347 waa bir aan miridh lahayn oo ay ku jirto niobium, halka 347H ay tahay nooceeda kaarboon sare leh. Marka la eego halabuurka,347waxaa loo arki karaa sidii daawaha laga soo qaatay ku darista niobium saldhigga birta aan miridhku lahayn ee 304. Niobium waa curiye dhul naadir ah oo u shaqeeya si la mid ah titanium. Marka lagu daro daawaha, waxay sifeeyn kartaa qaab-dhismeedka hadhuudhka, waxay iska caabin kartaa daxalka isku-dhafka ah, waxayna kor u qaadi kartaa adkaanta da'da.
Ⅰ.U dhiganta heerarka qaranka
| Shiinaha | GBIT 20878-2007 | 06Cr18Ni11Nb | 07Cr18Ni11Nb(1Cr19Ni11Nb) |
| US | ASTM A240-15a | S34700，347 | S34709，347H |
| JIS | J1S G 4304:2005 | SUS 347 | - |
| DIN | EN 10088-1-2005 | X6CrNiNb18-10 1.4550 | X7CrNiNb18-10 1.4912 |
Ⅱ.KABKA KIIMIKADA EE S34700 birta aan miridhku lahayn
| Fasal | C | Mn | Si | S | P | Fe | Ni | Cr |
| 347 | 0.08 ugu badnaan | 2.00 ugu badnaan | 1.0 ugu badnaan | 0.030 ugu badnaan | 0.045 ugu badnaan | 62.74 daqiiqo | 9-12 ugu badnaan | 17.00-19.00 |
| 347H | 0.04 – 0.10 | 2.0 ugu badnaan | 1.0 ugu badnaan | 0.030 ugu badnaan | 0.045 ugu badnaan | 63.72 daqiiqo | 9-12 ugu badnaan | 17.00 – 19.00 |
Ⅲ.347 347H Bir aan miridh lahayn oo bir ah oo leh sifooyinka farsamada
| Cufnaanta | Barta Dhalmada | Xoogga Garaacista (MPa) ugu yaraan | Xoog Wax-soo-saar 0.2% Caddayn (MPa) ugu yaraan | Kordhinta (% 50mm) ugu yaraan |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi - 75000 , MPa - 515 | Psi - 30000 , MPa - 205 | 40 |
Sifooyinka walxaha
①Isku-darka daxalka oo aad u fiican oo la barbar dhigi karo birta aan lahayn 304.
② Inta u dhaxaysa 427 ~ 816℃, waxay joojin kartaa sameynta carbide-ka chromium, waxay iska caabin kartaa dareenka, waxayna leedahay iska caabin wanaagsan oo ku wajahan daxalka intergranular.
③ Wali waxay leedahay iska caabin gaar ah oo ku jirta jawi oksaydh oo xooggan oo leh heerkul sare oo ah 816℃.
④Si fudud ayaa loo fidin karaa loona qaabeyn karaa, si fudud ayaa loo alxan karaa.
⑤ Adkayn heerkul hoose oo wanaagsan.
Ⅴ. Munaasabadaha codsiga
Waxqabadka heerkulka sare ee347&347HBirta aan miridhku lahayn ayaa ka fiican tan 304 iyo 321. Waxaa si weyn loogu isticmaalaa duulista hawada, kiimikada batroolka, cuntada, warqadda iyo warshadaha kale, sida tuubooyinka waaweyn ee qiiqa iyo tuubooyinka laamaha ee matoorada diyaaradaha, tuubooyinka gaaska kulul ee kombaresarada marawaxadaha, iyo culaysyo yaryar iyo heerkul aan ka badnayn 850°C. Qaybaha ka shaqeeya xaaladaha, iwm.
Waqtiga boostada: Maajo-11-2024