SAE4340 uamea lapotopoto pa ASTM4340 uamea uamea
Vaega
O meafaitino o le 4340 pa uamea o le uamea faʻapipiʻi.E tutusa ma Siamani DIN uamea vasega 36CrNiMo4, Farani NF tulaga 40NCD3, Iapani JIS tulaga SNCM439, tulaga British BS 816M40, American SAE/ASTM4340, American UNS tulaga G43400, Saina Standard 40CrNiMoA.
SAE4340 ua lauiloa o le uamea fausaga faʻapipiʻi poʻo le uamea tuʻufaʻatasia.O le uamea o loʻo i ai le nickel i le va o le 1.65 ma le 2.00, lea e maualuga le malosi, faigata, maualuga le faʻamalosi malosi, ma le mautu i le vevela.Ae ui i lea, e maualuga lona lagona ile pa'epa'e ma le ita brittleness.Le lelei le faitau, e manaʻomia le faʻavevelaina o le vevela maualuga aʻo leʻi faʻapipiʻiina, faʻafefe faʻamaʻi pe a uma le uelo, ma faʻaoga pe a uma le faʻafefe.
TULAFONO: ASTM A29/A29M-2012 poʻo SAE J404
Fa'amatalaga
| Carbon C | 0.38~0.43 |
| Silisi Si | 0.15~0.35 |
| Manganese Mn | 0.60~0.80 |
| Sulfur S | ≤ 0.030 |
| Phosphorus P | ≤ 0.025 |
| Chromium Cr | 0.60~0.90 |
| Nikeli | 1.65-2.00 |
| Kopa Ku | ≤ 0.025 |
| Molybdenum Mo | 0.20-0.30 |
Mea tau masini
| Malosi fa'amalosi σ b (MPa) | ≥980 |
| Malosi e maua σ s (MPa) | ≥835 |
| Fuafuaga fa'aumi δ 5 (%) | ≥12 |
| Fa'aitiitiga o le eria ψ (%) | ≥55 |
| Malosiaga a'afiaga Akv (J) | ≥ 78 |
| A'afiaga faigata tau α kv (J/cm2) | ≥98 |
Fa'amatalaga o le vevela
Tinei i le 850 ℃, suau'u malulu;Ita ile 600 ℃, fa'amalie le vai, fa'amalulu le suau'u.
Fa'atatauga
E masani ona faʻaaogaina mo le gaosiga o vaega taua ma le malosi maualuga ma le palasitika lelei, ma mo le gaosiga o vaega taua ma manaʻoga faʻapitoa pe a maeʻa togafitiga faʻamaʻi:
-Masini mamafa faʻatasi ai ma faʻamau maualuga
-Uli uili ma le lautele sili atu i le 250mm
-O le rotor shaft o se helikopa
-O le turbine shaft, lau, ma vaega faʻasalalau maualuga o le afi turbojet
- Fa'amau fa'amau, mea fa'aoga, ma isi.
afifi
1.By fusi, taitasi fusi mamafa i lalo o 3 tone, mo fafo laitipa lapotopoto le lautele, fusi ta'itasi ma fasi uamea e 4 - 8.
2.20 futu atigipusa o loʻo i ai fua, umi i lalo ole 6000mm
3.40 futu pusa o loʻo i ai fua, umi i lalo ole 12000mm
4.By vaʻa tele, E maualalo le tau o uta i uta tetele, ma telelapopoa mamafa e le mafai ona utaina i totonu o koneteina e mafai ona felauaiga i uta tetele
afifi
Fa'amautinoaga lelei
1. Fa'amaoni e tusa ai ma Manaoga
2. Faʻataʻitaʻiga: Faʻataʻitaʻiga o loʻo avanoa.
3. Su'ega: Su'ega su'ega masima / Su'ega Tensile / Eddy current / Su'ega vaila'au e tusa ai ma talosaga a tagata fa'atau
4. Tusi Faamaonia: IATF16949, ISO9001, SGS ma isi.
5. EN 10204 3.1 Fa'amaonia
