nickel uye kabhoni.
Martensitic Stainless simbi inokwanisa kugadzirisa zvimiro zvayo zvemuchina kuburikidza nekupisa kupisa uye imhando yesimbi isina simbi yakaoma. Martensitic Stainless simbi inogona kupatsanurwa kuita martensitic chromium simbi uye martensitic chromium-nickel simbi zvinoenderana neakasiyana makemikari anoumbwa.
1. Martensitic Chromium Steel
Pamusoro pechromium, martensitic chromium simbi inewo imwe huwandu hwekabhoni. Iyo chromium yemukati inosarudza kusaora kwesimbi. Iyo yakakwirira iyo kabhoni yemukati, iyo inowedzera simba, kuomarara uye kupfeka kuramba. Iyo yakajairika chimiro cherudzi urwu rwesimbi martensite, uye mamwe anewo mashoma eaustenite, ferrite kana pearlite. Inonyanya kushandiswa kugadzira zvidimbu, zvikamu, zvishandiso, mapanga, nezvimwe zvinoda simba rakakwirira uye kuoma, asi hazvidi kupikisa kwepamusoro. Magiredhi esimbi akajairika 2Crl3, 4Crl3, 9Crl8, nezvimwe.
2. Martensitic Chromium-Nickel simbi
Martensitic chromium-nickel simbi inosanganisira martensitic kunaya kwemvura inoomesa simbi isina tsvina, semi-austenitic kunaya kwemvura inoomesa simbi isina tsvina uye maraging simbi isina tsvina, nezvimwe. Iyi mhando yesimbi ine yakaderera kabhoni yemukati (isingasviki 0.10%) uye ine nickel. Mamwe mamakisi anewo zvinhu zvakakwirira zvakaita se molybdenum nemhangura. Naizvozvo, rudzi urwu rwesimbi rune simba rakanyanya, uku richibatanidza kusimba uye kusimba pamwe nekudzivirira ngura. Kuita, weldability, nezvimwewo zviri nani pane martensitic chromium simbi. Crl7Ni2 ndiyo inonyanya kushandiswa pasi-nickel martensitic simbi isina tsvina.
Martensitekunaya kunoomesa tsvinasimbi kazhinji inewo Al, Ti, Cu uye zvimwe zvinhu. Iyo inonamira Ni3A1, Ni3Ti uye mamwe matanho ekusimbisa kupararira pane martensite matrix kuburikidza nekunaya kwemvura kuomesa kuti iwedzere kuvandudza kusimba kwesimbi. Semi-austenite (kana semi-martensitic) kunaya kuomesa Stainless simbi, nokuti quenched mamiriro achiri austenite, saka kudzimwa mamiriro anogona achiri kutonhora akashanda uye ipapo kusimbiswa nepakati kurapwa, kuchembera kurapwa uye mamwe maitiro. Nenzira iyi, iyo austenite mumartensitic precipitation inoomesa simbi isina tsvina inogona kushandurwa zvakananga kuita martensite mushure mekudzima, izvo zvinotungamira mukukanganisa kwekuomerwa kunotevera kugadzirisa uye kuumba. Inowanzo shandiswa simbi mamakisi 0Crl7Ni7AI, 0Crl5Ni7M02A1 zvichingodaro. Iri rudzi rwesimbi rine simba rakati wandei, rinowanzosvika 1200-1400 MPa, uye rinowanzo shandiswa kugadzira zvikamu zvemaumbirwo zvisingade kusimba kwekuora asi zvinoda simba rakakura.
Iyo inowanzoshandiswa kupisa kupisa kwemartensitic Stainless simbi inodzima uye kupisa kurapwa. Kazhinji sarudza kutonhora mumafuta kana mhepo pane tembiricha ye950-1050 ℃. Wobva wapisa pa650-750°C. Kazhinji, inofanira kuderedzwa pakarepo mushure mekudzima kuitira kudzivirira kukanda kubva pakuputika nekuda kwekunetseka kwechimiro chakadzimwa.
Yakakwirira-yakasimba yakaderera-kabhoni martensitic Stainless simbi castings ine shoma shoma yenickel, molybdenum, silicon uye zvimwe zvinhu zvealloying zvine yakanaka yakazara ma mechanical zvivakwa, welding zvivakwa uye kupfeka kuramba mushure me normalizing uye kudzikama. Kukandwa kwakadaro kunoshandiswa zvakanyanya mukubatanidza kukanda uye kukanda + welding impellers emahombe hydraulic turbines. Muchiitiko ichi, kupisa kwekupisa kunowanzo kusarudzwa kunowanzoita pa950 - 1050 ℃ uye kupisa pa600 -670 ℃.
Nguva yekutumira: Aug-17-2021