SAE4340 Steel Round Bar ASTM4340 Molamu oa tšepe
Likaroloana
Thepa ea tšepe ea 4340 ke tšepe ea sebopeho sa alloy.E lekana le Jeremane DIN tšepe grade 36CrNiMo4 , French NF standard 40NCD3, Japanese JIS standard SNCM439, British BS standard 816M40, American SAE/ASTM4340, American UNS standard G43400，China Standard 40CrNiMoA.
SAE4340 e tsejoa e le tšepe ea sebopeho sa alloy kapa tšepe e kopaneng.Tšepe e na le nickel pakeng tsa 1.65 le 2.00, e nang le matla a phahameng, ho tiea, bokhoni bo thata bo phahameng, le botsitso khahlanong le ho chesa haholo.Leha ho le joalo, e na le kutlo e phahameng ho matheba a masoeu le brittleness ea khalefo.Ho se balehe hantle, ho hloka mocheso o phahameng oa mocheso pele ho tjheseletsa, ho imolla khatello ea maikutlo ka mor'a ho cheselletsa, le tšebeliso ka mor'a ho futhumatsa.
MAEMO: ASTM A29/A29M-2012 kapa SAE J404
Tlhaloso
| Carbon C | 0.38~0,43 |
| Silicon Si | 0.15~0,35 |
| Manganese Mn | 0.60~0,80 |
| Sebabole S | ≤ 0.030 |
| Phosphorus P | ≤ 0.025 |
| Chromium Cr | 0.60~0,90 |
| Nickel | 1.65-2.00 |
| Koporo Cu | ≤ 0.025 |
| Molybdenum Mo | 0.20-0.30 |
Thepa ea mechine
| Matla a thata σ b (MPa) | ≥980 |
| Matla a tlhahiso σ s (MPa) | ≥835 |
| Sekhahla sa bolelele δ 5 (%) | ≥12 |
| Phokotso ea sebaka ψ (%) | ≥55 |
| Matla a amang Akv (J) | ≥78 |
| Boleng ba tšusumetso α kv (J/cm2) | ≥98 |
Litlhaloso tsa phekolo ea mocheso
E tima ka 850 ℃, oli e pholile;Mocheso ho 600 ℃, metsi a pholile, oli a pholile.
Kopo
E atisa ho sebelisoa bakeng sa ho etsa likarolo tsa bohlokoa tse nang le matla a phahameng le polasetiki e ntle, le bakeng sa ho etsa likarolo tsa bohlokoa tse nang le litlhoko tse khethehileng tsa ts'ebetso ka mor'a phekolo ea nitrate:
-Mechini e boima e nang le meroalo e phahameng
- Shaft ea mabili e nang le bophara bo fetang 250mm
- The rotor shaft ea helikopthara
- The turbine shaft, blades, le likarolo tse phahameng tsa phetisetso ea enjene ea turbojet
- Li-fasteners tsa Crankshaft, likere, joalo-joalo.
Sephutheloana
1.Ka mekotla, boima bo bong le bo bong bo ka tlase ho lithane tse 3, bakeng sa kantle ho tse nyanebophara ba bar e chitja, sephutheloana se seng le se seng se nang le likhoele tsa tšepe tse 4 - 8.
Setshelo sa maoto a 2.20 se na le boholo, bolelele bo ka tlase ho 6000mm
Setshelo sa maoto a 3.40 se na le boholo, bolelele bo ka tlase ho 12000mm
4.Ka sekepe se seholo, Tefiso ea thepa e tlase ka thepa e ngata, ebile e kholosaese e boima e ke ke ea laeloa ka har'a linkho tse tsamaisoang ka thepa e ngata
Sephutheloana
Netefaletso ea boleng
1. E thata ho ea ka Litlhoko
2. Mohlala: Mohlala oa fumaneha.
3. Liteko: Teko ea ho fafatsa letsoai / Teko ea Tensile / Eddy hajoale / Teko ea sebopeho sa lik'hemik'hale ho latela kopo ea bareki
4. Setifikeiti: IATF16949, ISO9001, SGS joalo-joalo.
5. EN 10204 3.1 Setifikeiti
