Thaum nws los txog rau kev xaiv cov hlau alloy zoo rau kev siv tshuab, aerospace, lossis kev siv hauv kev lag luam, peb lub npe feem ntau los rau pem hauv ntej -4140, 4130, thiab4340Cov hlau chromium-molybdenum uas tsis muaj hlau ntau no muaj npe nrov rau lawv lub zog, kev tawv, thiab kev siv tau yooj yim. Tab sis koj yuav paub li cas tias qhov twg yog qhov haum rau koj qhov project?
Hauv phau ntawv qhia no, peb sib piv4140 vs 4130 vs 4340 cov hlau tuavhla cov ntsuas tseem ceeb xws li cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov nyuaj, weldability, kev kho cua sov, thiab kev siv tau - pab cov engineers, cov neeg tsim khoom, thiab cov neeg yuav khoom txiav txim siab txog cov khoom siv.
1. Kev Taw Qhia Txog 4140, 4130, thiab 4340 Cov Hlau Tuav
1.1 Cov Hlau Uas Muaj Hlau Tsawg Yog Dab Tsi?
Cov hlau uas tsis muaj hlau ntau yog cov hlau carbon uas muaj cov khoom sib xyaw me me xws li chromium (Cr), molybdenum (Mo), thiab nickel (Ni) los txhim kho cov khoom tshwj xeeb.
1.2 Kev Txheeb Xyuas Txog Txhua Qib Kawm
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4140 Hlau: Ib hom hlau uas siv tau ntau yam uas muaj lub zog thiab tawv heev, siv dav hauv kev ua cov cuab yeej, cov khoom siv hauv tsheb, thiab kev tsim kho dav dav.
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4130 Hlau: Paub txog nws qhov kev tawv siab thiab weldability, feem ntau siv rau hauv kev tsav dav hlau thiab kev sib tw motorsports.
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4340 Hlau: Ib qho hlau nickel-chromium-molybdenum uas muaj lub zog siab heev thiab tiv taus kev qaug zog, nyiam siv rau hauv aerospace thiab cov ntawv thov hnyav.
2. Kev Sib Piv Txog Cov Tshuaj Lom Zem
| Khoom | 4130 (%) | 4140 (%) | 4340 (%) |
|---|---|---|---|
| Cov pa roj carbon (C) | 0.28 – 0.33 | 0.38 – 0.43 | 0.38 – 0.43 |
| Manganese (Mn) | 0.40 – 0.60 | 0.75 – 1.00 | 0.60 – 0.80 |
| Chromium (Cr) | 0.80 – 1.10 | 0.80 – 1.10 | 0.70 – 0.90 |
| Molybdenum (Mo) | 0.15 – 0.25 | 0.15 – 0.25 | 0.20 – 0.30 |
| Nickel (Ni) | – | – | 1.65 – 2.00 |
| Silicon (Si) | 0.15 – 0.35 | 0.15 – 0.30 | 0.15 – 0.30 |
Cov Lus Tseem Ceeb:
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4340tau ntxivnpib tsib, muab nws lub zog siab dua thiab qaug zog tiv taus.
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4130muaj cov pa roj carbon tsawg dua, txhim khokev vuam tau.
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4140muaj cov pa roj carbon thiab manganese ntau dua, ua rau lub cev muaj zogqhov nyuaj thiab lub zog.
3. Kev Sib Piv Txog Cov Khoom Siv Kho Tshuab
| Vaj tse | 4130 Hlau | 4140 Hlau | 4340 Hlau |
|---|---|---|---|
| Lub zog Tensile (MPa) | 670 – 850 | 850 – 1000 | 930 – 1080 |
| Lub Zog Tawm (MPa) | 460 – 560 | 655 – 785 | 745 – 860 |
| Kev ntev (%) | 20 – 25 | 20 – 25 | 16 – 20 |
| Qhov nyuaj (HRC) | 18 – 25 | 28 – 32 | 28 – 45 |
| Kev Cuam Tshuam Toughness (J) | Siab | Nruab nrab | Siab heev |
4. Kev Kho Mob Kub thiab Kev Ua Kom Ruaj Khov
4130
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Kev ua kom zoo li qubKub: 870–900°C
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Kev ua kom tawvRoj quench los ntawm 870 ° C
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Kev ua kom sovKub: 480–650°C
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Zoo tshaj plaws rau: Cov ntawv thov xav taukev vuam tauthiabkev ua siab tawv
4140
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Kev ua kom tawvRoj tua hluav taws ntawm 840–875 ° C
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Kev ua kom sovKub: 540–680°C
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Kev ua kom tawvZoo heev — ua tau kom tawv tawv tob dua
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Zoo tshaj plaws rau: Cov shafts muaj zog heev, cov iav, cov crankshafts
4340
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Kev ua kom tawvRoj los yog polymer quench ntawm 830–870 ° C
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Kev ua kom sovKub: 400–600°C
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Tseem ceeb: Khaws lub zog txawm tias tom qab ua kom tawv tob tob
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Zoo tshaj plaws rau: Cov iav tsaws dav hlau, cov khoom siv tsav hnyav
5. Kev vuam thiab kev siv tshuab
| Vaj tse | 4130 | 4140 | 4340 |
|---|---|---|---|
| Kev vuam tau | Zoo heev | Ncaj Ncees mus rau Qhov Zoo | Ncaj ncees |
| Kev siv tshuab tau | Zoo | Zoo | Nruab nrab |
| Ua kom sov ua ntej | Pom zoo rau cov ntu tuab (> 12 hli) | ||
| Kev Kho Mob Kub Tom Qab Weld | Pom zoo rau 4140 thiab 4340 kom txo qhov kev ntxhov siab thiab kev tawg |
4130sawv tawm rau qhov yooj yim weldable siv TIG / MIG yam tsis muaj kev tawg ntau dhau, zoo tagnrho rau cov qauv raj zoo li lub tawb dov lossis cov thav duab dav hlau.
6. Cov ntawv thov los ntawm kev lag luam
6.1 4130 Cov Ntawv Thov Hlau
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Cov yeeb nkab aerospace
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Cov thav duab sib tw thiab cov tawb dov
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Cov thav duab maus taus
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Cov khoom siv txais phom
6.2 4140 Cov Ntawv Thov Hlau
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Cov cuab yeej tuav
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Cov crankshafts
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Cov iav
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Axles thiab shafts
6.3 4340 Cov Ntawv Thov Hlau
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Cov khoom siv tsaws dav hlau
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Cov bolts thiab fasteners muaj zog heev
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Cov khoom siv tshuab hnyav
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Cov chaw ua haujlwm roj thiab roj av
7. Kev Xav Txog Tus Nqi
| Qib | Tus nqi sib piv | Muaj |
|---|---|---|
| 4130 | Qis | Siab |
| 4140 | Nruab Nrab | Siab |
| 4340 | Siab | Nruab nrab |
Vim nwscov ntsiab lus ntawm nickel, 4340 yog kim tshaj plawsTxawm li cas los xij, nws qhov kev ua tau zoo hauv cov ntawv thov uas xav tau ntau zaus ua rau tus nqi tsim nyog.
8. Cov Qauv Thoob Ntiaj Teb thiab Cov Npe
| Qib Hlau | ASTM | SAE | EN/DIN | JIS |
|---|---|---|---|---|
| 4130 | A29/A519 | 4130 | 25CrMo4 | SCM430 |
| 4140 | A29/A322 | 4140 | 42CrMo4 | SCM440 |
| 4340 | A29/A322 | 4340 | 34CrNiMo6 | SNCM439 |
Xyuas kom tseeb tias koj tus neeg muag khoom hlau muab cov ntawv pov thawj kuaj xyuas lub Hoobkas uas ua raws li cov qauv cuam tshuam xws liASTM A29, EN 10250, los yogJIS G4053.
9. Yuav Ua Li Cas Xaiv Cov Hlau Uas Yog
| Qhov Yuav Tsum Tau Ua | Qib Pom Zoo |
|---|---|
| Qhov zoo tshaj plaws weldability | 4130 |
| Qhov sib npaug zoo tshaj plaws ntawm lub zog thiab tus nqi | 4140 |
| Qhov kawg ntawm lub zog thiab qaug zog | 4340 |
| Kev hnav tsis kam siab | 4340 los yog tawv 4140 |
| Aerospace los yog automotive | 4340 |
| Kev tsim kho dav dav | 4140 |
10. Xaus Lus
Hauv kev sib tw ntawmHlau Bar 4140 vs 4130 vs 4340, tsis muaj ib qho kev yeej uas haum rau txhua tus - qhov kev xaiv zoo nyob ntawm kojkev ua tau zoo, lub zog, tus nqi, thiab cov kev xav tau vuam.
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Xaiv4130yog tias koj xav tau weldability zoo heev thiab lub zog nruab nrab.
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Mus nrog4140rau qhov kev xaiv muaj zog, pheej yig uas haum rau cov shafts thiab iav.
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Xaiv4340thaum muaj kev kub ntxhov siab, kev qaug zog thiab kev poob siab yog qhov tseem ceeb heev.
Lub sijhawm tshaj tawm: Lub Xya Hli-24-2025