Izakhiwo Jikelele
Ingxubevange 347 kuyinto uhlaliseke, austenitic, chromium steel equkethe columbium okuvumela zokuqeda Carbide kwezulu, futhi ngenxa yalokho, intergranualr ukugqwala. Ingxubevange 347 is Ukuzinziswa anezele of chromium futhi tantalum futhi linikeza ephakeme ungangena futhi ukucindezeleka ukudabuka izakhiwo kuka ingxubevange 304 futhi 304L okungase asetshenziselwe ukuvezwa lapho sensitization futhi ukugqwala intergranualr ezibaluleke. Ukwengeza columbium futhi likuvumela Ingxubevange 347 ukuba esihle ukugqwala ukumelana, ngisho kokwalabo ingxubevange 321. 347H iyona ephakeme carbon Ukwakheka uhlobo Ingxubevange 347 futhi ubonisa ngcono lokushisa eliphezulu ungangena izakhiwo.
Imininingwane: Uns S34700 / S34709
izicelo:
Ingxubevange 347 lisetshenziswa njalo ngenxa ukuzakhela imishini, okumele ibekwe enkonzweni ngaphansi kwezimo ezinzima ezonakalisayo, futhi kuvamile ukuba nezimboni petroleum yokucwenga. Izicelo egcizelela ngokungaguquguquki ukuthi wasebenzisa Ingxubevange 347 zihlanganisa:
1.High lokushisa chemical icubungula
2.Heat umzimba amashubhu
3.High inkonzo lokushisa umusi
4.High ingcindezi umusi amapayipi
5.Radiant superheaters
amashubhu 6.Boiler
7.Heavy komsebenzi qeda izinhlelo
8.General femu piping
Amazinga:
1.ASTM / ASME: Uns S34700 / S34709
2.EURONORM: FeMi35Cr20Cu4Mo2
3.DIN: 2,4660
4.Offers ukumelana efana jikelele, ukugqwala jikelele njengoba Ingxubevange 304
5.Used izinhlelo zokusebenza lapho Alloys ezifana Ingxubevange 304 basengozini intergranualr ukugqwala
6 .Ngokuvamile esetshenziselwa esindayo imishini ashiselwe esingenakubalwa annealed futhi imishini okusetshenziswa phakathi 800 kuya ku- (427 uKUZE 816 ° C) 150 ° F
7.Alloy 347 luncanyelwa phezu ingxubevange 321 ngoba aqueous nezinye ongaphakeme lokushisa ezindaweni
8.Primarily esetshenziswa e okusezingeni eliphezulu lokushisa ezindaweni lapho ukumelana sensitization kuyadingeka, esikhundleni salokho ekuvimbeleni ukugqwala intergranualr emazingeni aphansi
9.Susceptible ukugcizelela yokugqwala
10.Exhibits namachibi ukumelana efana zonke ezinye 18-8 austenitic lezinsimbi engagqwali
Corrosion Ukumelana:
Weldability
Lezinsimbi 1.Austenitic engagqwali ezibhekwa kube Weldable kakhulu kuzo zonke ingxubevange okusezingeni eliphezulu lezinsimbi
2.Can kufanele ashiselwe yibo bonke Fusion nokuzabalazela Welding izinqubo
3.Annealing lokushisa ububanzi-1800 kuya ku-2000 ° F
4.May kube impumuzo ukucindezeleka annealed ngaphakathi Carbide kwezulu uhla 800 1500 ° F ngaphandle ingozi ka okwalandela intergranualr ukugqwala
5.Cannot owenziwa lukhuni ngokukhohlisa ukwelashwa ukushisa
Heat Ukwelashwa
Chemical Properties:
|
C |
Kr |
mn |
Ni |
P |
S |
Si |
Cb / Ta |
347 |
0.08 max |
imiz: 17.0 |
2.0 max |
imiz: 9.0 |
0.04 max |
0.30 |
0.75 |
imiz: 10x C |
347H |
imiz: 0.04 |
imiz: 17.0 |
2.0 max |
imiz: 9.0 |
0.03 max |
0.30 |
0.75 |
imiz: 10x C |
Izakhiwo Mechanical:
Ibanga |
Eqine Amandla KSI (MPA) imiz |
Ukuhoxa Amandla 0.2% KSI offset KSI (MPA) imiz |
Ukunwebeka (% ngo 50mm) imiz |
Ukuqina (Brinell)-MAX |
Ukuqina (Rockwell B)-MAX |
347 / 347H |
75 |
30 |
40 |
201 |
95 |
Izakhiwo Physical:
Ubuningi |
Coefficient ka |
Thermal conductivity BTU / ihora-ft- ° F |
Specific Heat BTU / lb m - ° F |
Amamojuli okunwebeka (annealed) 2 -psi |
|
68 ° F | 68 - 212 ° F | 68 - 1832 ° F | 68-932 ° F | at 32 - 212 ° F | e ukungezwani (E) |
0,288 | 9.2 | 11.4 | 14.7 | 0.12 | 28 x 10 6 |