He rino kore waikura austenitic kei roto te 347, ko te 347H ia te putanga waro-teitei. Mō te hanganga,347ka kitea hei koranu i ahu mai i te tāpiri i te niobium ki te turanga o te maitai kore waikura 304. He huānga whenua onge te niobium e mahi ana rite tonu ki te titanium. Ina tāpirihia ki te koranu, ka taea e ia te whakapai ake i te hanganga o te witi, te ātete i te waikura intergranular, me te whakatairanga i te whakapakeketanga tawhito.
Ⅰ. E rite ana ki ngā paerewa ā-motu
| Haina | 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. TE HANGA MATUA O TE PAE RINO KOREWAI S34700
| Tau | C | Mn | Si | S | P | Fe | Ni | Cr |
| 347 | 0.08 mōrahi | 2.00mōrahi | 1.0 mōrahi | 0.030mōrahi | 0.045 mōrahi | 62.74 meneti | 9-12max | 17.00-19.00 |
| 347H | 0.04 – 0.10 | 2.0 mōrahi | 1.0 mōrahi | 0.030 mōrahi | 0.045 mōrahi | 63.72 meneti | 9-12max | 17.00 – 19.00 |
Ⅲ.347 347H Pae maitai kore waikura Ngā Āhuatanga Hangarau
| Kiato | Te Pūwāhi Rewa | Kaha Kume (MPa) min | Kaha Hua 0.2% Whakamātautau (MPa) min | Te roa (% i roto i te 50mm) min |
| 8.0 karamu/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 |
Ⅳ. Ngā āhuatanga rauemi
①He ātete pai ki te waikura, he rite ki te maitai kore waikura 304.
② I waenganui i te 427 ~ 816 ℃, ka taea e ia te aukati i te hanganga o te chromium carbide, te ātete ki te arotautanga, ā, he pai te ātete ki te waikura intergranular.
③He ātete ngokingoki tonu tōna i roto i te taiao waikura kaha me te pāmahana teitei o te 816℃.
④He ngāwari ki te toro me te hanga, he ngāwari hoki ki te whakarewa.
⑤He pakari pai ki te pāmahana iti.
Ngā wā tono Ⅴ
Ko te mahi pāmahana teitei o347 me 347HHe pai ake te maitai kore waikura i tērā o te 304 me te 321. He whānuitia te whakamahinga i roto i ngā ahumahi rererangi, matū hinu, kai, pepa me ētahi atu ahumahi, pērā i ngā paipa matua putanga hau me ngā paipa peka o ngā miihini rererangi, ngā paipa hau wera o ngā compressors turbine, me ngā kawenga iti me ngā pāmahana kāore e neke ake i te 850°C. Ngā wāhanga e mahi ana i raro i ngā āhuatanga, me ētahi atu.
Wā tuku: Mei-11-2024