C(%) | 0.95~1.05 | Si(%) | 0.15~0.35 | Mn(%) | 0.25~0.45 | P(%) | ≤ 0.025 |
S(%) | ≤ 0.025 | Cr(%) | 1.40~1.65 |
Cov yam ntxwv ntawm annealed GB GCr15 bearing steel (tseem ceeb rau steel) yog teev nyob rau hauv cov lus hauv qab no:
Tensile | Yield | Modulus ntau | Shear modulus | Poisson tus piv | Thermal conductivity |
MPa | Mpa | Gpa | Gpa | W/mK | |
520 | 415 Min | 140 | 80 | 0.27-0.30 | 46.6 |
Kev kho cua sov ntsig txog
Maj mam rhuab mus rau 790-810 ℃ thiab cia lub sij hawm txaus, cia cov hlau kom sov kom huv si, Tom qab ntawd maj mam txias hauv qhov cub. Cov txheej txheem sib txawv yuav tau txais qhov sib txawv hardness.Lub GCr15 bearing steel yuav tau Hardness MAX 248 HB (Brinell hardness).
Ua kom sov maj mam mus rau 860 ° C, ces quenching los ntawm cov roj tau 62 mus rau 66 HRc hardness. Kub kub tempering: 650-700 ℃, txias hauv huab cua, tau hardness 22 txog 30HRC. Tsawg kub tempering: 150-170 ℃, Txias hauv ari, tau 61-66HRC hardness.
GB GCr15 steel tuaj yeem ua haujlwm kub ntawm 205 txog 538 ° C, GCr15 Cov Kabmob steel tuaj yeem ua haujlwm txias ua haujlwm siv cov txheej txheem ua haujlwm hauv cov txheej txheem annealed lossis normalized.
GB GCr15 steel yog dav siv rau ntau yam kev siv hauv kev siv rau cov bearings hauv rotating machinery. Cov kev siv xws li lub cev valve, twj thiab fittings, lub siab load ntawm lub log, bolts, ob lub taub hau ntsia liaj qhov rooj, lub zog, sab hauv combustion engine. Hluav taws xob locomotives, tshuab cuab yeej, tsheb laij teb, steel dov khoom, tho txawv tshuab, railway tsheb, thiab mining machinery kis ncej ntawm steel pob, cov menyuam thiab ncej tes tsho, thiab lwm yam.