Intshayelelo
I-Duplex 2205 insimbi engenasici (zombini i-ferritic kunye ne-austenitic) isetyenziswe ngokubanzi kwizicelo ezifuna ukuxhathisa okulungileyo kunye namandla.I-S31803 ye-Stainless Steel ye-Stainless Steel iye yafumana inani lokuguqulwa okubangelwa yi-UNS S32205, kwaye yavunywa ngonyaka we-1996. Eli bakala linikeza ukuchasana okuphezulu kwi-corrosion.
Kumaqondo obushushu angaphezu kwe-300 ° C, i-brittle micro-constituents yeli bakala ifumana imvula, kwaye kumaqondo obushushu angaphantsi kwe-50 ° C i-micro-constituents idlula kwi-ductile-to-brittle transition;kungoko eli bakala lensimbi engenasici alifanelekanga ukusetyenziswa kula maqondo obushushu.
Iimpawu eziphambili
Intsimbi eStainless - iBakala 2205 iDuplex (UNS S32205)
Iipropati ezikhankanyiweyo kolu luhlu lungezantsi lubhekiselele kwiimveliso ezisongelwe mcaba ezifana neepleyiti, iishiti kunye neekhoyili ze-ASTM A240 okanye i-A240M.Ezi zisenokungafani kuzo zonke ezinye iimveliso ezifana nemivalo kunye nemibhobho.
Ukuqamba
Intsimbi eStainless - iBakala 2205 iDuplex (UNS S32205)
Itheyibhile 1 ibonelela ngeendidi zokuhlanganisa kwibakala 2205 duplex steel stainless.
Uluhlu loku-1- Iindidi zokuqulunqa ze-2205 grade steels stainless
| IBanga | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 2205 (S31803) | Min Max | - 0.030 | - 2.00 | - 1.00 | - 0.030 | - 0.020 | 21.0 23.0 | 2.5 3.5 | 4.5 6.5 | 0.08 0.20 |
| 2205 (S32205) | Min Max | - 0.030 | - 2.00 | - 1.00 | - 0.030 | - 0.020 | 22.0 23.0 | 3.0 3.5 | 4.5 6.5 | 0.14 0.20 |
Iipropati zoomatshini
Iimpawu eziqhelekileyo zoomatshini zebakala le-2205 zensimbi ezingenasici zidweliswe kwitheyibhile engezantsi.IBanga le-S31803 lineempawu zoomatshini ezifanayo naleyo ye-S32205.
Itheyibhile 2- Iipropathi zeMechanical ze-2205 grade steels stainless
| IBanga | Tensile Str | Unikeze Amandla | Elongation | Ukuqina | |
| URockwell C (HR C) | Brinell (HB) | ||||
| 2205 | 621 | 448 | 25 | 31 ubuninzi | 293 ubuninzi |
Iipropati Zomzimba
Intsimbi eStainless - iBakala 2205 iDuplex (UNS S32205)
Iimpawu ezibonakalayo zebakala 2205 zentsimbi ezingenasici zidweliswe ngezantsi.IBanga le-S31803 lineempawu ezibonakalayo ezifanayo naleyo ye-S32205.
Itheyibhile 3-Iipropathi ezibonakalayo ze-2205 grade steels stainless
| IBanga | Ukuxinana | Elastic (GPA) | Mean Co-eff of thermal | Thermal | Ngokuthe ngqo (J/kg.K) | Umbane | |||
| 0-100°C | 0-315°C | 0-538°C | kwi-100°C | ku-500°C | |||||
| 2205 | 7800 | 190 | 13.7 | 14.2 | - | 19 | - | 418 | 850 |
Uthelekiso lweNgcaciso yeBanga
Intsimbi eStainless - iBakala 2205 iDuplex (UNS S32205)
Itheyibhile yesi-4 ibonelela ngokuthelekisa ibakala le-2205 yeentsimbi ezingenasici.Amaxabiso luthelekiso lwezixhobo zokusebenza ezifanayo.Ukulingana ngqo kunokufunyanwa kwiinkcukacha zokuqala.
Uluhlu lwesi-4-Ukuthelekisa ukucaciswa kweBanga le-2205 grade steels stainless
| IBanga | UNS | Old British | I-Euronorm | Swedish SS | IsiJaphani I-JIS | ||
| BS | En | No | Igama | ||||
| 2205 | S31803 / S32205 | 318S13 | - | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
AmaBanga anokuthi abekhona
Apha ngezantsi kunikwe uluhlu lwamabakala angamanye anokubakho, anokukhethwa endaweni ka-2205.
Uluhlu 5-Ukuthelekisa ukucaciswa kweBanga le-2205 grade steels stainless
| IBanga | Izizathu zokukhetha ibakala |
| 904L | Ukubunjwa okungcono kuyafuneka, kunye nokuxhathisa umhlwa okufanayo kunye namandla asezantsi. |
| I-UR52N+ | Ukuxhathisa okuphezulu kumhlwa kuyafuneka, umz. ukumelana nobushushu obuphezulu bamanzi olwandle. |
| 6% Mo | Ukumelana nomhlwa okuphezulu kuyafuneka, kodwa ngamandla asezantsi kunye nokubumba okungcono. |
| 316L | Ukumelana ne-corrosion ephezulu kunye namandla e-2205 ayidingeki.I-316L yindleko ephantsi. |
Ukunyangwa kokuMhlwa
Amabali anxulumeneyo
IBanga lama-2205 insimbi engenasici ibonisa ukuxhathisa okugqwesileyo, okungaphezulu kakhulu kunomgangatho we-316. Ixhathisa iintlobo ze-corrosion zendawo ezifana ne-intergranular, i-crevice kunye ne-pitting.I-CPT yolu hlobo lwensimbi engenasici ijikeleze i-35 ° C.Eli bakala liyaxhathisa kwi-chloride stress corrosion cracking (SCC) kumaqondo obushushu angama-150 ° C.IBanga lama-2205 iintsimbi ezingenastainless zithatha indawo efanelekileyo kumabakala e-austenitic, ngakumbi kwiimeko zokungaphumeleli kwangaphambi kwexesha kunye neemeko zaselwandle.
Ukumelana nobushushu
Ipropathi ephezulu yokumelana ne-oxidation yeBanga lama-2205 yonakaliswa ku-embrittlement yayo ngaphezu kwe-300 ° C.Le embrittlement inokuguqulwa ngonyango olupheleleyo lwe-annealing.Eli bakala liqhuba kakuhle kumaqondo obushushu angaphantsi kwama-300°C.
Unyango lobushushu
Olona nyango lufanelekileyo lobushushu kweli bakala lunyango lwesisombululo (i-annealing), phakathi kwe-1020 - 1100 ° C, ilandelwa kukupholisa ngokukhawuleza.IBakala 2205 linomsebenzi onzima kodwa alinakuqiniswa ngeendlela ezishushu.
Ukuwelda
Uninzi lweendlela zokuwelda ezisemgangathweni zihambelana neli bakala, ngaphandle kwe-welding ngaphandle kweentsimbi zokugcwalisa, ezikhokelela kwi-ferrite engaphezulu.AS 1554.6 pre-qualifying welding for 2205 with 2209 rods or electrode ukuze intsimbi edipozithiweyo ibe ne-right balanced duplex structure.
Ukongeza i-nitrogen kwigesi yokukhusela iqinisekisa ukuba i-austenite eyaneleyo yongezwa kwisakhiwo.Igalelo lokushisa kufuneka ligcinwe kwinqanaba eliphantsi, kwaye ukusetyenziswa kokushisa kwangaphambili okanye emva kufuneka kugwenywe.I-co-efficient yokwandiswa kwe-thermal kweli bakala iphantsi;kungoko ukugqwetheka kunye noxinzelelo lungaphantsi kunoko kumabakala angama-austenite.
Umatshini
I-machinability yeli bakala iphantsi ngenxa yamandla ayo aphezulu.Izantya zokusika ziphantse zibe ngama-20% ngaphantsi kwelo lebanga lama-304.
Ukwenziwa
Ukwenziwa kweli bakala kukwachatshazelwa ngamandla alo.Ukugoba kunye nokwenza eli bakala kufuna izixhobo ezinomthamo omkhulu.I-Ductility yeBakala 2205 ingaphantsi kune-austenitic grade;ke ngoko, isihloko esibandayo asinakwenzeka kweli bakala.Ukuze kwenziwe imisebenzi yesihloko esibandayo kweli bakala, kufuneka kuqhutywe i-annealing ephakathi.
Usetyenziso
Ezinye zezicelo eziqhelekileyo ze-duplex steel grade 2205 zidweliswe ngezantsi:
- Ukuhlola i-oyile negesi
- Izixhobo zokusebenza
- Uthutho, ukugcinwa kunye nokulungiswa kweekhemikhali
- I-chloride ephezulu kunye neendawo zaselwandle
- Oomatshini bamaphepha, iitanki zotywala, i-pulp kunye ne-digesters yamaphepha
Ixesha lokuposa: Mar-11-2023