20CrMnTi(H) kub dov steel puag ncig tuav

20CrMnTi(H) kub dov steel puag ncig tuav

GB 20CrMnTi iav steel yog GB txheem Alloy Carburizing Gearing steel, GB 20CrMnTi cov khoom yog chromium, manganese, titanium alloy steel specification. 20CrMnTi yog sib npaug nrog lwm tus qauv bearing / Gearing steel, gearing steel

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Khoom taw qhia Cov ntaub ntawv technical

Khoom taw qhia

Cov yam ntxwv ntawm hardened steel alloy cuab yeej steel, zoo carburizing cua sov txheej txheem thiab kev ua tau zoo ntawm cov hlau ntawm ≤960 ℃ zoo grain qauv, feem ntau siv nyob rau hauv lub sij hawm ntev cua sov carburizing kub, lub grain loj hlob tsis tshua muaj residual austenite tom qab quenching, yog li ntawd, cov hlau muaj lub zog siab thiab hnav tsis kam, kev ua haujlwm zoo heev, kev ua haujlwm tseem ceeb thiab 20CrMnTi thiab 20CrNi steel zoo sib xws. Tensile zog σ ≥1080MPa, yield zog σ ≥885MPa, elongation δ ≥10%, 45% txo qhov o, cuam tshuam toughness (tshuaj toughness) α ≥69J / cm, hardness ≤207HB, dawb paug qauv loj rau 15mm.

Cov ntaub ntawv technical

GB 20CrMnTi GB/T 3077 Mechanical

Cov khoom siv kho tshuab ntawm GB 20CrMnTi GB/T 3077 cov hlau txiav txim siab txog qhov muaj txiaj ntsig ntawm cov khoom siv thiab tsim kom muaj lub neej ua haujlwm 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 (≥)	863 (≥)	23	33	44	Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam	212

Lub cev ua haujlwm tsis zoo ntawm GB 20CrMnTi GB/T 3077 yog qhia los ntawm qhov ceev, poisson tus piv, thermal conductivity, tshwj xeeb thermal muaj peev xwm, coefficient ntawm thermal expansion, modulus elasticity, hluav taws xob tsis kam, thiab lwm yam.

Kub (°C)	Modulus ntawm elasticity (GPa)	Qhov nruab nrab coefficient ntawm thermal expansion 10-6 / (° C) ntawm 20 (° C) thiab	Thermal conductivity (W/m·°C)	Tshwj xeeb thermal muaj peev xwm (J/kg·°C)	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

Kev kho cua sov ntsig txog

Annealing ntawm 20CrMnTi Alloy Gearing steel

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 20CrMnTi Gearing steel yuav tau Hardness MAX 248 HB (Brinell hardness).

quenching thiab kub ntawm 20CrMnTi iav hlau

Ua kom sov maj mam mus rau 788 ° C, Tom qab ntawd muab tso rau hauv ntsev da dej cub kom 1191 ℃ to 1204 ℃ .quenching los ntawm roj tau 60 mus rau 66 HRc hardness. Kub kub tempering: 650-700 ℃, txias hauv huab cua, tau hardness 22 txog 30HRC. Tsawg kub tempering: 150-200 ℃, Txias hauv ari, tau 61-66HRC hardness.

Ua haujlwm kub thiab txias ua haujlwm ntawm 20CrMnTi Alloy Gearing steel

GB 20CrMnTi steel tuaj yeem ua haujlwm kub ntawm 205 txog 538 ° C, 20CrMnTi Cov Kabmob / Gearing steel tuaj yeem ua haujlwm txias siv cov txheej txheem sib xyaw hauv cov txheej txheem annealed lossis normalized.

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