I-347 iyinsimbi engagqwali equkethe i-niobium, kuyilapho i-347H iyinguqulo yayo yekhabhoni ephezulu. Mayelana nokuqanjwa,347ingabonakala njengengxubevange etholakala ekungezeni i-niobium esisekelweni sensimbi engagqwali engu-304. I-Niobium iyisici somhlaba esingavamile esisebenza ngokufanayo ne-titanium. Uma ingezwe ku-alloy, ingakwazi ukulungisa ukwakheka kokusanhlamvu, imelane nokugqwala kwe-intergranular, futhi ikhuthaze ukuqina kweminyaka.
Ⅰ.Ngokuhambisana namazinga kazwelonke
| China | I-GBIT 20878-2007 | Idatha ye-06Cr18Ni11Nb | 07Cr18Ni11Nb(1Cr19Ni11Nb) |
| US | I-ASTM A240-15a | S34700,347 | S34709,347H |
| I-JIS | J1S G 4304:2005 | I-SUS 347 | - |
| I-DIN | I-EN 10088-1-2005 | I-X6CrNiNb18-10 1.4550 | I-X7CrNiNb18-10 1.4912 |
Ⅱ.UKWAKHIWA KWEKHEMICAL YE-S34700 Ibha yensimbi engagqwali
| Ibanga | C | Mn | Si | S | P | Fe | Ni | Cr |
| 347 | 0.08 ubuningi | 2.00 ubuningi | 1.0 ubuningi | 0.030 ubuningi | 0.045 ubuningi | 62.74 imiz | 9-12 ubuningi | 17.00-19.00 |
| 347H | 0.04 - 0.10 | 2.0 ubuningi | 1.0 ubuningi | 0.030 ubuningi | 0.045 ubuningi | 63.72 imiz | 9-12 ubuningi | 17.00 - 19.00 |
Ⅲ.347 347H Ibha yensimbi engagqwali Izakhiwo zikamshini
| Ukuminyana | I-Melting Point | Amandla E-Tensile (MPa) min | Amandla Esivuno 0.2% Ubufakazi (MPa) min | Ubude (% ku-50mm) min |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 |
Ⅳ.Izinto ezibonakalayo
①Ukumelana nokugqwala okuhle kakhulu uma kuqhathaniswa nensimbi engagqwali engu-304.
② Phakathi kuka-427 ~ 816℃, ingavimbela ukwakheka kwe-chromium carbide, imelane nokuzwela, futhi inokumelana kahle nokugqwala kwe-intergranular.
③Isenokumelana okuthile kokukhasa endaweni eqinile ene-oxidizing enezinga lokushisa eliphakeme elingu-816℃.
④Kulula ukunweba nokwenza, kulula ukushisela.
⑤Ukuqina okuhle kwezinga lokushisa eliphansi.
Ⅴ.Izikhathi zokufaka isicelo
Ukusebenza kwezinga lokushisa eliphezulu kwe347&347Hinsimbi engagqwali ingcono kunaleyo ye-304 kanye ne-321. Isetshenziswa kabanzi kwezokundiza, i-petrochemical, ukudla, iphepha nezinye izimboni, njengamapayipi amakhulu okukhipha amandla kanye namapayipi egatsha ezinjini zezindiza, amapayipi egesi ashisayo e-compressor ye-turbine, kanye nemithwalo emincane. kanye namazinga okushisa angeqi ku-850°C. Izingxenye ezisebenza ngaphansi kwemibandela, njll.
Isikhathi sokuthumela: May-11-2024