Kuenzaniswa nesimbi yakajairika,simbi inokoshaine simba repamusoro uye kuoma, zvimiro zvemuviri, zvimiro zvemakemikari, biocompatibility uye process performance. Asisimbi inokoshaine humwe hunhu hwakasiyana kubva kune yakajairika simbi. Kune simbi yakajairika vanhu vazhinji vanonzwisisa zvakanyanya, asi kune maitiro esimbi inokosha, vanhu vazhinji vakataura zvakanyanya kuvhiringika. Naizvozvo, chinyorwa chinotevera chinosimbisa maitiro esimbi dzakakosha.
Zvimiro zvesimbi yakakosha:
Kuenzaniswa nesimbi yakajairika,simbi inokoshaine hunhu hwekuchena kwepamusoro, kufanana kwepamusoro, chimiro chekupedzisira-chakanaka uye kunyatsojeka:
(1)Kuchena kwepamusoro.Zviri mukati gasi uye inclusions (kusanganisira simbi inclusions ine yakaderera melting point) musimbi inogona kuderedzwa. Kana kuchena kwesimbi kuchiwedzerwa kune imwe muganhu, kwete chete zvinhu zvepakutanga zvesimbi zvinogona kuvandudzwa zvikuru, asiwo zvitsva zvesimbi zvinogona kupiwa. Semuenzaniso, iyo okisijeni yemukati mukutakura simbi inoderedzwa kubva ku30 × 10-6 kusvika 5 × 10-6, uye hupenyu hwekutakura hunowedzerwa ne30 nguva. Universal austenitic Stainless simbi inodzivirirwa mukushushikana nekuora kana iyo phosphorus yemukati yakaderedzwa kusvika 3 × 10-6. Pakupera kwezana remakore rechi20, chiyero chekuchena (10) chesimbi chinogona kuwanikwa nekugadzirwa kwemazhinji ndeiyi: hydrogen ≤1, oksijeni ≤5, carbon ≤10, sulfur ≤10, nitrogen ≤15, phosphorus ≤25.

(2) Kufanana kwepamusoro.Kupatsanurwa kwekuumbwa kwesimbi kunotungamirira kuhutano husina kuenzana uye zvinhu zvesimbi, iyo ndeimwe yezvikonzero zvakakosha zvekukundikana kwekutanga kwezvikamu zvesimbi uye kuoma kwekushandisa zvizere zvingaita zvesimbi. Tekinoroji yemazuva ano yekugadzira inofanirwa kuita kuti kufanana kwesimbi kusvike: giya remotokari simbi yakaoma bhendi kushanduka kuri ± 3HRC; Zviri mukati kabhoni, nickel, molybdenum ≤± 0.01%, uye manganese uye chromium ≤± 0.02% zvaidzorwa chaizvo. Saizi yezviyo yesimbi inotakura mushure mekudzima ndeye spherical uye saizi yekuchinja ndeye 0.8± 0.2 μm. Iyo mechanic zvimiro zvelaminated misodzi inodzivirira simbi (Z-direction simbi) mune iyo longitudinal, transverse uye ukobvu kutungamira, kunyanya epurasitiki uye kuoma zvinodiwa zvinowanzofanana.
(3) Ultra-yakanaka chimiro.Ultra-fine microstructure kusimbisa ndiyo yega yekusimbisa nzira inogona kuwedzera simba resimbi pasina kuderera kana kuwedzera zvishoma kuoma. Semuyenzaniso, kana saizi yezviyo zvesimbi isina simbi AFC77 yakanatswa kubva pa60μm kusvika 2.3 μm, kuomarara kwekutsemuka kweKic kunowedzera kubva pa100 kusvika 220MPa · m. Irradiated embrittlement tembiricha ye-coarse-grained steel plate in nuclear reactor pressure vessel is 150 ~ 250 ℃ ukuwo iyo yefire-grained simbi iri 50 ~ 70 ℃. Kana iyo carbide saizi mukutakura simbi yakanaka kusvika ≤0.5μm, hupenyu hwekutakura huchavandudzwa zvakanyanya.
(4) Kunyatsoruramisa. Special steelsinofanira kuva yakanaka pamusoro pemhando uye nhete dimensional tolerances. Kurongeka kwetsvimbo yesimbi inopisa kusvika ku ± 0.1mm, kushivirira kweiyo inopisa yakapetwa pepa coil inosvika ± 0.015 ~ 0.05mm, uye kushivirira kwekutonhora kwakapetwa pepa coil kunosvika ± 0.003mm.