SAE4340 Karfe Round Bar ASTM4340 Karfe Rod
Siffofin
The abu na 4340 karfe mashaya ne gami tsarin karfe.Daidai da Jamusanci DIN karfe sa 36CrNiMo4, Faransanci NF misali 40NCD3, Jafananci JIS misali SNCM439, British BS misali 816M40, American SAE/ASTM4340, American UNS misali G43400, China Standard 40CrNiMoA.
SAE4340 da aka sani da alloy tsarin karfe ko hada karfe.Karfe yana ƙunshe da nickel tsakanin 1.65 da 2.00, wanda ke da ƙarfi mai ƙarfi, ƙarfi, ƙarfin ƙarfi mai ƙarfi, da kwanciyar hankali a kan zafi mai zafi.Duk da haka, yana da babban hankali ga fararen spots da rashin ƙarfi.Rashin iya karantawa, yana buƙatar preheating mai zafin jiki kafin waldawa, rage damuwa bayan walda, da amfani bayan zafin jiki.
STANDARD: ASTM A29/A29M-2012 ko SAE J404
Ƙayyadaddun bayanai
| Carbon C | 0.38 ~ 0.43 |
| Silicon Sa | 0.15 ~ 0.35 |
| Manganese Mn | 0.60 ~ 0.80 |
| Sulfur S | ≤ 0.030 |
| Phosphorus P | ≤ 0.025 |
| Chromium Cr | 0.60 ~ 0.90 |
| Nickel | 1.65-2.00 |
| Copper Ku | ≤ 0.025 |
| Molybdenum Mo | 0.20-0.30 |
Kayan aikin injiniya
| Ƙarfin ƙarfi σ b (MPa) | ≥980 |
| Ƙarfin Haɓaka σ s (MPa) | ≥835 |
| Adadin haɓakawa δ 5 (%) | ≥12 |
| Rage yanki ψ (%) | ≥55 |
| Tasirin makamashi Akv (J) | ≥ 78 |
| Ƙimar taurin tasiri α kv (J/cm2) | ≥98 |
Bayanin maganin zafi
An kashe a 850 ℃, mai sanyaya;Zazzabi a 600 ℃, sanyaya ruwa, sanyaya mai.
Aikace-aikace
Yawanci ana amfani dashi don kera mahimman sassa tare da babban ƙarfi da filastik mai kyau, kuma don kera mahimman sassa tare da buƙatun aiki na musamman bayan jiyya nitrating:
-Kayan injuna masu nauyi mai nauyi
-Wheel shaft tare da diamita fiye da 250mm
-Rotor shaft na helikwafta
- Shaft ɗin injin turbojet, ruwan wukake, da manyan abubuwan watsa kayan aiki na injin turbojet
- Crankshaft fasteners, gears, da dai sauransu.
Kunshin
1.By bundles, kowane dam nauyi a karkashin 3 ton, ga kananan msanduna zagaye diamita, kowane dam tare da 4 - 8 karfe tube.
Ganga mai ƙafa 2.20 ya ƙunshi girma, tsawon ƙasa da 6000mm
Gangar ƙafar ƙafa 3.40 ta ƙunshi girma, tsayin da ke ƙarƙashin 12000mm
4.By jirgin ruwa mai girma, cajin kaya yana da ƙasa da kaya mai yawa, kuma babbaBa za a iya loda masu girma dabam a cikin kwantena ba za a iya jigilar kaya ta babban kaya
Kunshin
Tabbatar da inganci
1. Tsanani bisa ga buƙatun
2. Samfura: Samfura yana samuwa.
3. Gwaje-gwaje: Gwajin gwajin gishiri / Gwajin Tensile / Eddy halin yanzu / Gwajin abun da ke ciki bisa ga buƙatar abokan ciniki
4. Certificate: IATF16949, ISO9001, SGS da dai sauransu.
5. EN 10204 3.1 Takaddun shaida
