GB 20CrMnTi GB/T 3077 Taw qhia
Rau 10 qib carbon hlau loj hauv GB 20CrMnTi GB / T 3077 tus qauv, cov txheej txheem normalization lossis tempering raug pom zoo. Normalizing txhim kho cov ductility ntawm qib steel thiab tempering nce lub zog ntawm qib C20 thiab siab dua. Cov kev kho cua sov tau pom zoo rau cov hlau tsis muaj zog thiab siab zog yog qhov sib txawv thiab sib txawv nyob ntawm cov qib.
GB 20CrMnTi GB/T 3077yog ib qho ntawm cov khoom tseem ceeb ntawm peb lub tuam txhab. Lwm yam tshaj li muab cov khoom zoo 20CrMnTi nrog cov nqi sib tw, peb kuj pab daws txhua yam kev tsis txaus siab ntawm cov neeg siv khoom. Xws li 20CrMnTi tshuaj muaj pes tsawg leeg, 20CrMnTi zog, 20CrMnTi tawm lub zog, 20CrMnTi tensile lub zog, 20CrMnTi sib npaug qib, thiab lwm yam Meanwhile, peb kuj ua cov txheej txheem rau GB 20CrMnTi GB / T txiav, 307, drilling, thiab lwm yam.
Daim ntawv thov:Alloy structural hlau.
Thaum tshav kub kub kho:1829 degree - 1249 degree .
GB 20CrMnTi GB/T 3077 Chemical Element
GB 20CrMnTi GB / T 3077 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 cov hlau zoo, tab sis raug coj los ntawm cov txheej txheem ore thiab smelting, 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 |
|---|---|---|---|
| Ti | 0.0400 | 0.1000 | - |
| Cr | 1.0000 | 1.3000 | - |
| Mn | 0.8000 | 1.1000 | - |
| Si | 0.1700 | 0.3700 | - |
| C | 0.1700 | 0.2300 | - |
GB 20CrMnTi GB/T 3077 Mechanical Properties
Cov khoom siv kho tshuab ntawm GB 20CrMnTi GB / T 3077 hlau txiav txim siab qhov ntau ntawm kev siv tau ntawm cov khoom siv thiab tsim kom muaj kev pabcuam lub neej uas tuaj yeem xav tau. Cov cuab yeej siv tshuab kuj tseem siv los pab faib thiab txheeb xyuas cov khoom siv.
| 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) |
|---|---|---|---|---|---|---|
| 912 (Ntau dua lossis sib npaug) | 863 ( Ntau dua lossis sib npaug ) | 23 | 33 | 44 | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam | 212 |
GB 20CrMnTi GB/T 3077 Lub cev muaj zog
Kev ua haujlwm ntawm lub cev ntawm GB 20CrMnTi GB / T 3077 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 |
|---|---|---|---|---|---|---|---|
| 24 | - | - | 0.31 | - | |||
| 956 | 121 | - | 12.3 | 423 | - | ||
| 659 | - | 41 | 11.2 | 243 | 423 |
