Nigbati o ba de yiyan ọpa irin alloy ti o tọ fun ẹrọ, aerospace, tabi awọn ohun elo ile-iṣẹ, awọn orukọ mẹta nigbagbogbo wa si iwaju -4140, 4130, ati4340. Awọn irin kekere alloy chromium-molybdenum jẹ olokiki fun agbara wọn, lile, ati ẹrọ. Ṣugbọn bawo ni o ṣe mọ eyi ti o yẹ fun iṣẹ akanṣe rẹ?
Ninu itọsọna okeerẹ yii, a ṣe afiwe4140 vs 4130 vs 4340 irin ifikọja awọn metiriki bọtini gẹgẹbi akopọ kemikali, awọn ohun-ini ẹrọ, líle, weldability, itọju ooru, ati ibamu ohun elo - iranlọwọ awọn onimọ-ẹrọ, awọn aṣelọpọ, ati awọn olura ṣe awọn ipinnu ohun elo alaye.
1. Ifihan si 4140, 4130, ati 4340 Irin Ifi.
1.1 Kini Awọn Irin Aloy-Kekere?
Awọn irin alloy kekere jẹ awọn irin erogba ti o pẹlu awọn iwọn kekere ti awọn eroja alloying bi chromium (Cr), molybdenum (Mo), ati nickel (Ni) lati mu awọn ohun-ini kan pato dara si.
1.2 Akopọ ti Kọọkan ite
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4140 Irin: Irin ti o wapọ ti nfunni ni agbara ti o dara julọ ati lile, ti a lo ni lilo pupọ ni ṣiṣe ọpa, awọn ẹya ara ẹrọ, ati imọ-ẹrọ gbogbogbo.
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4130 Irin: Mọ fun awọn oniwe-ga toughness ati weldability, igba ti a lo ninu bad ati motorsports.
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4340 Irin: Nickel-chromium-molybdenum alloy pẹlu ultra-ga agbara ati rirẹ resistance, ìwòyí fun Aerospace ati eru-ojuse ohun elo.
2. Kemikali Tiwqn lafiwe
| Eroja | 4130 (%) | 4140 (%) | 4340 (%) |
|---|---|---|---|
| Erogba (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 (Kr) | 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 |
| Silikoni (Si) | 0.15 – 0.35 | 0.15 – 0.30 | 0.15 – 0.30 |
Awọn akọsilẹ bọtini:
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4340ti fi kunnickel, fifun ni ti o ga toughness ati rirẹ resistance.
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4130ni kekere erogba akoonu, imudarasiweldability.
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4140ni o ni ga erogba ati manganese, boostinglíle ati agbara.
3. Mechanical Properties lafiwe
| Ohun ini | 4130 Irin | 4140 Irin | 4340 Irin |
|---|---|---|---|
| Agbara Fifẹ (MPa) | 670 – 850 | 850 – 1000 | 930 – 1080 |
| Agbara ikore (MPa) | 460 – 560 | 655 – 785 | 745 – 860 |
| Ilọsiwaju (%) | 20 – 25 | 20 – 25 | 16 – 20 |
| Lile (HRC) | 18 – 25 | 28 – 32 | 28 – 45 |
| Ipa lile (J) | Ga | Déde | Giga pupọ |
4. Ooru Itoju ati Hardenability
4130
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Deede: 870-900°C
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Lile: Epo pa lati 870 ° C
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Ìbínú: 480-650°C
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Ti o dara ju fun: Awọn ohun elo ti o niloweldabilityatilile
4140
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Lile: Opo epo lati 840-875 ° C
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Ìbínú: 540-680°C
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LileO tayọ - jinle irú ìşọn achievable
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Ti o dara ju fun: Awọn ọpa ti o ni agbara ti o ga julọ, awọn jia, crankshafts
4340
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Lile: Epo tabi polima quench lati 830-870 °C
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Ìbínú: 400-600°C
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Ohun akiyesi: Ṣe idaduro agbara paapaa lẹhin lile lile
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Ti o dara ju fun: Ọkọ ofurufu ibalẹ jia, eru-ojuse wakọ irinše
5. Weldability ati Machinability
| Ohun ini | 4130 | 4140 | 4340 |
|---|---|---|---|
| Weldability | O tayọ | Fair to Rere | Òótọ́ |
| Ṣiṣe ẹrọ | O dara | O dara | Déde |
| Preheating | Iṣeduro fun awọn apakan nipọn (> 12mm) | ||
| Post-Weld Heat Itoju | Ti ṣe iṣeduro fun 4140 ati 4340 lati dinku aapọn ati fifọ |
4130duro jade fun irọrun weldable ni lilo TIG/MIG laisi sisan ti o pọ ju, apẹrẹ fun awọn ẹya tubing bi awọn ẹyẹ yipo tabi awọn fireemu ọkọ ofurufu.
6. Awọn ohun elo nipasẹ Industry
6.1 4130 Irin Awọn ohun elo
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Ofurufu ọpọn
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-Ije awọn fireemu ati eerun cages
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Awọn fireemu alupupu
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Awọn olugba ohun ija
6.2 4140 Irin Awọn ohun elo
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Awọn dimu irinṣẹ
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Crankshafts
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Awọn jia
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Axles ati awọn ọpa
6.3 4340 Irin Awọn ohun elo
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Ofurufu ibalẹ jia
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Ga-agbara boluti ati fasteners
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Eru ẹrọ irinše
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Awọn ọpa ile-iṣẹ epo ati gaasi
7. Iye owo ero
| Ipele | Owo ibatan | Wiwa |
|---|---|---|
| 4130 | Kekere | Ga |
| 4140 | Alabọde | Ga |
| 4340 | Ga | Déde |
Nitori rẹnickel akoonu, 4340 jẹ gbowolori julọ. Sibẹsibẹ, iṣẹ ṣiṣe rẹ ni awọn ohun elo ti n beere nigbagbogbo ṣe idalare idiyele naa.
8. International Standards ati Designations
| Irin ite | ASTM | SAE | EN/DIN | JIS |
|---|---|---|---|---|
| 4130 | A29/A519 | 4130 | 25CrMo4 | SCM430 |
| 4140 | A29/A322 | 4140 | 42CrMo4 | SCM440 |
| 4340 | A29/A322 | 4340 | 34CrNiMo6 | SNCM439 |
Rii daju pe olupese irin rẹ n pese awọn iwe-ẹri idanwo ọlọ ti o ni ibamu pẹlu awọn iṣedede ti o yẹASTM A29, EN 10250, tabiJIS G4053.
9. Bii o ṣe le yan Pẹpẹ Irin Ọtun
| Ibeere | Niyanju ite |
|---|---|
| Ti o dara ju weldability | 4130 |
| Iwọntunwọnsi ti o dara julọ ti agbara ati idiyele | 4140 |
| Gbẹhin toughness ati rirẹ agbara | 4340 |
| Idaabobo yiya to gaju | 4340 tabi lile 4140 |
| Aerospace tabi ọkọ ayọkẹlẹ | 4340 |
| Imọ-ẹrọ gbogbogbo | 4140 |
10. Ipari
Ninu idije tiIrin Pẹpẹ 4140 vs 4130 vs 4340, ko si ọkan-iwọn-jije-gbogbo Winner — awọn ọtun wun da lori rẹišẹ, agbara, iye owo, ati alurinmorin awọn ibeere.
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Yan4130ti o ba nilo o tayọ weldability ati dede agbara.
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Lọ pẹlu4140fun agbara-giga, aṣayan ti o ni iye owo ti o dara fun awọn ọpa ati awọn jia.
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Yan4340nigbati awọn lile lile, agbara rirẹ, ati mọnamọna resistance jẹ pataki.
Akoko ifiweranṣẹ: Jul-24-2025