Ingxubevange 347H iyinsimbi ezinzile, i-austenitic, i-chromium equkethe i-columbium evumela ukuqedwa kwemvula ye-carbide, futhi, ngenxa yalokho, ukugqwala kwe-intergranualr.I-alloy 347 iqiniswa izengezo ze-chromium ne-tantalum futhi inikezela ngezakhiwo ezikhuphukayo nezikhuphuka ingcindezi kune-alloy 304 kanye ne-304L engase isetshenziselwe ukuchayeka lapho ukuzwela nokugqwala kwe-intergranualr kukhathaza.Ukwengezwa kwe-columbium futhi kuvumela i-Alloy 347 ukuthi ibe nokuvikeleka okuhle kakhulu kokugqwala, ngisho nangaphezu kwalokho kwe-alloy 321. I-347H iwuhlobo oluphezulu lwekhabhoni lokwakheka kwe-Alloy 347 futhi ibonisa izinga lokushisa eliphezulu elithuthukisiwe kanye nezakhiwo ezinwabuzelayo.I-Haosteel Stainless Inventory manje ihlanganisa i-Alloy 347/347H (UNS S34700/S34709) eshidini, ikhoyili yeshidi, ipuleti, ibha eyindilinga, ibha eyisicaba ecutshunguliwe kanye nemikhiqizo yamashubhu.
347H ukwakheka kwamakhemikhali ensimbi engagqwali
Ukwakheka kwamakhemikhali:
| C | Si | Mn | P | S | Cr | Ni | Nb |
| 0.04-0.1 | ≤ 0.75 | ≤ 2.0 | ≤ 0.045 | ≤ 0.03 | 17.0 - 19.0 | 9.0 - 13.0 | 8C - 1.0 |
347H ukwakheka kwamakhemikhali ensimbi engagqwali
OkomzimbaIzakhiwo:
Okufakiwe:
Amandla Okuqina Okuqinile – 75KSI min (515 MPA min)
Amandla Esivuno (0.2% Offset) -30 KSI min (205 MPA min)
Ukuphakama - 40% min
Ukuqina - HRB92max (201HV max)
Izinhlelo zokusebenza
Ingxubevange engu-347H ivamise ukusetshenziselwa ukwenziwa kwezinto zokusebenza, okumele zisetshenziswe ngaphansi kwezimo ezimbi kakhulu zokugqwala, futhi ijwayelekile ezimbonini ezihluza uphethiloli.
Ukumelana Nokugqwala:
.Inikeza ukumelana okufanayo kokujwayelekile, ukugqwala okuphelele njenge-Alloy 304
.Isetshenziselwa izinhlelo zokusebenza lapho ingxubevange efana ne-Alloy 304 isengozini yokugqwala kwe-intergranualr
.Imvamisa isetshenziselwa izinto ezishiselwe esindayo ezingakwazi ukudonswa kanye nezisetshenziswa
esebenza phakathi kuka-800 kuya ku-150°F (427 KUYA KU-816°C)
.I-alloy 347 ikhethwa kune-Alloy 321 endaweni enamanzi kanye nezinye izinga lokushisa eliphansi.
.Isetshenziswa kakhulu ezindaweni zokushisa okuphezulu lapho ukumelana nokuzwela kuyadingeka, kuphinde kuvimbele ukugqwala kwe-intergranualr emazingeni aphansi.
.Ingathinteka ekuqhekekeni kokugqwala kwengcindezi
.Ibonisa ukumelana ne-oxidation efana nazo zonke ezinye izinsimbi ezingenasici ze-18-8 austenitic
Isikhathi sokuthumela: Feb-12-2023