4140 steel yog ib qho nrov alloy hlau paub txog nws lub zog, toughness, thiab ntau yam. Nws belongs rau tsev neeg ntawm chromium-molybdenum steels, muab ib qho kev sib xyaw ua ke ntawm cov khoom siv kho tshuab uas ua rau nws xaiv rau kev siv hauv kev lag luam. Engineers, fabricators, thiab manufacturers dav siv cov hlau no rau txhua yam ntawm tsheb qhov chaw mus rau machinery Cheebtsam.
Hauv tsab xov xwm SEO no, sakysteel nthuav qhia cov ntsiab lus dav dav ntawm4140 ua, suav nrog nws cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, cov txheej txheem kho cua sov, thiab kev siv ntau.
Kev faib tawm ntawm 4140 Steel
4140 yog cov hlau tsis tshua muaj hlau uas poob rau hauv SAE-AISI kev faib tawm. Nws tseem hu uaTIAB SA 4140, EN19 (hauv Tebchaws Europe), thiabSCM440 (hauv Nyiv). Lub npe "4140" yog hais txog cov ntsiab lus alloy tshwj xeeb:
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"41" qhia txog chromium-molybdenum hlau
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"40" sawv cev rau kwv yees cov ntsiab lus carbon (0.40%)
4140 steel tsis yog stainless hlau, vim nws tsis muaj chromium txaus los muab kev tiv thaiv corrosion. Hloov chaw, nws yog khoom plig rau nws cov neeg kho tshuab lub zog thiab hardness tom qab kev kho cua sov.
Tshuaj muaj pes tsawg leeg ntawm 4140 Steel
Cov tshuaj muaj pes tsawg leeg ntawm 4140 yog dab tsi muab nws cov khoom kho kom zoo dua qub. Tej yam muaj xws li:
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Cov pa roj carbon (C):0.38% - 0.43%
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Chromium (Cr):0.80% - 1.10%
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Manganese (Mn):0.75% - 1.00%
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Molybdenum (Molybdenum):0.15% - 0.25%
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Silicon (Si):0.15% - 0.35%
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Phosphorus (P):≤ 0.035%
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Sulfur (S):≤ 0.040%
Cov ntsiab lus no ua hauj lwm ua ke los txhim kho hardenability, hnav tsis kam, thiab tag nrho durability, ua 4140 mus rau cov khoom siv rau kev xav tau cov khoom siv tshuab.
Mechanical Properties ntawm 4140 Steel
4140 muaj ntau yam zoo ntawm cov khoom siv kho tshuab, tshwj xeeb tshaj yog tom qab kev kho cua sov kom zoo. Cov no suav nrog:
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Tensile zog:Mus txog 1100 MPa (160 ksi)
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Yield zog:Nyob ib ncig ntawm 850 MPa (123 ksi)
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Elongation ntawm Break:Kwv yees li 20%
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Hardness:Feem ntau 197 txog 235 HB nyob rau hauv annealed mob, mus txog 50 HRC tom qab quenching thiab tempering
Cov txiaj ntsig no tuaj yeem sib txawv nyob ntawm daim ntawv hlau (bar, phaj, forged) thiab kev kho cua sov.
Kev kho cua sov ntawm 4140 Hlau
Kev kho cua sov yog txheej txheem tseem ceeb uas txhim kho kev ua haujlwm ntawm4140 ua. Cov hlau tuaj yeem ua raws li cov txheej txheem hauv qab no:
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Annealing
Maj mam txias los ntawm txog 850 ° C los txhim kho machinability thiab txo cov kev ntxhov siab sab hauv. Qhov no ua rau cov qauv softer nrog txhim kho ductility. -
normalizing
Rhaub rau ib ncig ntawm 870 ° C los kho cov qauv nplej. Muab qhov sib npaug ntawm lub zog thiab toughness. -
Quenching thiab Tempering
Hardened los ntawm cua sov txog li 845 ° C thiab ceev ceev txias nyob rau hauv roj los yog dej, ua raws li los ntawm tempering mus rau qhov xav tau hardness theem. Qhov no ua rau kom muaj zog thiab hnav tsis kam. -
Kev ntxhov siab
Ua nyob ib ncig ntawm 650 ° C kom txo qis kev ntxhov siab los ntawm kev siv tshuab lossis vuam.
Ntawm sakysteel, peb muab4140 uanyob rau hauv ntau yam kev kho cua sov raws li cov neeg yuav tsum tau ua, kom ntseeg tau tias qhov ua tau zoo tshaj plaws hauv koj daim ntawv thov.
Qhov zoo ntawm 4140 Steel
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High Strength-rau-Weight Ratio:Zoo tagnrho rau kev siv hnyav-sensitive.
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Zoo Fatigue Resistance:Withstands cyclic loading, haum rau lub zog thiab shafts.
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Zoo heev Hardenability:Ua tiav siab hardness tom qab quenching.
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Machineability:Yooj yim machinable nyob rau hauv annealed los yog normalized tej yam kev mob.
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Weldability:Nws tuaj yeem raug welded nrog preheating thiab kev kho tom qab vuam.
Cov txiaj ntsig no ua rau 4140 steel qhov kev xaiv pheej yig rau ntau daim ntawv thov kev lag luam siab.
Kev siv ntawm 4140 Steel
Vim nws lub zog txhua yam thiab ntau yam, 4140 steel yog siv nyob rau hauv ntau yam kev lag luam:
Automotive Kev Lag Luam
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Axles
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Crankshafts
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Gears
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Steering knuckles
Roj thiab Roj
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Laum dab tshos
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Cov cuab yeej sib txuas
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Txuas rods
Aerospace
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Landing gear Cheebtsam
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Ncej
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High-stress structural qhov chaw
Muaj Machinery
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Couplings
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Forged Cheebtsam
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Tuag tuav
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Spindles
At sakysteel ua, peb tau muab4140 uacov khoom rau cov neeg muas zaub thoob plaws cov sectors no, muab kev txhim khu kev qha zoo thiab meej customization.
Yuav ua li cas 4140 Piv rau Lwm Cov Hlau
4140 vs. 1045 Carbon Steel:
4140 muaj kev hnav zoo dua thiab lub zog tensile ntau dua vim yog cov ntsiab lus alloying. 1045 yog pheej yig dua tab sis tsis muaj zog.
4140 vs 4340 Hlau:
4340 muaj cov ntsiab lus ntau dua nickel, muab cov tawv tawv zoo dua thiab qaug zog. 4140 yog tus nqi ntau dua rau kev siv dav dav.
4140 vs. Stainless hlau (xws li, 304 lossis 316):
Stainless hlau muaj kev tiv thaiv corrosion tab sis qis zog. 4140 yog qhov zoo dua nyob rau hauv cov ntawv thov siab uas tsis muaj kev cuam tshuam rau qhov chaw corrosive.
Daim ntawv muaj nyob ntawm sakysteel
sakysteel muab 4140 steel hauv cov khoom hauv qab no:
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Round Bars (Kub Rolled, Txias Kos, Peeled)
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Flat Bars thiab Phaj
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Forged Blocks thiab Rings
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Hollow Bars thiab Tubes (raws li kev thov)
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Txiav-rau-loj precision blanks
Tag nrho cov khoom muaj nyob nrogEN10204 3.1 daim ntawv pov thawj, thiab peb kuj muab kev pabcuam CNC machining thiab kho cua sov.
Xaus
4140 yog ntau yam, ua tau zoo alloy hlau uas ua tau raws li qhov xav tau ntawm ntau yam kev thov. Nws ua ke ntawm lub zog, toughness, thiab nqi-efficiency ua rau nws nyiam cov khoom siv rau cov neeg kho tshuab engineers thiab manufacturers thoob ntiaj teb.
Txawm hais tias koj xav tau cov khoom siv raw lossis cov khoom tiav,sakysteel uayog koj tus khub ntseeg siab rau 4140 alloy steel. Hu rau peb pab pawg kws tshaj lij hnub no los tham txog koj cov kev xav tau thiab tau txais cov lus hais tsim nyog.
Post lub sij hawm: Lub Xya hli ntuj-29-2025