Aloyi 347H ndi chitsulo chokhazikika, cha austenitic, chromium chokhala ndi columbium chomwe chimalola kuthetsa mpweya wa carbide, ndipo, chifukwa chake, intergranualr corrosion.Aloyi 347 imakhazikika ndi zowonjezera za chromium ndi tantalum ndipo imapereka zinthu zokwera kwambiri komanso zosokoneza kwambiri kuposa aloyi 304 ndi 304L zomwe zingagwiritsidwenso ntchito powonekera komwe kukhudzidwa ndi dzimbiri la intergranualr ndizodetsa nkhawa.Kuwonjezera kwa columbium kumapangitsanso Aloyi 347 kukhala ndi kukana kwambiri kwa dzimbiri, ngakhale kupambana kwa alloy 321. 347H ndi mawonekedwe apamwamba a carbon a Alloy 347 ndipo amasonyeza kutentha kwapamwamba ndi kukwawa.Zolemba za Haosteel Stainless tsopano zikuphatikiza Alloy 347/347H (UNS S34700/S34709) mu pepala, koyilo yamapepala, mbale, mipiringidzo yozungulira, mipiringidzo yosanja yopangidwa ndi tubular.
347H zitsulo zosapanga dzimbiri zopangidwa ndi mankhwala
Mapangidwe a Chemical:
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 zitsulo zosapanga dzimbiri zopangidwa ndi mankhwala
ZakuthupiKatundu:
Zowonjezera:
Ultimate Tensile Strength - 75KSI min (515 MPA min)
Mphamvu Zokolola (0.2% Offset) -30 KSI min (205 MPA min)
Kutalika - 40% min
Kuuma - HRB92max (201HV max)
Mapulogalamu
Aloyi 347H imagwiritsidwa ntchito nthawi zambiri popanga zida, zomwe ziyenera kuyikidwa pansi pazigawo zowononga kwambiri, komanso zimakhala zofala m'mafakitale oyeretsa mafuta.
Kulimbana ndi Corrosion:
.Amapereka kukana kofananira ndi chiwonongeko chonse, monga Alloy 304
.Amagwiritsidwa ntchito ngati ma aloyi monga Aloyi 304 ali pachiwopsezo cha kuwonongeka kwa intergranualr.
.Nthawi zambiri amagwiritsidwa ntchito pazida zowotcherera zolemetsa zomwe sizingathe kulumikizidwa ndi zida
yomwe imagwira ntchito pakati pa 800 mpaka 150 ° F (427 MPAKA 816 ° C)
.Alloy 347 imakondedwa kuposa Aloyi 321 kuti ikhale yamadzi komanso malo ena otsika kutentha.
.Amagwiritsidwa ntchito kwambiri m'malo otentha kwambiri komwe kukana kukhudzidwa ndikofunikira, ndikuteteza kudzidzidzi kwa intergranualr pamilingo yotsika.
.Kutengeka ndi nkhawa dzimbiri ang'onoang'ono
.Imawonetsa kukana kwa okosijeni kofanana ndi zitsulo zina zonse 18-8 austenitic zosapanga dzimbiri
Nthawi yotumiza: Feb-12-2023