Ha ho tluoa tabeng ea ho khetha mohala o nepahetseng oa tšepe bakeng sa lisebelisoa tsa mochini, sefofane, kapa indasteri, hangata mabitso a mararo a tla pele -4140, 4130, le4340. Litšepe tsena tse tlaase tsa alloy chromium-molybdenum li tsebahala ka matla a tsona, ho tiea le ho sebetsa ka thata. Empa u tseba joang hore na ke efe e loketseng morero oa hau?
Tataisong ena e akaretsang, re bapisa4140 vs 4130 vs 4340 mekoallo ea tšepeho pholletsa le metrics ea bohlokoa joalo ka sebopeho sa lik'hemik'hale, thepa ea mochini, ho thatafala, ho cheseha, kalafo ea mocheso, le ho tšoaneleha ha ts'ebeliso - lienjiniere tse thusang, baetsi ba thepa le bareki ho etsa liqeto tse nepahetseng.
1. Kenyelletso ho 4140, 4130, le 4340 Steel Bars
1.1 Litšepe tsa Low-Alloy ke Eng?
Litšepe tse nang le alloy tse tlase ke litšepe tsa k'habone tse kenyelletsang likarolo tse nyane tsa alloying joalo ka chromium (Cr), molybdenum (Mo), le nickel (Ni) ho ntlafatsa thepa e itseng.
1.2 Kakaretso ea Kereiti ka 'ngoe
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4140 tšepe: Tšepe e feto-fetohang e fanang ka matla le ho thatafala ho fetisisang, e sebelisoang haholo ho etsa lisebelisoa, likarolo tsa likoloi, le boenjiniere bo akaretsang.
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4130 tšepe: E tsebahala ka ho toughness phahameng le weldability, hangata sebelisoa ka sefofane le motorsports.
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4340 tšepe: Alloy ea nickel-chromium-molybdenum e nang le matla a holimo-limo le ho hanyetsa mokhathala, e ratoang bakeng sa lisebelisoa tsa sefofane le lisebelisoa tse boima.
2. Papiso ea Sebopeho sa Lik'hemik'hale
| Element | 4130 (%) | 4140 (%) | 4340 (%) |
|---|---|---|---|
| Khabone (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 |
Lintlha tsa Bohlokoa:
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4340e ekelitsenikele, ho e fa boima bo phahameng le ho hanyetsa mokhathala.
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4130e na le khabone e tlase, e ntlafatsaweldability.
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4140e na le khabone e phahameng le manganese, e matlafatsangboima le matla.
3. Mechanical Properties Papiso
| Thepa | 4130 tšepe | 4140 tšepe | 4340 tšepe |
|---|---|---|---|
| Tensile Strength (MPa) | 670 - 850 | 850 - 1000 | 930 - 1080 |
| Yield Strength (MPa) | 460 - 560 | 655 - 785 | 745 - 860 |
| Elongation (%) | Lilemo tse 20-25 | Lilemo tse 20-25 | 16-20 |
| Ho thatafala (HRC) | 18-25 | 28-32 | 28-45 |
| Matla a Tšusumetso (J) | Phahameng | E itekanetseng | Holimo Haholo |
4. Kalafo ea Mocheso le Ho thatafala
4130
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Ho tloaelehamocheso: 870–900°C
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Ho thatafatsa: Ho tima oli ho tloha ho 870°C
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Ho halefisamocheso: 480–650°C
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Molemo ka ho fetisisa bakeng sa: Likopo tse hlokangweldabilityleboimana
4140
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Ho thatafatsa: Ho tima oli ho tloha ho 840–875°C
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Ho halefisamocheso: 540–680°C
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Ho thatafala: E ntle haholo - ho thatafatsa nyeoe e tebileng ho ka finyelloang
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Molemo ka ho fetisisa bakeng sa: Li-shafts tse matla haholo, likere, li-crankshafts
4340
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Ho thatafatsa: Ho tima oli kapa polymer ho tloha ho 830-870 ° C
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Ho halefisamocheso: 400-600°C
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E hlokomelehang: E boloka matla le ka mor'a ho thatafala ho tebileng
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Molemo ka ho fetisisa bakeng sa: Lisebelisoa tsa ho lisa lifofane, likarolo tsa ho khanna tse boima
5. Weldability le Machinability
| Thepa | 4130 | 4140 | 4340 |
|---|---|---|---|
| Weldability | E kgabane | Fair to Good | E lokileng |
| Boikemisetso | E ntle | E ntle | E itekanetseng |
| Ho futhumatsa | E khothaletsoa bakeng sa likarolo tse teteaneng (> 12mm) | ||
| Kalafo ea Mocheso oa Post-Weld | E khothalelitsoe 4140 le 4340 ho fokotsa khatello ea maikutlo le ho peperana |
4130e hlahella ka ho cheseha ha bonolo ka TIG/MIG ntle le ho peperana ho feteletseng, e loketseng meaho ea li-tubing joalo ka lihoete tsa roll kapa liforeimi tsa sefofane.
6. Likopo ka Indasteri
6.1 4130 Lisebelisoa tsa tšepe
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Aerospace tubing
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Liforeimi tsa mabelo le li-roll cages
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Liforeimi tsa lithuthuthu
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Ba amohelang lithunya
6.2 4140 Lisebelisoa tsa tšepe
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Lisebelisoa tsa lisebelisoa
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Li-crankshafts
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Li-gears
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Li-axles le shafts
6.3 4340 Lisebelisoa tsa tšepe
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Lisebelisoa tsa lifofane
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Li-bolts le li-fasteners tse matla haholo
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Likarolo tse boima tsa mochini
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Lifate tsa indasteri ea oli le khase
7. Litšenyehelo
| Kereiti | Litšenyehelo tse Batlang | Ho fumaneha |
|---|---|---|
| 4130 | Tlase | Phahameng |
| 4140 | Mahareng | Phahameng |
| 4340 | Phahameng | E itekanetseng |
Ka lebaka la eonadikahare tsa nickel, 4340 ke eona e theko e boima ka ho fetisisa. Leha ho le joalo, ts'ebetso ea eona lits'ebetsong tse batlang hangata e lokafatsa litšenyehelo.
8. Maemo a Machaba le Likhetho
| Kereiti ea tšepe | ASTM | SAE | EN/DIN | JIS |
|---|---|---|---|---|
| 4130 | A29/A519 | 4130 | 25CrMo4 | SCM430 |
| 4140 | A29/A322 | 4140 | 42CrMo4 | SCM440 |
| 4340 | A29/A322 | 4340 | 34CrNiMo6 | SNCM439 |
Netefatsa hore morekisi oa hau oa tšepe o fana ka litifikeiti tsa tlhahlobo ea leloala tse lumellanang le maemo a nepahetseng joalo kaASTM A29, EN 10250, kapaJIS G4053.
9. Joang ho Khetha Right Steel Bar
| Tlhokahalo | Kereiti e khothalelitsoeng |
|---|---|
| Molemo ka ho fetisisa weldability | 4130 |
| Molemo ka ho fetisisa tekanyo ea matla le litšenyehelo | 4140 |
| Matla a ho qetela le matla a mokhathala | 4340 |
| Khanyetso e phahameng ea ho apara | 4340 kapa e thatafalitsoeng 4140 |
| Sefofane kapa koloi | 4340 |
| Boenjiniere bo akaretsang | 4140 |
10. Qetello
Tlholisanong eaSteel Bar 4140 vs 4130 vs 4340, ha ho motho ea hlolang ka boholo bo lekanang - khetho e nepahetseng e ipapisitse le uenatshebetso, matla, litšenyehelo, le litlhoko tsa tjheseletsa.
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Khetha4130haeba o hloka weldability e babatsehang le matla a itekanetseng.
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Tsamaea le4140bakeng sa khetho e matla, e theko e tlaase e loketseng li-shafts le likere.
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Khetha4340ha boima bo feteletseng, matla a mokhathala, le ho hanyetsa ho ts'oha ho le bohlokoa.
Nako ea poso: Jul-24-2025