347 shine a cikin nono-dauke da bakin karfe bakin karfe, yayin da 347h shine babban carbon Carbon. Cikin sharuddan abun ciki,347Za a iya gani a matsayin wani alloy da aka samo daga ƙara niobum zuwa gindin ƙarfe na 304 bakin karfe. Niobium wani rashi ne mai wuya wanda ya shafi kwatankwacin titanium. Lokacin da aka ƙara a cikin alloy, zai iya tsaftataccen lalata hatsi, yana inganta shekarunsu na tsakaninsu, kuma inganta shekaru hardening.
Ⅰ -Cors amsa ga ka'idojin ƙasa
| China | GBit 20878-2007 | 06CR18NI11NB | 07cr18ni11nb (1Cr19ni11nb) |
| US | Astm A240-15a | S34700,347 | S34709,347h |
| JIS | J1s g 4304: 2005 | 2147 | - |
| In | Ha 10088-1-2005 | X6crnb18-10 1.4550 | X7crninb18-10 1.4912 |
Cikakken abun da ke cikin S34700 bakin karfe mashaya
| Sa | C | Mn | Si | S | P | Fe | Ni | Cr |
| 347 | 0.08 Max | 2.00max | 1.0 Max | 0.030MAX | 0.045 Max | 62.74 min | 9-12max | 17.00-19.00 |
| 347h | 0.04 - 0.10 | 2.0 Max | 1.0 Max | 0.030 Max | 0.045 Max | 63.72 min | 9-12max | 17.00 - 19.00 |
Ⅲ.347 347H Bakin Karfe Bar Kayan Kayan Karfe
| Yawa | Mallaka | Tenarfin tenarshe (MPA) min | Samar da ƙarfi 0.2% tabbatacce (MPA) min | Elongation (% a cikin 50mm) min |
| 8.0 g / cm3 | 1454 ° C (2650 ° F) | PSI - 75000, MPA - 515 | PSI - 30000, MPA - 205 | 40 |
Ka'idodin ⅳ
①excelent orexcelent corroussa jure kama da 304 Bakin karfe.
② Tsakanin 427 ~ 816 ℃, zai iya hana samuwar curomium carbide, tsayayya da hankali, kuma yana da kyakkyawan juriya ga lalata da ke cikin gida.
Har yanzu yana da juriya na Creep a cikin yanayin da aka yi amfani da shi mai ƙarfi tare da babban zafin jiki na 816 ℃.
④easy ya mika da tsari, mai sauƙin wald.
⑤good low zazzabi.
Ⅴ.Apting lokutan
Babban zafin jiki na347 & 347Hbakin karfe ya fi na 304 da 321. Ana amfani dashi sosai a cikin jirgin sama, bututun mai, abinci mai zafi na daskararre na turbine, kuma a cikin ƙananan last da kuma yanayin zafi ba wucewa 850 ° C. Sassan da suke aiki a ƙarƙashin yanayin, da sauransu.
Lokaci: Mayu-11-2024