Mhedziso yeBearing Steel
Kutakura simbi inoshandiswa kugadzira mabhora, rollers uye zvindori zvinotakura. Kutakura simbi kune yakakwirira uye yunifomu kuoma, kupfeka kuramba uye yakakwirira elastic muganho. Izvo zvinodikanwa zvekufananidzwa kwemakemikari ekugadzirisa, zvinyorwa uye kugoverwa kwezvisina-metallic inclusions, uye kugoverwa kwecarbides yesimbi inotakura zvakanyanya. Ndiyo imwe yeakanyanya kuomesesa simbi mamakisi mukugadzirwa kwesimbi kwese.
Magiredhi esimbi emasimbi akajairika akakwira kabhoni chromium inotakura simbi dzakatevedzana, dzakadai seGCr15, Gcr15SiMn, nezvimwewo. Pamusoro pezvo, masimbi ane carburized, akadai 20CrNi2Mo, 20Cr2Ni4, nezvimwewo, anogonawo kushandiswa zvinoenderana nemamiriro ekushanda akasiyana, asina tsvina. simbi inotakura simbi, yakadai se9Cr18, nezvimwewo, uye yakakwirira-yekushisa inotakura simbi, dzakadai seCr4Mo4V, Cr15Mo4V2, nezvimwewo.
Pfuma yenyama
Izvo zvemuviri zvimiro zvekubereka simbi zvinonyanya kusanganisira microstructure, decarburized layer, isiri-metallic inclusion uye macrostructure. Kazhinji, zvigadzirwa zvinounzwa nekupisa kutenderedza annealing uye kutonhora kudhirowa annealing. Mamiriro ekutumira acharatidzwa muchibvumirano. Iyo macrostructure yesimbi inofanira kunge isina shrinkage cavity, subcutaneous bubble, white spot uye micro pore. Iyo yepakati porosity uye general porosity haingapfuuri giredhi 1.5, uye kupatsanurwa hakuzopfuure giredhi 2. Iyo annealed chimiro chesimbi ichagoverwa zvakafanana fine-grained pearlite. Kudzika kwe decarburization layer, isiri-metallic inclusions uye carbide kusaenzana kunoenderana nemitemo yenyika.
Basic performance zvinodiwa pakutakura zvinhu zvesimbi
1)high kuonana kuneta simba
2)kuomarara kwepamusoro mushure mekurapwa kwekupisa kana kuomarara kunogona kusangana nezvinodiwa zvekutakura basa rekuita
3)yakakwirira kupfeka kuramba, yakaderera friction coefficient
4)yakakwirira elastic muganho
5)kunaka kwesimba kusimba uye kuomarara kwekutsemuka
6)yakanaka dimensional kugadzikana
7)kuita zvakanaka kwekudzivirira ngura
8) Zvakanaka kutonhora uye kupisa kushanda kushanda.