Duplex UNS S31803
Duplex UNS S31803 Ulwazi lobuchwephesha
Isishwankathelo
I-Duplex yi-austenitic ferritic ye-Iron Chromium-Nickel alloy kunye ne-Molybdenim yokudibanisa. Inokumelana kakuhle nokugoba, ukomelela okuphezulu kunye nokumelana okuphezulu noxinzelelo lwe-corrosion cracking kumaqondo obushushu aphakathi ukuya kwezo zintsimbi eziqhelekileyo ze-austenitic.
I-Duplex yimathiriyeli enoqikelelo olulinganayo lwe-austenite kunye ne-ferrite. Ezi zinto zidibanisa ukuxhathisa kwe-corrosion kunye namandla aphezulu. Iipropati zoomatshini ziphantse ziphindwe kabini ezo zentsimbi ye-austenitic enye kunye nokuchasana noxinzelelo lwe-corrosion cracking luphezulu kunohlobo lwe-316 yensimbi engenasici kwizisombululo ze-chloride. I-Duplex imathiriyeli ine-ductile / brittle inguqu malunga no -50°C. Ukusetyenziswa kweqondo lokushisa eliphezulu ngokuqhelekileyo kuthintelwe kwiqondo lokushisa eliphezulu le-300 ° C ukuze lisetyenziswe ngokungenasiphelo ngenxa ye-embrittlement.
Iingenelo
Kukho iingenelo ezininzi zeDuplex ezibandakanya:
Amandla aphezulu
Ukuxhathisa okuphezulu kwi-pitting, ukuxhathisa kwi-corrosion kwi-crevice
Ukuchasana okuphezulu kuxinzelelo lwe-corrosion cracking, ukukhathala kunye nokukhukuliseka
Ukuchasana okugqwesileyo kwiChloride yoxinzelelo lwe-corrosion cracking
Ukwandiswa kwe-thermal ephantsi kunye ne-conductivity ephezulu yokushisa kune-Austenitic steels
Ukufunxa amandla aphezulu
Ukusebenza kakuhle kunye ne-weldability
Usetyenziso
Umbhobho – ASTM A790
Indlela yokuvelisa inokuba yinto engenamthungo okanye i-welding ngokuzenzekelayo, ngaphandle kokongeza kwintsimbi yokuzalisa. Umbhobho usenokuba shushu okanye ugodole ugqityiwe kodwa kufuneka usoloko unikezelwe kwimeko yonyango lobushushu.
BUTT WELD-ASTM A815
Le klasi ihlanganisa iklasi yeWP, eyenziwe ngamacandelo e-4 kwaye ihlangabezana neemfuno ze-ANSI B16.9. Ukulinganiswa koxinzelelo kukuhambelana okufanayo kombhobho ohambelanayo.
Iindidi :-
WP-S : Ulwakhiwo olungenamthungo
WP-W : Ulwakhiwo oludityanisiweyo apho iiwedi zokwakha zenziwe ngeradiographed
WP-WX : Ulwakhiwo oludityanisiweyo apho zonke iiwelds zenziwe ngeradiographed
I-WP-WU : Ulwakhiwo oludibeneyo apho ii-al welds zivavanywa nge-Ultrasonically.
Iiflange ASTM A182
Iinkcukacha ze-ASTM zilawula imathiriyeli ekrwada evunyiweyo apho kunokwenziwa iiflange. Iiflange zentsimbi yombhobho we-alloy okanye i-alloy rolled, izixhobo ezifakelweyo kunye neevalvu zokusetyenziswa kobushushu obuphezulu.
Iivalvu ze-ASTM A890 iBanga lesi-5A
Inkcazo esemgangathweni yokuCasa, i-lron-Chromium-Nickel-Molybdenum Corrosion-
Ukuxhathisa, iDuplex (iAustenitic/Ferritic) kwiSicelo esiBanzi'
Iinkcukacha zobuGcisa
UHLELO LWEKHEMICAL (Onke amaxabiso ngawona aphezulu ngaphandle kokuba kuchazwe ngenye indlela)
| %C | I-%Cr | %Ngaphakathi | %Mo | %Mn | I-%S | I-%P | % Kwaye | %N |
| 0.03 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 2.00 | 0.02 | 0.03 | 1.00 | 0.08-0.2 |
IIPROPATI ZOOMATSHINI
| Unikeze Amandla | Tensile strength | Ubude (Ubuncinane) | Ukucuthwa kwendawo (Ubuncinane) | Ukuqina (Ubuninzi)* |
| Ksi/Mpa | Ksi/Mpa | BHN | ||
| 65/450 | 60/620 | 20 | 290 |
*(Uhlaziyo lwamva nje lwe-NACE MR-01-75 lunokunciphisa ubulukhuni kwizicelo ezithile)
PREn (PITTING REISTANCE EQUIVALENT) – (%Cr) + (3.3 x %Mo) + (16 x %N)
UKUNYANGWA OKUSHISAYO: ISIXAMBULO SIFUMANE NGE-1020 DEG C – 1100 DEG C C ENCH AMANZI
AMABANGA ANGQIWEYO +
| US | BS EN | ESWEDEN SS | EJAMANI IDIN | EFRANCE AFNOR | ISANDVIK |
| 31803 | 1.4462 | 2377 | X2 CrNiMoN 22.5.3 | Z2 CND 22.05.03 | SAF 2205 |
Ixesha lokuposa: Aug-11-2022