GB QT400-18 GB/T 1348 Taw qhia
GB QT 400-18 GB/T 1348yog ib qho ntawm cov khoom tseem ceeb ntawm peb lub tuam txhab. Lwm yam tshaj li muab cov khoom zoo QT400-18 nrog tus nqi sib tw, peb kuj pab daws txhua yam kev tsis txaus siab ntawm cov neeg siv khoom. Xws li QT400-18 tshuaj muaj pes tsawg leeg, QT400-18 zog, QT400-18 tawm lub zog, QT400-18 tensile zog, QT400-18 qib sib npaug, thiab lwm yam. Meanwhile, peb kuj tseem ua haujlwm rau GB QT400-18 GB/T 1348, suav nrog kev txiav, khoov, vuam, drilling, thiab lwm yam.
Daim ntawv thov:Hlau castings.
Thaum tshav kub kub kho:1753 degree - 1495 degree .
GB QT400-18 GB/T 1348 Chemical Element
GB QT400-18 GB/T 1348 yog cov khoom muag kub ntawm peb lub tuam txhab. Peb GB QT400-18 GB/T 1348 chemical muaj pes tsawg leeg yog tswj nruj me ntsis raws li cov txheej txheem GB/T 1348.
Lub caij no, peb cov qib siab GB QT400-18 GB/T 1348 cov kab ntau lawm siv zog los tswj cov impurities kom tsawg, thiaj li ua kom GB QT400-18 GB/T 1348 ua si nws qhov kev ua tau zoo tshaj plaws. Hauv qab no yog qhov feem ntawm cov ntsiab lus tseem ceeb hauv GB QT400-18 GB/T 1348:
| Element | Min | Max | Zoo sib xws |
|---|---|---|---|
| Si | 2.5000 | 3.3000 | - |
| S | - | 0.0200 | - |
| P | - | 0.0500 | - |
| Mn | - | 0.3000 | - |
| C | 3.5000 | 4.0000 | - |
GB QT400-18 GB/T 1348 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) |
|---|---|---|---|---|---|---|
| 885 (Ntau dua lossis sib npaug) | 179 (Ntau dua lossis sib npaug) | 44 | 42 | 14 | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam | 423 |
GB QT400-18 GB/T 1348 Lub cev muaj zog
Lub cev lub cev ntawm GB QT400-18 GB/T 1348 feem ntau yog qhia los ntawm cov qauv ntawm cov hluav taws xob tiv thaiv tus nqi, thermal conductivity, tshwj xeeb thermal muaj peev xwm, coefficient ntawm thermal expansion, elasticity, poisson tus piv, ntom, 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 | - | - | 0.34 | - | |||
| 111 | 745 | - | 24.3 | 123 | - | ||
| 113 | - | 44 | 22.2 | 223 | 313 |
