GB GCr15 GB/T 18254 Taw qhia
GB GCr15 GB/T 18254yog ib qho ntawm cov khoom tseem ceeb ntawm peb lub tuam txhab. Lwm yam tshaj li muab cov khoom zoo GCr15 nrog cov nqi sib tw, peb kuj pab daws txhua yam kev tsis txaus siab ntawm cov neeg siv khoom. Xws li GCr15 tshuaj lom neeg muaj pes tsawg leeg, GCr15 zog, GCr15 tawm lub zog, GCr15 tensile zog, GCr15 qib sib npaug, thiab lwm yam. Meanwhile, peb kuj ua cov txheej txheem rau GB GCr15 GB / T 18254, suav nrog txiav, dabtsi yog khoov, vuam, drilling, thiab lwm yam.
Daim ntawv thov:High carbon chromium bearing hlau.
Thaum tshav kub kub kho:1376 degree - 1691 degree .
GB GCr15 GB/T 18254 Chemical Element
GB GCr15 GB / T 18254 ntxiv rau carbon, hlau kuj muaj ib tug me me ntawm manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), oxygen (O), nitrogen (N) thiab hydrogen ( H). Cov ntsiab lus no tsis txhob txwm ntxiv los txhim kho qhov zoo ntawm cov hlau, tab sis yog coj los ntawm ore thiab smelting txheej txheem, yog li lawv hu ua impurity ntsiab. Cov impurities no muaj qee yam cuam tshuam rau cov khoom ntawm cov hlau. Txhawm rau kom ntseeg tau qhov zoo ntawm cov hlau, cov tshuaj muaj pes tsawg leeg ntawm txhua yam hlau yog nruj me ntsis raws li cov qauv kev.
Cov ntsiab lus tseem ceeb yog raws li hauv qab no:
| Element | Min | Max | Zoo sib xws |
|---|---|---|---|
| Si | 0.1500 | 0.3500 | - |
| S | - | 0.0250 | - |
| P | - | 0.0250 | - |
| Ni | - | 0.3000 | - |
| Mo | - | 0.1000 | - |
| Mn | 0.2500 | 0.4500 | - |
| Cu | - | 0.2500 | - |
| Cr | 1.4000 | 1.6500 | - |
| C | 0.9500 | 1.0500 | - |
GB GCr15 GB/T 18254 Mechanical Properties
| Yield Rp0.2(MPa) |
Tensile Rm(MPa) |
Kev cuam tshuam KV/Ku (J) |
Elongation A (%) |
Kev txo qis hauv ntu ntu ntawm pob txha Z (%) |
Raws li-kub-kho mob | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 669 (Ntau dua lossis sib npaug) | 643 (Ntau dua lossis sib npaug) | 11 | 23 | 32 | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam | 441 |
GB GCr15 GB/T 18254 Lub cev muaj zog
Kev ua haujlwm ntawm lub cev ntawm GB GCr15 GB / T 18254 feem ntau yog qhia los ntawm qhov ntom ntom, poisson tus piv, thermal conductivity, thermal muaj peev xwm, coefficient ntawm thermal expansion, modulus elasticity, hluav taws xob tsis kam, thiab lwm yam.
| Kub (degree) |
Modulus ntawm elasticity (GPa) |
Lub ntsiab lus coefficient ntawm thermal expansion 10-6/( degree ) ntawm 20 (degree) thiab | Thermal conductivity (W / m· degree) |
Tshwj xeeb thermal muaj peev xwm (J / kg · degree) |
Tshwj xeeb hluav taws xob resistivity (Ω mm² / m) |
Qhov ntom (kg/dm³) |
Poisson tus coefficient, ν |
|---|---|---|---|---|---|---|---|
| 43 | - | - | 0.24 | - | |||
| 555 | 548 | - | 22.3 | 134 | - | ||
| 844 | - | 32 | 31.2 | 132 | 413 |
