4340 ntxiv rau QT Forged Alloy Steel Round Bar Ua tiav Ntau Lawm
--- Peb Hlis 4, 2023 ---
Sichuan Huitai tsim4340 Forged Hlau Round Bar. Txoj kab uas hla 780mm x Length 2570mm, hnyav 9700Kg; Q ntxiv rau T (Quenching ntxiv rau Tempering) Cov khoom xa tuaj nrog hardness 30HRC.
4340 steel sib npaug Gardes:
Suav GB steel qib: 40CrNi2MoA,
German DIN steel qib 36CrNiMo4,
German DIN khoom naj npawb 1.6511,
Fabkis NF tus qauv 40NCD3,
Japanese JIS tus qauv SNCM439,
British BS txuj 816M40,
AISI / ASTM 4340 Asmeskas
American UNS tus qauv G43400
4340 Alloy Steel Chemical muaj pes tsawg leeg tshaj tawm
Cov pa roj carbon C: 0 38-0.43
Silicon Si: 015-0.35
Manganese Mn: 0 60-0.80
Sulfur S: Tsawg dua lossis sib npaug rau 0.040
Phosphorus P: Tsawg dua lossis sib npaug rau 0.035
Chromium Cr: {{0}}.70 ~ 0.90
Molybdenum Mo: 0 20-0.30
Nickel: 1 65-2 00
Tensile zog σ B (MPa): Ntau dua lossis sib npaug rau 980 (100)
Yield zog σ S (MPa): Ntau dua lossis sib npaug rau 835 (85)
Elongation tus nqi δ 5 (%) : Ntau dua lossis sib npaug rau 12
Qhov txo qis ntawm cheeb tsam ψ (%) : Ntau dua lossis sib npaug rau 55
Lub zog cuam tshuam Akv (J): Ntau dua lossis sib npaug rau 78
4340 Steel Yam ntxwv
Nws muaj lub zog siab, toughness, zoo heev hardenability, thiab stability tiv thaiv overheating, tab sis siab rhiab heev rau dawb me ntsis thiab temper brittleness. Weldability tsis zoo, yuav tsum tau kub kub preheating ua ntej vuam, kev ntxhov siab tom qab vuam, thiab siv tom qab tempering.
1.Mechanical zog:
Elongation tus nqi δ 5 (%) : Ntau dua lossis sib npaug rau 12
Qhov txo qis ntawm cheeb tsam ψ (%) : Ntau dua lossis sib npaug rau 55
Lub zog cuam tshuam Akv (J): Ntau dua lossis sib npaug rau 78
Qhov cuam tshuam toughness tus nqi KV (J / cm2): Ntau dua lossis sib npaug rau 98 (10)
Qauv loj: Qhov loj ntawm cov qauv dawb paug yog 25mm
2. Kev kho cua sov
(Quenching 850 degrees; coolant: roj; tempering kub 600 degrees; coolant: dej, roj);
Lub Brinell hardness HBW ntawm cov hlau nyob rau hauv lub annealed los yog high-temperature tempered mov lub xeev yog tsawg dua los yog sib npaug rau 269;
3.Delivery Status
Kev xa khoom yuav tsum tau ua nyob rau hauv ib qho kev kho cua sov (normalized, annealed, los yog high-temperature tempered) los yog tsis kho cua sov lub xeev, thiab cov xwm txheej xa khoom yuav tsum tau teev nyob rau hauv daim ntawv cog lus.
4340 steel daim ntawv thov
Siv los ua ib qho tseem ceeb quenched thiab tempered Cheebtsam uas yuav tsum tau zoo toughness, siab zog, thiab loj qhov ntev, xws li heavy-duty machinery shafts, turbine shafts nrog ib txoj kab uas hla ntau tshaj 250mm, nyoob hoom qav taub rotor shafts, turbine shafts, hniav, hnyav-duty kis tau tus mob Cheebtsam. rau turbojet cav, thiab crankshaft fasteners. Gears, thiab lwm yam; Nws kuj tseem siv tau los ua haujlwm rotor shafts thiab cov hniav nrog kub tshaj 400 degree; Tom qab kev kho nitriding, nws tseem tuaj yeem siv los tsim cov khoom tseem ceeb nrog kev ua haujlwm tshwj xeeb, thiab tuaj yeem siv los ua lub zog siab ultra-siab steel tom qab qhov kub thiab txias txias lossis isothermal quenching.
Kev siv
Tsim cov khoom tseem ceeb nrog lub zog siab thiab zoo yas, thiab tsim cov khoom tseem ceeb nrog kev ua haujlwm tshwj xeeb tom qab kev kho nitriding, xws li shafts, gears, fasteners, thiab lwm yam.
