4340 / 34CrNiMo6 Dade a ɛyɛ den a ɛkorɔn
AGYINATUO: PROMISTEEL
NKYEKYƐMU: AISI 4340, 1.6582, 34CrNiMo6, SNCM439, EN24
NKYERƐKYERƐMU: Kurukuruwa Bar, Heavy Plate, Forged Block
TEBEA A WƆDE MA: Normalized, Annealed, Q + T
NHYEHYƐE: QT Tebea: 32-36 HRC (300-340 HB) .
FEATURE: Deep Hardenability, Nsunsuanso a ɛkorɔn a ɛyɛ den
AKWANKYERƐ: Wimhyɛn a Wɔde Si fam, Nneɛma a emu yɛ duru, Tumi a Wɔde Kɔ
MOQ: Ton 25 na ɛyɛ adwuma
AISI 4340 (34CrNiMo6) na ɛwɔ hɔ.yɛ dade a wɔde afrafra a ɛba fam-a ɛyɛ hyew a ɛyɛ papa a nickel, chromium, ne molybdenum wom. Wonim no sɛ ɛyɛ nea...kateeyɛ soronkone tumi a ɛbɛma ahoɔden a ɛkorɔn aba wɔ tebea a wɔde ɔhyew-sa no mu bere a ɛkura ɔbrɛ a ɛko tia yiye no mu.
Sɛ wɔde toto ho akosi 4140, a wɔde kaa ho noNickel (1.5% - 2.0%) yɛ nea ɛwɔ hɔ.ma 4340 a ɛkorɔn sen biaraDeep Hardenability a Ɛyɛ Den. This means it can achieve uniform hardness from the surface to the center, even in large cross-sections (e.g., shafts >150 mm a ne ntwemu). Ɛyɛ gyinapɛn ade ma afã horow a nhyɛso kɛse wɔ ahunmu, ngo & gas drilling, ne afiri a emu yɛ durury baabi a huammɔdi nyɛ ɔkwan a wobetumi afa so.
Product Specifications & Grade a ɛne no sɛ
Yɛde Cr-Ni{2}}Mo dade a ɛho tew a ɛkorɔn ma, na yɛhwɛ hu sɛ ɛwɔ isotropic sus ne ahofadi a wonya fi hydrogen a ɛyɛ mmerɛw ho.
Table-1
Wiase nyinaa gyinapɛn a ɛfa mfiridwuma mu dwumadie a emu yɛ duru-ho.
Amanaman Ntam Adesuakuw Comparison a wɔde di dwuma |
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| GB (China) . | ASTM / AISI (U.S.A.) . | DIN / EN (Germany) . | JIS (Japan) . | BS (UK) . |
| 40CrNiMoA na ɛwɔ hɔ | 4340 | 1.6582 (34CrNiMo6) na ɛwɔ hɔ. | SNCM439 na ɛwɔ hɔ | EN24 / 817M40 na ɛwɔ hɔ |
| 45CrNiMoVA na ɛyɛ adwuma | 4340 Mod | 1.6580 (30CrNiMo8) na ɛwɔ hɔ. | SNCM447 na ɛwɔ hɔ | - |
| - | 4337 | - | SNCM431 na ɛwɔ hɔ | - |
Table-2 na ɛwɔ hɔ
Nickel hwɛ hu sɛ ɛyɛ den; Molybdenum siw abufuw a ɛyɛ mmerɛw ano.
Nnuru a Wɔde Yɛ Nneɛma (MassNkyekyɛm %) . |
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| Aba | C | Cr | Ni | Mo | Mn |
| 4340 | 0.38~0.43 | 0.70~0.90 | 1.65~2.00 | 0.20~0.30 | 0.60~0.80 |
| 34CrNiMo6 (1.6582) na ɛwɔ hɔ. | 0.30~0.38 | 1.30~1.70 | 1.30~1.70 | 0.15~0.30 | 0.50~0.80 |
| SNCM439 na ɛwɔ hɔ | 0.36~0.41 | 0.60~1.00 | 1.60~2.00 | 0.15~0.30 | 0.60~0.90 |
Table-3
Nnua akɛse a wɔde atoro ayɛ wɔ hɔ ma nnwuma a emu yɛ duru.
Nneɛma a Wɔde Ma Range & Formats |
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| Product Form Krataa a Wɔde Yɛ Adwuma | Nsusuwii (mm) . | Tebea a Wɔde Kɔma | Surface Finish a Wɔde Awie |
| Kurukuruwa Bar | Dia: 20 - 800 Ɔde ne nsa kyerɛɛ ne so. | Hot Rolled / Wɔayɛ no atoro / QT |
Tuntum / Wɔatutu / Wɔadan |
| Flat Bar a Ɛyɛ Fɛ | 30 - 400 x 50 - 1000 | Wɔayɛ no atoro/Wɔayɛ |
Wɔde Mfiri na ɛyɛe (6-Sides) . |
| Prɛte | Ne kɛse: 20 - 300 | Ɔhyew a Wɔabɔ no / QT |
Tuntum / Tuo a Wɔabɔ no Tow |
| Block a Wɔayɛ no Foforo | Amanneɛbɔ a Wɔatwa | Forged / QT | Milled na ɛyɛ adwuma |
Nneɛma Titiriw a Ɛwɔ Hɔ and Mfaso a ɛwɔ so
- Deep Hardenability: Ɛyɛ a na ɛyɛ den sɛ:Esiane Nickel a ɛwɔ mu nti, wobetumi ayɛ 4340 den denam-ne-fa mu wɔ afã akɛse mpo mu, bere a ebia 4140 bɛyɛ den wɔ soro nkutoo wɔ nnua a ɛyɛ den mu.
- Nkɛntɛnso a Ɛkorɔn a Ɛyɛ Den:Ɛda ductility a ɛkyɛn so ne ahoɔden a ɛko tia shock loads adi, mpo wɔ sub-zero temperatures mu.
- Ahoɔden a Ɛkorɔn:Wobetumi de ɔhyew- ayɛ ho adwuma akɔ ahoɔden a ɛkorɔn a ɛyɛ nwonwa a ɛtwetwe (ɛkɔ 1500 MPa / 220 ksi) bere a ɛkura ductility a eye sen dade afoforo dodow no ara wɔ ahoɔden dodow yi mu.
- Ɔbrɛ a Wɔko tia:Ɛyɛ papa ma cyclically loaded afã horow te sɛ crankshafts ne landing gears.
- EN24 Nea ɛne no sɛ:Yɛn 34CrNiMo6 no ne nea agye din no hyiaEN24grade a wɔde di dwuma kɛse wɔ UK ne Commonwealth gua so.
Nnwuma a Wɔtaa De Di Dwuma
4340 / 34CrNiMo6 na wɔde di dwuma wɔ baabi a 4140 nyɛ den anaasɛ ɛnyɛ den sɛnea ɛsɛ:
Ahunmu Ahunmu
Wimhyɛn a wɔde si fam no afã horow, ne dan no afã horow, ne helikopta no rotor shafts.
Kar Mmirikatu
High-adwumayɛ krankshafts, nkitahodi abaa, ne transmission aksel.
Mfiri a Ɛyɛ Den
Nneɛma atitiriw a wɔde yɛ mframa afiri, abotan a wɔde twitwa, ne mfiri a wɔde twitwiw nneɛma.
Ngo & Mframa a Wɔde Yɛ Nneɛma
Nnwinnade a wɔde tu tokuru, drill collars, ne high-pressure valves.
Nkuku Ho Nnwuma
Wɔde di dwuma sɛ nkuku kura blocks ma plastic nkuku akɛse a ɛhwehwɛ ahoɔden a ɛkorɔn a wɔde hyɛ mu.
FAQ
Q1: Nsonsonoe titiriw bɛn na ɛda 4140 ne 4340 dade ntam?
A1: Nickel. 4340 contains ~1.8% nickel, while 4140 contains none. This nickel gives 4340 much higher toughness and allows it to harden deeper in thick sections. If your part is thick (>100 mm) na ehia core ahoɔden a ɛkorɔn, paw 4340.
Q2: So 34CrNiMo6 ne 4340 yɛ pɛ?
A2: Wɔn di nsɛ paa nanso wɔnyɛ pɛ. 34CrNiMo6 (1.6582) yɛ Europa (DIN) gyinapɛn, a ɛtaa wɔ carbon a ɛba fam kakra nanso chromium dɔɔso sen AISI 4340. Nanso, wɔ dwumadie a emu yɛ duru-adwuma dodoɔ no ara mu no, wɔbu wɔn sɛ ɛyɛ dwumadie a ɛyɛ pɛ a wɔsesa.
Q3: So ɛyɛ den sɛ wɔde mfiri bɛyɛ dade 4340?
A3: Egyina tebea no so. Wɔ annealed tebea mu no, ɛyɛ mfiri yiye wɔ ntease mu. Wɔ hardened (QT) tebea mu (sɛ nhwɛso no, 30-35 HRC) no, mfiri a wɔde yɛ adwuma no yɛ den kɛse na ɛhwehwɛ sɛ wɔde nnwinnade a ɛyɛ den di dwuma, nanso ɛma wonya ɔfasu no yiye.
Q4: So metumi ayɛ weld 4340 dade?
A4: Welding yɛ den. Esiane sɛ ɛwɔ alloy pii nti, 4340 wɔ asiane kɛse paa sɛ ɛbɛpaapae bere a wɔreyɛ welding no. Ɛhwehwɛ sɛ ɔhyew a ɛkorɔn a wɔde di kan yɛ (200-300℃) ne onwini a wɔahyɛ so wɔ weld akyi. Wɔbara welding wɔ tebea a ɛyɛ den no mu denneennen.
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